Multistage countercurrent mixing system

文档序号：493666 发布日期：2022-01-07 浏览：54次中文

阅读说明：本技术 多级逆流混合系统 (Multistage countercurrent mixing system ) 是由林洁媛孙宁磊刘苏宁丁剑李勇刘国秦丽娟王魁珽于 2021-09-16 设计创作，主要内容包括：本发明公开了一种多级逆流混合系统,所述多级逆流混合系统包括第一混合柱、第一过滤装置、第二混合柱和第二过滤装置,第一混合柱具有吸附剂原料进口、流体第一进口和混合物第一出口；第一过滤装置具有混合物第一进口、吸附剂第一出口和流体终出口,其中混合物第一进口与混合物第一出口相连；第二混合柱具有吸附剂第一进口、流体原料进口和混合物第二出口,其中吸附剂第一进口与吸附剂第一出口相连；第二过滤装置具有混合物第二进口、吸附剂终出口和流体第一出口,其中混合物第二进口与混合物第二出口相连,流体第一出口与流体第一进口相连。本发明实施例的多级逆流混合系统具有出料效率高等优点。(The invention discloses a multi-stage countercurrent mixing system which comprises a first mixing column, a first filtering device, a second mixing column and a second filtering device, wherein the first mixing column is provided with an adsorbent raw material inlet, a first fluid inlet and a first mixture outlet; the first filtering device is provided with a mixture first inlet, an adsorbent first outlet and a fluid final outlet, wherein the mixture first inlet is connected with the mixture first outlet; the second mixing column has a first adsorbent inlet, a fluid feed inlet, and a second mixture outlet, wherein the first adsorbent inlet is connected to the first adsorbent outlet; the second filter device has a mixture second inlet connected to the mixture second outlet, an adsorbent final outlet, and a fluid first outlet connected to the fluid first inlet. The multistage countercurrent mixing system disclosed by the embodiment of the invention has the advantages of high discharging efficiency and the like.)

1. A multi-stage counter-current mixing system, comprising:

a first mixing column having a sorbent feedstock inlet, a fluid first inlet, and a mixture first outlet, each of the sorbent feedstock inlet and the fluid first inlet disposed above the mixture first outlet;

a first filtration device having a mixture first inlet, an adsorbent first outlet, and a fluid final outlet, wherein the mixture first inlet is connected to the mixture first outlet;

a second mixing column having an adsorbent first inlet, a fluid feed inlet, and a mixture second outlet, each of the adsorbent first inlet and the fluid feed inlet disposed above the mixture second outlet, wherein the adsorbent first inlet is connected to the adsorbent first outlet; and

a second filtration device having a mixture second inlet, an adsorbent final outlet, and a fluid first outlet, wherein the mixture second inlet is connected to the mixture second outlet and the fluid first outlet is connected to the fluid first inlet.

2. The multi-stage counter-current mixing system of claim 1, further comprising:

a third mixing column having an adsorbent second inlet, a fluid second inlet, and a mixture third outlet, wherein the adsorbent second inlet is connected to the adsorbent first outlet and the fluid second inlet is connected to the fluid first outlet; and

a third filtration device having a mixture third inlet connected to the mixture third outlet, an adsorbent second outlet connected to the adsorbent first inlet, and a fluid second outlet connected to the bulk fluid first inlet.

3. The multi-stage counter-current mixing system of claim 2, further comprising:

a fourth mixing column having a third adsorbent inlet, a third fluid inlet, and a fourth mixture outlet, wherein the third adsorbent inlet is connected to the second adsorbent outlet and the third fluid inlet is connected to the first fluid outlet; and

a fourth filtration device having a mixture fourth inlet, an adsorbent third outlet, and a fluid third outlet, wherein the mixture fourth inlet is connected to the mixture fourth outlet, the adsorbent third outlet is connected to the adsorbent first inlet, and the fluid third outlet is connected to the fluid second inlet.

4. The multi-stage counter-current mixing system according to any one of claims 1-3, wherein the first mixing column comprises:

a first outer housing defining a first chamber, a first exhaust port connected to the first chamber being provided at a top of the first outer housing, each of the raw sorbent material inlet and the first fluid inlet being provided at the top of the first outer housing and connected to the first chamber, the first mixture outlet being provided at a bottom of the first outer housing and connected to the first chamber;

the first guide cylinder is vertically arranged in the first cavity and is spaced from the first outer shell, the upper end and the lower end of the first guide cylinder are both open, and a plurality of first air inlet holes are distributed on the peripheral wall of the first guide cylinder;

the first air chamber shell is arranged in the first cavity, the first air chamber shell is hermetically connected to the outer surface of the peripheral wall of the first guide cylinder and defines a first air chamber together with the peripheral wall of the first guide cylinder, and each of the first air inlet holes is connected with the first air chamber; and

the first air inlet pipe penetrates through the first outer shell and is in sealing connection with the first outer shell, one end of the first air inlet pipe is connected with the first air chamber shell and is connected with the first air chamber 1 shell, the other end of the first air inlet pipe is located on the outer side of the first outer shell, and the first air inlet pipe is used for introducing air into the first air chamber.

5. The multi-stage counter-current mixing system according to any one of claims 1-3, wherein the second mixing column comprises:

a second housing defining a second chamber, a top of the second housing defining a second exhaust port connected to the second chamber, each of the first sorbent inlet and the fluid feedstock inlet disposed at the top of the second housing and connected to the second chamber, the mixture second outlet disposed at a bottom of the second housing and connected to the second chamber;

the second guide cylinder is vertically arranged in the second cavity and is spaced from the second outer shell, the upper end and the lower end of the second guide cylinder are both open, and a plurality of second air inlet holes are distributed on the peripheral wall of the second guide cylinder;

the second air chamber shell is arranged in the second cavity, the second air chamber shell is hermetically connected to the outer surface of the peripheral wall of the second guide cylinder and defines a second air chamber together with the peripheral wall of the second guide cylinder, and each of the second air inlet holes is connected with the second air chamber; and

the second air inlet pipe penetrates through the second outer shell and is in sealing connection with the second outer shell, one end of the second air inlet pipe is connected with the second air chamber shell and is connected with the second air chamber shell, the other end of the second air inlet pipe is located on the outer side of the second outer shell, and the second air inlet pipe is used for introducing air into the second air chamber.

6. The multi-stage counter-current mixing system according to any one of claims 1-3, further comprising:

the first liquid storage tank is provided with a first liquid storage tank inlet and a first liquid storage tank outlet, and the first liquid storage tank inlet is connected with the fluid final outlet; and

and the second liquid storage tank is provided with a second liquid storage tank inlet and a second liquid storage tank outlet, the second liquid storage tank inlet is connected with the first fluid outlet, and the second liquid storage tank outlet is connected with the first fluid inlet.

7. The multi-stage counter-current mixing system of claim 6, wherein the first filter device is disposed below the first mixing column to receive the mixture exiting the first mixture outlet, and the first sump is disposed below the first filter device to receive the fluid exiting the fluid outlet;

the second filter device is arranged below the second mixing column so as to receive the mixture flowing out of the second outlet of the mixture, and the second reservoir is arranged below the second filter device so as to receive the fluid flowing out of the first outlet of the fluid.

8. The multi-stage counter-current mixing system according to any one of claims 1-3, further comprising a first belt conveyor having a first feed end connected to the sorbent first outlet and a first discharge end connected to the sorbent first inlet, the first belt conveyor being disposed at a gradual upward incline in a direction from the first feed end to the first discharge end.

9. The multi-stage counter-current mixing system of claim 8 further comprising a first hopper having a first hopper inlet connected to the first discharge end and a first hopper outlet connected to the sorbent first inlet, the first hopper being positioned below the first discharge end to receive sorbent flowing from the first discharge end.

10. The multi-stage counter-current mixing system of claim 8, wherein the first mixing column and the second mixing column are arranged in a horizontal orientation, the first feed end is disposed below the first outlet of the sorbent, and the first discharge end is disposed above the first inlet of the sorbent. The fluid pump further includes a first fluid pump having a first fluid pump inlet coupled to the fluid first outlet and a first fluid pump outlet coupled to the fluid first inlet.

Technical Field

The invention relates to the technical field of ion exchange, in particular to a multi-stage countercurrent mixing system.

Background

Currently, ion exchange resin mixing systems are primarily fixed bed flow-through systems. Specifically, the resin is filled in the ion exchange column, fluid enters from one end of the ion exchange column to perform ion exchange with the resin, and then the fluid flows out from the other end of the ion exchange column. When the fluid contains a small amount of solid substances or the fluid and the resin generate solid substances in the ion exchange process, the solid substances are easy to accumulate in the ion exchange column to block the ion exchange column, and the operation of the fixed bed column passing system is influenced.

In the related art, a system for removing nickel and cobalt in laterite tailings by resin adsorption is provided. Specifically, ore pulp (laterite tailings) containing solid matters is fed into a mixing tank, resin and the laterite tailings are stirred and mixed in the mixing tank through a stirring paddle, then the ore pulp from which nickel and cobalt are removed overflows into a next-stage mixing tank under the action of gravity, the resin adsorbed with the nickel and cobalt is lifted to a high position by a gas stripping device and transferred into a previous-stage mixing tank, and the problem of low resin discharging efficiency exists.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides a multi-stage countercurrent mixing system to improve the discharge efficiency of the adsorbent.

A multi-stage counter-current mixing system according to an embodiment of the invention comprises:

a first filtration device having a mixture first inlet, an adsorbent first outlet, and a fluid final outlet, wherein the mixture first inlet is connected to the mixture first outlet;

The multistage countercurrent mixing system disclosed by the embodiment of the invention has the advantages of high discharging efficiency and the like.

In some embodiments, further comprising:

In some embodiments, the first mixing column comprises:

In some embodiments, the second mixing column comprises:

In some embodiments, further comprising:

In some embodiments, the first filter device is disposed below the first mixing column to receive the mixture flowing out of the first outlet of the mixture, and the first sump is disposed below the first filter device to receive the fluid flowing out of the fluid outlet;

In some embodiments, the adsorbent cleaning apparatus further comprises a first belt conveyor having a first feed end and a first discharge end, the first feed end being connected to the first outlet of the adsorbent, the first discharge end being connected to the first inlet of the adsorbent, the first belt conveyor being disposed at a gradual upward incline in a direction from the first feed end to the first discharge end.

In some embodiments, the system further comprises a first hopper having a first hopper inlet connected to the first discharge end and a first hopper outlet connected to the sorbent first inlet, the first hopper being positioned below the first discharge end to receive sorbent flowing from the first discharge end.

In some embodiments, the first mixing column and the second mixing column are arranged in a horizontal direction, the first feed end is disposed below the first outlet of the sorbent, and the first discharge end is disposed above the first inlet of the sorbent. The fluid pump further includes a first fluid pump having a first fluid pump inlet coupled to the fluid first outlet and a first fluid pump outlet coupled to the fluid first inlet.

Drawings

FIG. 1 is a schematic diagram of a multi-stage counter-current mixing system according to one embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the first mixing column and the third mixing column in fig. 1.

Fig. 3 is a schematic diagram of the structure of the second mixing column and the fourth mixing column in fig. 1.

Fig. 4 is a schematic view of the structure of the first mixing column of fig. 1.

Fig. 5 is a schematic view of the structure of the second mixing column of fig. 1.

Reference numerals:

a multi-stage counter-current mixing system 100;

a first mixing column 1; an adsorbent feed inlet 101; a fluid first inlet 102; a first mixture outlet 103; a first outer casing 104; a first chamber 105; a first exhaust port 106; a first guide shell 107; a first intake hole 108; a first chamber housing 109; a first plenum 1010; a first intake pipe 1011;

a first filter device 2; a first mixture inlet 201; an adsorbent first outlet 202; a fluid terminal outlet 203;

a second mixing column 3; a sorbent first inlet 301; a fluid feedstock inlet 302; a second mixture outlet 303; a second outer case 304; a second chamber 305; a second exhaust port 306; a second guide cylinder 307; the second intake holes 308; a second plenum housing 309; a second air chamber 3010; a second intake pipe 3011;

a second filter device 4; a second mixture inlet 401; a sorbent final outlet 402; a first outlet 403 for fluid;

a third mixing column 5; a second inlet 501 for sorbent; a fluid second inlet 502; a third outlet 503 for the mixture;

a third filter device 6; a third mixture inlet 601; a sorbent second outlet 602; a second outlet 603 for fluid;

a fourth mixing column 7; a third inlet 701 for adsorbent; a third inlet 702 for fluid; a fourth mixture outlet 703;

a fourth filter device 8; a fourth inlet 801 for the mixture; a third outlet 802 for sorbent; a fluid third outlet 803;

a first reservoir 9; a first reservoir inlet 901; a first sump outlet 902;

a second reservoir 10; a second reservoir inlet 1001; a second reservoir outlet 1002;

a first belt conveyor 11; a first feed end 1101; a first discharge end 1102; a first bulkhead 1103;

a first hopper 12; a first hopper inlet 1201; a first hopper outlet 1202;

a first liquid pump 13; a first liquid pump inlet 1301; a first liquid pump outlet 1302;

a third reservoir 14; a third reservoir inlet 1401; a second reservoir outlet 1402;

a fourth reservoir 15; a fourth reservoir inlet 1501; a fourth reservoir outlet 1502;

a second belt conveyor 16; a second feed end 1601; a second discharge end 1602; a second partition 1603;

a third belt conveyor 17; a third feed end 1701; a third discharge end 1702; a third partition 1703;

a second hopper 18; a second hopper inlet 1801; a second hopper outlet 1802;

a third hopper 19; a third hopper inlet 1901; a third hopper outlet 1902;

a second liquid pump 20; a second pump inlet 2001; a second fluid pump outlet 2002;

a third liquid pump 21; a third liquid pump inlet 2101; a third liquid pump outlet 2102;

a fourth liquid pump 22; a fourth liquid pump inlet 2201; a fourth liquid pump outlet 2202;

an adsorbent raw material bin 23;

a fluid handling system 24;

a fluid feedstock bin 25;

a sorbent treatment system 26.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 to 5, a multi-stage counter-current mixing system 100 according to an embodiment of the present invention includes a first mixing column 1, a first filtering device 2, a second mixing column 3, and a second filtering device 4. The first mixing column 1 has an adsorbent feed inlet 101, a fluid first inlet 102, and a mixture first outlet 103, each of the adsorbent feed inlet 101 and the fluid first inlet 102 being disposed above the mixture first outlet 103. The raw sorbent inlet 101 may be connected to a raw sorbent storage bin 23. Whereby sorbent feedstock may enter the first mixing column 1 from the sorbent feedstock inlet 101; the fluid first inlet 102 is in fluid communication with the intermediate fluid, such that the intermediate fluid may enter the first mixing column 1 from the fluid first inlet 102. The intermediate fluid entering the first mixing column 1 is mixed with the sorbent feedstock to produce a first mixture that can exit the first mixing column 1 at a mixture first outlet 103.

The first filter device 2 has a mixture first inlet 201, an adsorbent first outlet 202 and a fluid final outlet 203. Wherein the mixture first inlet 201 is connected to the mixture first outlet 103. Thus, the first mixture flowing out of the mixture first outlet 103 can enter the first filter device 2 through the mixture first inlet 201, and the first mixture is filtered in the first filter device 2 to obtain the intermediate adsorbent and the target fluid. The intermediate sorbent can exit the first filter apparatus 2 at the sorbent first outlet 202 and the target fluid can exit the first filter apparatus 2 at the fluid final outlet 203. The target fluid exiting the fluid terminal outlet 203 may enter the fluid handling system 24 for further processing.

The second mixing column 3 has an adsorbent first inlet 301, a fluid feed inlet 302, and a mixture second outlet 303, each of the adsorbent first inlet 301 and the fluid feed inlet 302 being disposed above the mixture second outlet 303. Wherein the first adsorbent inlet 301 is connected to the first adsorbent outlet 202. The fluid feed inlet 302 may be connected to the fluid feed bin 25. Thus, fluid feed can enter the second mixing column 3 from the fluid feed inlet 302, and the intermediate sorbent exiting the sorbent first outlet 202 can enter the second mixing column 3 through the sorbent first inlet 301. The fluid feed entering the second mixing column 3 is mixed with the intermediate adsorbent to produce a second mixture which can exit the second mixing column 2 at the mixture second outlet 303.

The second filter device 4 has a mixture second inlet 401, an adsorbent final outlet 402 and a fluid first outlet 403. Wherein the mixture second inlet 401 is connected to the mixture second outlet 303 and the fluid first outlet 403 is connected to the fluid first inlet 102. Thus, the second mixture flowing out of the mixture second outlet 303 can enter the second filter device 4 through the mixture second inlet 401, and the second mixture is filtered in the second filter device 4 to obtain an adsorbent end product (adsorbent having the target substance adsorbed thereon) and an intermediate fluid (fluid having a portion of the target substance removed therefrom). The intermediate fluid may flow from the fluid first outlet 403 into the first filter device 2 and enter the first mixing column 1 via the fluid first inlet 102; the sorbent end product may exit the second filter apparatus 4 at the sorbent end outlet 402. The sorbent end product exiting the sorbent end outlet 402 may be directed to the sorbent treatment system 26 for further processing.

In the related art, the resin mixed with the slurry is lifted to a high position by a gas stripping device and transferred to a mixing tank of the previous stage. When the specific gravity of the resin is larger than that of the ore pulp, the resin is difficult to transfer into the upper-stage mixing tank through the air stripping device, and the problem of low resin discharging efficiency exists.

When the multistage countercurrent mixing system 100 of the embodiment of the invention is used for stable operation, and the mixing of the adsorbent and the fluid is realized, the adsorbent raw material enters the first mixing column 1 from the adsorbent raw material inlet 101, then the adsorbent raw material sequentially enters the first filtering device 2, the second mixing column 3 and the second filtering device 4, and finally the adsorbent raw material is changed into the final adsorbent product and flows out of the second filtering device 4. The fluid material enters the second mixing column 3 from the fluid material inlet 302, and then the fluid enters the second filtering device 4, the first mixing column 1 and the first filtering device 2 in sequence, and finally the fluid material becomes the target fluid and flows out of the first filtering device 2. Causing the sorbent and fluid to flow in generally opposite directions and achieve multi-stage mixing.

In the first mixing column 1, the intermediate fluid is mixed with the sorbent feedstock to produce a first mixture, which can exit the first mixing column 1 through the mixture first outlet 103 to effect mixing of the sorbent feedstock and the intermediate fluid. In the first filter device 2, the first mixture is filtered in the first filter device 2 to obtain an intermediate adsorbent and a target fluid, the intermediate adsorbent can flow out of the first filter device 2 from the adsorbent first outlet 202, and the target fluid can flow out of the first filter device 2 from the fluid final outlet 203, so that the separation of the intermediate adsorbent and the target fluid is realized. In the second mixing column 3, the fluid material is mixed with the intermediate adsorbent to obtain a second mixture, and the second mixture can flow out of the second mixing column 2 through the mixture second outlet 303, so that the fluid material and the intermediate adsorbent are mixed. In the second filtering device, the second mixture is filtered in the second filtering device 4 to obtain the final adsorbent product and the intermediate fluid, and the intermediate fluid can enter the first mixing column 1 from the first fluid outlet 403 and the first filtering device 2 through the first fluid inlet 102, so that the final adsorbent product and the intermediate fluid are separated.

The adsorbent material may be a resin, the fluid material may be a pulp of laterite ore tailings, and the resin and the pulp of laterite ore tailings are mixed in the first mixing column 1 and the second mixing column 3 to adsorb nickel and cobalt from the pulp of laterite ore tailings with the resin and remove nickel and cobalt from the pulp of laterite ore tailings. Wherein, nickel and cobalt are target substances, and the laterite tailing pulp from which the nickel and cobalt are removed is target fluid.

It will be understood by those skilled in the art that, when the multistage countercurrent mixing system 100 according to the embodiment of the present invention starts to work, the first mixing column 1 and the first filtering device 2 can be first opened, the second mixing column 3 and the second filtering device 4 can be closed, and the adsorbent material can be introduced into the first mixing column 1 from the adsorbent material inlet 101; when the adsorbent material is about to flow into the second mixing column 3 through the first filtering device 2, the second mixing column 3 and the second filtering device 4 are opened, and simultaneously the fluid material is introduced into the second mixing column 3 from the fluid material inlet 302, so that the fluid material is mixed with the adsorbent entering the second mixing column 3. Or, first, the second mixing column 3 and the second filtering device 4 are opened, the first mixing column 1 and the first filtering device 2 are closed, and meanwhile, the fluid raw material is introduced into the second mixing column 3 from the fluid raw material inlet 302, when the fluid raw material is about to flow into the first mixing column 1 through the second filtering device 4, then the first mixing column 1 and the first filtering device 2 are opened, and meanwhile, the adsorbent raw material is introduced into the first mixing column 1 from the adsorbent raw material inlet 101, so that the adsorbent raw material is mixed with the fluid entering the first mixing column 1.

Wherein, multistage countercurrent mixing system 100 includes first order mixing system and second level mixing system, and first order mixing system includes above-mentioned first mixing column 1 and first filter equipment 2, and the second level mixing system includes above-mentioned second mixing column 3 and second filter equipment 4.

Therefore, the middle adsorbent and the target fluid in the first-stage mixing system are firstly separated through the first filtering device 2 and then respectively flow out of the first-stage mixing system, and the adsorbent end product and the middle fluid in the second-stage mixing system are firstly separated through the second filtering device 4 and then respectively flow out of the second-stage mixing system. Therefore, the adsorbent and the fluid in each mixing system are separated firstly and then flow out of the mixing system respectively, so that the outflow of the adsorbent and the fluid in each mixing system is not influenced mutually, and even the complete rapid discharge of the adsorbent and the fluid in each mixing system can be realized. Compared with the prior art that the adsorbent is mixed in the fluid and enters the next-stage mixing column through the gas stripping device, the discharging efficiency of the adsorbent can be effectively improved.

Therefore, the multi-stage countercurrent mixing system 100 according to the embodiment of the present invention has the advantages of high discharging efficiency of the adsorbent, etc.

As shown in fig. 1 to 3, the multi-stage counter-current mixing system 100 according to the embodiment of the present invention further includes a third mixing column 5 and a third filtering device 6.

The third mixing column 5 has an adsorbent second inlet 501, a fluid second inlet 502 and a mixture third outlet 503. Wherein the second adsorbent inlet 501 is connected to the first adsorbent outlet 202 and the second fluid inlet 502 is connected to the first fluid outlet 403. The intermediate sorbent exiting the sorbent first outlet 202 is a first intermediate sorbent and the intermediate fluid exiting the fluid first outlet 403 is a first intermediate fluid. Thus, the first intermediate sorbent exiting the sorbent first outlet 202 can enter the third mixing column 5 through the sorbent second inlet 501, and the first intermediate fluid exiting the fluid first outlet 403 can enter the third mixing column 5 through the fluid second inlet 502. The first intermediate fluid entering the third mixing column 5 mixes with the first intermediate adsorbent to produce a third mixture, which can exit the third mixing column 5 through the mixture third outlet 503.

The third filter device 6 has a mixture third inlet 601, an adsorbent second outlet 602 and a fluid second outlet 603. Wherein the mixture third inlet 601 is connected to the mixture third outlet 503, the adsorbent second outlet 602 is connected to the adsorbent first inlet 301, and the fluid second outlet 603 is connected to the fluid first inlet 102. Thus, the third mixture flowing out of the mixture third outlet 503 can enter the third filtering device 6 through the mixture third inlet 601, and the third mixture is filtered in the third filtering device 6 to obtain the second intermediate adsorbent and the third intermediate fluid. The third intermediate fluid can flow out of the third filtering device 6 from the fluid second outlet 603 and enter the first mixing column 1 through the fluid first inlet 102 to be mixed with the adsorbent raw material; the second intermediate sorbent can exit the third filtration device 6 from the sorbent second outlet 602. The second intermediate sorbent exiting sorbent second outlet 602 can enter second mixing column 3 to mix with the fluid feed.

When the multistage countercurrent mixing system 100 of the embodiment of the invention is used for stable operation, and the mixing of the adsorbent and the fluid is realized, the adsorbent raw material enters the first mixing column 1 from the adsorbent raw material inlet 101, then the adsorbent raw material sequentially enters the first filtering device 2, the third mixing column 5, the third filtering device 6, the second mixing column 3 and the second filtering device 4, and finally the adsorbent raw material is changed into the final adsorbent product and flows out of the second filtering device 4. The fluid material enters the second mixing column 3 from the fluid material inlet 302, and then the fluid material enters the second filtering device 4, the third mixing column 5, the third filtering device 6, the first mixing column 1 and the first filtering device 2 in sequence, and finally the fluid material becomes the target fluid and flows out from the first filtering device 2.

In the third mixing column 5, the intermediate adsorbent is mixed with the intermediate fluid to obtain a third mixture, and the third mixture can flow out of the third mixing column 5 through the third outlet 503 of the mixture to realize the mixing of the intermediate adsorbent and the intermediate fluid. In the third filtering device 6, the third mixture is filtered in the third filtering device 6 to obtain a second intermediate adsorbent and a third intermediate fluid, the second intermediate adsorbent can flow out of the third filtering device 6 from the adsorbent second outlet 602, and the third intermediate fluid can flow out of the third filtering device 6 from the fluid second outlet 603, so that the second intermediate adsorbent and the third intermediate fluid are separated.

Therefore, the adsorbent and the fluid can be mixed in more stages, so that the target substance in the fluid raw material can be more effectively adsorbed by the adsorbent, and the utilization rate of the adsorbent and the purity of the target fluid can be improved.

Wherein the multistage countercurrent mixing system 100 further comprises a third stage mixing system comprising the third mixing column 5 and the third filtering device 6.

In some embodiments, the multi-stage counter-current mixing system 100 according to embodiments of the present invention further comprises a fourth mixing column 7 and a fourth filtration device 8.

The fourth mixing column 7 has a third inlet 701 for adsorbent, a third inlet 702 for fluid and a fourth outlet 703 for mixture. Wherein the third inlet 701 of the adsorbent is connected to the second outlet 602 of the adsorbent, and the third inlet 702 of the fluid is connected to the first outlet 403 of the fluid. Thus, the first intermediate fluid exiting the first fluid outlet 403 may first enter the fourth mixing column 7 through the third fluid inlet 702, and the second intermediate sorbent exiting the second sorbent outlet 602 may enter the fourth mixing column 7 through the third sorbent inlet 701. The second intermediate sorbent entering the fourth mixing column 7 is mixed with the first intermediate fluid to produce a fourth mixture, which may exit the fourth mixing column 7 through a fourth mixture outlet 703.

The fourth filter device 8 has a mixture fourth inlet 801, an adsorbent third outlet 802 and a fluid third outlet 803. Wherein the mixture fourth inlet 801 is connected to the mixture fourth outlet 703, the adsorbent third outlet 802 is connected to the adsorbent first inlet 301, and the fluid third outlet 803 is connected to the fluid second inlet 502. Thus, the fourth mixture flowing out of the mixture fourth outlet 703 can enter the fourth filtering device 8 through the mixture fourth inlet 801, and the fourth mixture is filtered in the fourth filtering device 8 to obtain the third intermediate adsorbent and the second intermediate fluid. The second intermediate fluid may exit the fourth filter apparatus 8 from the fluid third outlet 803 and enter the third mixing column 5 through the fluid second inlet 502 to mix with the first intermediate sorbent; the third intermediate sorbent can exit the fourth filter device 8 from the sorbent third outlet 802. The third intermediate sorbent exiting the sorbent third outlet 802 can enter the second mixing column 3 to mix with the feed fluid.

When the multistage countercurrent mixing system 100 of the embodiment of the invention is used for stable operation, and the adsorbent and the fluid are mixed, the adsorbent raw material enters the first mixing column 1 from the adsorbent raw material inlet 101, then enters the first filtering device 2, the third mixing column 5, the third filtering device 6, the fourth mixing column 7, the fourth filtering device 8, the second mixing column 3 and the second filtering device 4 in sequence, and finally flows out from the second filtering device 4. The fluid material enters the second mixing column 3 from the fluid material inlet 302, and then the fluid enters the second filtering device 4, the fourth mixing column 7, the fourth filtering device 8, the third mixing column 5, the third filtering device 6, the first mixing column 1 and the first filtering device 2 in sequence, and finally flows out from the first filtering device 2. In the fourth mixing column 7, the second intermediate sorbent and the first intermediate fluid are mixed to obtain a fourth mixture, and the fourth mixture can flow out of the fourth mixing column 7 from the fourth outlet 703 of the mixture, so that the mixing of the second intermediate sorbent and the first intermediate fluid is realized. In the fourth filtering device 8, the fourth mixture is filtered in the fourth filtering device 8 to obtain a third intermediate adsorbent and a second intermediate fluid, the third intermediate adsorbent can flow out of the fourth filtering device 8 from the third adsorbent outlet 802, and the second intermediate fluid can flow out of the fourth filtering device 8 from the third fluid outlet 803, so that the third intermediate adsorbent and the second intermediate fluid are separated.

Wherein the multistage countercurrent mixing system 100 further comprises a fourth stage mixing system comprising the above fourth mixing column 7 and the fourth filtering device 8.

It will be appreciated that the first, second and third intermediate fluids are all intermediate fluids and the first, second and third intermediate sorbents are all intermediate sorbents.

As shown in fig. 4 and 5, the first mixing column 1 includes a first outer housing 104, a first guide cylinder 107, a first plenum housing 109, and a first air inlet pipe 1011. The first outer casing 104 defines a first chamber 105, the top of the first outer casing 104 is provided with a first exhaust port 106 connected with the first chamber 105, each of the raw adsorbent material inlet 101 and the fluid first inlet 102 is provided at the top of the first outer casing 104 and connected with the first chamber 105, and the mixture first outlet 103 is provided at the bottom of the first outer casing 104 and connected with the first chamber 105.

The first guide cylinder 107 is vertically arranged in the first chamber 105 and is not in contact with the first outer shell 104, the upper end and the lower end of the first guide cylinder 107 are both open, and a plurality of first air inlet holes 108 are distributed on the peripheral wall of the first guide cylinder 107.

The first air chamber housing 109 is disposed in the first chamber 105, the first air chamber housing 109 is hermetically connected to an outer surface of a peripheral wall of the first guide cylinder 107 and defines a first air chamber 1010 together with the peripheral wall of the first guide cylinder 107, and each of the plurality of first air inlet holes 108 is connected to the first air chamber 1010.

First intake pipe 1011 passes first shell body 104 and with first shell body 104 sealing connection, the one end of first intake pipe 1011 links to each other with first air chamber 1010 casing 109 and links to each other with first air chamber 1010 casing 109, the other end of first intake pipe 1011 is located the first shell body 104 outside, first intake pipe 1011 is used for letting in gas to first air chamber 1010.

Therefore, the adsorbent raw material enters the first chamber 105 through the adsorbent raw material inlet 101, the third intermediate fluid enters the first chamber 105 through the fluid first inlet 102 and is subjected to ion exchange reaction with the adsorbent raw material, the first air inlet pipe 1011 introduces air into the first air chamber 1010, the air enters the first guide cylinder 107 through the first air inlet hole 108, and a gas-liquid-solid three-phase mixture is formed in the first guide cylinder 107 at a position corresponding to the first air inlet hole 108. Because the density of the gas-liquid-solid three-phase mixture is less than that of the liquid-solid two-phase mixture, the gas-liquid-solid three-phase mixture at the position corresponding to the first air inlet 108 in the first guide cylinder 107 moves upwards along the first guide cylinder 107 under the action of pressure, is discharged through the upper opening of the first guide cylinder 107, and is mixed with the solid-liquid two-phase mixture outside the first guide cylinder 107. The lower part of the gas-liquid-solid three-phase mixture at the position corresponding to the first air inlet hole 108 in the first guide cylinder 107 forms negative pressure in the ascending process, so that the solid-liquid two-phase mixture at the lower part of the first guide cylinder 107 moves upwards along the inside of the first guide cylinder 107 under the action of pressure.

From this, the third intermediate fluid and the adsorbent raw materials in first cavity 105 can carry out the circulation flow all the time through first draft tube 107 for third intermediate fluid can the intensive mixing with the adsorbent raw materials, avoids the stagnation phenomenon to appear in the adsorbent raw materials, prevents that local component concentration supersaturation and formation crystallization, causes the adsorbent raw materials caking. The gas in the first chamber 105 is exhausted through the first exhaust port 106, and the fluid after ion exchange is completed is exhausted through the mixture first outlet 103 at the bottom of the first outer housing 104.

The second mixing column 3 includes a second outer housing 304, a second guide shell 307, a second plenum housing 309, and a second air inlet pipe 3011. The second housing 304 defines a second chamber 305, the top of the second housing 304 is provided with a second exhaust port 306 communicating with the second chamber 305, each of the first adsorbent inlet 301 and the fluid material inlet 302 is provided at the top of the second housing 304 and connected to the second chamber 305, and the second mixture outlet 303 is provided at the bottom of the second housing 304 and connected to the second chamber 305.

The second guide cylinder 307 is vertically disposed in the second chamber 305 and spaced apart from the second outer housing 304, the upper end and the lower end of the second guide cylinder 307 are both open, and a plurality of second air inlet holes 308 are distributed on the circumferential wall of the second guide cylinder 307.

The second air chamber housing 309 is disposed in the second chamber 305, the second air chamber housing 309 is hermetically connected to an outer surface of a peripheral wall of the second guide cylinder 307 and defines a second air chamber 3010 together with the peripheral wall of the second guide cylinder 307, and each of the plurality of second air inlet holes 308 communicates with the second air chamber 3010.

The second air inlet pipe 3011 penetrates through the second outer shell 304 and is connected with the second outer shell 304 in a sealing mode, one end of the second air inlet pipe 3011 is connected with the second air chamber 3010 shell 309 and communicated with the second air chamber 3010 shell 309, the other end of the second air inlet pipe 3011 is located on the outer side of the second outer shell 304, and the second air inlet pipe 3011 is used for introducing air into the second air chamber 3010.

From this, the fluid raw materials and the third middle adsorbent in the second chamber 305 can circulate through the second draft tube 307 all the time for the fluid raw materials can intensive mixing with the third middle adsorbent, avoids the third middle adsorbent to appear the stagnation phenomenon, prevents that local component concentration supersaturation and formation crystallization from causing the third middle adsorbent to agglomerate.

The third mixing column comprises a third outer shell, a third guide cylinder, a third air chamber shell and a third air inlet pipe. The third outer housing defines a third chamber, a third exhaust port communicated with the third chamber is arranged at the top of the third outer housing, each of the adsorbent second inlet 501 and the fluid second inlet 502 is arranged at the top of the third outer housing and connected with the third chamber, and the mixture third outlet is arranged at the bottom of the third outer housing and connected with the third chamber.

The third draft tube is vertically arranged in the third chamber and is spaced from the third outer shell, the upper end and the lower end of the third draft tube are both opened, and a plurality of third air inlet holes are distributed in the peripheral wall of the third draft tube.

The third air chamber shell is arranged in the third cavity, the third air chamber shell is connected to the outer surface of the peripheral wall of the third guide cylinder in a sealing mode and defines a third air chamber together with the peripheral wall of the third guide cylinder, and each of the third air inlet holes is communicated with the third air chamber.

The third air inlet pipe penetrates through the third outer shell and is connected with the third outer shell in a sealing mode, one end of the third air inlet pipe is connected with the third air chamber shell and is communicated with the third air chamber shell, the other end of the third air inlet pipe is located on the outer side of the third outer shell, and the third air inlet pipe is used for introducing air into the third air chamber.

From this, the principle with first mixing column is the same, utilizes third mixing column 5 to make fluid in the middle of the second can the intensive mixing with first middle adsorbent, avoids first middle adsorbent the stagnation phenomenon to appear, prevents that local component concentration supersaturation and formation crystallization from causing first middle adsorbent caking.

The fourth mixing column comprises a fourth outer shell, a fourth guide cylinder, a fourth air chamber shell and a fourth air inlet pipe. The fourth outer shell defines a fourth chamber, a fourth exhaust port communicated with the fourth chamber is arranged at the top of the fourth outer shell, each of the third adsorbent inlet 701 and the third fluid inlet 702 is arranged at the top of the fourth outer shell and is connected with the fourth chamber, and the fourth mixture outlet is arranged at the bottom of the fourth outer shell and is connected with the fourth chamber.

The fourth draft tube is vertically arranged in the fourth cavity and is spaced from the fourth outer shell, the upper end and the lower end of the fourth draft tube are both opened, and a plurality of fourth air inlets are distributed on the peripheral wall of the fourth draft tube.

The fourth air chamber shell is arranged in the fourth cavity, the fourth air chamber shell is connected to the outer surface of the peripheral wall of the fourth guide cylinder in a sealing mode and defines a fourth air chamber together with the peripheral wall of the fourth guide cylinder, and each of the plurality of fourth air inlet holes is communicated with the fourth air chamber.

The fourth air inlet pipe penetrates through the fourth outer shell and is in sealing connection with the fourth outer shell, one end of the fourth air inlet pipe is connected with the fourth air chamber shell and is communicated with the fourth air chamber shell, the other end of the fourth air inlet pipe is located on the outer side of the fourth outer shell, and the fourth air inlet pipe is used for introducing air into the fourth air chamber.

From this, the same with the principle of first mixing column 1, utilize fourth mixing column 7 to make adsorbent can the intensive mixing in the middle of first intermediate fluid and the second, the stagnation phenomenon appears in the adsorbent in the middle of avoiding the second, prevents that local component concentration supersaturation and formation crystallization from causing the adsorbent caking in the middle of the second.

In the related art, the front end of the stirring paddle has high speed, so that the adsorbent particles are easy to break or abrade. According to the multi-stage countercurrent mixing system 100, the first mixing column 1, the second mixing column 3, the third mixing column 5 and the fourth mixing column 7 are internally mixed with the adsorbent in a gas stripping manner, the problem that a stirring part collides with the adsorbent is solved, the problem that the adsorbent is broken and abraded can be effectively solved, and therefore the utilization rate of the adsorbent and the purity of target fluid can be effectively improved.

As shown in fig. 2 and 3, the multi-stage counter-current mixing system 100 according to an embodiment of the present invention includes a first reservoir 9, a second reservoir 10, a third reservoir 14, and a fourth reservoir 15.

The first reservoir 9 has a first reservoir inlet 901 and a first reservoir outlet 902, the first reservoir inlet 901 being connected to the fluid terminal outlet 203. Therefore, the target fluid flowing out of the fluid final outlet 203 of the first filter device 2 flows into the first reservoir 9 through the first reservoir inlet 901, and is stored by the first reservoir 9, and the target fluid in the first reservoir 9 can flow into the fluid treatment system 24 through the first reservoir outlet 902, so that the flow of the target fluid is circulated and transited through the first reservoir 9, and the amount, the time and the like of the target fluid flowing into the fluid treatment system 24 are more conveniently controlled.

The second reservoir 10 has a second reservoir inlet 1001 and a second reservoir outlet 1002, the second reservoir inlet 1001 being connected to the first fluid outlet 403 and the second reservoir outlet 1002 being connected to the first fluid inlet 102. Thus, the first intermediate fluid in the second filter device 4 flows into the second sump 10 via the second sump inlet 1001 and the first intermediate fluid in the second sump 10 flows into the fluid third inlet 702 via the second sump outlet 1002. The flow of the first intermediate fluid is more conveniently controlled by the turnaround transition of the first intermediate fluid by the second reservoir 10.

The third reservoir 14 has a third reservoir inlet 1401 and a third reservoir outlet 1402, the third reservoir inlet 1401 being connected to the 603 and the third reservoir outlet 1402 being connected to the first fluid inlet 102. Thus, the third intermediate fluid in the third filter device 6 is filtered and flows into the second sump 14 via the third sump inlet 1401 and the third intermediate fluid in the third sump 14 flows into the first inlet 102 via the third sump outlet 1402. The flow of the third intermediate fluid is more conveniently controlled by the turnaround transition of the third intermediate fluid by the third reservoir 14.

The fourth reservoir 15 has a fourth reservoir inlet 1501 and a fourth reservoir outlet 1502, the fourth reservoir inlet 1501 being connected to the fluid lines 803, and the fourth reservoir outlet 1502 being connected to the fluid lines 502. Thus, the second intermediate fluid in the fourth filter device 8 flows into the fourth sump 15 through the fourth sump inlet 1501 after being filtered, and the second intermediate fluid in the fourth sump 15 flows into the tank 502 through the fourth sump outlet 1502. The flow of the second intermediate fluid is more conveniently controlled by the turnaround transition of the second intermediate fluid by the fourth reservoir 15.

Therefore, the multistage countercurrent mixing system 100 according to the embodiment of the present invention can control the flow of the fluid more conveniently by the revolving and transition actions of the fluid in the first reservoir 9, the second reservoir 10, the third reservoir 14 and the fourth reservoir 15, so as to control the multistage countercurrent mixing system 100 conveniently.

As shown in fig. 1 to 3, according to the multi-stage counter-current mixing system 100 of the embodiment of the present invention, the first filtering device 2 is disposed below the first mixing column 1 so as to receive the first mixture flowing out of the mixture first outlet 103. The first sump 9 is disposed below the first filter device 2 so as to receive the object fluid flowing out of the fluid final outlet 203.

Thereby, there is a certain height difference between the first mixing column 1 and the first filtering means 2, and the first mixture in the first mixing column 1 can flow into the first filtering means 2 by the gravity of the first mixture itself. The first filter device 2 and the first reservoir 9 have a certain height difference, and the target fluid in the first filter device 2 can flow into the first reservoir 9 under the action of the gravity of the target fluid. So that it is not necessary to additionally provide a transport device for transporting the first mixture between the first mixing column 1 and the first filter device 2 and a transport device for transporting the objective fluid between the first filter device 2 and the first reservoir 9. Which contributes to savings in the manufacturing and operating costs of the multi-stage counter-flow mixing system 100.

A second filter device 4 is arranged below the second mixing column 3 to receive the second mixture flowing out of said second mixture outlet 303, and a second reservoir 10 is arranged below the second filter device 4 to receive the first intermediate fluid flowing out of the first fluid outlet 403.

Thus, in the same principle as the first mixing column 1 and the first filter device 2, there is no need to additionally provide a conveying device for conveying the second mixture between the second mixing column 3 and the second filter device 2, and there is no need to additionally provide a conveying device for conveying the first intermediate fluid between the second filter device 2 and the second sump 10. Which contributes to savings in the manufacturing and operating costs of the multi-stage counter-flow mixing system 100.

A third filter device 6 is arranged below the third mixing column 5 to receive a third mixture flowing out of the third mixture outlet 503, and a third sump 14 is arranged below the third filter device 6 to receive a third intermediate fluid flowing out of the third fluid outlet 603.

Thus, in the same principle as the first mixing column 1 and the first filter device 2, there is no need for an additional conveying device for conveying the third mixture between the third mixing column 5 and the third filter device 6, and no need for an additional conveying device for conveying the third intermediate fluid between the third filter device 6 and the third sump 14. Which contributes to savings in the manufacturing and operating costs of the multi-stage counter-flow mixing system 100.

A fourth filter device 8 is arranged below the fourth mixing column 7 to receive a fourth mixture flowing out of the fourth outlet 703 of said mixture, and a fourth sump 15 is arranged below the fourth filter device 8 to receive a second intermediate fluid flowing out of the third outlet 803 of the fluid.

Thus, in the same principle as the first mixing column 1 and the first filter device 2, there is no need for an additional conveying device for conveying the fourth mixture between the fourth mixing column 7 and the fourth filter device 8, and no need for an additional conveying device for conveying the second intermediate fluid between the fourth filter device 8 and the fourth sump 15. Which contributes to savings in the manufacturing and operating costs of the multi-stage counter-flow mixing system 100.

As shown in fig. 2, in some embodiments, the multi-stage counter-current mixing system 100 further comprises a first belt conveyor 11, a second belt conveyor 16, and a third belt conveyor 17.

The first belt conveyor 11 has a first infeed end 1101, a first outfeed end 1102, and a first bulkhead 1103. The first feed end 1101 is connected to the first outlet 202 of the adsorbent, the first discharge end 1102 is connected to the first inlet 301 of the adsorbent, and the first belt conveyor 11 is inclined gradually upward in a direction from the first feed end 1101 to the first discharge end 1102.

Thereby, the first intermediate sorbent flowing out of the first filter device 2 can flow onto the first feed end 1101 of the first belt conveyor 11 and be located in the first receiving space, the first intermediate sorbent is conveyed by the first belt conveyor 11 to the first discharge end 1102, and the first intermediate sorbent flowing out of the first discharge end 1102 can flow into the third mixing column 5. Thereby facilitating the transfer of the first intermediate adsorbent to the next stage of the mixing system by the conveying action of the first belt conveyor 11.

The second belt conveyor 16 has a second infeed end 1601, a second outfeed end 1602, and a second bulkhead 1603. The second feeding end 1601 is connected with the second outlet 602 of the adsorbent, the second discharging end 1602 is connected with the third inlet 701 of the adsorbent, and the second belt conveyor 16 is gradually inclined upward in the direction from the second feeding end 1601 to the second discharging end 1602.

Thereby, the second intermediate adsorbent flowing out of the second filter device 4 can flow into the second feed end 1601 of the second belt conveyor 16 and be located in the second accommodating space, the second intermediate adsorbent is conveyed to the second discharge end 1602 by the second belt conveyor 16, and the second intermediate adsorbent flowing out of the second discharge end 1602 can flow into the fourth mixing column 7. Thereby facilitating transfer of the second intermediate sorbent to the next stage of the mixing system by the conveying action of the second belt conveyor 16.

The third belt conveyor 17 has a third infeed end 1701, a third outfeed end 1702, and a third divider 1703. The third feed end 1701 is connected to the third outlet 802 for the adsorbent, the third discharge end 1702 is connected to the first inlet 301 for the adsorbent, and the third belt conveyor 17 is disposed to be inclined gradually upward in the direction from the third feed end 1701 to the third discharge end 1702.

Thereby, the third intermediate adsorbent flowing out of the third filter device 6 can flow into the third receiving space on the third feed end 1701 of the third belt conveyor 17, the third intermediate adsorbent is conveyed to the third discharge end 1702 by the third belt conveyor 17, and the third intermediate adsorbent flowing out of the third discharge end 1702 can flow into the second mixing column 3. Thereby facilitating transfer of the third intermediate sorbent to the next level of the mixing system by the conveying action of the third belt conveyor 17.

Optionally, a plurality of first partition walls 1103 are disposed on the first belt conveyor 11, the plurality of first partition walls 1103 are disposed at intervals along the length direction of the first belt conveyor 11, and a first accommodating space for accommodating the first intermediate adsorbent flowing from the first feeding end 1101 is defined between each first partition wall 1103 and the belt of the first belt conveyor 11.

Optionally, a plurality of second partition plates 1603 are arranged on the second belt conveyor 16, the second partition plates 1603 are arranged at intervals along the length direction of the second belt conveyor 16, and a second accommodating space for accommodating the second intermediate adsorbent flowing from the second feeding end 1601 is defined between each second partition plate 1603 and the belt of the second belt conveyor 16.

Optionally, a plurality of third partitions 1703 are disposed on the third belt conveyor 17, the third partitions 1703 are disposed at intervals along the length direction of the third belt conveyor 17, and a third accommodating space is defined between each third partition 1703 and the belt of the third belt conveyor 17, and is used for accommodating the third intermediate sorbent flowing from the third feeding end 1701.

Alternatively, the first belt conveyor 11, the second belt conveyor 16, and the third belt conveyor 17 are all large-inclination belt conveyors.

As shown in fig. 1 to 3, in some embodiments, the first mixing column 1, the second mixing column 3, the third mixing column 5, and the fourth mixing column 7 are all arranged in a horizontal direction. The first feed end 1101 is disposed below the first outlet 202 of the sorbent and the first discharge end 1102 is disposed above the second inlet 501 of the sorbent. The second feed end 1601 is disposed below the second outlet 602 of the adsorbent and the second discharge end 1602 is disposed above the third inlet 701 of the adsorbent. The third feed end 1701 is disposed below the third outlet 802 for sorbent and the third discharge end 1702 is disposed above the first inlet 301 for sorbent.

From this, through the transmission effect of first band conveyer 11, conveniently shift adsorbent in the middle of the first to next level hybrid system, and utilize first band conveyer 11 can promote the adsorbent in the middle of the first by a take the altitude. Through second band conveyer 16's transmission effect, conveniently shift the adsorbent in the middle of the second to next stage hybrid system, and utilize second band conveyer 16 can promote the adsorbent in the middle of the second by a take the altitude. Through the transmission effect of third band conveyer 17, conveniently shift adsorbent in the middle of the third to next stage hybrid system, and utilize third band conveyer 17 can promote the adsorbent by a take the altitude in the middle of the third.

As shown in fig. 1-3, in some embodiments, the multi-stage counter-flow mixing system 100 includes a first liquid pump 13, a second liquid pump 20, a third liquid pump 21, and a fourth liquid pump 22.

The primary liquid pump 13 has a primary liquid pump inlet 1301 and a primary liquid pump outlet 1302, the primary liquid pump inlet 1301 being connected to the fluid primary outlet 403, and the primary liquid pump outlet 1302 being connected to the fluid tertiary inlet 702.

The second pump 20 has a second pump inlet 2001 coupled to the first reservoir outlet 902 and a second pump outlet 2002 coupled 2002, the second pump inlet 2001 coupled to the fluid handling system 24.

The third liquid pump 21 has a third liquid pump inlet 2101 and a third liquid pump outlet 2102, the third liquid pump inlet 2101 being connected to the second reservoir outlet 1402, the third liquid pump outlet 2102 being connected to the first fluid inlet 102.

The fourth liquid pump 22 has a fourth liquid pump inlet 2201 and a fourth liquid pump outlet 2202, the fourth liquid pump inlet 2201 being connected to the fourth reservoir outlet 1502, the fourth liquid pump outlet 2202 being connected to the fluid second inlet 502.

Thereby, the first intermediate fluid is transferred into the fourth mixing column 7 by the first liquid pump 13. The target fluid may be delivered to the fluid treatment system 24 using the second fluid pump 20. A third intermediate fluid can be fed into the first mixing column 1 by means of a third liquid pump 21. The second intermediate fluid can be fed into the third mixing column 5 by means of a fourth liquid pump 22.

In the related technology, resin and laterite tailings are mixed in a mixing tank, and ore pulp for removing nickel and cobalt overflows into a next-stage mixing tank under the action of gravity, so that a certain height difference is required between two adjacent stages of mixing tanks, and the mixing system has higher requirements on civil engineering on the whole.

The first mixing column 1, the second mixing column 3, the third mixing column 5 and the fourth mixing column 7 of the multi-stage countercurrent mixing system 100 of the embodiment of the invention may not have height differences, and further have lower requirements for civil engineering.

Alternatively, the first, second, third and fourth liquid pumps 13, 20, 21, 22 are all high-pressure pumps.

As shown in fig. 1-3, in some embodiments, the multi-stage counter-flow mixing system 100 further comprises a first hopper 12, a second hopper 18, and a third hopper 19.

The first hopper 12 has a first hopper inlet 1201 and a first hopper outlet 1202, the first hopper inlet 1201 being connected to the first discharge end 1102, the first hopper outlet 1202 being connected to the sorbent first inlet 301. The first hopper 12 is positioned below the first discharge end 1102 so as to receive the first intermediate sorbent flowing from the first discharge end 1102.

The second hopper 18 has a second hopper inlet 1801 and a second hopper outlet 1802, the second hopper inlet 1801 being connected to the second outfeed end 1602, and the second hopper outlet 1802 being connected to the third inlet 701 of sorbent. A second hopper 18 is disposed below the second discharge end 1602 for receiving a second intermediate sorbent flowing from the second discharge end 1602.

The third hopper 19 has a third hopper inlet 1901 and a third hopper outlet 1902, the third hopper inlet 1901 being connected to the third discharge end 1702, and the third hopper outlet 1902 being connected to the adsorbent first inlet 301. A third hopper 19 is positioned below the third discharge end 1702 to receive the third intermediate sorbent flowing from the third discharge end 1702.

In order to make the technical solution of the present application easier to understand, the technical solution of the present application will be described below by taking an example in which the longitudinal direction of the first guide cylinder coincides with the vertical direction and the arrangement direction of the first mixing column 1 and the second mixing column 3 coincides with the horizontal direction.

For example, as shown in fig. 1 to 3, the first mixing column 1 is disposed above the first filter device 2, and the first filter device 2 is disposed above the first sump 9. The first mixing column 1 extends in the up-down direction, the adsorbent raw material inlet 101 and the fluid first inlet 102 are provided at the upper end portion of the first mixing column 1, and the mixture first outlet 103 is provided at the lower end portion of the first mixing column 1. The first filtering device 2 is gradually inclined downward from left to right, the mixture first inlet 201 is provided at the upper end portion of the first filtering device 2, the fluid final outlet 203 is provided at the lower end portion of the first filtering device 2, the adsorbent first outlet 202 is provided at the right end portion of the first filtering device 2, and the first feed end 1101 of the first belt conveyor 11 is provided below the adsorbent first outlet 202. The first reservoir 9 inlet is provided at an upper end portion of the first reservoir 9, and the first reservoir 9 outlet is provided below the first reservoir 9 inlet.

The second mixing column 3 is disposed below the third hopper 19, the second filter device 4 is disposed below the second mixing column 3, the second reservoir 10 is disposed below the second filter device 4, the third hopper 19 inlet is disposed at the upper end of the first hopper 12, the third hopper outlet 1902 is disposed at the lower end of the third hopper 19, and the third hopper outlet 1902 is disposed below the third discharge end 1702 of the third belt conveyor 17.

The second mixing column 3 extends in the up-down direction, and the adsorbent first inlet 301 and the fluid material inlet 302 are provided at the upper end portion of the second mixing column 3, and the mixture second outlet 303 is provided at the lower end portion of the second mixing column 3. The second filtering device 4 is gradually inclined downward from left to right, the mixture second inlet 401 is provided at the upper end portion of the second filtering device 4, the fluid first outlet 403 is provided at the lower end portion of the second filtering device 4, the adsorbent finishing outlet 402 is provided at the right end portion of the second filtering device 4, and the third feeding end 1701 of the third belt conveyor 17 is provided below the adsorbent third outlet 802. The second reservoir inlet 1001 is provided at an upper end portion of the second reservoir 10, and the second reservoir outlet 1002 is provided below the second reservoir 10.

The third mixing column 5 is disposed below the first hopper 12, the third filtering device 6 is disposed below the third mixing column 5, the third reservoir 14 is disposed below the third filtering device 6, the first hopper inlet 1201 is disposed at the upper end portion of the first hopper 12, the first hopper outlet 1202 is disposed at the lower end portion of the first hopper 12, the first hopper inlet 1201 is disposed below the first discharge end 1102 of the first belt conveyor 11, and the first feed end 1101 of the first belt conveyor 11 is disposed below the first adsorbent outlet 202.

The third mixing column 5 extends in the up-down direction, the adsorbent second inlet 501 and the fluid second inlet 502 are provided at the upper end portion of the third mixing column 5, and the mixture third outlet 503 is provided at the lower end portion of the third mixing column 5. The third filter device 6 is gradually inclined downwards from left to right, the mixture first inlet 201 is arranged at the upper end part of the third filter device 6, the fluid final outlet 203 is arranged at the lower end part of the first filter device 2, the adsorbent first outlet 202 is arranged at the right end part of the first filter device 2, the third sump inlet 1401 is arranged at the upper end part of the third sump 14, and the third sump outlet 1402 is arranged below the inlet of the third sump 14.

The fourth mixing column 7 is disposed below the second hopper 18, the fourth filter device 8 is disposed below the fourth mixing column 7, the fourth reservoir 15 is disposed below the fourth filter device 8, the second hopper inlet 1801 is disposed at an upper end portion of the second hopper 18, the second hopper outlet 1802 is disposed at a lower end portion of the second hopper 18, the second hopper inlet 1801 is disposed below the second discharge end 1602 of the second belt conveyor 16, and the second feed end 1601 of the second belt conveyor 16 is disposed below the second adsorbent outlet 602.

The fourth mixing column 7 extends in the up-down direction, and the adsorbent third inlet 701 and the fluid third inlet 702 are provided at the upper end portion of the fourth mixing column 7, and the mixture fourth outlet 703 is provided at the lower end portion of the fourth mixing column 7. The first filter device 2 is gradually inclined downward from left to right, the mixture fourth inlet 801 is provided at the upper end portion of the first filter device 2, the fluid third outlet 803 is provided at the lower end portion of the first filter device 2, the adsorbent third outlet 802 is provided at the right end portion of the first filter device 2, and the second feed end 1601 of the second belt conveyor 16 is provided below the adsorbent third outlet 802. The fourth sump inlet 1501 is provided at an upper end portion of the fourth sump 15, and the fourth sump outlet 1502 is provided below the fourth sump inlet 1501.

The method implemented using the multi-stage counter-current mixing system 100 of an embodiment of the present invention is described in detail with reference to fig. 1-5:

the adsorbent raw material enters the first mixing column 1 through the adsorbent raw material inlet 101, the third intermediate fluid from the next stage enters the first mixing column 1 through the fluid first inlet 102, and the adsorbent raw material and the third intermediate fluid in the first mixing column 1 are fully mixed in the first mixing column 1. For example, the sorbent feedstock and the third intermediate fluid are mixed within the first mixing column 1 for 7.5 hours. The mixed first mixture flows into the first filtering device 2 through the mixture first outlet 103, the first intermediate adsorbent obtained by filtering through the first filtering device 2 is conveyed into the third mixing column 5 through the first belt conveyor 11, the target fluid obtained by filtering through the first filtering device 2 flows into the first reservoir 9, and the target fluid in the first reservoir 9 is conveyed to the fluid treatment system 24 through the second fluid pump 20.

The first intermediate adsorbent and the second intermediate fluid in the third mixing column 5 are fully mixed through the air stripping mixing action of the guide cylinder, the mixed second mixture flows into the third filtering device 6 through the fluid second outlet 603, the second intermediate adsorbent obtained through filtering by the third filtering device 6 is conveyed into the fourth mixing column 7 through the second belt conveyor 16, the third intermediate fluid obtained through filtering by the third filtering device 6 flows into the third liquid storage tank 14, and the third intermediate fluid in the third liquid storage tank 14 is conveyed into the first mixing column 1 through the third liquid pump 21.

The second adsorbent and the first intermediate fluid in the fourth mixing column 7 are fully mixed through the air stripping mixing action of the guide cylinder, the mixed fourth mixture flows into the fourth filtering device 8 through the fourth outlet 703 of the mixture, the third intermediate adsorbent obtained through filtering by the fourth filtering device 8 is conveyed into the second mixing column 3 through the belt conveyor, the second intermediate fluid obtained through filtering by the fourth filtering device 8 flows into the fourth liquid storage tank 15, and the second intermediate fluid in the fourth liquid storage tank 15 is conveyed into the third mixing column 5 through the fourth liquid pump 22.

Fluid raw materials enter the second mixing column 3 through the fluid raw material inlet 302, the fluid raw materials in the second mixing column 3 and the third intermediate adsorbent from the upper stage are fully mixed through the air stripping mixing action of the guide cylinder, the mixed second mixture flows into the second filtering device 4 through the mixture second outlet 303, the final adsorbent product obtained through filtering by the second filtering device 4 flows to the adsorbent treatment system 26 through the adsorbent final outlet 402, the first intermediate fluid obtained through filtering by the second filtering device 4 flows into the second reservoir 10, and the first intermediate fluid in the second reservoir 10 is conveyed into the fourth mixing column 7 through the first liquid pump 13.

The sorbent and the fluid are mixed in each mixing column stage, air is introduced for mixing for a first preset time (for example, 7.5 hours) to reach a single-stage balance basically, then air supply is stopped, and the material is discharged from the lower part of the mixing column and falls into a filtering device. Fluid after screening through filter equipment falls into the reservoir, carry the fluid to the last level mixing column through the delivery pump, the adsorbent gets into band conveyer, carry from bottom to top through band conveyer, fall into next stage mixing column through the hopper, the adsorbent after the last level screening is sent to adsorbent processing system, fluid after the first level screening is sent to fluid processing system 24 through the liquid pump, the equal all quick ejection of compact of each level adsorbent and fluid in the time (for example, 72h) is predetermine to the system operation second, and get into next stage and last level mixing column smoothly respectively, realize multistage counter-current mixing.

The multistage countercurrent mixing system 100 of the invention adopts a gas stripping mode as power for mixing the adsorbent and the fluid, thereby reducing the abrasion of the adsorbent. The adsorbent and the fluid are directly discharged through the lower part of the mixing column, so that the discharging efficiency is high, and the adsorbent and the fluid are not limited by density difference of the adsorbent and the fluid. The filtering device is arranged below the mixing column, and is convenient to operate. The adsorbent is transferred to the next stage by a large-inclination-angle belt conveyor, and the fluid is pumped to the previous stage, so that all stages can be at the same level, and the requirement on civil engineering is low.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

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