阅读说明：本技术 一种加热炉烟气脱硫系统 (Heating furnace flue gas desulfurization system ) 是由 张作帅 于 2021-08-25 设计创作，主要内容包括：本发明属于脱硫装置技术领域,具体公开一种加热炉烟气脱硫系统,包括用于固定床脱硫反应的吸收仓,所述吸收仓底部设置有烟气进口,所述烟气进口连接有用于引入烟气的烟道机构,吸收仓顶部连接有用于填充吸收仓的吸收剂供给装置,所述吸收仓侧面设置有用于循环吸收烟气的循环机构以及用于排出吸收剂的排放口,所述烟道机构和排放口处分别连接有用于输送小颗粒吸收剂的小颗粒物料排出组件以及用于输送大颗粒吸收剂的大颗粒物料排出组件。通过改变原有的直筒罐式结构的固定床脱硫塔结构,从底部进烟气,使得烟气由下至上完全穿过吸收仓,确保烟气与吸收剂的充分反应,提高烟气与吸收剂的接触时长和接触范围,提高吸收剂的利用率。(The invention belongs to the technical field of desulfurization devices, and particularly discloses a heating furnace flue gas desulfurization system which comprises an absorption bin for fixed bed desulfurization reaction, wherein a flue gas inlet is formed in the bottom of the absorption bin, the flue gas inlet is connected with a flue mechanism for introducing flue gas, the top of the absorption bin is connected with an absorbent supply device for filling the absorption bin, a circulating mechanism for circulating and absorbing flue gas and a discharge port for discharging absorbent are formed in the side surface of the absorption bin, and the flue mechanism and the discharge port are respectively connected with a small particle material discharge assembly for conveying a small particle absorbent and a large particle material discharge assembly for conveying a large particle absorbent. Through changing the fixed bed desulfurization tower structure of original straight barrel pot formula structure, advance the flue gas from the bottom for the flue gas is by supreme absorption storehouse of passing completely down, ensures the abundant reaction of flue gas and absorbent, and it is long and contact range when improving the contact of flue gas and absorbent, improves the utilization ratio of absorbent.)

1. The utility model provides a heating furnace flue gas desulfurization system, its characterized in that, is including the absorption storehouse that is used for fixed bed desulfurization reaction, absorption storehouse bottom is provided with the flue gas inlet, the flue gas inlet is connected with the flue mechanism that is used for introducing the flue gas, and absorption storehouse top is connected with the absorbent feeding device who is used for filling the absorption storehouse, absorption storehouse side is provided with the discharge port that is used for circulating the circulation mechanism of absorption flue gas and is used for discharging the absorbent, flue mechanism and discharge port department are connected with the small granule material discharge subassembly that is used for carrying the small granule absorbent respectively and are used for carrying the large granule material discharge subassembly of large granule absorbent, small granule material discharge subassembly fixed connection is in flue mechanism bottom, large granule material discharge subassembly fixed connection is in discharge port department.

2. The heating furnace flue gas desulfurization system according to claim 1, wherein a supporting net for supporting and isolating the absorbent and a vibrating mechanism arranged at the bottom of the supporting net for vibrating the supporting net are fixed at the bottom of the absorption bin, the supporting net is arranged obliquely downwards, and the discharge port is arranged at one side of the lowest end of the supporting net.

3. The flue gas desulfurization system for the heating furnace according to claim 1, wherein the small particle material discharge unit has the same structural composition as the large particle material discharge unit.

4. The heating furnace flue gas desulfurization system of claim 1, wherein the small particle material discharge assembly comprises a connection standpipe for connecting the absorption bin, a conveying auger for horizontally conveying the material, and a discharge pipe for discharging the material, the connection standpipe is fixedly connected to a feeding port of the conveying auger, and the discharge pipe is fixedly connected to a discharging port of the conveying auger.

5. The heating furnace flue gas desulfurization system according to claim 1, wherein the absorbent supply device comprises a plurality of filling openings arranged at the top of the absorption bin and a feeding pipe for supplying absorbent to the filling openings, the plurality of filling openings are uniformly distributed on the periphery of the top of the fixed bed reaction tower, a filling pipe is connected to each filling opening, and the plurality of filling pipes are respectively communicated with the feeding pipe.

6. The heating furnace flue gas desulfurization system according to claim 5, wherein a buffer tank for buffering the absorbent is further arranged between the filler pipe and the feed pipe, the feed pipe is communicated with the top of the buffer tank, the filler pipe is communicated with the bottom of the buffer tank, the buffer tank comprises a tank body for storing the absorbent and a support column for supporting the tank body, two ends of the support column are respectively connected with the bottom of the buffer tank and the top of the fixed bed reaction tower, and the tank body is provided with a feed hole for connecting the feed pipe and a material distribution hole for connecting the filler pipe.

7. The heating furnace flue gas desulfurization system according to claim 6, wherein a conical disc for dispersing the absorbent is provided at the bottom inside the tank body, and the conical disc is fixedly connected with the tank body.

8. The heating furnace flue gas desulfurization system according to claim 1, wherein the absorption bin comprises two sets of a first absorption bin and a second absorption bin which are connected with each other through a pipeline, the first absorption bin comprises a first bin body for containing an absorbent, a first flue gas inlet arranged at the bottom of the first bin body and used for gas intake, a first flue gas outlet arranged at the top of the first bin body and used for exhaust, and a first return port arranged below the first bin body and used for return repeated purification, the first flue gas outlet and the first return port are connected through a first return pipeline, a first exhaust pipe used for exhaust is further arranged on the first return pipeline, and a first three-way valve used for controlling the gas flow direction is arranged at the connection of the first exhaust pipe and the first return pipeline.

9. The flue gas desulfurization system for the heating furnace according to claim 8, wherein the second absorption bin structure is the same as the first absorption bin structure.

10. The heating furnace flue gas desulfurization system according to claim 1, wherein the flue mechanism comprises a receiving pipe connected to the bottom of the fixed bed reaction tower and an air inlet flue extending into the receiving pipe from the wall of the receiving pipe, a first material blocking member is fixed at the air outlet end of the air inlet flue, a second material blocking member is fixed on the outer wall of the air inlet flue, and the first material blocking member is higher than the second material blocking member.

Technical Field

The invention belongs to the technical field of desulfurization devices, and particularly relates to a heating furnace flue gas desulfurization system.

Background

The traditional flue gas treatment device is generally characterized in that a flue inlet is arranged in the middle of a fixed bed reaction tower, a receiving pipe is arranged at the bottom of the fixed bed reaction tower, and a flue gas outlet is arranged at the top of the fixed bed reaction tower, but in the mode, absorbent materials are required to be put into the top of the fixed bed reaction tower, the absorbent materials are discharged from the bottom of the fixed bed reaction tower, and flue gas is introduced from the side of the fixed bed reaction tower, so that the occupied area is large, meanwhile, the flue gas and the fixed bed are not fully reacted due to the flue gas at the side, the flue gas often flows along a fixed path, the materials in the fixed bed reaction tower are generally difficult to complete the flue gas desulfurization reaction, the waste of a desulfurizer is caused, and the desulfurization efficiency is reduced; in addition, go up the straight tube setting of advancing down and go up and collide mutually cracked very easily when making the absorbent get into jar internally to dispersion that can not be even is at jar internal portion, can be unfavorable for staff's healthy because the production that leads to the smoke and dust of quick discharge when the absorbent is arranged the material, also does not benefit to operational environment's maintenance, and if can solve the dirt cigarette problem through the cloth bag dust removal filtration, but the sack change frequency is higher, and then leads to manufacturing cost to increase.

Accordingly, further developments and improvements are still needed in the art.

Disclosure of Invention

In order to solve the above problems, a flue gas desulfurization system for a heating furnace is proposed. The invention provides the following technical scheme:

the utility model provides a heating furnace flue gas desulfurization system, is including the absorption storehouse that is used for the fixed bed desulfurization reaction, absorption storehouse bottom is provided with the flue gas inlet, the flue gas inlet is connected with the flue mechanism that is used for introducing the flue gas, and absorption storehouse top is connected with the absorbent feeding device who is used for filling the absorption storehouse, absorption storehouse side is provided with the discharge port that is used for circulating the circulation mechanism who absorbs the flue gas and is used for discharging the absorbent, flue mechanism and discharge port department are connected with the little granule material discharge assembly who is used for carrying the little granule absorbent respectively and are used for carrying the large granule material discharge assembly of large granule absorbent, little granule material discharge assembly fixed connection is in flue mechanism bottom, large granule material discharge assembly fixed connection is in discharge port department.

Furthermore, the bottom of the absorption bin is fixed with a supporting net for supporting and isolating the absorbent and a vibration mechanism arranged at the bottom of the supporting net and used for vibrating the supporting net, the supporting net is arranged obliquely downwards, and the discharge port is arranged at one side of the lowest end of the supporting net.

Furthermore, the small particle material discharging assembly and the large particle material discharging assembly are identical in structure and composition.

Further, the subassembly is discharged to the tiny particle material is including being used for connecting the connection standpipe in absorption storehouse, being used for the transport auger of horizontal transfer material and being used for discharging the row of material pipe of material, connect standpipe fixed connection in the material loading mouth of carrying the auger, arrange material pipe fixed connection in the feed opening of carrying the auger.

Furthermore, the absorbent feeding device comprises a plurality of filling openings arranged at the top of the absorption bin and a feeding pipe used for feeding absorbent to the filling openings, the filling openings are uniformly distributed on the periphery of the top of the fixed bed reaction tower, a filling pipe is connected to each filling opening, and the filling pipes are communicated with the feeding pipe respectively.

Further, still be provided with the buffer tank that is used for the buffer memory absorbent between filled pipe and the inlet pipe, inlet pipe and buffer tank top intercommunication, filled pipe and buffer tank bottom intercommunication, buffer tank are including the jar body that is used for the stock and the support column that is used for the support jar body, buffer tank bottom and fixed bed reaction tower top are connected respectively to the support column both ends, be provided with the feed port that is used for connecting the inlet pipe on the jar body and be used for connecting the branch material hole of filled pipe.

Furthermore, a conical disc for dispersing the absorbent is arranged at the bottom in the tank body, and the conical disc is fixedly connected with the tank body.

Furthermore, the absorption bin comprises two sets of first absorption bin and second absorption bin which are connected with each other through a pipeline, the first absorption bin comprises a first bin body for containing an absorbent, a first flue gas inlet arranged at the bottom of the first bin body and used for air inlet, a first flue gas outlet arranged at the top of the first bin body and used for exhaust, and a first backflow port arranged below the first bin body and used for backflow repeated purification, the first flue gas outlet is connected with the first backflow port through a first backflow pipeline, a first exhaust pipe used for exhaust is further arranged on the first backflow pipeline, and a first three-way valve used for controlling the flow direction of gas is arranged at the joint of the first exhaust pipe and the first backflow pipeline.

Further, the second absorption bin structure is the same as the first absorption bin structure.

Further, flue mechanism is including connecting in the receiver tube of fixed bed reaction tower bottom and stretching into the inside flue that admits air of receiver tube from the receiver tube pipe wall, the end of giving vent to anger of flue that admits air is fixed with first fender material spare, be fixed with second fender material spare on the flue outer wall of admitting air, first fender material spare height is higher than second fender material spare height.

Has the advantages that:

1. the flue gas enters from the bottom by changing the structure of the fixed bed desulfurizing tower of the original straight barrel tank type structure, so that the full reaction of the flue gas and the absorbent is ensured;

2. by arranging the corresponding absorbent filling and discharging devices, the uniform filling and controllable discharging of the absorbent are ensured, and the dust pollution of the working environment is avoided;

3. the size of the absorbent is divided by the supporting net, so that the large particles and the small particles are discharged from different ways, and the reduction of smoke dust amount by controlling and connecting different discharging devices is facilitated;

4. the circulating flow of the flue gas in the absorption bin is realized by arranging the return pipeline on the side surface of the absorption bin, so that the flue gas can be fully absorbed by the absorbent, and the orientations of the flue gas inlet and the return opening are different, so that the airflow cannot be absorbed by the absorbent along the same airflow path all the time, and the utilization rate of the absorbent is improved;

5. through the transmission auger helical drive opposite direction with two absorption storehouse bottoms for the two is discharged in the material pipe through the sharing that central authorities set up, and the material pipe is arranged in the sharing, makes things convenient for fixed transmission line's material level that connects, thereby effective control smoke and dust pollution source, convenient unified processing.

Drawings

FIG. 1 is a schematic diagram of a flue gas desulfurization system for a heating furnace according to an embodiment of the present invention;

FIG. 2 is a schematic view of the internal cross-sectional structure of the flue means in an embodiment of the present invention;

FIG. 3 is a schematic structural view of a flue mechanism in an installation state in an embodiment of the present invention;

FIG. 4 is a schematic view showing the installation structure of the absorbent supplying apparatus in the embodiment of the present invention;

FIG. 5 is a schematic view of a top-down mounting structure of an absorbent feeding apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic sectional view taken along line A-A of FIG. 5 in accordance with the present invention;

FIG. 7 is a schematic view of an absorbent bin assembly according to an embodiment of the present invention;

FIG. 8 is a schematic view of a portion of a small particle material discharge assembly in accordance with an embodiment of the present invention;

in the drawings: 100. a feed pipe; 200. a buffer tank; 210. a tank body; 211. a feed port; 212. a material distributing hole; 213. a conical disc; 220. a support pillar; 300. a filler tube; 400. an absorption bin; 410. a first absorption bin; 411. a first bin body; 412. a first flue gas inlet; 413. a first flue gas outlet; 414. a first return port; 415. a first return line; 416. a first three-way valve; 417. a first exhaust pipe; 418. a first pneumatic circulation pump; 420. a second absorption bin; 421. a second bin body; 422. a second flue gas inlet; 423. a second flue gas outlet; 424. a second return port; 425. a second return line; 426. a second three-way valve; 427. a second exhaust pipe; 428. a second pneumatic circulation pump; 430. a filling opening; 440. a discharge port; 450. a bin body; 460. collecting the bin; 500. a flue mechanism; 510. a receiving tube; 520. an air intake flue; 521. an air inlet pipe; 522. an air outlet pipe; 530. a first material blocking part; 531. connecting columns; 540. a second material blocking part; 600. a support net; 700. a vibration mechanism; 800. a small particle material discharge assembly; 810. connecting a vertical pipe; 820. a discharge pipe; 830. conveying the auger; 900. large-particle material discharging assembly.

Detailed Description

In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.

As shown in fig. 1-8, a heating furnace flue gas desulfurization system comprises an absorption bin 400 for fixed bed desulfurization reaction, a flue gas inlet is arranged at the bottom of the absorption bin 400, the flue gas inlet is connected with a flue mechanism 500 for introducing flue gas, an absorbent supply device for filling the absorption bin 400 is connected to the top of the absorption bin 400, a circulation mechanism for circulating absorption flue gas and a discharge port 440 for discharging absorbent are arranged on the side surface of the absorption bin 400, a small particle material discharge assembly 800 for conveying small particle absorbent and a large particle material discharge assembly 900 for conveying large particle absorbent are respectively connected to the flue mechanism 500 and the discharge port 440, the small particle material discharge assembly 800 is fixedly connected to the bottom of the flue mechanism 500, and the large particle material discharge assembly 900 is fixedly connected to the discharge port 440. The fixed bed desulfurization tower structure of the original straight barrel tank type structure is changed, and the flue gas enters from the bottom, so that the flue gas completely passes through the absorption bin 400 from bottom to top, the full reaction of the flue gas and the absorbent is ensured, the contact time and the contact range of the flue gas and the absorbent are improved, and the utilization rate of the absorbent is improved; through setting up corresponding absorbent and filling and discharging equipment, ensure that the absorbent fills evenly, discharge controllable, avoid operational environment's dust pollution.

Further, the bottom of the absorption bin 400 is fixed with a supporting net 600 for supporting the isolation absorbent and a vibrating mechanism 700 arranged at the bottom of the supporting net 600 for vibrating the supporting net 600, the supporting net 600 is arranged obliquely downwards, and the discharge port 440 is arranged at one side of the lowest end of the supporting net 600. The size of the absorbent is divided by the supporting net 600, so that the absorbent is divided into large particles and small particles by the filtering action of the supporting net 600, the large particles move along the upper surface of the supporting net 600 and gradually move to the discharge port 440 along with the vibration of the vibration mechanism 700 to be discharged, and the small particles pass through the supporting net 600 and are collected at the flue gas inlet and then discharged, so that the large particles and the small particles are respectively discharged from different ways, and the reduction of the smoke dust amount by controlling and connecting different discharge devices is facilitated. The guiding of the absorbent towards the discharge opening 440 by the obliquely downward supporting mesh 600 also contributes to a reduction of the power consumption of the vibration mechanism 700, so that the absorbent slides down the slope into the discharge opening 440 with only little disturbing force. Preferably, the absorption bin 400 comprises a cylindrical bin body 450 and a bucket-shaped collection bin 460, wherein the collection bin 460 is detachably connected to the bottom end of the bin body 450. The bin body 450 is used as a main place for absorbing harmful substances in smoke by the absorbent, so that a larger accommodating volume is needed, the column shape can well meet the requirement, and the absorbent is conveniently collected by adding the hopper-shaped collecting bin 460. Through setting up the storehouse body 450 of dismantling the connection and receiving storehouse 460, conveniently overhaul the supporting network 600 and the vibration mechanism 700 that set up in receiving storehouse 460 and maintain, prolong the whole life of equipment. Preferably, in this embodiment, the supporting net 600 and the vibrating mechanism 700 are fixedly connected to the collecting chamber 460. Preferably, the supporting net 600 is detachably connected to the inner wall of the collecting chamber 460. The supporting net 600 is fixedly connected to the inner wall of the collecting bin 460 at ordinary times, and the vibrating mechanism 700 below the supporting net 600 is convenient to overhaul and maintain by dismounting the supporting net 600 when the supporting net 600 is to be overhauled. Preferably, in this embodiment, the vibration mechanism 700 includes a vibration exciter, and an output end of the vibration exciter is connected to the support screen 600. The vibration exciter has small volume, is not easily influenced by the absorbent, is easy to control the vibration frequency through electric power, and has strong controllability. In another preferred embodiment, the vibration mechanism 700 includes a cam and a rotating motor for driving the cam to rotate. The supporting net 600 is intermittently controlled to vibrate by arranging the cam, so that the absorbent is prevented from being accumulated and agglomerated, and the normal falling and recovery of the absorbent are influenced. Cam simple structure more adapts to the more environment of granule impurity for the vibration exciter, and the sealed swivelling joint of rotation axis is passed through at the cam both ends on absorbing storehouse 400 inner wall, and rotating electrical machines sets up on absorbing storehouse 400 outer wall, avoids the absorbent to bring the influence to rotating electrical machines's normal work. Preferably, the bottom of the flue gas inlet is fixedly connected with a small particle material discharging assembly 800.

Further, the small particle material discharging assembly 800 and the large particle material discharging assembly 900 have the same structure and composition. Through set up tiny particle material discharge assembly 800 and large granule material discharge assembly 900 respectively in absorption storehouse 400 below, divide into large granule and tiny particle with the absorbent district, set up different row's material speed respectively to large granule and tiny particle for the absorbent is discharged at a slow speed through tiny particle material discharge assembly 800 after falling, discharges fast through large granule material discharge assembly 900, thereby reduces the smoke and dust.

Further, the subassembly 800 is discharged to the tiny particle material is including being used for connecting the connection standpipe 810 of absorbing storehouse 400, being used for the transport auger 830 of horizontal transfer material and being used for the row of the material pipe 820 of discharge material, connect standpipe 810 fixed connection in the material loading mouth of carrying auger 830, arrange material pipe 820 fixed connection in the feed opening of carrying auger 830. The vertical pipe 810 is connected, so that the absorbent can naturally slide down under the action of gravity, the energy loss in the conveying process is reduced, and the use cost of equipment resources is reduced; through setting up transport auger 830, effective control arranges material speed, gives the material of vertical whereabouts simultaneously with buffer space for the smoke and dust can slowly subside in the passageway of carrying auger 830. As the optimization of the technical scheme, the conveying auger 830 comprises a conveying motor arranged at the end part, a transmission auger connected to the output end of the conveying motor and a conveying cylinder sleeved outside the transmission auger. As the optimization of the technical scheme, the material conveying cylinder is horizontally arranged. The conveying cylinder arranged horizontally can block the falling speed of the absorbent in time, and the absorbent is discharged at a constant speed by matching with the transmission auger with controllable speed, so that controllable recycling is realized. In another preferred embodiment, the material conveying cylinder is arranged obliquely downwards along the blanking direction. Compared with the horizontally arranged material conveying cylinder, the material conveying cylinder which is obliquely and downwards arranged can further control the height difference of the absorbent in the falling process, and further reduce the generation of smoke dust. Preferably, the length of the connecting vertical pipe 810 is greater than that of the discharging pipe 820. The connecting vertical pipe 810 is arranged to be longer, so that the absorbent firstly falls and then is still buffered by the conveying auger 830, the smoke dust amount is reduced, meanwhile, the length of the conveying auger is reduced, the absorbent naturally falls by utilizing gravity, and the energy loss and the investment of enterprise cost are reduced.

Further, the absorbent feeding device comprises a plurality of filling ports 430 arranged at the top of the absorption bin 400 and a feeding pipe 100 used for feeding absorbent to the filling ports 430, the filling ports 430 are provided, the plurality of filling ports 430 are uniformly distributed on the periphery of the top of the fixed bed reaction tower, a filling pipe 300 is connected to each filling port 430, and the plurality of filling pipes 300 are respectively communicated with the feeding pipe 100. Through set up a plurality of filler openings 430 in absorption storehouse 400 top periphery, the blanking position and the single mouthful blanking volume of dispersion absorbent to bottom sprag net 600's impact force when reducing the absorbent blanking, the life of extension sprag net 600 improves the homogeneity that the absorbent packed simultaneously, improves the absorption rate of absorbent.

Further, a buffer tank 200 for buffering the absorbent is further arranged between the filler pipe 300 and the feed pipe 100, the feed pipe 100 is communicated with the top of the buffer tank 200, the filler pipe 300 is communicated with the bottom of the buffer tank 200, the buffer tank 200 comprises a tank body 210 for storing the absorbent and a support column 220 for supporting the tank body 210, two ends of the support column 220 are respectively connected with the bottom of the buffer tank 200 and the top of the fixed bed reaction tower, and the tank body 210 is provided with a feed hole 211 for connecting the feed pipe 100 and a material distribution hole 212 for connecting the filler pipe 300. By arranging the buffer tank 200 between the filling pipe 300 and the feeding pipe 100, the dispersion uniformity of the absorbent is further improved, and meanwhile, a certain normal-pressure buffer space is provided for the material distribution holes 212, so that the phenomenon of stacking and blocking of the absorbent at the material distribution position is avoided. The support column 220 is made of a light material, and is mainly used for limiting the fixed distance between the buffer tank 200 and the absorption bin 400, so that the absorption bin 400 is prevented from being loaded with large weight, and meanwhile, the support column 220 plays a role in auxiliary support, so that the filler pipe 300 is prevented from being bent and deformed due to overlarge pressure.

Further, a conical disc 213 for dispersing the absorbent is arranged at the bottom in the tank 210, and the conical disc 213 is fixedly connected with the tank 210. The axes of the feeding hole 211 and the conical disc 213 are located on the same straight line, so as to ensure that the discharged material can be uniformly dispersed to the center of the conical disc 213 as much as possible, and then uniformly dispersed to the surrounding material distributing holes 212 along the slope of the conical disc 213. Further, the height of the conical disc 213 is less than half of the height of the can 210. Avoid the too high absorbent falling speed that leads to of conical disk 213 height to make the equipartition effect invalid. Further, the feeding hole 211 is disposed at the axis of the top of the tank 210, and the distributing hole 212 is disposed along the circumferential direction of the bottom of the tank 210. The material distributing holes 212 are tangentially arranged along the circumferential direction of the inner wall of the bottom of the tank body 210, so that a material storage platform is prevented from being left between the material distributing holes 212 and the inner wall as much as possible, and the absorbent is prevented from being retained and deteriorated in the buffer tank for a long time. Further, the bottom surface of the conical disc 213 coincides with an inscribed circle formed by the material distribution holes 212. The absorbent directly falls into the material distributing hole 212 below after falling into the conical disc 213, and a material storage platform is prevented from remaining between the material distributing hole 212 and the conical disc 213 as far as possible, so that the absorbent is retained and deteriorated in the buffer tank for a long time. Further, a closing valve for cutting off the communication relationship is arranged at the joint of the filler pipe 300 and the top of the absorption bin 400. The sealing between the absorption bin 400 and the filler pipe 300 is realized by arranging the sealing valve, the smoke is prevented from entering the filler pipe 300 or the feeding pipe 100 to pollute the absorbent, meanwhile, the sealing valve can also control the filling speed of the absorbent, the filling position and the blanking speed are controlled by opening and closing the sealing valve at a specific position, the supporting net 600 can be protected by reducing the filling speed when the filling is started, and after the absorbent with a certain thickness is arranged on the supporting net 600, the seasoning efficiency is improved by opening all the sealing valves to improve the filling speed. Further, an even number of the filling openings 430 are symmetrically arranged around the periphery of the top of the absorption bin 400. The even number of the filling openings 430 are symmetrically arranged, so that the uniformity of filling can be ensured when the feeding speed of the absorbent is controlled. Further, eight filling ports 430 are provided, and eight filling tubes 300 are provided corresponding to the eight filling ports 430. The eight filling ports 430 can cover the filling positions of the absorption bin 400 comprehensively, ensure the uniformity of the filling, and conveniently control the flow rate.

Further, the absorption bin 400 includes two sets of first absorption bin 410 and second absorption bin 420 which are connected to each other through a pipeline, the first absorption bin 410 includes a first bin body 411 for containing an absorbent, a first flue gas inlet 412 arranged at the bottom of the first bin body 411 for air intake, a first flue gas outlet 413 arranged at the top of the first bin body 411 for exhaust, and a first return port 414 arranged below the first bin body 411 for return and repeated purification, the first flue gas outlet 413 is connected with the first return port 414 through a first return pipeline 415, the first return pipeline 415 is further provided with a first exhaust pipe 417 for exhaust, and a first three-way valve 416 for controlling a gas flow direction is arranged at a connection position of the first exhaust pipe 417 and the first return pipeline 415. Through being provided with return line in absorption storehouse 400 side, realize the circulation flow of flue gas in absorption storehouse 400 to make the absorbent can carry out abundant absorption to the flue gas, and flue gas inlet and backward flow mouth orientation are inconsistent, make the air current can not be followed same air current route all the time and be absorbed by the absorbent, and then improve the utilization ratio of absorbent. By arranging the three-way valve, the airflow can only pass through two pipelines at each time, and can not pass through the third pipeline, the flow path of the airflow is conveniently controlled, and the airflow is controlled to move along the circulating path or be discharged out of the absorption bin 400. Through setting up two continuous absorption storehouses 400, improve absorption efficiency, can be according to opening of flue gas volume selectivity and use one or two storehouse body 450 carry out harmful substance's absorption, practicality and suitability are better, and the selectivity is opened conveniently and is enlarged production and energy saving. Further, the first backflow pipeline 415 includes a first air inlet section connected to the first backflow port 414, a first exhaust section connected to the first flue gas outlet 413, and a first backflow section having two ends respectively connected to the first air inlet section and the first exhaust section, and the first backflow section is provided with a first pneumatic circulation pump 418 for controlling the airflow backflow speed. Preferably, a supporting net 600 for isolating the absorption bin 400 from the pipeline is arranged at the first flue gas inlet 412, the first flue gas outlet 413 and the first return port 414, and at the second flue gas inlet 422, the second flue gas outlet 423 and the second return port 424, and the net diameter of the supporting net 600 is smaller than the particle diameter of the absorbent particles. The upper end and the lower end of the return pipeline are obliquely and downwards arranged, so that the phenomenon that the absorbent enters the pipeline after passing through the filter screen and is blocked is reduced as much as possible. After the air inlet pipe 521 and the exhaust pipeline are closed, the smoke is circulated by the aid of the pneumatic circulating pump, so that the smoke continuously circularly flows from bottom to top, and the reaction process is ensured to be sufficient. Further, the first air inlet section is fixedly connected to the first return port 414 obliquely downward, and the first exhaust section is fixedly connected to the first flue gas outlet 413 obliquely downward.

Further, the second absorption chamber 420 has the same structure as the first absorption chamber 410. The gas recycling device comprises a second bin body 421 for containing an absorbent, a second flue gas inlet 422 arranged at the bottom of the second bin body 421 for introducing gas, a second flue gas outlet 423 arranged at the top of the second bin body 421 for exhausting gas, and a second return opening 424 arranged below the second bin body 421 for returning and repeatedly purifying gas, wherein the second flue gas outlet 423 is connected with the second return opening 424 through a second return pipeline 425, a second exhaust pipe 427 for exhausting gas is further arranged on the second return pipeline 425, and a second three-way valve 426 for controlling the flow direction of the gas is arranged at the joint of the second exhaust pipe 427 and the second return pipeline 425. As a preferable solution of the present technical solution, the second return pipeline 425 includes a second air inlet section connected to the second return port 424, a second air outlet section connected to the second flue gas outlet 423, and a second return section having two ends respectively connected to the second air inlet section and the second air outlet section, and the second return section is provided with a second pneumatic circulation pump 428 for controlling the air flow return speed. In a preferred embodiment of the present invention, the first exhaust pipe 417 is communicated with the second return section, and the second pneumatic circulation pump 428 is disposed below the first exhaust pipe 417. As a preferable scheme of the present technical solution, sealing valves for opening and closing the openings are disposed at the second flue gas inlet 422, the second flue gas outlet 423 and the second backflow port 424. As a preferable scheme of the present invention, sealing valves for opening and closing the openings are disposed at the first flue gas inlet 412, the first flue gas outlet 413, and the first return port 414. In a preferred embodiment of the present invention, the first absorption chamber 410 and the second absorption chamber 420 are symmetrically arranged side by side, and the first exhaust pipe 417 is disposed between the first absorption chamber 410 and the second absorption chamber 420. The two absorption bins 400 are oppositely arranged, so that the pipelines are positioned between the two as much as possible, the pipelines are centralized and convenient to manage, and the pipelines can be protected at the same time. The small particle material discharging component 800 and the large particle material discharging component 900 connected to the bottom of the first absorption bin 410 and the second absorption bin 420 are respectively arranged oppositely, the end parts of the small particle material discharging component 800 and the large particle material discharging component 900 are communicated, the spiral transmission directions of the transmission augers at the bottom of the two absorption bins 400 are opposite, so that the two small particle material discharging components and the large particle material discharging component are discharged from the shared discharging pipe 820 arranged through the center, the shared discharging pipe 820 is convenient for fixing the material receiving position of the conveying line, the smoke pollution source is effectively controlled, and uniform processing is facilitated.

Further, the flue mechanism 500 includes a receiving pipe 510 connected to the bottom of the fixed bed reaction tower, and an air intake flue 520 extending into the receiving pipe 510 from the pipe wall of the receiving pipe 510, the air outlet end of the air intake flue 520 is fixed with a first material blocking member 530, the outer wall of the air intake flue 520 is fixed with a second material blocking member 540, and the height of the first material blocking member 530 is higher than that of the second material blocking member 540. Through in inserting the receiving tube 510 with the flue 520 slope that admits air, avoid influencing the normal collection of receiving tube 510 to the residue, through in the first fender material piece 530 that admits air flue 520 tip set up avoids the residue to get into the flue 520 that admits air, avoid the residue that the flue gas influence has fallen through setting up second fender material piece 540, play certain guide effect to the flue gas simultaneously, avoid the flue gas to spill over through receiving tube 510. Further, the receiving pipe 510 is a funnel-shaped pipe with a thick upper part and a thin lower part. The hopper-shaped pipe is convenient for collecting residues and is convenient for uniformly collecting materials. Further, the air inlet flue 520 is an L-shaped pipeline and comprises an air inlet pipe 521 arranged in an inclined manner and an air outlet pipe 522 arranged vertically, and the air inlet pipe 521 and the air outlet pipe 522 are bent and communicated inside the receiving pipe 510. The air inlet pipe 521 inclines upwards to be arranged, so that residues are prevented from being accumulated on the air inlet pipe 521, and the L-shaped pipeline is arranged to be an obtuse angle, so that the smoke can flow rapidly. Further, the first material blocking part 530 is an umbrella-shaped material blocking plate, and the umbrella-shaped material blocking plate is fixed at the end part of the air inlet flue 520 through a connecting column 531. The umbrella-shaped baffle plate can block fallen residues, so that the fallen residues are prevented from falling into the air inlet flue 520, and meanwhile, the residues slide down the slope of the umbrella cover and fall into the receiving pipe 510. Furthermore, the number of the connecting columns 531 is four, and the four connecting columns 531 are respectively perpendicular to the plate surface of the umbrella-shaped striker plate and fixed. Connecting columns 531 are respectively arranged along the peripheral direction of the air inlet flue 520, so that the material receiving stress of the first material blocking part 530 is shared in the peripheral direction, and the stability of the connecting structure is improved. Further, the second material blocking member 540 is an annular plate, and the annular plate is obliquely and downwardly fixed on the outer wall of the air intake flue 520. The annular plate is fixed in on the outlet duct 522 outer wall, is located umbrella type striker plate below, and the same slope sets up downwards, avoids keeping somewhere the residue. Further, the annular plate is a resetting plate with toughness. The annular plate possesses certain toughness, and when the residue was detained too much on the annular plate, the residue can make the residue fall into receiving tube 510 with annular plate pushing down to avoid piling up of residue, after the residue falls into receiving tube 510, the annular plate resets. Further, the distance from the lower edge of the annular plate to the receiving pipe 510 is smaller than the distance from the lower edge of the umbrella-shaped striker plate to the receiving pipe 510. Flue gas passes through umbrella type striker plate and gets into behind the receiver tube 510, can be preferred upward flow under the negative pressure effect, and when the negative pressure was less, the receiver tube 510 bottom was confined in normal operating, because blockking of annular plate, the flue gas can be preferred to flow to the bigger top space in space, and can not flow to the receiver tube 510 bottom. Further, the annular plate, the umbrella-shaped striker plate and the air outlet pipe 522 are coaxially arranged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.