A waste gas spray tower for waste gas treatment

Abstract

The present application relates to an exhaust gas spray tower for exhaust gas treatment, and belongs to the technical field of spray towers. It includes a tower body, wherein an air inlet pipe is connected through the lower part of the tower body, a spray assembly is arranged on the upper part of the tower body, a mixing flow assembly is arranged between the spray assembly and the air inlet pipe, a liquid discharge assembly is arranged at the bottom of the tower body, and an exhaust pipe is arranged at the top of the tower body. A liquid pipe connected through the spray assembly is arranged on the outside of the tower body. The mixing flow assembly includes a first liquid driving device and a mixing flow device, and the first liquid driving device is connected in series with the liquid pipe. The mixing flow device includes a rotating rod rotatably connected to the tower body, and a plurality of side plates arranged perpendicularly thereto are arranged at intervals on the outer side of the rotating rod, and a rotating plate is rotatably connected between two adjacent side plates. The first liquid driving device drives the rotating rod to rotate. The present application distributes gas by rotating the mixing flow assembly, and no blockage will occur, and no regular maintenance is required, thereby reducing labor intensity.

Description

Technical Field

[0001] The present application belongs to the technical field of spray towers, and specifically relates to an exhaust gas spray tower for exhaust gas treatment. Background Art

[0002] The spray tower is a commonly used industrial waste gas treatment equipment. It absorbs or neutralizes harmful components in the waste gas by spraying liquid to contact the waste gas, so that the exhaust gas meets environmental standards. For waste gas containing particulate matter, the spray tower can collide with the particulate matter through water droplets or other liquid droplets, causing them to condense and become larger, making it easier to capture and separate, thereby achieving the effect of dust removal.

[0003] The contact between the exhaust gas and the spray liquid inside the spray tower directly affects the treatment effect of the exhaust gas. For example, a waste gas treatment device and method with the authorization announcement number CN118320599B includes a spray tower and a packing layer. The inner cavity of the spray tower is provided with a feed pipe, and a feed port is opened in the circumference of the feed pipe. The packing layer includes a fan-shaped packing frame with the same central angle. The bottom of the packing frame is provided with a mesh door body, and the top is provided with a sliding rod. A flexible mesh layer is connected between the side frame 1 and the sliding rod. The exhaust gas treatment device is provided with a driving component 1 for driving the mesh door body to open and close, and a driving component 2 for driving the sliding rod to slide along the inner arc frame and the outer arc frame. The packing layer in this patent plays the role of distributing air, so that the exhaust gas is evenly distributed inside the spray tower, and the contact effect with the spray liquid is optimized. However, the packing layer will be blocked after a period of use, and the internal packing balls must be replaced regularly, which increases the cost of later maintenance. Summary of the invention

[0004] The technical problem to be solved by the present application is: to overcome the deficiencies of the prior art and to provide an exhaust gas spray tower for exhaust gas treatment. The present application distributes gas through a rotating mixed flow assembly, which will not cause blockage and does not require regular maintenance, thereby reducing labor intensity.

[0005] The technical solution adopted by this application to solve the problems existing in the prior art is:

[0006] A waste gas spray tower for waste gas treatment comprises a tower body, wherein an air inlet pipe is connected through the lower part of the tower body, a spray assembly is arranged above the upper part of the tower body, a mixing flow assembly is arranged between the spray assembly and the air inlet pipe, a drainage assembly is arranged at the bottom of the tower body, and an exhaust pipe is arranged at the top of the tower body.

[0007] The outside of the tower body is provided with a liquid pipe which is connected with the spray assembly.

[0008] The flow mixing assembly comprises a first liquid driving device and a flow mixing device, and the first liquid driving device is connected in series with the liquid pipe.

[0009] The mixing flow device comprises a rotating rod rotatably connected to the tower body, a plurality of side plates arranged perpendicular to the rotating rod are arranged at intervals on the outer side of the rotating rod, and a rotating plate is rotatably connected between two adjacent side plates.

[0010] The first liquid driving device drives the rotating rod to rotate.

[0011] Preferably, the first liquid driving device comprises a shell and a front end cover which are interlocked with each other, an impeller is rotatably arranged inside the shell, and a central axis of the impeller is connected to a rotating rod.

[0012] A liquid inlet and a liquid outlet are respectively provided at the upper and lower ends of the shell, and the liquid inlet and the liquid outlet are connected in series with the liquid pipe.

[0013] Preferably, the tower body comprises a cylinder with upper and lower ends being open, and the upper and lower ends of the cylinder are respectively covered with an upper end cover and a lower end cover.

[0014] Preferably, the outer part of the cylinder is provided with an auxiliary heat dissipation sleeve.

[0015] Preferably, the drainage assembly includes a drainage pipe, a liquid level control cylinder and a floating plate. One end of the drainage pipe is passed through the outside of the tower body, and the other end is connected to the liquid level control cylinder. The floating plate is slidable up and down inside the liquid level control cylinder, and the outer diameter of the floating plate is the same as the inner diameter of the liquid level control cylinder.

[0016] A limit plate is connected above the floating plate through a vertically arranged guide rod, and the outer diameter of the limit plate is greater than the inner diameter of the liquid level control cylinder.

[0017] When the float plate is at the bottom dead center, it is lower than the discharge pipe.

[0018] Preferably, an annular air distribution pipe is provided inside the tower body, and the air inlet pipe is connected to the annular air distribution pipe.

[0019] Preferably, the annular air distribution pipe is coaxially arranged with the tower body, and the inner wall of the annular air distribution pipe is provided with horizontally arranged air injection holes.

[0020] Preferably, the upper cover of the annular air distribution duct is provided with an upper air guide cover, and the lower cover is provided with a lower air guide cover.

[0021] A downwardly directed inclined surface is arranged at a position relative to the upper air guide cover and the air injection hole, and an arc surface extending outward and bending upward is arranged at the ends of the lower air guide cover and the upper air guide cover respectively.

[0022] Preferably, a material accumulation chamber is concave downwardly at the bottom center of the lower end cover, a discharge pipe is connected to the outside of the material accumulation chamber, and the valve assembly controls the switch of the discharge pipe.

[0023] Preferably, the valve assembly includes a lifting drive device, which is arranged outside the lower end cover. The lifting drive device controls the telescopic rod to move up and down, and the vertically arranged telescopic rod is inserted into the material accumulation chamber.

[0024] A partition is sleeved on the telescopic rod, and a blocking plate is fixed on the top of the telescopic rod. The blocking plate is located above the outside of the material accumulation cavity. The outer diameter of the partition is the same as the inner diameter of the material accumulation cavity, and the outer diameter of the blocking plate is larger than the inner diameter of the material accumulation cavity.

[0025] The telescopic rod is moved upward, the partition plate is placed above the through-opening of the discharge pipe, and the blocking plate is placed outside the material accumulation cavity.

[0026] The telescopic rod moves downward, the partition moves to below the through-opening of the discharge pipe, and the blocking plate seals the upper end of the material accumulation chamber.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The mixing flow assembly is driven by the liquid inside the liquid pipe, realizing the linkage between the spray assembly and the mixing flow assembly, optimizing and integrating resources, saving energy, ensuring the turbulence and air distribution at all times during the spraying process, and improving the mixing efficiency of the spraying liquid and the exhaust gas.

[0029] (2) When the spray assembly sprays liquid, the nozzle rotates back and forth to adjust the spraying angle of the liquid, thereby increasing the contact rate between the liquid and the exhaust gas and optimizing the exhaust gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 This is a structural diagram of an exhaust gas spray tower for exhaust gas treatment.

[0032] Figure 2 This is a cross-sectional view of an exhaust gas spray tower for exhaust gas treatment in this application.

[0033] Figure 3 This is a structural diagram of an auxiliary heat dissipation sleeve in an exhaust gas spray tower for exhaust gas treatment in this application.

[0034] Figure 4 This is a structural diagram of a mixed flow assembly in an exhaust gas spray tower for exhaust gas treatment in this application.

[0035] Figure 5 for Figure 4 An exploded diagram of

[0036] Figure 6 This is a structural diagram of an exhaust gas spray tower support frame for exhaust gas treatment.

[0037] Figure 7This is a structural diagram of a waste gas spray tower spray assembly for waste gas treatment in this application.

[0038] Figure 8 for Figure 7 A top view of

[0039] Fig. 9 for Figure 7 The first cross-sectional view of

[0040] Fig.10 for Figure 7 The second cross-sectional view of

[0041] Fig.11 for Figure 7 The third cross-sectional view of

[0042] Fig.12 This is a structural diagram of an air intake and liquid discharge assembly in an exhaust gas spray tower for exhaust gas treatment in this application.

[0043] Fig.13 for Fig.12 An exploded diagram of

[0044] Fig.14 for Fig.12 The first cross-sectional view of

[0045] Fig.15 for Fig.14 Right view of .

[0046] In the figure: 1-cylinder, 101-bottom support ring, 2-upper end cover, 3-lower end cover, 301-material accumulation chamber, 302-discharge pipe, 4-auxiliary heat dissipation sleeve, 5-inlet pipe, 501-annular air distribution pipe, 6-liquid pipe, 7-first liquid drive device, 701-housing, 702-front end cover, 703-impeller, 704-liquid inlet, 705-discharge port, 8-mixing device, 801-rotating rod, 802-side plate, 803-rotating plate, 9-support frame, 901-column, 9011-jack, 902-lower card plate, 903-support column, 904-upper card plate, 905-insertion rod, 10-clamping ring, 1001-slot, 1002- Threaded hole, 11-annular liquid distribution pipe, 1101-through hole, 12-nozzle, 13-connecting rod, 14-control ring, 15-sleeve, 1501-control plate, 16-cam, 17-second liquid driving device, 18-connecting pipe, 19-vertical pipe, 1901-spring seat, 1902-fixed rod, 1903-through pipe, 20-spring, 21-telescopic rod, 2101-partition, 2102-blocking plate, 22-lifting driving device, 23-drain pipe, 24-liquid level control cylinder, 2401-fixed connecting rod, 25-floating plate, 2501-guide rod, 2502-limiting plate, 26-upper air guide hood, 27-lower air guide hood, 28-exhaust pipe. DETAILED DESCRIPTION

[0047] In conjunction with the accompanying drawings, a waste gas spray tower for waste gas treatment of the present application is further described in detail, but it is not intended to limit the present application.

[0048] A waste gas spray tower for waste gas treatment, comprising Figures 1 to 15 As shown, it includes a tower body, and an air inlet pipe 5 is connected to the lower part of the tower body, and the exhaust gas to be sprayed enters the tower body through the air inlet pipe 5. A spray assembly is arranged above the tower body, a mixed flow assembly is arranged between the spray assembly and the air inlet pipe 5, a drainage assembly is arranged at the bottom of the tower body, and an exhaust pipe 28 is arranged at the top of the tower body.

[0049] The tower body is provided with a liquid pipe 6 which is connected to the spray assembly and is used to supply high-pressure liquid to the spray assembly.

[0050] The mixing flow assembly includes a first liquid driving device 7 and a mixing flow device 8, and the first liquid driving device 7 is connected in series with the liquid pipe 6. The first liquid driving device 7 includes a housing 701 and a front cover 702 that are interlocked with each other, and an impeller 703 is rotatably arranged inside the housing 701, and the central axis of the impeller 703 is connected to the rotating rod 801. A liquid inlet 704 and a liquid outlet 705 are respectively arranged at the upper and lower ends of the housing 701, and the liquid inlet 704 and the liquid outlet 705 are connected in series with the liquid pipe 6.

[0051] The high-pressure liquid in the liquid pipe 6 flows into the housing 701 through the liquid inlet 704, drives the impeller 703 to rotate, and then is discharged from the liquid outlet 705 and flows into the spray assembly.

[0052] The mixing flow device 8 comprises a rotating rod 801 rotatably connected to the tower body, a plurality of side plates 802 arranged perpendicularly thereto are arranged at intervals outside the rotating rod 801 , and a rotating plate 803 is rotatably connected between two adjacent side plates 802 .

[0053] The high-pressure liquid flowing inside the liquid pipe 6 drives the rotating rod 801 to rotate through the first liquid driving device 7, and then drives the side plate 802 to rotate. During the rotation of the side plate 802, the airflow inside the tower body is disturbed. At the same time, during the rotation of the side plate 802, the rotating plate 803 also rotates, thereby optimizing the airflow disturbance effect and making the exhaust gas distribution inside the tower body more uniform.

[0054] The mixing flow assembly is driven by the liquid inside the liquid pipe 6, realizing the linkage between the spraying assembly and the mixing flow assembly, optimizing and integrating resources, saving energy consumption, ensuring turbulent flow and air distribution at all times during the spraying process, and improving the mixing efficiency of the spraying liquid and the exhaust gas.

[0055] The spray assembly is used to spray liquid into the tower body to treat the exhaust gas; the mixing assembly mixes the flow by rotation to ensure uniform exhaust gas concentration in the spray area inside the tower body; the drainage assembly is used to discharge the liquid after contact with the exhaust gas; the exhaust pipe is used to discharge the treated exhaust gas.

[0056] In this embodiment, for the convenience of assembly and disassembly, the tower body includes a cylinder 1 with open ends at both the upper and lower ends, and the upper and lower ends of the cylinder 1 are respectively covered with an upper end cover 2 and a lower end cover 3.

[0057] The outer part of the cylinder 1 is provided with an auxiliary heat dissipation sleeve 4 to cool down the temperature. The auxiliary heat dissipation sleeve 4 mainly includes a middle sleeve, flanges at both ends of the sleeve and heat dissipation fins protruding from the outer part of the sleeve.

[0058] The cylinder body 1 is sleeved with a bottom support ring 101 , and the bottom of the auxiliary heat dissipation sleeve 4 abuts against the top surface of the bottom support ring 101 .

[0059] Several support frames 9 are arranged outside the tower body, and the support frames 9 include vertically arranged columns 901, a lower clamping plate 902 is arranged at the bottom of the column 901, and several plug holes 9011 are arranged at intervals up and down on the column 901. A sliding upper clamping plate 904 is sleeved on the column 901, and an inclined support column 903 is connected to the outside of the column 901 through a reinforcing rod.

[0060] The lower clamping plate 902 is clamped at the bottom of the bottom support ring 101, and the upper clamping plate 904 is clamped above the auxiliary heat dissipation sleeve 4. After the upper clamping plate 904 is in place, the insertion rod 905 is inserted into the insertion hole 9011 above it.

[0061] The bottom of the cylinder 1 is detachably connected to the lower end cover 3 by bolts. The cylinder 1 is connected to the upper end cover 2 by a clamping ring 10. The clamping ring 10 has recessed slots 1001 on both the upper and lower end surfaces. The circumferential surface of the top of the cylinder 1 is inserted into the slot 1001 at the bottom of the clamping ring 10, and the circumferential surface of the bottom of the upper end cover 2 is inserted into the slot 1001 at the top of the clamping ring 10.

[0062] The clamping ring 10 is provided with threaded holes 1002 arranged in two layers, the threaded holes 1002 being arranged opposite to the slots 1001. Bolts are threadedly connected inside the threaded holes 1002, and the bolts pass through the corresponding cylinder 1 and the upper end cover 2.

[0063] The spray assembly includes an annular liquid distribution pipe 11 and a vertical pipe 19. In this embodiment, the annular liquid distribution pipe 11 is polygonal, and a nozzle 12 is rotatably sleeved on each side. A through hole 1101 is provided on the circumferential surface of the annular liquid distribution pipe 11 covered by the nozzle 12. The through hole 1101 is a waist-shaped hole with an arc of 90° to 270°. The annular liquid distribution pipe 11 is connected to the nozzle 12 through the through hole 1101.

[0064] The vertical pipe 19 is coaxially arranged in the middle of the annular liquid distribution pipe 11 , and the vertical pipe 19 is connected to the annular liquid distribution pipe 11 through a through pipe 1903 .

[0065] The vertical tube 19 is sleeved with a sliding sleeve 15, and the sliding sleeve 15 is fixedly connected to a control ring 14 on the outside. The control ring 14 is connected to the nozzle 12 through a connecting rod 13, and the upper and lower ends of the connecting rod 13 are respectively hinged to the control ring 14 and the nozzle 12. The control ring 14 moves up and down, and drives the nozzle 12 to rotate through the connecting rod 13, thereby changing the direction of liquid spraying, achieving uniform liquid distribution, increasing the contact area between the liquid and the exhaust gas, and optimizing the exhaust gas treatment efficiency.

[0066] In order to synchronize the rotation of the nozzle 12 and the spraying of the liquid, in this embodiment, control plates 1501 are fixed on both sides of the top of the sleeve 15 , and a cam 16 is rotatably provided above the control plate 1501 , and the circumferential surface of the cam 16 is always in contact with the top surface of the control plate 1501 .

[0067] The cam 16 is connected to a second liquid driving device 17 via a central axis. The structure of the second liquid driving device 17 is the same as that of the first liquid driving device 7. The second liquid driving device 17 is connected in series with the liquid pipe 6. After the high-pressure liquid in the liquid pipe 6 passes through the second liquid driving device 17, it flows into the vertical pipe 19 through the connecting pipe 18.

[0068] The vertical tube 19 is provided with a spring seat 1901 , and a spring 20 is sleeved on the vertical tube 19 . The upper and lower ends of the spring 20 are respectively in contact with the sliding sleeve 15 and the spring seat 1901 .

[0069] The vertical tube 19 is fixedly connected to the clamping ring 10 via a fixing rod 1902 .

[0070] The liquid discharge assembly includes a liquid discharge pipe 23, a liquid level control cylinder 24 with an open lower end, and a floating plate 25. One end of the liquid discharge pipe 23 is passed through the outside of the tower body, and the other end is connected to the liquid level control cylinder 24. The floating plate 25 is slidably arranged inside the liquid level control cylinder 24, and the outer diameter of the floating plate 25 is the same as the inner diameter of the liquid level control cylinder 24. The liquid level control cylinder 24 is connected to the tower body by a fixed connecting rod 2401.

[0071] The floating plate 25 is connected to a limit plate 2502 via a vertically arranged guide rod 2501. The outer diameter of the limit plate 2502 is larger than the inner diameter of the liquid level control cylinder 24. When the floating plate 25 is at the bottom dead point, it is lower than the discharge pipe 23.

[0072] An annular air distribution pipe 501 is provided inside the tower body, and the air inlet pipe 5 is connected to the annular air distribution pipe 501 .

[0073] The annular air distribution pipe 501 is coaxially arranged with the tower body, and horizontally arranged jet holes are arranged on the inner wall of the annular air distribution pipe 501. The annular air distribution pipe 501 is located below the drain pipe 23, and the exhaust gas ejected from the jet holes is below the liquid surface, and the liquid at the bottom of the tower body filters the exhaust gas first.

[0074] The upper cover of the annular air distribution duct 501 is provided with an upper air guide cover 26 , and the lower cover is provided with a lower air guide cover 27 .

[0075] The upper air guide cover 26 is provided with a downwardly directed inclined surface at a position relative to the air jet hole, and the lower air guide cover 27 is provided with an arc surface extending outward and bending upward corresponding to the end of the upper air guide cover 26. The flow guidance of the upper air guide cover 26 and the lower air guide cover 27 reduces the impact of the exhaust gas ejected from the air jet hole on the liquid, plays a role in slowing down the flow, and prevents the solid matter settled at the bottom of the tower body from being disturbed by the airflow.

[0076] Since there are a certain amount of particles in the exhaust gas, after the exhaust gas contacts the sprayed liquid, the sprayed liquid combines the dust particles in the exhaust gas to achieve dust removal. The bottom center of the lower end cover 3 is concave downwardly provided with a material accumulation chamber 301, and the outside of the material accumulation chamber 301 is connected to a discharge pipe 302, and the valve assembly controls the opening and closing of the discharge pipe 302.

[0077] The solids contained in the liquid after dust removal will settle inside the material accumulation chamber 301 and then be discharged through the discharge pipe 302 at regular intervals.

[0078] In order to reduce the liquid discharged from the discharge pipe 302, in this embodiment, the valve assembly includes a lifting drive device 22, which can be an electric cylinder. The lifting drive device 22 is arranged outside the lower end cover 3, and the lifting drive device 22 controls the telescopic rod 21 to move up and down. The vertically arranged telescopic rod 21 is inserted into the material accumulation chamber 301.

[0079] A partition plate 2101 is sleeved on the telescopic rod 21, and a blocking plate 2102 is fixed on the top of the telescopic rod 21. The blocking plate 2102 is located above the outside of the material accumulation chamber 301. The outer diameter of the partition plate 2101 is the same as the inner diameter of the material accumulation chamber 301, and the outer diameter of the blocking plate 2102 is larger than the inner diameter of the material accumulation chamber 301.

[0080] The telescopic rod moves upward, the partition plate 2101 is placed above the through-opening of the discharge pipe 302 , and the blocking plate 2102 is placed outside the material accumulation chamber 301 .

[0081] The telescopic rod moves downward, the partition plate 2101 moves to below the through-opening of the discharge pipe 302 , and the blocking plate 2102 seals the upper end of the material accumulation chamber 301 .

[0082] The implementation methods of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

1. A waste gas spray tower for waste gas treatment, characterized in that: It comprises a tower body, wherein an air inlet pipe (5) is connected through the lower part of the tower body, a spray assembly is provided at the upper part of the tower body, a mixing flow assembly is provided between the spray assembly and the air inlet pipe (5) in the tower body, a liquid discharge assembly is provided at the bottom of the tower body, and an exhaust pipe (28) is provided at the top of the tower body; The tower body is provided with a liquid pipe (6) which is connected to the spray assembly. The flow mixing assembly comprises a first liquid driving device (7) and a flow mixing device (8), wherein the first liquid driving device (7) is connected in series with the liquid pipe (6); The mixing flow device (8) comprises a rotating rod (801) rotatably connected to the tower body, a plurality of side plates (802) arranged perpendicular to the rotating rod (801) are arranged at intervals outside the rotating rod (801), and a rotating plate (803) is rotatably connected between two adjacent side plates (802); The first liquid driving device (7) drives the rotating rod (801) to rotate; The cylinder (1) and the upper end cover (2) are connected via a clamping ring (10); The spray assembly comprises an annular liquid distribution pipe (11) and a vertical pipe (19); the annular liquid distribution pipe (11) is polygonal, and a nozzle (12) is rotatably sleeved on each side; a through hole (1101) is provided on the circumferential surface of the annular liquid distribution pipe (11) covered by the nozzle (12); the through hole (1101) is a waist-shaped hole; the annular liquid distribution pipe (11) is connected to the nozzle (12) through the through hole (1101); The vertical tube (19) is coaxially arranged in the middle of the annular liquid distribution tube (11), and the vertical tube (19) is connected to the annular liquid distribution tube (11) via a through tube (1903); The vertical tube (19) is sleeved with a sliding sleeve (15), the sliding sleeve (15) is fixedly connected to a control ring (14) on the outside, the control ring (14) is connected to the nozzle (12) via a connecting rod (13), the upper and lower ends of the connecting rod (13) are respectively hinged to the control ring (14) and the nozzle (12), and the control ring (14) moves up and down, driving the nozzle (12) to rotate via the connecting rod (13); A control plate (1501) is fixed on both sides of the top of the sliding sleeve (15), and a cam (16) is rotatably provided above the control plate (1501), and the circumferential surface of the cam (16) is always in contact with the top surface of the control plate (1501); The cam (16) is connected to a second liquid driving device (17) via a central axis. The second liquid driving device (17) is connected in series with the liquid pipe (6). After the high-pressure liquid in the liquid pipe (6) passes through the second liquid driving device (17), it flows into the interior of the vertical pipe (19) through the connecting pipe (18); The vertical tube (19) is provided with a spring seat (1901), and a spring (20) is sleeved on the vertical tube (19), and the upper and lower ends of the spring (20) are respectively in contact with the sliding sleeve (15) and the spring seat (1901); The vertical tube (19) is fixedly connected to the clamping ring (10) via a fixing rod (1902).

2. The waste gas spray tower for waste gas treatment according to claim 1, characterized in that: The first liquid driving device (7) comprises a housing (701) and a front cover (702) which are interlocked with each other, an impeller (703) is rotatably arranged inside the housing (701), and a central axis of the impeller (703) is connected to a rotating rod (801); A liquid inlet (704) and a liquid outlet (705) are respectively provided at the upper and lower ends of the shell (701), and the liquid inlet (704) and the liquid outlet (705) are connected in series with the liquid pipe (6).

3. The waste gas spray tower for waste gas treatment according to claim 1 or 2, characterized in that: The tower body comprises a cylinder (1) with both upper and lower ends being open, and the upper and lower ends of the cylinder (1) are respectively covered with an upper end cover (2) and a lower end cover (3).

4. The waste gas spray tower for waste gas treatment according to claim 3, characterized in that: The outer portion of the cylinder (1) is provided with an auxiliary heat dissipation sleeve (4).

5. The waste gas spray tower for waste gas treatment according to claim 3, characterized in that: The liquid discharge assembly comprises a liquid discharge pipe (23), a liquid level control cylinder (24) and a floating plate (25); one end of the liquid discharge pipe (23) is passed through the outside of the tower body, and the other end is connected to the liquid level control cylinder (24); the floating plate (25) is slidably arranged inside the liquid level control cylinder (24); the outer diameter of the floating plate (25) is the same as the inner diameter of the liquid level control cylinder (24); A limit plate (2502) is connected above the floating plate (25) via a vertically arranged guide rod (2501), and the outer diameter of the limit plate (2502) is greater than the inner diameter of the liquid level control cylinder (24); When the floating plate (25) is located at the bottom dead center, it is lower than the discharge pipe (23).

6. The waste gas spray tower for waste gas treatment according to claim 1, 2 or 5, characterized in that: An annular air distribution pipe (501) is provided inside the tower body, and the air inlet pipe (5) is connected to the annular air distribution pipe (501).

7. The waste gas spray tower for waste gas treatment according to claim 6, characterized in that: The annular air distribution pipe (501) is coaxially arranged with the tower body, and the inner wall of the annular air distribution pipe (501) is provided with horizontally arranged air injection holes.

8. The waste gas spray tower for waste gas treatment according to claim 7, characterized in that: The upper cover of the annular air distribution pipe (501) is provided with an upper air guide cover (26), and the lower cover is provided with a lower air guide cover (27); A downwardly directed inclined surface is arranged at a position of the upper air guide cover (26) relative to the air injection hole, and an arc-shaped surface extending outward and bending upward is arranged at the ends of the lower air guide cover (27) and the upper air guide cover (26) correspondingly.

9. The waste gas spray tower for waste gas treatment according to claim 3, characterized in that: The bottom center of the lower end cover (3) is concavely provided with a material accumulation chamber (301), the outside of the material accumulation chamber (301) is connected through a discharge pipe (302), and the valve assembly controls the opening and closing of the discharge pipe (302).

10. The waste gas spray tower for waste gas treatment according to claim 9, characterized in that: The valve assembly comprises a lifting drive device (22), the lifting drive device (22) is arranged outside the lower end cover (3), the lifting drive device (22) controls the telescopic rod (21) to move up and down, and the vertically arranged telescopic rod (21) is inserted into the material accumulation chamber (301); A partition plate (2101) is sleeved on the telescopic rod (21), a blocking plate (2102) is fixed on the top of the telescopic rod (21), the blocking plate (2102) is located above the outside of the material accumulation chamber (301), the outer diameter of the partition plate (2101) is the same as the inner diameter of the material accumulation chamber (301), and the outer diameter of the blocking plate (2102) is larger than the inner diameter of the material accumulation chamber (301); The telescopic rod is moved upward, the partition plate (2101) is placed above the through-opening of the discharge pipe (302), and the blocking plate (2102) is placed outside the material accumulation chamber (301); The telescopic rod moves downward, the partition plate (2101) moves to below the through-opening of the discharge pipe (302), and the blocking plate (2102) seals the upper end of the material accumulation chamber (301).

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