A tail gas desulfurization and purification device

Abstract

The present invention relates to the technical field of exhaust gas desulfurization, and in particular to an exhaust gas desulfurization purification treatment device, comprising an exhaust gas emission pipe, a curved portion is provided in the middle of the exhaust gas emission pipe, a purification plate is filled in the exhaust gas emission pipe, the purification plate is arranged from the bottom end of the exhaust gas emission pipe along the tube cavity of the exhaust gas emission pipe to the curved portion, a vertically upward purification pipe is installed on the curved portion, a spray seat is provided at the top of the purification pipe, the bottom end of the purification pipe is communicated with the tube cavity of the curved portion, a plurality of vertically downward spray pipes are installed on the spray seat, the bottom end of the spray pipe is sprayed on the purification plate, a lifting pipe is installed on the spray seat, the purification effect is improved, the impurities on the surface of all purification plates are cleaned again, the cleaning work of the purification plate does not require manual work, and there is no need to disassemble the pipeline, which is easy to operate.

Description

Technical Field

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

[0002] Industrial waste gas contains a large amount of sulfur components, which are highly polluting. After being discharged with the waste gas, it will cause serious harm to the air quality. Therefore, in order to make the waste gas meet the emission standards, it is necessary to install a desulfurization purification device near the tail exhaust pipe of the industrial equipment. The desulfurization purification device is generally composed of a desulfurization tower, a spray system, and a liquid tank filled with lime water.

[0003] Although this type of desulfurization purification device can purify the elements in industrial waste gas, its purification time is relatively long, and the waste gas particles in the waste gas pipe are not easy to clean. The waste gas pipe needs to be cleaned regularly, and the normal desulfurization operation is affected when the device is shut down for manual cleaning. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a tail gas desulfurization purification treatment device.

[0005] A tail gas desulfurization purification treatment device comprises a tail gas emission pipe, a bent portion is provided in the middle portion of the tail gas emission pipe, a purification plate is filled in the tail gas emission pipe, the purification plate is arranged from the bottom end of the tail gas emission pipe along the tube cavity of the tail gas emission pipe to the bent portion, a vertically upward purification pipe is installed on the bent portion, a spray seat is provided at the top of the purification pipe, the bottom end of the purification pipe is communicated with the tube cavity of the bent portion, a plurality of vertically downward spray pipes are installed on the spray seat, the bottom end of the spray pipe is sprayed at the purification plate, a lifting pipe is installed on the spray seat, a liquid tank is provided at the bottom of the tail gas emission pipe, the liquid tank is filled with lime water, a sealing plate is welded to the bottom end of the tail gas emission pipe, an air injection pipe is connected to the sealing plate, the bottom end of the air injection pipe is inserted into the liquid tank and fixed on the liquid The bottom end of the lifting pipe is inserted into the liquid tank, and a lifting pump is installed on the lifting pipe. The lifting pump provides lime water to the spray seat through the lifting pipe, and the lime water is sprayed into the exhaust pipe through the spray pipe, which is not only used to reduce the sulfide dust in the exhaust gas, but also to wash down the sulfide residue on the purification plate. A through hole is opened in the middle of the purification plate, and a cleaning mechanism is provided in the purification plate and the liquid tank. The cleaning mechanism includes a spring laid on each piece of the purification plate, and also includes a steel wire passing through the through hole. The steel wire is connected to each of the springs. The bottom end of the steel wire enters the liquid tank and is provided with a floating seat. The floating seat is close to the bottom end of the gas injection pipe, and the floating seat floats in the lime water. An exhaust pipe is installed on the gas injection pipe, and the exhaust pipe is located on the bottom side of the sealing plate.

[0006] As a further preference, a flange is installed on the air inlet at the top left end of the tail gas emission pipe.

[0007] As a further preference, a connecting rod is welded to the tube wall of the gas injection pipe, and the connecting rod is connected to the bulkhead of the liquid tank.

[0008] As a further preference, the gas injection pipe is provided with a bending portion, and the bending portion is located at the bottom side of the sealing plate.

[0009] As further preferred, a plurality of the purification plates are equidistantly distributed along the tube cavity of the curved portion, gaps are left between the plurality of the purification plates, and a plurality of the purification plates are inclined toward an air intake direction of the exhaust pipe.

[0010] As a further preference, a spring is provided on the upper surface of each purification plate, the purification plate is a circular plate, the spring is spirally shaped, the spring is spirally coiled and laid on the circular surface of the purification plate, one free end of the spring is connected to the top surface of the purification plate, the other free end of the spring is connected to the steel wire through a thin wire, and the bottom end of the steel wire passes through the bottom end of the gas injection pipe and is connected to the floating seat.

[0011] As a further preferred embodiment, an inner cabin is installed in the liquid tank, the top end of the inner cabin is open and the bottom end is closed, the interior of the inner cabin is filled with a vertically upward partition, the partition divides the inner cabin into a left cabin and a right cabin, the volume of the left cabin is smaller than the volume of the right cabin, the left and right sides of the right cabin are meshed, the floating seat is located in the left cabin, an overflow hole is opened on the partition, the overflow hole is close to the top and located above the floating seat, the cleaning mechanism also includes a hinged seat arranged on the top of the floating seat, the bottom end of the steel wire is hinged on the hinged seat, the cleaning mechanism also includes a rotating shaft arranged on the front and rear ends of the floating seat, the front rotating shaft is transferred to the rear side of the cavity wall of the left cabin, and the rear rotating shaft is transferred to the front side of the cavity wall of the left cabin, and the lime water in the left cabin is close to the overflow hole on the partition.

[0012] As a further preferred embodiment, a slope is provided on the right side of the floating seat, a rotation space is left between the slope and the partition, and the slope passes through the rotation space and is inclined at the partition.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The waste gas produced by industrial equipment enters the tail gas discharge pipe, and then is discharged into the liquid tank through the gas injection pipe. The liquid tank is filled with lime water, and the lime water directly treats the sulfur component in the waste gas according to the principle of hookah purification to reduce pollution. Of course, the present invention is not only embodied in the primary purification mode, but also the lime water in the liquid tank is lifted into the spray seat through the lifting pipe, and then sprayed into the tail gas discharge pipe through the spray pipe after being collected by the spray seat, so that the waste gas is diluted and dust-reduced in advance. The industrial waste gas then passes through multiple purification plates to complete the step-by-step purification of sulfides, and then is discharged into the liquid tank through the gas injection pipe. When the waste gas is discharged outward through the exhaust pipe, the purification quality is improved.

[0015] 2. The clean liquid tank is divided into left and right chambers by a partition. When the purified industrial waste gas is discharged into the liquid tank through the gas injection pipe, bubbles will be generated in the lime water in the right chamber at the bottom of the gas injection pipe. The bubbles will rise to the water surface and explode, and the water splashes generated by the explosion will enter the left chamber through the overflow hole and fall on the right side of the top surface of the floating seat, causing the right side of the top surface of the floating seat to lose weight and move downward. When more lime water flows to the right side of the top surface of the floating seat, it will also cause the floating seat to deflect to the lower right around the rotating shaft, automatically unloading the limestone. When the floating seat moves downward, it will drag each spring downward through the steel wire. Since these springs are distributed on each purification plate , and these springs are spiral-shaped, so when these springs are subjected to the tension of the steel wire, they will perform radial contraction along the surface of the purification plate. Because there are gaps between the pitches of the springs, when these springs perform radial contraction along the surface of the purification plate, it is equivalent to cleaning down the impurities attached to the surface of the purification plate. The cleaned impurities will enter the through holes along the inclined surface of the purification plate, and then be discharged into the air injection pipe from the through holes, and then be discharged into the right cabin from the air injection pipe, so that the impurities on the surface of all purification plates are cleaned again. The cleaning work of the purification plate does not require manual work, and there is no need to disassemble the pipeline, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a tail gas desulfurization purification treatment device provided in an embodiment of the present invention;

[0017] Figure 2 A tail gas desulfurization purification treatment device provided in the embodiment of the present invention comprises Figure 1 The schematic diagram from the back perspective is shown;

[0018] Figure 3 A tail gas desulfurization purification treatment device provided in the embodiment of the present invention comprises Figure 1 The schematic diagram from the upward perspective is introduced;

[0019] Figure 4 A schematic diagram of a cutaway front view of a tail gas desulfurization purification treatment device provided in an embodiment of the present invention;

[0020] Figure 5 A tail gas desulfurization purification treatment device provided in the embodiment of the present invention comprises Figure 4 The enlarged schematic diagram of the A part is shown;

[0021] Figure 6 A schematic diagram of the partial structure of a tail gas desulfurization purification treatment device after being cut apart provided in an embodiment of the present invention.

[0022] In the figure: 1. exhaust pipe; 2. bending part; 3. purification plate; 4. purification pipe; 5. spray seat; 6. spray pipe; 7. lifting pipe; 8. liquid tank; 9. sealing plate; 10. gas injection pipe; 11. through hole; 12. cleaning mechanism; 13. spring; 14. steel wire; 15. floating seat; 16. flange; 17. connecting rod; 18. bending part; 19. gap; 20. exhaust pipe; 21. inner cabin; 22. partition; 23. left cabin; 24. right cabin; 25. overflow hole; 26. hinge seat; 27. rotating shaft; 28. inclined plane; 29. ​​rotating space. DETAILED DESCRIPTION

[0023] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0024] In one embodiment, Figure 1-Figure 6As shown: This embodiment provides a tail gas desulfurization purification treatment device, including a tail gas emission pipe 1, a bent portion 2 is provided in the middle of the tail gas emission pipe 1, and a purification plate 3 is filled in the tail gas emission pipe 1. The purification plate 3 is an activated carbon purification plate, and its purification principle is the existing technology, which will not be repeated in the present invention. The purification plate 3 is arranged from the bottom end of the exhaust pipe 1 along the tube cavity of the exhaust pipe 1 to the curved part 2, and a vertically upward purification pipe 4 is installed on the curved part 2. A spray seat 5 is provided at the top of the purification pipe 4. The bottom end of the purification pipe 4 is communicated with the tube cavity of the curved part 2. A plurality of vertically downward spray pipes 6 are installed on the spray seat 5. The bottom end of the spray pipe 6 sprays the purification plate 3. A lifting pipe 7 is installed on the spray seat 5. A liquid tank 8 is provided at the bottom of the exhaust pipe 1. The liquid tank 8 is filled with lime water. A sealing plate 9 is welded at the bottom end of the exhaust pipe 1. An air injection pipe 10 is connected to the sealing plate 9. The bottom end of the air injection pipe 10 is inserted into the liquid tank 8 and fixed on the liquid tank 8. The bottom end of the lifting pipe 7 is inserted into the liquid tank 8. A lifting pump is installed on the lifting pipe 7. Lime water is provided to the spray seat 5 through the lifting pipe 7 by a lifting pump, and the lime water is then sprayed into the exhaust pipe 1 through the spray pipe 6, which is not only used to reduce the dust of sulfides in the exhaust gas, but also to wash down the sulfide residues on the purification plate 3. A through hole 11 is opened in the middle of the purification plate 3, and a cleaning mechanism 12 is provided in the purification plate 3 and the liquid tank 8. The cleaning mechanism 12 includes a spring 13 laid on each purification plate 3, and also includes a steel wire 14 passing through the through hole 11. The steel wire 14 is connected to each spring 13. The bottom end of the steel wire 14 enters the liquid tank 8 and is provided with a floating seat 15. The floating seat 15 is close to the bottom end of the gas injection pipe 10, and the floating seat 15 floats in the lime water. An exhaust pipe 20 is installed on the gas injection pipe 10, and the exhaust pipe 20 is located on the bottom side of the sealing plate 9.

[0025] like Figure 6 As shown, a spring 13 is provided on the upper surface of each purification plate 3. The purification plate 3 is a circular plate. The spring 13 is in a spiral shape. The spring 13 is spirally coiled and laid on the circular surface of the purification plate 3. One free end of the spring 13 is connected to the top surface of the purification plate 3. The other free end of the spring 13 is connected to the steel wire 14 through a thin wire. The bottom end of the steel wire 14 passes through the bottom end of the gas injection pipe 10 and is connected to the floating seat 15. The spring 13 is arranged on the surface of the purification plate 3, which is equivalent to forming a cleaning structure on the surface of the purification plate 3. Once the spring 13 is dragged by the steel wire 14, it will shrink in the radial direction. Once the spring 13 shrinks radially along the surface of the purification plate 3, the surface of the purification plate 3 will be scraped, so that the impurities intercepted on the surface during purification fall into the through hole 11, and then fall into the gas injection pipe 10 from the through hole 11, and then fall into the liquid tank 8 from the gas injection pipe 10.

[0026] like Figures 1 to 4 as well as Figure 6As shown, an inner cabin 21 is installed in the liquid tank 8, the top end of the inner cabin 21 is open and the bottom end is closed, the interior of the inner cabin 21 is filled with a vertical upward partition 22, the partition 22 divides the inner cabin 21 into a left cabin 23 and a right cabin 24, the volume of the left cabin 23 is smaller than the volume of the right cabin 24, the left and right sides of the right cabin 24 are meshed, the floating seat 15 is located in the left cabin 23, an overflow hole 25 is opened on the partition 22, the overflow hole 25 is close to the top and located above the floating seat 15, a hinge seat 26 is provided on the top of the floating seat 15, the bottom end of the steel wire 14 is hinged on the hinge seat 26, and a rotating shaft 27 is provided at the front and rear ends of the floating seat 15, the front rotating shaft 27 is transferred to the rear side of the cavity wall of the left cabin 23, and the rear rotating shaft 27 is transferred to the front side of the cavity wall of the left cabin 23, and the lime water in the left cabin 23 is close to the overflow hole 25 on the partition 22. The steel wire 14 mentioned here can be understood as a steel bar with a certain supporting force.

[0027] like Figure 4 As shown, a slope 28 is provided on the right side of the floating seat 15, and a rotation space 29 is reserved between the slope 28 and the partition 22, and the slope 28 passes through the rotation space 29 and is inclined at the partition 22. When the lime water falls to the right side of the top surface of the floating seat 15, the floating seat 15 first descends, and then deflects to the lower right as the amount of water increases. When the floating seat 15 descends, it drags the steel wire 14 downward, and the steel wire 14 drags the spring 13, so that the spring 13 completes the radial automatic contraction action along the surface of the purification plate 3. At this time, the excess lime water falls into the left cabin 23 through the rotation space 29 to unload, and the floating seat 15 automatically rises and rotates to correct.

[0028] Working principle and effect: Before use, the exhaust pipe 1 and all the components on the exhaust pipe 1 are connected to the industrial equipment through the flange 16. The exhaust gas produced by the industrial equipment enters the exhaust pipe 1, and then is discharged into the liquid tank 8 through the gas injection pipe 10. The liquid tank 8 is filled with lime water. The lime water directly treats the sulfur component in the exhaust gas according to the principle of hookah purification to reduce pollution. Of course, the present invention is not only embodied in the primary purification mode, but also in the following technical effects: start the lifting pump (omitted in the prior art figure), lift the lime water in the liquid tank 8 to the spray seat 5 through the lifting pipe 7, collect it in the spray seat 5, and then spray it into the exhaust pipe 1 through the spray pipe 6, so that the exhaust gas is diluted and dust-reduced in advance. The industrial exhaust gas then passes through multiple purification plates 3 to complete the step-by-step purification of sulfides, and then is discharged into the liquid tank 8 through the gas injection pipe 10. When the exhaust gas is discharged outward through the exhaust pipe 20, the purification quality is improved.

[0029] In addition, the multiple purification plates 3 serve as the waste gas interception and purification treatment structure in the exhaust pipe 1. In addition to ensuring that the industrial waste gas is purified in advance, the pollutants and impurities in the industrial waste gas are intercepted on the purification plates 3, so that the discharge speed of the industrial waste gas through the exhaust pipe 1 to the liquid tank 8 is delayed to a certain extent. In this way, the contact time between the industrial waste gas and the lime water sprayed from the spray pipe 6 is prolonged, so that the industrial waste gas can be better purified in advance before entering the liquid tank 8, and the impurities and other harmful substances in the industrial waste gas will also be intercepted on the purification plates 3. The present invention also embodies that the harmful substances intercepted on the purification plates 3 can be automatically cleaned without disassembling the pipeline, such as Figure 4 As shown in the figure, when the purified industrial waste gas is discharged into the liquid tank 8 through the gas injection pipe 10, the bottom end of the gas injection pipe 10 will generate bubbles in the lime water in the right cabin 24. When the bubbles reach the water surface and explode, the splashes generated are higher than the overflow hole 25 and enter the left cabin 23 through the overflow hole 25. Since the overflow hole 25 is located above the floating seat 15, and the floating seat 15 is connected to the bottom end of the steel wire 14 through the connection relationship between the hinge seat 26 and the rotating shaft 27, and the steel wire 14 has a certain supporting force, when the lime water flows into the left cabin 23 through the overflow hole 25, it will first fall on the right side of the top surface of the floating seat 15. The right side of the top surface of the floating seat 15 is concave, and the lime water that can be received can be temporarily stored for a short time. Therefore, when the lime water falls on the right side of the top surface of the floating seat 15, the floating seat 15 will lose weight and move downward first. When it flows to the top of the floating seat 15 When there is more lime water on the right side of the surface, it will also cause the floating seat 15 to deflect to the lower right around the rotating shaft 27, automatically unloading the limestone. When the floating seat 15 moves downward, it will drag the steel wire 14 downward, and then the steel wire 14 will drag each spring 13 downward at the same time. Since these springs 13 are distributed on each purification plate 3, and these springs 13 are spiral, when these springs 13 are pulled by the steel wire 14, they will perform radial contraction along the surface of the purification plate 3. Since there are gaps between the pitches of the springs 13, when these springs 13 perform radial contraction along the surface of the purification plate 3, it is equivalent to cleaning down the impurities attached to the surface of the purification plate 3. The cleaned impurities will enter the through hole 11 along the inclined surface of the purification plate 3, and then be discharged into the gas injection pipe 10 through the through hole 11, and then be discharged into the right cabin 24 through the gas injection pipe 10. Since the generation of bubbles is intermittent, the lime water entering the left chamber 23 and flowing onto the floating seat 15 is also intermittent. Therefore, the floating seat 15 will automatically rotate back to the normal position after completing the above-mentioned weightlessness operation. When the lime water flows onto the floating seat 15 next time, the floating seat 15 will repeat the above-mentioned weightlessness and dragging action, and the steel wire 14 will once again repeat the dragging action on all the springs 13, so that these springs 13 will once again perform radial contraction along the surface of the purification plate 3, so that all impurities on the surface of the purification plate 3 will be cleaned up again. The cleaning work of the purification plate 3 does not require manual work, and does not require disassembling the pipeline, which is easy to operate.

[0030] In summary, during purification, the industrial waste gas is treated by spraying dust reduction and purification plate 3 in the tail gas emission pipe 1, and then enters the liquid tank 8 for secondary purification. While not affecting the external occupied space, the purification quality is also improved. The bubbles generated by the hookah purification method are also used to make the lime water fall on the floating seat 15, which serves as the power for the floating seat 15 to descend, driving each spring 13 to contract radially, and automatically cleaning each purification plate 3 is completed, and no external force equipment is required during cleaning.

[0031] It needs to be further explained that: since the spring 13 has a pitch gap, even if the spring 13 is set on the purification plate 3, when the industrial waste gas blows toward the purification plate 3, the industrial waste gas will pass through the spring 13 through the pitch gap and be purified by the purification plate 3. The existence of the spring 13 will not affect the original purification effect of the purification plate 3.

[0032] It is necessary to further explain that: the rotating shaft 27 is provided with a torsion spring, one free end of which is connected to the floating seat 15, and the other free end is connected to the steel wire 14. When the floating seat 15 deflects downward, the torsion spring is wound to store force. After the lime water on the floating seat 15 is unloaded, the torsion spring automatically recovers and automatically returns the floating seat 15 to the normal position. In the field of machinery, a torsion spring is often used as an automatic rotation structure of a rotating part. This control method is a prior art, and the present invention will not be repeated here.

[0033] like Figure 1 , Figure 2 as well as Figure 4 As shown, a flange 16 is installed on the air inlet at the top left end of the exhaust pipe 1. Figure 2 As shown, a connecting rod 17 is welded to the pipe wall of the gas injection pipe 10, and the other end of the connecting rod 17 is connected to the bulkhead of the liquid tank 8, so that the entire exhaust gas emission pipe 1 is connected to the liquid tank 8. If the exhaust port of the industrial equipment is higher, the exhaust gas emission pipe 1 is connected to the exhaust port of the industrial equipment through the flange 16, and the liquid tank 8 is also installed together. The liquid tank 8 does not need to be connected to the ground, and it is more flexible to use.

[0034] like Figure 4 As shown, several purification plates 3 are equidistantly distributed along the lumen of the curved portion 2, and gaps 19 are left between the several purification plates 3, and several purification plates 3 are inclined toward the air intake direction of the exhaust pipe 1. After being purified by a purification plate 3, the industrial waste gas enters the gap 19, and then is purified by the next purification plate 3, and so on, so that the impurities in the waste gas are intercepted step by step and the sulfides are purified step by step. In addition, while the industrial waste gas is being purified as mentioned above, the curved portion 2 is used to retain the waste gas in the purified environment for a slightly longer time, so that the spray purification effect is maximized, thereby further improving the purification effect of the industrial waste gas.

[0035] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0036] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tail gas desulfurization purification treatment device, characterized in that: The invention comprises an exhaust gas emission pipe (1), wherein a bend (2) is provided in the middle of the exhaust gas emission pipe (1), a purification plate (3) is filled in the exhaust gas emission pipe (1), and the purification plate (3) is arranged from the bottom end of the exhaust gas emission pipe (1) along the tube cavity of the exhaust gas emission pipe (1) to the bend (2), and a purification pipe (4) vertically upward is installed on the bend (2), and a spray seat (5) is provided at the top end of the purification pipe (4), and the bottom end of the purification pipe (4) is communicated with the tube cavity of the bend (2), and a spray seat (5) is installed on the spray seat (5). A plurality of spray pipes (6) extending vertically downward, the bottom end of each spray pipe (6) sprays the purification plate (3), a lifting pipe (7) is installed on the spray seat (5), a liquid tank (8) is provided at the bottom of the exhaust gas discharge pipe (1), the liquid tank (8) is filled with lime water, a sealing plate (9) is welded at the bottom end of the exhaust gas discharge pipe (1), an air injection pipe (10) is connected to the sealing plate (9), the bottom end of the air injection pipe (10) is inserted into the liquid tank (8) and fixed on the liquid tank (8), and the lifting pipe (7) is provided at the bottom end of the exhaust gas discharge pipe (1). The bottom end is inserted into the liquid tank (8), and a lifting pump is installed on the lifting pipe (7). The lifting pump provides lime water to the spray seat (5) through the lifting pipe (7), and the lime water is sprayed into the tail gas discharge pipe (1) through the spray pipe (6), which is used not only to reduce the sulfide in the exhaust gas, but also to wash the sulfide residue on the purification plate (3) downward. A through hole (11) is opened in the middle of the purification plate (3), and a cleaning mechanism (12) is provided in the purification plate (3) and the liquid tank (8). The cleaning mechanism (12) ) includes a spring (13) laid on each of the purification plates (3), and also includes a steel wire (14) passing through the through hole (11), the steel wire (14) is connected to each of the springs (13), the bottom end of the steel wire (14) enters the liquid tank (8) and is provided with a floating seat (15), the floating seat (15) is close to the bottom end of the gas injection pipe (10), the floating seat (15) floats in the lime water, the gas injection pipe (10) is installed with an exhaust pipe (20), and the exhaust pipe (20) is located on the bottom side of the sealing plate (9).

2. The tail gas desulfurization purification treatment device according to claim 1, characterized in that: A flange (16) is installed on the air inlet at the top left end of the tail gas exhaust pipe (1).

3. The tail gas desulfurization purification treatment device according to claim 2, characterized in that: A connecting rod (17) is welded to the wall of the gas injection pipe (10), and the connecting rod (17) is connected to the wall of the liquid tank (8).

4. The tail gas desulfurization purification treatment device according to claim 3, characterized in that: The gas injection pipe (10) is provided with a bending portion (18), and the bending portion (18) is located on the bottom side of the sealing plate (9).

5. The tail gas desulfurization purification treatment device according to claim 4, characterized in that: The plurality of purification plates (3) are equidistantly distributed along the tube cavity of the curved portion (2), gaps (19) are left between the plurality of purification plates (3), and the plurality of purification plates (3) are inclined toward the air intake direction of the exhaust gas exhaust pipe (1).

6. The tail gas desulfurization purification treatment device according to claim 5, characterized in that: A spring (13) is provided on the upper surface of each purification plate (3); the purification plate (3) is a circular plate; the spring (13) is spirally shaped; the spring (13) is spirally coiled and laid on the circular surface of the purification plate (3); one free end of the spring (13) is connected to the top surface of the purification plate (3); the other free end of the spring (13) is connected to the steel wire (14) through a thin wire; the bottom end of the steel wire (14) passes through the bottom end of the gas injection pipe (10) and is connected to the floating seat (15).

7. The tail gas desulfurization purification treatment device according to claim 6, characterized in that: An inner cabin (21) is installed in the liquid tank (8), the top end of the inner cabin (21) is open and the bottom end is closed, the interior of the inner cabin (21) is filled with a vertical upward partition (22), the partition (22) divides the inner cabin (21) into a left cabin (23) and a right cabin (24), the volume of the left cabin (23) is smaller than the volume of the right cabin (24), the left and right sides of the right cabin (24) are mesh-shaped, the floating seat (15) is located in the left cabin (23), the upper part of the partition (22) is provided with an overflow hole (25), and the inner cabin (21) is filled with a vertical upward partition (22), and the inner cabin (21) is filled with a vertical upward partition (22). The overflow hole (25) is located on the top and above the floating seat (15). A hinge seat (26) is provided on the top of the floating seat (15). The bottom end of the steel wire (14) is hinged on the hinge seat (26). A rotating shaft (27) is provided at the front and rear ends of the floating seat (15). The rotating shaft (27) on the front side is connected to the rear side of the cavity wall of the left cabin (23), and the rotating shaft (27) on the rear side is connected to the front side of the cavity wall of the left cabin (23). The lime water in the left cabin (23) is close to the overflow hole (25) on the partition (22).

8. The tail gas desulfurization purification treatment device according to claim 7, characterized in that: The right side of the floating seat (15) is provided with an inclined surface (28), a rotation space (29) is reserved between the inclined surface (28) and the partition (22), and the inclined surface (28) passes through the rotation space (29) and is inclined toward the partition (22).

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