Chemical tail gas purification and absorption device and method

Abstract

The invention discloses a chemical tail gas purification and absorption device and method, and relates to the technical field of tail gas purification and absorbing.The chemical tail gas purification and absorption device comprises a treatment tank, a gas inlet is fixedly formed in the outer wall of the treatment tank, a gas outlet is fixedly formed in the top of the treatment tank, spraying tanks are arranged on the two sides of the treatment tank, and spraying pipes are fixedly mounted at the tops of the spraying tanks; a water pumping device is mounted between the spraying tank and the treatment tank in a communicating manner; the spraying device is arranged on the surface of the spraying pipe, the spraying device comprises a supporting frame, a driving fan, a fixing rod, a circular plate, a circular block, a spraying box, a fixing plate, an L-shaped plate, a semicircular plate and a scraping plate, purified gas is exhausted by driving the fan to rotate, and sprayed liquid is splashed out when impacting the L-shaped plate through dislocation of a spraying head and a circular hole, so that the spraying effect of the spraying device is improved. The sputtered liquid is wider, the spraying effect is improved by enabling the liquid to be sprayed more widely, and the absorption efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas purification and absorption, and in particular to a chemical tail gas purification and absorption device and method. Background Art

[0002] Chemical waste gas refers to toxic and harmful gases discharged by chemical plants during chemical production. Chemical waste gas often contains many types of pollutants with complex physical and chemical properties and different toxicities, which seriously pollute the environment and affect human health.

[0003] The patent with patent announcement number CN214319664U relates to a chemical exhaust gas purification and absorption device, including a tower body, wherein a purification component is arranged inside the exhaust pipe. The chemical exhaust gas purification and absorption device can adsorb and purify acid mist and dust particles in the chemical exhaust gas through the arrangement of a ceramic layer, a zeolite layer and an activated carbon layer, thereby improving the overall purification effect. At the same time, through the connection between the bayonet and the slot, and the clearance between the ring and the exhaust pipe, under the transmission of the support rod, the downward pressing of the ring can drive the bayonet to slide outward, thereby realizing the rapid disassembly and assembly of the bracket and the exhaust pipe, thereby facilitating the replacement and regeneration of the ceramic layer, zeolite layer and activated carbon layer inside, so that the sodium hydroxide solution can be discharged evenly, increasing the contact area with the chemical exhaust gas, thereby improving the desulfurization and dust removal effects, and can guide the exhaust gas, thereby overcoming the shortcomings of low chemical exhaust gas treatment efficiency and large air resistance.

[0004] In the above patent, the contact area with the chemical exhaust gas is increased to improve the desulfurization and dust removal effects, and the exhaust gas can be guided to overcome the shortcomings of low chemical exhaust gas treatment efficiency and large gas resistance. However, during use, the spraying range of the sodium hydroxide solution may not be wide enough, resulting in the inability to effectively absorb part of the exhaust gas. At the same time, the nozzle may be blocked by the particulate matter in the exhaust gas, resulting in the nozzle being unable to spray effectively, resulting in the exhaust gas being unable to be effectively dissolved, causing environmental pollution. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a chemical tail gas purification absorption device and method, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a chemical tail gas purification and absorption device, comprising: a treatment tank, an air inlet is fixedly installed on the outer wall of the treatment tank, an air outlet is fixedly installed on the top of the treatment tank, spray tanks are arranged on both sides of the treatment tank, a spray pipe is fixedly installed on the top of the spray tank, and a pumping device is installed between the spray tank and the treatment tank; a spray device, the spray device is arranged on the surface of the spray pipe, and the spray device includes a support frame, a driving fan, a fixed rod, a circular plate, a circular block, a spray box, a fixed plate, an L-shaped plate, a semicircular plate and a scraper, and the purified gas is discharged by driving the fan to rotate, the driving fan rotation will drive the fixed rod to rotate, the fixed rod rotation will drive the circular plate to rotate, the circular plate rotation will drive the circular block to rotate, and the The support frame is fixedly mounted on the inner wall of the treatment tank, the driving fan is fixedly mounted on the inner wall of the support frame, the fixing rod is fixedly mounted on the output end of the driving fan, the circular plate is fixedly mounted on the bottom of the fixing rod, the circular block is fixedly mounted on the top of the circular plate, the spray box is fixedly mounted on the end of the spray pipe away from the spray tank, a nozzle is arranged at the bottom of the spray box, the fixing plate is fixedly mounted on the side of the spray box close to the treatment tank, the L-shaped plate is slidably mounted on the bottom of the fixing plate, the semicircular plate is fixedly mounted on the end of the L-shaped plate away from the fixing plate, the scraper is fixedly mounted on the top of the L-shaped plate, a circular hole is opened on the surface of the L-shaped plate, the movement of the L-shaped plate in the direction away from the circular plate will drive the scraper to move in the direction away from the circular plate, and the movement of the scraper in the direction away from the circular plate will scrape the bottom of the nozzle.

[0007] According to the above technical solution, a spring No. 1 is arranged between the L-shaped plate and the fixed plate, and the L-shaped plate is reset by the spring No. 1. The scraper is arranged at the bottom of the nozzle, and the nozzle is scraped by the scraper to prevent the nozzle from being blocked.

[0008] According to the above technical solution, a scraping device for scraping the inside of the processing tank is provided at the bottom of the circular plate, and a feeding device is provided on the scraping device. The scraping device includes a reciprocating screw, a threaded block, a connecting rod and an arc-shaped scraper. The reciprocating screw is driven to rotate by the rotation of the circular plate, and the rotation of the reciprocating screw will drive the threaded block to reciprocate up and down. The up and down reciprocating movement of the threaded block will drive the connecting rod to reciprocate up and down. The reciprocating screw is fixedly installed on the bottom of the circular plate, the threaded block is threadedly installed on the circumferential surface of the reciprocating screw, the connecting rod is fixedly installed on the circumferential surface of the threaded block, the arc-shaped scraper is fixedly installed on the end of the connecting rod away from the threaded block, and the arc-shaped scraper is slidably installed on the inner wall of the processing tank.

[0009] According to the above technical solution, a short rod is fixedly installed at the bottom of the connecting rod, a hollow ring is fixedly installed at the bottom of the short rod, a sliding groove is opened on the surface of the reciprocating screw, and a stirring plate is slidably installed on the inner wall of the sliding groove. The downward movement of the hollow ring will push the stirring plate to slide downward along the direction of the sliding groove, and the rotation of the reciprocating screw will drive the stirring plate to rotate.

[0010] According to the above technical solution, the hollow ring is arranged above the stirring plate, and a No. 2 spring is arranged between the stirring plate and the slide groove, and the stirring plate is driven to reset by the No. 2 spring.

[0011] According to the above technical solution, the feeding device includes a connecting plate, an L-shaped frame, a liquid storage tank, a discharge port, an elastic telescopic rod and a sealing baffle. The connecting plate is driven to move downward by the downward movement of the hollow ring. The connecting plate will contact the sealing baffle when it moves downward, and the connecting plate will push the sealing baffle to move downward. The connecting plate is fixedly installed on the circumferential surface of the hollow ring, the L-shaped frame is fixedly installed on the inner wall of the processing tank, the liquid storage tank is fixedly installed on the bottom of the L-shaped frame, the discharge port is connected and installed on the bottom of the liquid storage tank, the elastic telescopic rod is fixedly installed on the bottom of the liquid storage tank, and the sealing baffle is fixedly installed on the free end of the elastic telescopic rod.

[0012] According to the above technical solution, a long rod is fixedly installed on the top of the sealing baffle, and a sealing plate is arranged on the top of the long rod. The upward movement of the long rod will drive the sealing plate to move upward, and the upward movement of the sealing plate will cause the absorbent to flow into the discharge port again.

[0013] According to the above technical solution, the connecting plate is arranged above the sealing baffle, and the sealing baffle is pushed downward by the connecting plate to release the absorbent. The sealing baffle contacts the surface of the discharge port, and the sealing baffle contacts the discharge port to prevent the continuous inflow of absorbent and cause waste of resources.

[0014] A method for using a chemical tail gas purification absorption device comprises the following steps:

[0015] Step 1: Connect the air inlet to the exhaust pipe to allow the exhaust gas to enter the treatment tank, and spray the exhaust gas through the spray tank and the spray pipe. Spraying liquid increases the contact area between the gas and the liquid, so that the harmful substances in the exhaust gas are dissolved or reacted, and the gas is purified under the action of the spray liquid;

[0016] Step 2: The purified gas is discharged by driving the fan to rotate, the driving fan rotates to drive the fixed rod to rotate, the fixed rod rotates to drive the circular plate to rotate, the circular plate rotates to drive the circular block to rotate, the circular block contacts the semicircular plate during the rotation process, and the circular block pushes the semicircular plate to move away from the circular plate;

[0017] Step 3: The semicircular plate moves away from the circular plate to drive the L-shaped plate to move away from the circular plate, and the L-shaped plate moves away from the circular plate to drive the circular hole to move. The sprayed liquid impacts the L-shaped plate and splashes out through the misalignment of the nozzle and the circular hole. The splashed liquid is more extensive, and the spraying effect is improved by making the liquid spray more extensively, and the absorption efficiency is improved;

[0018] Step 4: The L-shaped plate moves away from the circular plate to drive the scraper to move away from the circular plate. The scraper moves away from the circular plate to scrape the bottom of the nozzle to prevent pollutants in the exhaust gas from clogging the nozzle, resulting in ineffective spraying, ineffective dissolution of the exhaust gas, and causing environmental pollution.

[0019] The present invention provides a chemical tail gas purification absorption device and method, which has the following beneficial effects:

[0020] (1) The invention sprays the incoming exhaust gas through the cooperation of a spray tank and a spray pipe, and increases the contact area between the gas and the liquid by spraying liquid, so that harmful substances in the exhaust gas are dissolved or reacted, and the gas is purified under the action of the spray liquid. At the same time, the nozzle and the circular hole are misaligned, so that the sprayed liquid will splash out when it hits the L-shaped plate, and the splashed liquid will be more extensive. By making the liquid spray more widely, the spraying effect is improved, and the absorption efficiency is improved. The scraper is moved in the direction away from the circular plate to scrape the bottom of the nozzle to prevent the pollutants in the exhaust gas from clogging the nozzle, resulting in ineffective spraying, ineffective dissolution of the exhaust gas, and environmental pollution.

[0021] (2) The invention scrapes the liquid on the inner wall of the treatment tank by reciprocating up and down the arc-shaped scraper, thereby preventing the liquid from remaining on the inner wall of the treatment tank, which would cause bacteria to grow inside the treatment tank and reduce the service life of the treatment tank. The downward movement of the short rod will drive the hollow ring to move downward, and the downward movement of the hollow ring will push the stirring plate to slide downward along the direction of the slide groove. At the same time, the rotation of the reciprocating screw will drive the stirring plate to rotate. The stirring plate rotates during its downward movement, so that solutions at different water levels at the bottom can be stirred, thereby improving the mixing effect of the solution and the exhaust gas.

[0022] (3) In the present invention, the hollow ring moves downward to drive the connecting plate to move downward. The connecting plate moves downward to contact the sealing baffle, which pushes the sealing baffle to move downward. The sealing baffle moves downward to release the contact with the discharge port, allowing the absorbent in the liquid storage tank to flow out. The absorbent will mix with the solution to improve the absorption effect of the solution. At the same time, when the long rod moves upward, it will drive the sealing plate to move upward. The upward movement of the sealing plate will cause the absorbent to flow into the discharge port again. Through intermittent quantitative input, excessive use of absorbent can be effectively avoided, thereby reducing waste and lowering operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the spray device of the present invention;

[0026] Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement of part A;

[0027] Figure 5 It is a schematic diagram of the structure of the scraping device of the present invention;

[0028] Figure 6 For the present invention Figure 5 A schematic diagram of the structure of part B in the middle is enlarged;

[0029] Figure 7 It is a schematic diagram of the structure of the liquid storage tank of the present invention.

[0030] In the figure: 1. treatment tank; 2. air inlet; 3. air outlet; 4. spray tank; 5. spray pipe; 6. pumping device; 7. support frame; 8. driving fan; 9. fixing rod; 10. round plate; 11. round block; 12. spray box; 13. fixing plate; 14. L-shaped plate; 15. semicircular plate; 16. scraper; 171. reciprocating screw rod; 172. threaded block; 173. connecting rod; 174. arc scraper; 175. short rod; 176. hollow ring; 177. stirring plate; 178. slide; 181. connecting plate; 182. L-shaped frame; 183. liquid storage tank; 184. discharge port; 185. elastic telescopic rod; 186. sealing baffle; 187. long rod; 188. sealing plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0032] See also Figure 1-Figure 4, one embodiment of the present invention is: a chemical tail gas purification absorption device, comprising: a treatment tank 1, an air inlet 2 is fixedly installed on the outer wall of the treatment tank 1, an air outlet 3 is fixedly installed on the top of the treatment tank 1, spray tanks 4 are arranged on both sides of the treatment tank 1, a spray pipe 5 is fixedly installed on the top of the spray tank 4, and a pumping device 6 is installed between the spray tank 4 and the treatment tank 1; a spray device, the spray device is arranged on the surface of the spray pipe 5, the spray device includes a support frame 7, a driving fan 8, a fixing rod 9, a circular plate 10, a circular block 11, a spray box 12, a fixing plate 13, an L-shaped plate 14, a semicircular plate 15 and a scraper 16, by misaligning the nozzle and the circular hole, the sprayed liquid will splash out when it impacts the L-shaped plate 14, and the splashed liquid will be more extensive, and the spraying effect is improved by making the liquid spray more widely, thereby improving the absorption Efficiency, the support frame 7 is fixedly mounted on the inner wall of the treatment tank 1, the driving fan 8 is fixedly mounted on the inner wall of the support frame 7, the fixing rod 9 is fixedly mounted on the output end of the driving fan 8, the circular plate 10 is fixedly mounted on the bottom of the fixing rod 9, the round block 11 is fixedly mounted on the top of the circular plate 10, the spray box 12 is fixedly mounted on the end of the spray pipe 5 away from the spray tank 4, a nozzle is arranged at the bottom of the spray box 12, the fixing plate 13 is fixedly mounted on the side of the spray box 12 close to the treatment tank 1, the L-shaped plate 14 is slidably mounted on the bottom of the fixing plate 13, the semicircular plate 15 is fixedly mounted on the end of the L-shaped plate 14 away from the fixing plate 13, the scraper 16 is fixedly mounted on the top of the L-shaped plate 14, and a circular hole is opened on the surface of the L-shaped plate 14 to prevent the pollutants in the exhaust gas from clogging the nozzle, resulting in ineffective spraying, and the exhaust gas cannot be effectively dissolved, causing environmental pollution.

[0033] A spring No. 1 is arranged between the L-shaped plate 14 and the fixed plate 13, and the spring No. 1 drives the L-shaped plate 14 to reset. A scraper 16 is arranged at the bottom of the nozzle, and the nozzle is scraped by the scraper 16 to prevent the nozzle from being blocked.

[0034] A method for using a chemical tail gas purification absorption device comprises the following steps:

[0035] Step 1: connect the air inlet 2 with the exhaust pipe to allow the exhaust gas to enter the treatment tank 1, spray the exhaust gas through the spray tank 4 and the spray pipe 5, increase the contact area between the gas and the liquid by spraying liquid, dissolve or react the harmful substances in the exhaust gas, and purify the gas under the action of the spray liquid;

[0036] Step 2: The purified gas is discharged by driving the fan 8 to rotate, the driving fan 8 rotates to drive the fixed rod 9 to rotate, the fixed rod 9 rotates to drive the circular plate 10 to rotate, the circular plate 10 rotates to drive the round block 11 to rotate, the round block 11 contacts the semicircular plate 15 during the rotation process, and the round block 11 pushes the semicircular plate 15 to move away from the circular plate 10;

[0037] Step 3: The semicircular plate 15 moves away from the circular plate 10, driving the L-shaped plate 14 to move away from the circular plate 10. The L-shaped plate 14 moves away from the circular plate 10, driving the circular hole to move. The sprayed liquid impacts the L-shaped plate 14 and splashes out through the misalignment of the nozzle and the circular hole. The splashed liquid is more extensive, and the spraying effect is improved by making the liquid spray more extensive, thereby improving the absorption efficiency.

[0038] Step 4: The L-shaped plate 14 moves away from the circular plate 10 to drive the scraper 16 to move away from the circular plate 10. The scraper 16 moves away from the circular plate 10 to scrape the bottom of the nozzle to prevent pollutants in the exhaust gas from clogging the nozzle, resulting in ineffective spraying, and the exhaust gas cannot be effectively dissolved, causing environmental pollution.

[0039] When this embodiment is working: the exhaust gas is allowed to enter the interior of the treatment tank 1 by connecting the air inlet 2 with the exhaust gas pipeline, and the exhaust gas entering is sprayed by the spray tank 4 and the spray pipe 5. The contact area between the gas and the liquid is increased by spraying liquid, so that harmful substances in the exhaust gas are dissolved or reacted. The gas is purified under the action of the spray liquid, and the purified gas is discharged by driving the fan 8 to rotate. Driving the fan 8 to rotate will drive the fixed rod 9 to rotate, and the fixed rod 9 to rotate will drive the circular plate 10 to rotate. The circular plate 10 will drive the round block 11 to rotate. The round block 11 will contact the semicircular plate 15 during its rotation. The round block 11 will push the semicircular plate 15 to move away from the circular plate 10. The semicircular plate 15 moves away from the circular plate 10. The movement of the plate 10 in the direction will drive the L-shaped plate 14 to move away from the circular plate 10. The movement of the L-shaped plate 14 in the direction away from the circular plate 10 will drive the circular hole to move. By misaligning the nozzle and the circular hole, the sprayed liquid will splash out when it hits the L-shaped plate 14. The splashed liquid will be more extensive. By spraying the liquid more widely, the spraying effect is improved and the absorption efficiency is improved. At the same time, the movement of the L-shaped plate 14 in the direction away from the circular plate 10 will drive the scraper 16 to move away from the circular plate 10. The movement of the scraper 16 in the direction away from the circular plate 10 will scrape the bottom of the nozzle to prevent the pollutants in the exhaust gas from clogging the nozzle, resulting in ineffective spraying, and the exhaust gas cannot be effectively dissolved, causing environmental pollution.

[0040] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a scraping device for scraping the inside of the processing tank 1 is provided at the bottom of the circular plate 10, and a feeding device is provided on the scraping device. The scraping device includes a reciprocating screw 171, a threaded block 172, a connecting rod 173 and an arc scraper 174. The reciprocating screw 171 is fixedly mounted on the bottom of the circular plate 10, the threaded block 172 is threadedly mounted on the circumferential surface of the reciprocating screw 171, the connecting rod 173 is fixedly mounted on the circumferential surface of the threaded block 172, the arc scraper 174 is fixedly mounted on one end of the connecting rod 173 away from the threaded block 172, and the arc scraper 174 is slidably mounted on the inner wall of the processing tank 1, and the liquid on the inner wall of the processing tank 1 is scraped by the up and down reciprocating motion of the arc scraper 174 to prevent the liquid from remaining on the inner wall of the processing tank 1, causing bacteria to grow inside the processing tank 1, and reducing the service life of the processing tank 1.

[0041] A short rod 175 is fixedly installed at the bottom of the connecting rod 173, and a hollow ring 176 is fixedly installed at the bottom of the short rod 175. A slide groove 178 is opened on the surface of the reciprocating screw rod 171, and a stirring plate 177 is slidably installed on the inner wall of the slide groove 178. The stirring plate 177 rotates during the downward movement, so that the solutions at different water levels at the bottom can be stirred, thereby improving the mixing effect of the solution and the exhaust gas.

[0042] The hollow ring 176 is arranged above the stirring plate 177, and a No. 2 spring is arranged between the stirring plate 177 and the slide groove 178, and the stirring plate 177 is driven to return to its original position by the No. 2 spring.

[0043] The feeding device includes a connecting plate 181, an L-shaped frame 182, a liquid storage tank 183, a discharge port 184, an elastic telescopic rod 185 and a sealing baffle 186. The connecting plate 181 is fixedly installed on the circumferential surface of the hollow ring 176, the L-shaped frame 182 is fixedly installed on the inner wall of the processing tank 1, the liquid storage tank 183 is fixedly installed on the bottom of the L-shaped frame 182, the discharge port 184 is connected and installed at the bottom of the liquid storage tank 183, the elastic telescopic rod 185 is fixedly installed at the bottom of the liquid storage tank 183, and the sealing baffle 186 is fixedly installed at the free end of the elastic telescopic rod 185, so that the absorbent inside the liquid storage tank 183 flows out, and the absorbent will mix with the solution to improve the absorption effect of the solution.

[0044] A long rod 187 is fixedly installed on the top of the sealing baffle 186, and a sealing plate 188 is arranged on the top of the long rod 187. Through intermittent quantitative input, excessive use of the absorbent can be effectively avoided, thereby reducing waste and lowering operating costs.

[0045] The connecting plate 181 is arranged above the sealing baffle 186. The connecting plate 181 moves downward to push the sealing baffle 186 to move downward to release the absorbent. The sealing baffle 186 contacts the surface of the discharge port 184, and contacts the discharge port 184 through the sealing baffle 186 to prevent the continuous inflow of absorbent and cause waste of resources.

[0046] When this embodiment is working: the rotation of the circular plate 10 drives the reciprocating screw rod 171 to rotate, and the rotation of the reciprocating screw rod 171 will drive the threaded block 172 to reciprocate up and down, and the up and down reciprocating movement of the threaded block 172 will drive the connecting rod 173 to reciprocate up and down, and the up and down reciprocating movement of the connecting rod 173 will drive the arc scraper 174 to reciprocate up and down, and the liquid on the inner wall of the treatment tank 1 is scraped off by the up and down reciprocating movement of the arc scraper 174 to prevent the liquid from remaining on the inner wall of the treatment tank 1, which will cause bacteria to grow inside the treatment tank 1 and reduce the service life of the treatment tank 1. At the same time, the downward movement of the connecting rod 173 will drive the short rod 175 to move downward, and the downward movement of the short rod 175 will drive the hollow ring 176 to move downward, and the downward movement of the hollow ring 176 will push the stirring plate 177 to slide downward along the direction of the slide groove 178. At the same time, the rotation of the reciprocating screw rod 171 will drive the stirring plate 177 to rotate. By rotating the stirring plate 177 during its downward movement, the solutions at different water levels at the bottom can be stirred, thereby improving the mixing effect of the solution and the exhaust gas.

[0047] The hollow ring 176 moves downward, driving the connecting plate 181 to move downward. The connecting plate 181 moves downward and contacts the sealing baffle 186. The connecting plate 181 pushes the sealing baffle 186 to move downward. The sealing baffle 186 moves downward and releases the contact with the discharge port 184, allowing the absorbent in the liquid storage tank 183 to flow out. The absorbent will mix with the solution to improve the absorption effect of the solution. At the same time, the sealing baffle 186 moves downward and drives the long rod 187 to move downward. The long rod 187 moves downward and drives the sealing plate 188 to move downward. The sealing plate 188 moves downward to seal the discharge port 184 to prevent the absorbent from continuously flowing into the solution. This leads to waste of resources. At the same time, when the reciprocating screw 171 drives the threaded block 172, the connecting rod 173, the short rod 175, the hollow ring 176 and the connecting plate 181 to move upward, the connecting plate 181 will be separated from the sealing baffle 186, and the sealing baffle 186 will be reset under the action of the elastic force of the elastic telescopic rod 185 itself. The resetting of the sealing baffle 186 will drive the long rod 187 to move upward. The upward movement of the long rod 187 will drive the sealing plate 188 to move upward. The upward movement of the sealing plate 188 will cause the absorbent to flow into the discharge port 184 again. Through intermittent quantitative input, excessive use of the absorbent can be effectively avoided, thereby reducing waste and reducing operating costs.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical tail gas purification and absorption device, characterized in that: include: A treatment tank (1), wherein an air inlet (2) is fixedly mounted on the outer wall of the treatment tank (1), an air outlet (3) is fixedly mounted on the top of the treatment tank (1), spray tanks (4) are arranged on both sides of the treatment tank (1), a spray pipe (5) is fixedly mounted on the top of the spray tank (4), and a pumping device (6) is installed between the spray tank (4) and the treatment tank (1); A spray device, the spray device is arranged on the surface of a spray pipe (5), the spray device comprises a support frame (7), a driving fan (8), a fixing rod (9), a circular plate (10), a round block (11), a spray box (12), a fixing plate (13), an L-shaped plate (14), a semicircular plate (15) and a scraper (16), the support frame (7) is fixedly mounted on the inner wall of a treatment tank (1), the driving fan (8) is fixedly mounted on the inner wall of the support frame (7), the fixing rod (9) is fixedly mounted on the output end of the driving fan (8), the circular plate (10) is fixedly mounted on the bottom of the fixing rod (9), and the The round block (11) is fixedly mounted on the top of the round plate (10); the spray box (12) is fixedly mounted on the end of the spray pipe (5) away from the spray tank (4); a spray head is arranged at the bottom of the spray box (12); the fixed plate (13) is fixedly mounted on a side of the spray box (12) close to the treatment tank (1); the L-shaped plate (14) is slidably mounted on the bottom of the fixed plate (13); the semicircular plate (15) is fixedly mounted on the end of the L-shaped plate (14) away from the fixed plate (13); the scraper (16) is fixedly mounted on the top of the L-shaped plate (14); and a circular hole is opened on the surface of the L-shaped plate (14); Wherein, a scraping device for scraping the inside of the processing tank (1) is arranged at the bottom of the circular plate (10), and a feeding device is arranged on the scraping device.

2. A chemical tail gas purification and absorption device according to claim 1, characterized in that: A No. 1 spring is arranged between the L-shaped plate (14) and the fixed plate (13), and the scraper (16) is arranged at the bottom of the nozzle.

3. A chemical tail gas purification absorption device according to claim 2, characterized in that: The scraping device comprises a reciprocating screw rod (171), a threaded block (172), a connecting rod (173) and an arc-shaped scraper (174); the reciprocating screw rod (171) is fixedly mounted on the bottom of the circular plate (10); the threaded block (172) is threadedly mounted on the circumferential surface of the reciprocating screw rod (171); the connecting rod (173) is fixedly mounted on the circumferential surface of the threaded block (172); the arc-shaped scraper (174) is fixedly mounted on one end of the connecting rod (173) away from the threaded block (172); and the arc-shaped scraper (174) is slidably mounted on the inner wall of the processing tank (1).

4. A chemical tail gas purification absorption device according to claim 3, characterized in that: A short rod (175) is fixedly installed at the bottom of the connecting rod (173), and a hollow ring (176) is fixedly installed at the bottom of the short rod (175). A sliding groove (178) is opened on the surface of the reciprocating screw rod (171), and a stirring plate (177) is slidably installed on the inner wall of the sliding groove (178).

5. A chemical tail gas purification and absorption device according to claim 4, characterized in that: The hollow ring (176) is arranged above the stirring plate (177), and a No. 2 spring is arranged between the stirring plate (177) and the slide groove (178).

6. A chemical tail gas purification and absorption device according to claim 5, characterized in that: The feeding device comprises a connecting plate (181), an L-shaped frame (182), a liquid storage tank (183), a discharge port (184), an elastic telescopic rod (185) and a sealing baffle (186); the connecting plate (181) is fixedly mounted on the circumferential surface of the hollow ring (176); the L-shaped frame (182) is fixedly mounted on the inner wall of the processing tank (1); the liquid storage tank (183) is fixedly mounted on the bottom of the L-shaped frame (182); the discharge port (184) is connected and mounted on the bottom of the liquid storage tank (183); the elastic telescopic rod (185) is fixedly mounted on the bottom of the liquid storage tank (183); and the sealing baffle (186) is fixedly mounted on the free end of the elastic telescopic rod (185).

7. A chemical tail gas purification and absorption device according to claim 6, characterized in that: A long rod (187) is fixedly mounted on the top of the sealing baffle (186), and a sealing plate (188) is arranged on the top of the long rod (187).

8. A chemical tail gas purification and absorption device according to claim 7, characterized in that: The connecting plate (181) is arranged above the sealing baffle (186), and the sealing baffle (186) is in contact with the surface of the discharge port (184).

9. A method for using a chemical tail gas purification absorption device, using the chemical tail gas purification absorption device according to claim 8, characterized in that: The following steps are involved: Step 1: The exhaust gas is allowed to enter the treatment tank (1) by connecting the air inlet (2) to the exhaust gas pipeline, and the exhaust gas is sprayed by the spray tank (4) and the spray pipe (5). The contact area between the gas and the liquid is increased by spraying liquid, so that harmful substances in the exhaust gas are dissolved or reacted, and the gas is purified under the action of the spray liquid; Step 2: The purified gas is discharged by driving the fan (8) to rotate, the driving fan (8) drives the fixed rod (9) to rotate, the fixed rod (9) drives the circular plate (10) to rotate, the circular plate (10) drives the round block (11) to rotate, the round block (11) contacts the semicircular plate (15) during the rotation process, and the round block (11) pushes the semicircular plate (15) to move in a direction away from the circular plate (10); Step 3: The semicircular plate (15) moves in a direction away from the circular plate (10) to drive the L-shaped plate (14) to move in a direction away from the circular plate (10), and the L-shaped plate (14) moves in a direction away from the circular plate (10) to drive the circular hole to move, and the sprayed liquid impacts the L-shaped plate (14) and splashes out through the misalignment of the nozzle and the circular hole, and the splashed liquid is more widely spread, thereby improving the spraying effect and the absorption efficiency by making the liquid spray more widely spread; Step 4: The L-shaped plate (14) moves in a direction away from the circular plate (10) to drive the scraper (16) to move in a direction away from the circular plate (10). The scraper (16) moves in a direction away from the circular plate (10) to scrape the bottom of the nozzle to prevent pollutants in the exhaust gas from clogging the nozzle, resulting in ineffective spraying, ineffective dissolution of the exhaust gas, and causing environmental pollution.

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