Treatment device for tail gas generated in production of polyaluminum chloride

Abstract

The invention discloses a polyaluminum chloride production tail gas treatment device, and relates to the technical field of tail gas treatment, the polyaluminum chloride production tail gas treatment device comprises a neutralization assembly, the neutralization assembly comprises a support, a cylinder, a vortex cylinder and a guide cylinder; wherein the cylinder body is fixed with the support, the cylinder body is vertically arranged on the support, a fixing hole coaxial with the cylinder body is formed in the bottom of the cylinder body, one end of the guide cylinder is fixed in the fixing hole, the other end of the guide cylinder is of a dome structure, and a through hole coaxial with the guide cylinder is formed in the top of the dome structure. Tail gas can be sprayed out in the form of an annular air cannon, the air cannon impacts the circular plate separator, the annular air cannon is evenly dispersed in the circular plate separator, alkaline water mist in the tail gas is transversely dispersed, the alkaline water mist is not prone to being taken away by the rising tail gas, and the tail gas dispersed in the circular plate separator is blocked by an annular blocking strip on the circular plate separator; alkaline fog water in the tail gas is captured by the annular barrier strip, so that the water removal effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas treatment, in particular to a device for treating tail gas produced by polyaluminium chloride. Background Art

[0002] The existing technology adopts the aluminum hydroxide method to formulate polyaluminum chloride, which is one of the methods for obtaining polyaluminum chloride. That is, aluminum hydroxide is generally heated and pressurized and then reacted with hydrochloric acid, and then calcium aluminate powder is added for neutralization. During the production process, hydrochloric acid evaporates due to heat, generating hydrochloric acid gas. The hydrochloric acid gas is directly discharged into the air, causing environmental pollution and further affecting the health of employees. In addition, the exhaust gas generated contains a large amount of dust and soluble dust.

[0003] After searching, the Chinese patent with publication number CN220003332U discloses a device for treating tail gas from the production of polyaluminium chloride, comprising a treatment box, a filter plate 1 is fixedly installed inside the treatment box, the filter plate 1 divides the inside of the treatment box into a filter chamber and a neutralization reaction chamber, a filter plate 2 is installed in the filter chamber, a plate cleaning mechanism is arranged in the filter chamber and is in contact with the outer surfaces of the filter plate 1 and the filter plate 2, a plurality of groups of spoilers are fixedly installed in the neutralization reaction chamber, and the plurality of groups of spoilers are arranged on the top and bottom inner walls of the treatment box in a horizontally staggered manner, a uniformly distributed solvent spraying unit is arranged in the treatment box corresponding to the neutralization reaction chamber, dust particles in the tail gas are first filtered in the filter chamber, and the tail gas entering the neutralization reaction chamber will change the flow trajectory of the tail gas after filtration in the neutralization reaction chamber, thereby increasing the residence time of the tail gas in the neutralization reaction chamber, so that the contact time between the tail gas and the solution is long and sufficient, thereby improving the treatment effect of the tail gas.

[0004] Based on the above search and the prior art, it is found that the neutralized tail gas will bring out the atomized alkaline solution, and the gas-liquid separation treatment problem is not considered, so that the discharged tail gas contains alkaline solution, which will pollute the external environment. Summary of the invention

[0005] The object of the present invention is to provide a device for treating tail gas from the production of polyaluminium chloride to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is: a device for treating tail gas produced by polyaluminium chloride, comprising a neutralisation component, wherein the neutralisation component comprises a support, a cylinder, a vortex cylinder and a guide cylinder;

[0007] The cylinder is fixed to the bracket, and the cylinder is vertically arranged on the bracket. A fixing hole coaxially arranged therewith is provided at the bottom of the cylinder. One end of the guide cylinder is fixed in the fixing hole. The other end of the guide cylinder is in a dome structure, and a through hole coaxially arranged therewith is provided at the top of the dome structure.

[0008] The overall profile of the vortex cylinder is in the shape of a Guanyin bottle. The small diameter end of the vortex cylinder is sleeved on the guide cylinder, and the vortex cylinder and the guide cylinder are coaxially arranged. There is a gap between the vortex cylinder and the guide cylinder. A plurality of connecting blocks are fixed to the inner side of the small diameter end of the vortex cylinder and the outer side of the guide cylinder.

[0009] The outer side of the cylinder is provided with an air delivery component, which compresses the tail gas and delivers it intermittently into the guide cylinder;

[0010] A mounting hole is provided on the outer side of the small diameter end of the vortex cylinder, an atomizing nozzle is fixed inside the mounting hole, and the atomizing nozzle is located above the guide cylinder, and a liquid delivery component for delivering alkaline water to the atomizing nozzle is provided on the outer side of the cylinder;

[0011] A circular plate separator is arranged inside the cylinder, and the circular plate separator is located above the vortex cylinder. A plurality of elastic structures are arranged between the outer side of the circular plate separator and the inner side of the cylinder. The circular plate separator is in the shape of a circular plate as a whole, and a plurality of fine holes are opened on the plate surface of the circular plate separator.

[0012] Preferably, the air supply assembly includes a vortex dust collector and an air compressor, the air outlet end of the vortex dust collector is connected to the air inlet end of the air compressor, and a release assembly is provided between the air outlet end of the air compressor and the guide tube.

[0013] Preferably, the release assembly includes an intermediate cylinder, multiple connecting pipes and multiple solenoid valves. The bottom of the intermediate cylinder is connected to the air outlet end of the air compressor, one end of the multiple connecting pipes is connected to the bottom end of the guide cylinder, and the other end of the multiple connecting pipes is connected one-to-one with multiple solenoid valves, and the multiple solenoid valves are all connected to the intermediate cylinder.

[0014] Preferably, the liquid delivery component includes a liquid storage tank, a liquid pump and a drainage tube, the drainage tube is plugged and fixed on the cylinder, and one end of the drainage tube is connected to the atomizing nozzle, the water outlet end of the liquid pump is connected to the drainage tube, and the water inlet end of the liquid pump is connected to the liquid storage tank.

[0015] Preferably, the elastic structure includes a fixing rod and a spring, the outer side of the cylinder protrudes outward to form an annular cavity, and the fixing rod is located in the annular cavity with two ends respectively fixed at the top and bottom of the annular cavity, the circular plate separator is slidably mounted on the fixing rod, and the spring is mounted on the fixing rod, and the two ends of the spring are respectively in contact with the top of the annular cavity and the circular plate separator.

[0016] Preferably, a rubber layer is fixed to the bottom of the circular plate separator, and the material of the rubber layer is acid-resistant and alkali-resistant rubber.

[0017] Preferably, a plurality of annular baffles with increasing diameters are fixed to the bottom of the circular plate separator, and the circular plate separator and the annular baffles are coaxially arranged.

[0018] Preferably, the cross section of the annular baffle is an arc shape that bends toward the circular plate separator.

[0019] Preferably, an air induced hole is opened on the top of the cylinder, an induced draft fan is fixedly installed inside the air induced hole, a demister is fixedly installed inside the cylinder, and the demister is located above the circular plate separator.

[0020] Preferably, the bottom of the cylinder is recessed to one side to form a funnel, and a U-shaped tube connected to the bottom end of the funnel is fixed thereto.

[0021] The present invention provides a treatment device for tail gas produced by polyaluminium chloride by improving the process, which has the following beneficial effects compared with the prior art:

[0022] First, the present invention can eject the exhaust gas in the form of an annular air cannon, which impacts the circular plate separator. The annular air cannon is evenly dispersed in the circular plate separator, and the alkaline water mist in the exhaust gas is dispersed horizontally, so that the alkaline water mist is not easily carried away by the rising exhaust gas. The exhaust gas dispersed in the circular plate separator is blocked by the annular baffle on the circular plate separator, and the alkaline mist water in the exhaust gas is captured by the annular baffle, thereby improving the water removal effect;

[0023] Second, the cross section of the annular baffle of the present invention is an arc shape bent toward the circular plate separator, and the exhaust gas forms a turbine in the annular baffle to throw out the alkaline mist water in the exhaust gas, further improving the water removal effect;

[0024] Thirdly, the circular plate separator of the present invention is provided with an elastic structure around it. The air cannon impacts the circular plate separator, and the circular plate separator is pushed upward. After the air cannon disperses, the circular plate separator is reset in time. The circular plate separator impacts the next wave of annular air cannons, and the alkaline mist water in the tail gas is knocked off. At the same time, the alkaline mist water attached to the circular plate separator is shaken off, further improving the water removal effect.

[0025] Fourthly, the tail flow in the annular air cannon rotates, and the alkaline mist water in the tail gas is thrown out due to the large centrifugal force. It can be seen that the tail flow can be removed by the centrifugal force during the process of being sprayed by the annular air cannon.

[0026] Fifth, the compressed exhaust gas flows in the vortex cylinder with a Guanyin bottle structure, and the atomizer is arranged at the tail section of the vortex cylinder. Since the tail section is a small-diameter end, the exhaust gas and the atomized alkaline water are compressed in the tail section, thereby achieving compression mixing and improving the contact degree between the two. At the same time, the large-diameter end of the vortex cylinder releases and expands, and the atomized alkaline water is evenly dispersed, thereby increasing the contact area with the exhaust gas, thereby improving the neutralization efficiency;

[0027] Sixth, the exhaust gas is ejected from the guide tube. Since the top of the guide tube is dome-shaped, the exhaust gas is compressed and ejected quickly. At this time, the ejected airflow is in a vortex shape and contacts with the atomized alkaline water. The two are easier to mix, thereby improving the neutralization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the neutralization component of the present invention;

[0031] Figure 3 It is a schematic diagram of the internal structure of the neutralization component of the present invention;

[0032] Figure 4 It is a schematic cross-sectional structural diagram of the neutralization component of the present invention;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the vortex tube of the present invention;

[0034] Figure 6 It is a schematic diagram of the internal structure of the vortex tube of the present invention;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the circular plate separator of the present invention from the first perspective;

[0036] Figure 8 It is a schematic diagram of the three-dimensional structure of the circular plate separator of the present invention from a second viewing angle;

[0037] Fig. 9 It is a schematic diagram of the structure of the release component of the present invention;

[0038] Fig.10 It is a schematic diagram of the working of the vortex tube of the present invention;

[0039] Fig.11 It is a working schematic diagram of the guide tube of the present invention;

[0040] Fig.12 It is a schematic diagram of the air vortex cannon of the present invention spraying toward the circular plate separator;

[0041] Fig.13 It is a working schematic diagram of the annular baffle of the present invention.

[0042] Reference numerals:

[0043] 1. Neutralization assembly; 2. Liquid pump; 3. Liquid storage tank; 4. Vortex dust collector; 5. Air compressor; 6. Cylinder; 7. Release assembly; 8. Drainage pipe; 9. Draft fan; 10. U-shaped pipe; 11. Circular plate separator; 12. Spring; 13. Fixed rod; 14. Demister; 15. Vortex cylinder; 16. Guide cylinder; 17. Dome structure; 18. Connecting block; 19. Annular baffle; 20. Intermediate cylinder; 21. Solenoid valve; 22. Connecting pipe; 23. Atomizing nozzle; 24. Rubber layer. DETAILED DESCRIPTION

[0044] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The present invention provides a treatment device for tail gas produced by polyaluminium chloride by improvement. The technical solution of the present invention is:

[0046] like Figures 1 to 13 As shown, an embodiment of the present invention provides a device for treating tail gas produced by polyaluminium chloride, comprising a neutralisation component 1, wherein the neutralisation component 1 comprises a support, a cylinder 6, a vortex cylinder 15 and a guide cylinder 16;

[0047] The cylinder 6 is fixed to the bracket, and the cylinder 6 is vertically arranged on the bracket. A fixing hole coaxially arranged therewith is provided at the bottom of the cylinder 6. One end of the guide cylinder 16 is fixed in the fixing hole. The other end of the guide cylinder 16 is a dome structure 17, and a through hole coaxially arranged therewith is provided at the top of the dome structure 17. The compressed exhaust gas enters the guide cylinder 16, and the exhaust gas enters the dome structure 17 on the guide cylinder 16, and is ejected from the through hole of the dome structure 17. Since the air flowing in the center of the dome structure 17 is faster than the air flowing at the edge of the through hole, a vortex is formed, and the formation result is as shown in the attached figure. Fig.11 As shown;

[0048] The overall profile of the vortex tube 15 is in the shape of a Guanyin bottle. The small diameter end of the vortex tube 15 is sleeved on the guide tube 16, and the vortex tube 15 and the guide tube 16 are coaxially arranged. There is a gap between the vortex tube 15 and the guide tube 16. A plurality of connecting blocks 18 are fixed to the inner side of the small diameter end of the vortex tube 15 and the outer side of the guide tube 16. The airflow ejected from the guide tube 16 enters the small diameter end of the vortex tube 15 and is compressed. Since the overall profile of the vortex tube 15 is in the shape of a Guanyin bottle, the small diameter end of the vortex tube 15 has a longer expansion part that can shorten the pressure wave, and the narrowed top of the vortex tube 15 can compress the airflow and eject it quickly. Since the air flowing in the center of the vortex tube 15 is faster than the air flowing at the edge of the through hole, a vortex is formed, thereby forming an annular air cannon. The formation process of the annular air cannon is shown in the attached figure Fig.10 The results of the annular air cannon are shown in the attached Fig.12 As shown;

[0049] An air delivery assembly is disposed outside the cylinder 6, and the air delivery assembly compresses the exhaust gas and delivers it intermittently into the guide cylinder 16;

[0050] A mounting hole is provided on the outside of the small diameter end of the vortex tube 15, and an atomizing nozzle 23 is fixed inside the mounting hole, and the atomizing nozzle 23 is located above the guide tube 16. A liquid delivery component for delivering alkaline water to the atomizing nozzle 23 is provided on the outside of the cylinder 6. The airflow sprayed from the guide tube 16 is in a vortex shape, and the airflow contacts the atomized alkaline water, and the two are easier to mix;

[0051] A circular plate separator 11 is provided inside the cylinder 6. The circular plate separator 11 is located above the vortex cylinder 15. A plurality of elastic structures are provided between the outer side of the circular plate separator 11 and the inner side of the cylinder 6. The circular plate separator 11 is in the shape of a circular plate as a whole, and a plurality of fine holes are provided on the plate surface of the circular plate separator 11. The annular air cannon formed by the exhaust gas impacts the circular plate separator 11, and the annular air cannon is evenly dispersed in the circular plate separator 11. The alkaline water mist in the exhaust gas is dispersed laterally, so that the alkaline water mist is not easily carried away by the rising exhaust gas.

[0052] Specifically, in combination with Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Fig. 9 As shown, the air supply component includes a vortex dust collector 4 and an air compressor 5. The dry exhaust gas is sent to the vortex dust collector 4 for dust removal. The outlet end of the vortex dust collector 4 is connected to the inlet end of the air compressor 5. The exhaust gas after dust removal is pressurized by the air compressor 5 to form a high-speed airflow. A release component 7 is arranged between the outlet end of the air compressor 5 and the guide tube 16.

[0053] Specifically, in combination with Figure 3 And attached Fig. 9As shown, the release assembly 7 includes an intermediate cylinder 20, a plurality of connecting tubes 22 and a plurality of solenoid valves 21. The bottom of the intermediate cylinder 20 is connected to the air outlet end of the air compressor 5, one end of the plurality of connecting tubes 22 is connected to the bottom end of the guide cylinder 16, and the other end of the plurality of connecting tubes 22 is connected one-to-one with a plurality of solenoid valves 21, and the plurality of solenoid valves 21 are all connected to the intermediate cylinder 20; the high-speed airflow enters the intermediate cylinder 20, and at this time, each solenoid valve 21 is opened and closed at a certain time interval, so that the high-speed airflow is intermittently sent into the guide cylinder 16.

[0054] Specifically, in combination with Figure 1 As shown, the liquid delivery component includes a liquid storage tank 3, a liquid pump 2 and a drainage pipe 8. The drainage pipe 8 is plugged and fixed on the cylinder 6, and one end of the drainage pipe 8 is connected to the atomizing nozzle 23. The water outlet end of the liquid pump 2 is connected to the drainage pipe 8, and the water inlet end of the liquid pump 2 is connected to the liquid storage tank 3. The liquid pump 2 introduces the alkaline water in the liquid storage tank 3 into the drainage pipe 8. The alkaline water in the drainage pipe 8 is sprayed out in the form of water mist after being processed by the atomizing nozzle 23.

[0055] Specifically, in combination with Figure 3 , Attachment Figure 4 And attached Fig.12 As shown, the elastic structure includes a fixing rod 13 and a spring 12, the outer side of the cylinder 6 protrudes outward to form an annular cavity, and the fixing rod 13 is located in the annular cavity and the two ends are respectively fixed on the top and the bottom of the annular cavity, the circular plate separator 11 is slidably mounted on the fixing rod 13, and the spring 12 is mounted on the fixing rod 13, and the two ends of the spring 12 are respectively in contact with the top of the annular cavity and the circular plate separator 11; the air cannon impacts the circular plate separator 11, the circular plate separator 11 is pushed upward, the spring 12 is compressed, and after the air cannon is dispersed, the circular plate separator 11 is reset in time, and the circular plate separator 11 is confronted with the next wave of annular air cannons to knock down the alkaline mist water in the exhaust gas, and at the same time shake off the alkaline mist water attached to the circular plate separator 11.

[0056] Specifically, in combination with Fig.12 As shown, a rubber layer 24 for buffering is fixed to the bottom of the circular plate separator 11, and the material of the rubber layer 24 is acid-resistant and alkali-resistant rubber.

[0057] Specifically, in combination with Figure 7 , Attachment Figure 8 And attached Fig.13As shown, a plurality of annular baffles 19 with increasing diameters are fixed to the bottom of the circular plate separator 11, and the circular plate separator 11 and the annular baffles 19 are coaxially arranged, and the cross section of the annular baffles 19 is an arc shape bent toward the circular plate separator 11; the exhaust gas dispersed by the circular plate separator 11 is blocked by the annular baffles 19 on the circular plate separator 11, and the alkaline mist water in the exhaust gas is captured by the annular baffles 19. Since the cross section of the annular baffles 19 is an arc shape bent toward the circular plate separator 11, the exhaust gas forms a turbine at the annular baffles 19, and the alkaline mist water in the exhaust gas is thrown out, thereby further improving the water removal effect.

[0058] Specifically, an air ducting hole is opened at the top of the cylinder 6, and an induced draft fan 9 is fixedly installed inside the air ducting hole. The induced draft fan 9 is used to draw out the neutralized exhaust gas. A demister 14 for removing water mist is fixedly installed inside the cylinder 6 (the principle is consistent with the demister used in the existing spray tower. Since it is a prior art, its specific structure and working principle are not explained here. The figure shows a corrugated plate demister), and the demister 14 is located above the circular plate separator 11.

[0059] Specifically, the bottom of the cylinder 6 is recessed to one side to form a funnel, and a U-shaped tube 10 connected thereto is fixed to the bottom end of the funnel. The neutralized alkaline water accumulates in the U-shaped tube 10 to form a liquid surface to prevent the exhaust gas from flowing out.

[0060] Working principle: The dry exhaust gas is sent to the vortex dust collector 4 for dust removal. The dust-removed exhaust gas is pressurized by the air compressor 5 to form a high-speed airflow, which enters the intermediate cylinder 20. At this time, each solenoid valve 21 is opened and closed at a certain time interval, so that the high-speed airflow is intermittently sent into the guide cylinder 16;

[0061] The compressed exhaust gas enters the guide tube 16, and then enters the dome structure 17 on the guide tube 16 and is ejected from the through hole of the dome structure 17. Since the air flowing in the center of the dome structure 17 is faster than the air flowing at the edge of the through hole, a vortex is formed, and the formation result is as shown in the attached figure. Fig.11 As shown;

[0062] The airflow ejected from the guide tube 16 is in a vortex shape, and the airflow contacts the atomized alkaline water, and the two are more easily mixed;

[0063] The airflow ejected from the guide tube 16 enters the small diameter end of the vortex tube 15 and is compressed. Since the overall profile of the vortex tube 15 is in the shape of a Guanyin bottle, the small diameter end of the vortex tube 15 has a longer expansion portion to shorten the pressure wave, and the narrowing of the top of the vortex tube 15 can compress the airflow and make the airflow ejected quickly. Since the air flowing in the center of the vortex tube 15 flows faster than the air flowing at the edge of the through hole, a vortex is formed, thereby forming an annular air cannon. The formation process of the annular air cannon is shown in the attached figure. Fig.10 The results of the annular air cannon are shown in the attached Fig.12 As shown;

[0064] The tail flow in the annular air cannon rotates and the alkaline mist water in the tail gas is thrown out due to the large centrifugal force. It can be seen that the tail flow can be dehydrated by the centrifugal force during the process of being sprayed by the annular air cannon.

[0065] The annular air cannon formed by the tail gas impacts the circular plate separator 11, and the annular air cannon is evenly dispersed in the circular plate separator 11, and the alkaline water mist in the tail gas is dispersed horizontally, so that the alkaline water mist is not easily carried away by the rising tail gas;

[0066] The tail gas dispersed by the disc separator 11 is blocked by the annular baffle 19 on the disc separator 11, and the alkaline mist water in the tail gas is captured by the annular baffle 19. Since the cross section of the annular baffle 19 is an arc shape bent toward the disc separator 11, the tail gas forms a turbine at the annular baffle 19, and the alkaline mist water in the tail gas is thrown out, further improving the water removal effect;

[0067] The annular air cannon impacts the circular plate separator 11, and the circular plate separator 11 is pushed upward, the spring 12 is compressed, and after the air cannon is dispersed, the circular plate separator 11 is reset in time, and the circular plate separator 11 impacts the next wave of annular air cannons, knocking down the alkaline mist water in the exhaust gas, and shaking off the alkaline mist water attached to the circular plate separator 11.

[0068] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for treating tail gas from the production of polyaluminium chloride, comprising a neutralisation component (1), characterized in that: The neutralization component (1) comprises a bracket, a cylinder (6), a vortex cylinder (15) and a guide cylinder (16); The cylinder (6) is fixed to the bracket, and the cylinder (6) is vertically arranged on the bracket, a fixing hole coaxially arranged therewith is provided at the bottom of the cylinder (6), one end of the guide cylinder (16) is fixed in the fixing hole, the other end of the guide cylinder (16) is in the form of a dome structure (17), and a through hole coaxially arranged therewith is provided at the top of the dome structure (17); The overall profile of the vortex cylinder (15) is in the shape of a Guanyin bottle. The small-diameter end of the vortex cylinder (15) is sleeved on the guide cylinder (16), and the vortex cylinder (15) and the guide cylinder (16) are coaxially arranged. A gap exists between the vortex cylinder (15) and the guide cylinder (16). A plurality of connecting blocks (18) are fixed to the inner side of the small-diameter end of the vortex cylinder (15) and the outer side of the guide cylinder (16); An air delivery component is arranged outside the cylinder (6), and the air delivery component compresses the tail gas and delivers it intermittently into the guide cylinder (16); A mounting hole is provided on the outside of the small-diameter end of the vortex cylinder (15), an atomizing nozzle (23) is fixed inside the mounting hole, and the atomizing nozzle (23) is located above the guide cylinder (16), and a liquid delivery component for delivering alkaline water to the atomizing nozzle (23) is provided on the outside of the cylinder (6); A circular plate separator (11) is arranged inside the cylinder (6), and the circular plate separator (11) is located above the vortex cylinder (15). A plurality of elastic structures are arranged between the outer side of the circular plate separator (11) and the inner side of the cylinder (6). The circular plate separator (11) is in the shape of a circular plate as a whole, and a plurality of fine holes are provided on the plate surface of the circular plate separator (11).

2. A processing device for tail gas from polyaluminium chloride production according to claim 1, characterized in that: The air delivery component comprises a vortex dust collector (4) and an air compressor (5); the air outlet end of the vortex dust collector (4) is connected to the air inlet end of the air compressor (5); and a release component (7) is provided between the air outlet end of the air compressor (5) and the guide tube (16).

3. A processing device for tail gas produced by polyaluminium chloride according to claim 2, characterized in that: The release assembly (7) comprises an intermediate cylinder (20), a plurality of connecting pipes (22) and a plurality of solenoid valves (21); the bottom of the intermediate cylinder (20) is connected to the air outlet of the air compressor (5); one end of the plurality of connecting pipes (22) is connected to the bottom end of the guide cylinder (16); the other end of the plurality of connecting pipes (22) is connected one-to-one to the plurality of solenoid valves (21); and the plurality of solenoid valves (21) are all connected to the intermediate cylinder (20).

4. A processing device for tail gas from polyaluminium chloride production according to claim 1, characterized in that: The liquid delivery assembly comprises a liquid storage tank (3), a liquid pump (2) and a drainage pipe (8); the drainage pipe (8) is plugged and fixed on the cylinder (6), and one end of the drainage pipe (8) is connected to the atomizing nozzle (23); the water outlet end of the liquid pump (2) is connected to the drainage pipe (8), and the water inlet end of the liquid pump (2) is connected to the liquid storage tank (3).

5. A processing device for tail gas from polyaluminium chloride production according to claim 1, characterized in that: The elastic structure comprises a fixing rod (13) and a spring (12); the outer side of the cylinder (6) protrudes outward to form an annular cavity; the fixing rod (13) is located in the annular cavity and its two ends are respectively fixed to the top and the bottom of the annular cavity; the circular plate separator (11) is slidably mounted on the fixing rod (13); the spring (12) is mounted on the fixing rod (13); and the two ends of the spring (12) are respectively in contact with the top of the annular cavity and the circular plate separator (11).

6. A processing device for tail gas from polyaluminium chloride production according to claim 1, characterized in that: A rubber layer (24) is fixed to the bottom of the circular plate separator (11), and the material of the rubber layer (24) is acid-resistant and alkali-resistant rubber.

7. A processing device for tail gas from polyaluminium chloride production according to claim 1, characterized in that: A plurality of annular retaining bars (19) with increasing diameters are fixed to the bottom of the circular plate separator (11), and the circular plate separator (11) and the annular retaining bars (19) are coaxially arranged.

8. A processing device for tail gas from the production of polyaluminium chloride according to claim 7, characterized in that: The cross section of the annular baffle (19) is in the shape of an arc that bends toward the circular plate separator (11).

9. The device for treating tail gas from the production of polyaluminium chloride according to claim 1, characterized in that: An air induced hole is provided at the top of the cylinder (6), an induced draft fan (9) is fixedly installed inside the air induced hole, a demister (14) is fixedly installed inside the cylinder (6), and the demister (14) is located above the circular plate separator (11).

10. The device for treating tail gas from the production of polyaluminium chloride according to claim 1, characterized in that: The bottom of the cylinder (6) is recessed toward one side to form a funnel, and a U-shaped tube (10) connected to the bottom end of the funnel is fixed thereto.

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