阅读说明：本技术 连续高温提纯设备 (Continuous high-temperature purification equipment ) 是由 杜鸿达 陈威 康飞宇 于 2019-10-25 设计创作，主要内容包括：一种连续高温提纯设备,用于对石墨粉进行纯化处理,所述连续高温提纯设备包括炉体,所述炉体包括第一炉壁以及第二炉壁,所述第一炉壁围设成一第一腔体,所述第二炉壁围设于所述第一炉壁的外表面并与所述第一炉壁相距设置,所述第二炉壁与所述第一炉壁之间间隔形成一第二腔体,所述第二腔体与所述第一腔体连通。(The utility model provides a continuous high temperature purification equipment for carry out purification treatment to graphite powder, continuous high temperature purification equipment includes the furnace body, the furnace body includes first furnace wall and second oven, first furnace wall encloses and establishes into a first cavity, the second oven encloses and locates the surface of first oven and with first furnace wall is apart from setting up, the second oven with the interval forms a second cavity between the first furnace wall, the second cavity with first cavity intercommunication.)

1. The continuous high-temperature purification equipment is used for purifying graphite powder and is characterized by comprising a furnace body, wherein the furnace body comprises a first furnace wall and a second furnace wall, the first furnace wall is enclosed to form a first cavity, the second furnace wall is enclosed to be arranged on the outer surface of the first furnace wall and is arranged at a distance from the first furnace wall, a second cavity is formed between the second furnace wall and the first furnace wall at intervals, and the second cavity is communicated with the first cavity.

2. The continuous high temperature purification apparatus of claim 1, further comprising a heat-generating body disposed in the second furnace wall.

3. The continuous high temperature purification apparatus of claim 2, wherein the heat generating body comprises at least one of a resistor and a medium frequency induction coil.

4. The continuous high temperature purification apparatus of claim 1, further comprising an insulation layer disposed around and in close proximity to an outer surface of the second furnace wall.

5. The continuous high-temperature purification apparatus of claim 4, further comprising a third furnace wall, wherein the third furnace wall surrounds the outer surface of the insulation layer and is attached to the insulation layer; and a cooling layer is also arranged in the third furnace wall.

6. The continuous high temperature refining apparatus of claim 5, wherein the cooling layer is further connected to a power generation device, and the cooling layer is configured to provide absorbed energy to the power generation device during cooling.

7. The continuous high temperature purification apparatus of claim 1, wherein the height of the second furnace wall is 1.5-2 times the height of the first furnace wall.

8. The continuous high-temperature purification apparatus as recited in claim 1, further comprising a waste cleaning device, wherein the waste cleaning device is annular, a hole is formed at the top end of the furnace body, and the waste cleaning device is inserted into the furnace body through the hole.

9. The continuous high temperature purification apparatus of claim 8, wherein the scrap removal device is moved relative to the furnace body by a gear drive; and the outer side of the furnace body is provided with an exchange chamber around the hole.

10. The continuous high-temperature purification apparatus of claim 1, further comprising a slag extractor, wherein the slag extractor is communicated with the second chamber and the first chamber through a pipe, and the slag extractor is movably disposed on the pipe.

Technical Field

The application relates to the field of preparation of metallurgical engineering non-metallic materials, in particular to continuous high-temperature purification equipment.

Background

In recent years, the research of new energy industry is getting more and more hot, and graphite is widely researched and produced as one of potential materials, for example, graphite is not the second choice of lithium ion battery negative electrode material, and is also a key material in nuclear reactors. Furthermore, graphite plays an important role in the sealing field. With the continuous development of the application field of graphite, the requirement on the purity index of graphite is increasingly improved.

The purification treatment process commonly adopted in the industry at present comprises an Acheson method treatment process and a continuous high-temperature graphitization treatment process. The Acheson purification treatment process has a plurality of defects which cannot be overcome by the Acheson method: (1) the efficiency is low, indirect periodic production is realized, and the single shipment period is long; (2) the cost is high, the heat energy utilization rate is low and is generally not more than 25 percent; (3) the environment is poor, and a large amount of dust is generated in the production process; (4) the purification process of the Acheson furnace needs excessive purified gas (mainly chlorine and Freon) and brings pressure to a subsequent tail gas treatment system and the external environment. The continuous high-temperature purification equipment adopted in the existing continuous high-temperature graphitization treatment process has low energy utilization rate, is not beneficial to energy conservation, and has large volume and large occupied space.

Disclosure of Invention

In view of the above, there is a need for an energy-saving, small-sized continuous high-temperature purification apparatus.

The utility model provides a continuous high temperature purification equipment for carry out purification treatment to graphite powder, continuous high temperature purification equipment includes the furnace body, the furnace body includes first furnace wall and second oven, first furnace wall encloses and establishes into a first cavity, the second oven encloses and locates the surface of first oven and with first furnace wall is apart from setting up, the second oven with the interval forms a second cavity between the first furnace wall, the second cavity with first cavity intercommunication.

Further, the continuous high-temperature purification equipment also comprises a heating body, and the heating body is arranged in the second furnace wall.

Further, the heating body includes at least one of a resistor and an intermediate frequency induction coil.

Furthermore, the continuous high-temperature purification equipment further comprises a heat preservation layer, wherein the heat preservation layer is arranged on the outer surface of the second furnace wall in a surrounding mode and is attached to the second furnace wall.

Furthermore, the continuous high-temperature purification equipment also comprises a third furnace wall, wherein the third furnace wall is arranged around the outer surface of the heat-insulating layer and is attached to the heat-insulating layer; and a cooling layer is also arranged in the third furnace wall.

Further, the cooling layer is also connected with a power generation device, and the cooling layer is used for providing the energy absorbed during cooling to the power generation device.

Further, the height of the second furnace wall is 1.5-2 times the height of the first furnace wall.

Furthermore, continuous high temperature purification equipment still includes waste residue cleaning device, waste residue cleaning device is an annular, the top of furnace body sets up porosely, waste residue cleaning device passes through the hole is worn to locate the furnace body.

Further, the waste residue cleaning device moves relative to the furnace body through gear transmission; and the outer side of the furnace body is provided with an exchange chamber around the hole.

Furthermore, the continuous high-temperature purification equipment further comprises a slag extractor, the slag extractor is communicated with the second cavity and the area where the first cavity is communicated through a pipeline, and the slag extractor is movably arranged on the pipeline.

According to the continuous high-temperature purification equipment, the heat exchange between the first cavity and the second cavity is realized through the arrangement of a double-channel structure, and the utilization rate of energy is improved; meanwhile, the graphite cooling time is saved; the height of the continuous high-temperature purification equipment can be reduced, and the space can be effectively utilized.

Drawings

Fig. 1 is a schematic structural diagram of a continuous high-temperature purification apparatus provided in an embodiment of the present application.

Description of the main elements

Continuous high temperature purification apparatus 100

Furnace body 10

Tip 11

Hole 112

Bottom end 12

First furnace wall 13

Second furnace wall 14

Heating element 142

Insulating layer 15

Third furnace wall 16

First cavity 172

Second cavity 174

Inlet 182

First outlet 184

Second outlet 186

Slag extractor 20

Pipe 30

Waste residue cleaning device 40

Gear 42

Brush 44

Exchange chamber 46

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, a detailed description of the present application will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and the described embodiments are merely a subset of the embodiments of the present application, rather than all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes all and any combination of one or more of the associated listed items.

In various embodiments of the present application, for convenience in description and not limitation, the term "coupled" as used in the specification and claims of the present application is not limited to physical or mechanical connections, either direct or indirect. "upper", "lower", "above", "below", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Referring to fig. 1, the present embodiment provides a continuous high-temperature purification apparatus 100, where the continuous high-temperature purification apparatus 100 is used for purifying graphite powder to obtain pure graphite. The continuous high-temperature purification apparatus 100 includes a furnace body 10 and a slag extractor 20, and the slag extractor 20 is connected to the furnace body 10.

The furnace body 10 is roughly composed of a cylinder in the middle and an ellipsoid at two ends, and the two ends of the furnace body 10 are named as a top end 11 and a bottom end 12 respectively. The furnace body 10 comprises a first furnace wall 13, a second furnace wall 14, a heat preservation layer 15 and a third furnace wall 16 from inside to outside in sequence.

The first furnace wall 13 is substantially U-shaped, that is, one end of the first furnace wall is closed, the other end of the first furnace wall is open, a first cavity 172 is arranged in the middle, the closed end is arranged towards the bottom end 12, and the opening is arranged towards the top end 11.

The bottom end 12 of the furnace body 10 is provided with an inlet 182, the inlet 182 is communicated with the bottom of the first furnace wall 13, and the graphite powder enters the first cavity 172 through the inlet 182 for processing.

Because the temperature for purifying the graphite powder is higher, even higher than 3000 ℃, the first furnace wall 13 is made of high-temperature resistant materials such as graphite.

The second furnace wall 14 is arranged to surround the outer surface of the first furnace wall 13 and is spaced apart from the first furnace wall 13, a second cavity 174 is formed between the second furnace wall 14 and the first furnace wall 13, and the second cavity 174 is communicated with the first cavity 172 from the top end 11, that is, the first furnace wall 13 and the second furnace wall 14 surround the furnace body 10 with a double-channel structure.

The second furnace wall 14 is provided with a heating element 142, and the heating element 142 may be provided in the middle and top regions of the first furnace wall 13 as needed. The heating element 142 is used for heating and transferring heat to the second cavity 174 through the second furnace wall 14, the first furnace wall 13 is made of graphite, the heat transfer performance of the graphite is good, and the heat is transferred to the first cavity 172 through the first furnace wall 13 to realize heat exchange so as to preheat the graphite powder entering the first cavity 172, so that the heating element 142 is not required to be arranged in the lower area of the first furnace wall 13.

The heating element 142 includes, but is not limited to, at least one of a resistor and a medium frequency induction coil, that is, the heating element 142 is heated by resistance heating or medium frequency induction heating.

The top end 11 of the furnace body 10 is provided with a first outlet 184, the first outlet 184 penetrates through the second furnace wall 14 to extend outwards and is communicated with the first cavity 172, the first outlet 184 is connected with the slag extractor 20, and gas generated in the purification treatment process can be discharged to the slag extractor 20 through the first outlet 184.

The bottom of the second furnace wall 14 is provided with a second outlet 186, which second outlet 186 is intended for discharging purified graphite.

The second furnace wall 14 is made of graphite.

The graphite powder is purified by the first cavity 172 to form graphite, which can enter the second cavity 174 from the top end 11, and the purified graphite is discharged from the second outlet 186. Due to the arrangement of a double-channel structure, in the process that the graphite falls into the bottom end 12 from the second cavity 174, heat carried by the graphite can preheat graphite powder in the first cavity 172, and secondary utilization of energy is achieved; meanwhile, due to the arrangement of a double-channel structure, when the graphite passes through the second cavity 174, the temperature can be reduced, and a certain time is provided for the temperature reduction of the graphite; in addition, the double channel structure reduces the height of the continuous high-temperature purification apparatus 100, and effectively saves the installation space of the continuous high-temperature purification apparatus 100.

Further, the height of the second furnace wall 14 is 1.5-2 times of the height of the first furnace wall 13, namely, a certain space is reserved between the top of the first furnace wall 13 and the top of the second furnace wall 14, so that the graphite powder has enough space to enter the second cavity from the first cavity after purification, and the loss of the graphite discharged into the slag extractor 20 from the first outlet 184 is reduced; meanwhile, the gas formed by the impurities is also discharged into the slag extractor 20 in an ascending manner.

Further, a cooling device (not shown) is connected to the bottom of the second cavity 174 for cooling the graphite discharged from the second outlet 186 so as to collect the graphite.

The heat insulation layer 15 surrounds the outer surface of the second furnace wall 14 and is attached to the second furnace wall 14, and the heat insulation layer 15 is used for insulating heat in the second cavity 174 and preventing heat from being dissipated.

The third furnace wall 16 surrounds the outer surface of the heat-insulating layer 15 and is attached to the heat-insulating layer 15, and the third furnace wall 16 is the outermost layer of the furnace body 10. It will be appreciated that the insulating layer 15 also reduces the transfer of heat from the second cavity 174 to the third furnace wall 16, preventing the third furnace wall 16 from being at an excessive temperature.

The third furnace wall 16 is made of a metal or an alloy material, such as stainless steel.

The third furnace wall 16 is provided with a cooling layer (not shown), the cooling layer can cool the third furnace wall 16 through cooling water, and the flow rate of the cooling water can be regulated and controlled according to requirements. It is understood that, under the same conditions, when the flow rate of the cooling water is faster, the temperature of the cooling water after cooling is lower; when the flow rate of the cooling water is slow, the temperature of the cooling water after cooling is high.

In another embodiment, the cooling layer is further connected to a power generation device (not shown), and when the temperature of the cooled cooling water is higher, the cooling water is evaporated into steam, and the steam can be used for generating power for the power generation device, so that the heat loss in the continuous high-temperature purification equipment 100 can be fully recycled.

The extractor 20 is connected to the first outlet 184 through a pipe 30, that is, the extractor 20 is communicated with the communicating regions of the first cavity 172 and the second cavity 174. The extractor 20 is used to receive and discharge impurities, such as inorganic salts, etc., generated during the purification process.

Specifically, graphite powder passes through argon gas and gets into with the air-blast mode first cavity 172 carries out purification treatment, through under the effect of wind force, graphite powder and argon gas constantly rise to top 11, and at this in-process, graphite powder is purified to become pure graphite, and because the temperature of purification is higher, can reach 3000 ℃, under this temperature, impurity becomes gaseous. The wind force is controlled such that the graphite does not rise any more when the wind force applied to the tip 11 is substantially balanced with the gravity, and the graphite spreads into the second cavity 174 and is discharged from the second cavity 174 by the gravity. The gas continuously rises under the action of wind and is discharged into the slag extractor 20, the temperature of the gas gradually decreases, the gas is gradually condensed into solid, and the solid is stored in the slag extractor 20 and is discharged. It will be appreciated that the extractor 20 may be replaced periodically and without the need for a shut down.

Further, the extractor 20 is movably disposed on the duct 30. In the purification process, the temperature range of the top end 11 is relatively large, for example, 2500 ℃ to 3000 ℃, so that the temperature range of the gas is relatively large, the time required for condensation of the gas after the gas rises to the pipeline 30 is inconsistent, so that the gas is condensed in different areas of the pipeline 30, and the movable slag extractor 20 can collect impurities condensed in each area in the moving process, so that the impurities are effectively collected, and the slag extraction purpose is achieved. In one embodiment, the extractor 20 is moved by a belt, which drives the extractor 20.

Further, the continuous high-temperature purification apparatus 100 further includes a waste residue cleaning device 40, the waste residue cleaning device 40 is an annular waste residue cleaning device 40, and the annular waste residue cleaning device 40 penetrates through the furnace body 10.

Specifically, the top end 11 is opened with two holes 112, and the holes 112 are sequentially formed through the third furnace wall 16, the insulating layer 15 and the second furnace wall 14. The waste residue cleaning device 40 penetrates through the top end 11 from the hole 112, and the gear 42 drives the waste residue cleaning device 40 to move slowly relative to the furnace body 10. The waste residue cleaning device 40 is porous carbon, such as soft carbon fiber felt, and the waste residue cleaning device 40 is used for adsorbing impurities with relatively high boiling point and partially vaporized impurities in the purification process. It will be appreciated that the portion of the slag removal device 40 located in the furnace body 10 assumes an arc shape with a low middle and high ends due to gravity. The temperature of the area of the slag cleaning apparatus 40 located in the middle portion is high relative to that at both ends. The vaporized impurities meet the middle waste residue cleaning device 40 and then are solidified and deposited, when the impurities move to two ends, the temperature is reduced, preliminary cooling can be realized, and then the impurities are taken out of the furnace body 10 by the moving waste residue cleaning device 40.

Further, a brush 44 is arranged on the waste residue cleaning device 40, and is used for increasing the adsorption area of the waste residue cleaning device 40.

Further, the outer side of the third furnace wall 16 is provided with an exchange chamber 46 around the area of the hole 112, and the exchange chamber 46 is used for preventing the waste residue cleaning device 40 from causing the exchange of the substances in the furnace body 10 with the outside during the movement; meanwhile, the exchange chamber 46 can also be used for providing a space for cooling the waste residue cleaning device 40, so that the waste residue cleaning device 40 is prevented from being oxidized due to high temperature after the waste residue cleaning device 40 moves out of the furnace body 10.

According to the continuous high-temperature purification equipment 100, the heat exchange between the first cavity and the second cavity is realized through the arrangement of a double-channel structure, so that the utilization rate of energy is improved; meanwhile, the graphite cooling time is saved; it is also possible to reduce the height of the continuous high-temperature purification apparatus 100 and to effectively use the space.

Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.