Waste gas treatment equipment capable of recycling waste gas

Abstract

The present application relates to a waste gas treatment device in which waste gas can be recycled, and belongs to the technical field of waste gas treatment. It includes a spray tower and a carbon dioxide separation device. The carbon dioxide separation device includes a box body, a heating plate is provided inside the box body, the inside of the box body is connected to the bottom of the spray tower through a liquid inlet pipe, and the inside of the box body is connected to the spray assembly inside the spray tower through a liquid return pipe. A first liquid pump is connected in series to the liquid inlet pipe, and a second liquid pump is connected in series to the liquid return pipe. The alkaline solution inside the spray tower flows into the carbon dioxide separation device through the liquid inlet pipe. A carbon dioxide exhaust pipe is connected to the top of the box body. The present application uses an alkaline solution to absorb carbon dioxide in the waste gas by a chemical absorption method, and then reduces the alkaline solution after the reaction by heating, extracting carbon dioxide as a by-product, thereby increasing economic benefits.

Description

Technical Field

[0001] The present application belongs to the technical field of waste gas treatment, and specifically relates to a waste gas treatment device that can recycle waste gas. Background Art

[0002] Many industrial waste gases, especially combustion exhaust gases, contain a large amount of carbon dioxide, which is currently directly discharged. However, carbon dioxide has a wide range of uses. It is used in the food industry to produce carbonated beverages and freeze freshness preservation, and in the chemical industry as a raw material for some chemicals, such as urea and methanol. It can also be used in the pharmaceutical industry, agriculture, welding, and firefighting. Therefore, extracting carbon dioxide from waste gas can effectively improve economic benefits and achieve comprehensive utilization of industrial waste gas. Summary of the invention

[0003] The technical problem to be solved by the present application is: to overcome the shortcomings of the prior art and provide a waste gas treatment device that can recycle waste gas. The present application uses an alkaline solution to absorb carbon dioxide in the waste gas by chemical absorption, and then reduces the alkaline solution after the reaction by heating, extracting carbon dioxide as a by-product, thereby increasing economic benefits.

[0004] The technical solution adopted by this application to solve the problems existing in the prior art is:

[0005] A waste gas treatment device capable of recycling waste gas comprises a spray tower and a carbon dioxide separation device.

[0006] The carbon dioxide separation device comprises a box body, a heating plate is arranged inside the box body, the inside of the box body is connected to the bottom of the spray tower through a liquid inlet pipe, and the inside of the box body is connected to the spray assembly inside the spray tower through a liquid return pipe.

[0007] The liquid inlet pipe is connected in series with a first liquid pump, the liquid return pipe is connected in series with a second liquid pump, and the alkaline solution in the spray tower flows into the carbon dioxide separation device through the liquid inlet pipe.

[0008] The top of the box body is connected through a carbon dioxide exhaust pipe.

[0009] Preferably, a plurality of vertically arranged heating plates are provided on the inner wall of the box body, a spray pipe is correspondingly arranged on the inner side of the heating plate, and a plurality of water spray holes are provided on the side of the spray pipe facing the heating plate.

[0010] The spray pipe is connected with the liquid inlet pipe.

[0011] Preferably, the heating plates are distributed in a circular array around the axis of the box body, an intermediate tube is coaxially arranged inside the box body, the intermediate tube is connected with the liquid inlet pipe, and the intermediate tube is connected with the spray pipe through a branch pipe.

[0012] Preferably, the spray pipe is arranged vertically with the same length as the heating plate, the horizontal cross-section of the spray pipe is rectangular or waist-shaped, and a plurality of water spray holes are distributed on the end surface of the spray pipe in a rectangular array.

[0013] Preferably, a condensing device is connected through the top of the box, and a carbon dioxide exhaust pipe is arranged at the end of the condensing device.

[0014] Preferably, the vertically arranged condensing device includes a second shell which is open at both ends, a plurality of layers of staggered condensing plates are provided inside the second shell, the bottom of the second shell is through-connected with the interior of the box, and the top of the second shell is sequentially through-connected with a guide cover and a carbon dioxide exhaust pipe.

[0015] Preferably, the condensation plate is arranged to be tilted upward, and a plurality of heat sinks are provided on the outside of the second shell.

[0016] Preferably, the spray tower comprises a tank body and an upper end cover, and the spray assembly is arranged between the tank body and the upper end cover.

[0017] The top of the upper end cover is connected with an exhaust gas exhaust pipe, the lower part of the tank body is provided with a liquid level control assembly, the exhaust gas intake pipe outside the tank body is connected with the liquid level control assembly, and the discharge pipe of the liquid level control assembly is connected with the inlet pipe.

[0018] Preferably, the liquid level control assembly includes a first control cylinder, a second control cylinder and a floating plate.

[0019] A plurality of jet holes are arranged on the lower circumferential surface of the internal chamber of the first control cylinder, a through hole connected to the exhaust gas intake pipe is arranged above the jet holes, a first piston is arranged inside the first control cylinder for sliding up and down, a first vertical rod is arranged above the first piston, and the upper end of the first vertical rod is extended to the outside of the first control cylinder.

[0020] The lower end of the second control cylinder is open, a second piston is slidably arranged inside the second control cylinder, a second vertical rod is arranged above the second piston, and the upper end of the second vertical rod is passed through the outside of the second control cylinder, and the discharge pipe is connected with the inner cavity of the second control cylinder.

[0021] The upper ends of the first vertical rod and the second vertical rod are both fixedly connected to the floating plate.

[0022] The bottom of the first control cylinder is connected with a mounting plate through a supporting column, and the liquid level control assembly is fixedly connected to the bottom surface of the tank body through the mounting plate.

[0023] Preferably, the jet holes are arc-shaped, and the jet holes are distributed in a ring array around the axis of the first control cylinder.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The carbon dioxide in the exhaust gas is absorbed by an alkaline solution, and then reduced and regenerated by a carbon dioxide separation device to regenerate an alkaline solution and carbon dioxide. Carbon dioxide is used as an industrial by-product to increase economic benefits, and the regenerated alkaline solution is reused to reduce costs.

[0026] (2) The waste gas is directly discharged into the alkaline solution retained at the bottom of the tank, where it first reacts with the alkaline solution to adsorb carbon dioxide. After the adsorption, the waste gas is then in contact with the alkaline solution sprayed by the spray assembly to further adsorb carbon dioxide, thereby improving the adsorption effect of the alkaline solution on carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 This is a first structural diagram of a waste gas treatment device for recycling waste gas in this application.

[0029] Figure 2 The second structural diagram of a waste gas treatment device for recycling waste gas in this application is shown in FIG.

[0030] Figure 3 for Figure 1 Front view of

[0031] Figure 4 for Figure 1 A partial cross-sectional view of

[0032] Figure 5 This is a structural diagram of a liquid level control assembly in a waste gas treatment device in which waste gas can be recycled.

[0033] Figure 6 for Figure 5 Vertical cross-section view of the floating plate at the axial direction,

[0034] Figure 7 for Figure 6 The structural diagram after the middle floating plate is moved up.

[0035] Figure 8 for Figure 5 Horizontal cross-section view of the fumarole.

[0036] Fig. 9 This is a structural diagram of a spray assembly in a waste gas treatment device in which waste gas can be recycled.

[0037] Fig.10 for Fig. 9 A top view of

[0038] Fig.11 for Fig. 9 The first cross-sectional view of

[0039] Fig.12 for Fig. 9 The second cross-sectional view of

[0040] Fig.13 for Fig. 9 The third cross-sectional view of

[0041] Fig.14 This is the exploded view of the liquid drive device in the spray assembly.

[0042] Fig.15 This is a cross-sectional view of a carbon dioxide separation device in a waste gas treatment device in which waste gas can be recycled in this application.

[0043] Fig.16 This is a cross-sectional view of a condensing device in a waste gas treatment device in the present application in which waste gas can be recycled.

[0044] In the figure: 1-tank body, 2-upper end cover, 201-exhaust gas exhaust pipe, 3-exhaust gas intake pipe, 4-first control cylinder, 401-jet hole, 402-first piston, 403-first vertical rod, 5-second control cylinder, 501-second piston, 502-second vertical rod, 6-floating plate, 7-support column, 8-mounting plate, 9-drain pipe, 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 board, 16-cam, 17-liquid drive device, 1701-first shell , 1702-front end cover, 1703-impeller, 1704-liquid inlet, 1705-liquid outlet, 18-connecting pipe, 19-vertical pipe, 1901-spring seat, 1902-fixing rod, 1903-through pipe, 20-spring, 21-liquid inlet pipe, 22-first liquid pump, 23-box, 24-heating plate, 25-spray pipe, 2501-water spray hole, 26-middle pipe, 2601-branch pipe, 27-condensing device, 2701-second shell, 2702-guide cover, 2703-carbon dioxide exhaust pipe, 2704-condensation plate, 2705-heat sink, 28-return pipe, 29-second liquid pump. DETAILED DESCRIPTION

[0045] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0046] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present application.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] The following is a further detailed description of a waste gas treatment device for recycling waste gas in the present application in conjunction with the accompanying drawings, but it is not intended to limit the present application.

[0049] A waste gas treatment device capable of recycling waste gas, comprising Figures 1 to 16 As shown, it includes a spray tower and a carbon dioxide separation device.

[0050] The carbon dioxide separation device includes a box body 23, a heating plate 24 is arranged inside the box body 23, the inside of the box body 23 is connected to the bottom of the spray tower through a liquid inlet pipe 21, and the inside of the box body 23 is connected to the spray assembly inside the spray tower through a liquid return pipe 28.

[0051] The liquid inlet pipe 21 is connected in series with a first liquid pump 22 , and the liquid return pipe 28 is connected in series with a second liquid pump 29 . The alkaline solution in the spray tower flows into the carbon dioxide separation device through the liquid inlet pipe 21 .

[0052] The top of the box body 23 is connected with a carbon dioxide exhaust pipe 2703 .

[0053] The spray tower comprises a tank body 1 and an upper end cover 2 , and the spray assembly is arranged between the tank body 1 and the upper end cover 2 .

[0054] The top of the upper end cover 2 is connected with an exhaust gas exhaust pipe 201, a liquid level control assembly is provided at the lower part of the tank body 1, the exhaust gas intake pipe 3 outside the tank body 1 is connected with the liquid level control assembly, and the discharge pipe 9 of the liquid level control assembly is connected with the liquid inlet pipe 21.

[0055] The waste gas after dust removal enters the spray tower through the waste gas inlet pipe 3, and the spray assembly sprays an alkaline solution, such as an amine compound solution, into the spray tower. The CO2 in the waste gas reacts chemically with the amine compound to generate carbonate or bicarbonate. The carbonate or bicarbonate solution is discharged into the carbon dioxide separation device through the drain pipe 9 and the inlet pipe 21, and the solution is reduced by heating to release carbon dioxide and re-produce the amine compound. The carbon dioxide is finally discharged through the carbon dioxide discharge pipe 2703 to form a separate product, thereby realizing the reuse of the waste gas and improving the economic value. The amine compound solution is pumped into the spray assembly through the return pipe 28 to achieve reuse and reduce the cost of carbon dioxide extraction.

[0056] Since the heating temperature during the carbonate or bicarbonate reduction reaction is between 120°C and 150°C, the discharged carbon dioxide contains a portion of water vapor. In order to achieve the separation of water vapor, in this embodiment, a condensing device 27 is connected through the top of the box body 23, and a carbon dioxide exhaust pipe 2703 is arranged at the end of the condensing device 27.

[0057] The condensing device 27 is used to cool the mixed gas so that the water vapor is liquefied and separated from the carbon dioxide gas.

[0058] In this embodiment, Fig.16 As shown, the vertically arranged condensing device 27 includes a second shell 2701 with both upper and lower ends open, and a plurality of layers of staggered condensing plates 2704 are arranged inside the second shell 2701. The condensing plates 2704 are arranged upwardly tilted, with one end abutting against the second shell 2701, and the other end separating from the inner wall of the second shell 2701 by a gap, and one end of the gap is higher than the end abutting against the second shell 2701. In this way, the gas moves upwardly along the bottom surface of the condensing plate 2704, and then moves upward along the bottom surface of the upper condensing plate 2704, thereby increasing the flow time and contact time of the gas inside the condensing device, and facilitating cooling and condensation.

[0059] In order to dissipate heat from the second housing 2701 in time, a plurality of heat sinks 2705 are provided outside the second housing 2701. The second housing 2701 can also be made of aluminum alloy or magnesium alloy with good heat dissipation effect to optimize the heat dissipation and cooling effect.

[0060] The bottom of the second shell 2701 is connected to the inside of the box body 23, and the top of the second shell 2701 is connected to the guide cover 2702 and the carbon dioxide exhaust pipe 2703 in sequence.

[0061] In order to speed up the heating reduction of carbonate or bicarbonate, Fig.15 As shown, the inner wall of the box body 23 is provided with a plurality of vertically arranged heating plates 24, and a spray pipe 25 is arranged correspondingly inside the heating plate 24. The spray pipe 25 is provided with a plurality of water spray holes 2501 on one side facing the heating plate 24. The spray pipe 25 is connected with the liquid inlet pipe 21 through.

[0062] Furthermore, the heating plates 24 are distributed in a circular array around the axis of the box body 23, and an intermediate tube 26 is coaxially arranged inside the box body 23. The intermediate tube 26 is connected to the liquid inlet pipe 21, and the intermediate tube 26 is connected to the spray pipe 25 through a branch pipe 2601.

[0063] The spray pipe 25 is arranged vertically with the same length as the heating plate 24 . The horizontal cross-section of the spray pipe 25 is rectangular or waist-shaped. A plurality of water spray holes 2501 are distributed on the end surface of the spray pipe 25 in a rectangular array.

[0064] A mounting hole is provided on the inner wall of the box 23, and the heating plate 24 is set in the mounting hole. An atomizing nozzle can be added at the water spray hole 2501, and the solution is sprayed on the heating plate 24 after atomization, which can directly and quickly increase the solution temperature to reach the reduction reaction temperature, and the reaction generates carbon dioxide, water vapor and liquid amino compounds.

[0065] In the spray tower, if the exhaust gas only contacts the alkaline solution sprayed from the spray assembly, the reaction efficiency of the alkaline solution and carbon dioxide is low, and the treated exhaust gas will still contain a portion of carbon dioxide.

[0066] In order to improve the absorption efficiency of carbon dioxide, in this embodiment, the alkaline solution will be partially retained at the bottom of the tank body 1, and the inlet of the exhaust gas is lower than the liquid level of the alkaline solution at the bottom of the tank body 1, that is, the exhaust gas is first discharged directly into the alkaline solution retained at the bottom of the tank body 1, and first reacts with the alkaline solution to adsorb carbon dioxide. After the adsorption, the exhaust gas is contacted with the alkaline solution sprayed by the spray assembly to further adsorb carbon dioxide, thereby improving the adsorption effect of the alkaline solution on carbon dioxide.

[0067] In order to achieve the above purpose, in this embodiment, Figures 5 to 7 As shown, the liquid level control assembly includes a first control cylinder 4 , a second control cylinder 5 and a floating plate 6 .

[0068] A plurality of jet holes 401 are provided on the circumferential surface below the inner chamber of the first control cylinder 4, a through hole connected to the exhaust gas intake pipe 3 is provided above the jet holes 401, a first piston 402 is provided inside the first control cylinder 4 to slide up and down, a first vertical rod 403 is provided above the first piston 402, and the upper end of the first vertical rod 403 is extended to the outside of the first control cylinder 4.

[0069] The lower end of the second control cylinder 5 is open, a second piston 501 is slidably provided inside the second control cylinder 5, a second vertical rod 502 is provided above the second piston 501, the upper end of the second vertical rod 502 is passed through to the outside of the second control cylinder 5, and the drain pipe 9 is connected with the inner cavity of the second control cylinder 5.

[0070] The upper ends of the first vertical rod 403 and the second vertical rod 502 are both fixedly connected to the floating plate 6 .

[0071] The bottom of the first control cylinder 4 is connected to a mounting plate 8 via a support column 7 , and the liquid level control assembly is fixedly connected to the bottom surface of the tank body 1 via the mounting plate 8 .

[0072] Depend on Figure 8 As shown, the jet holes 401 are arc-shaped, and the jet holes 401 are distributed in a circular array around the axis of the first control cylinder 4. In this way, the exhaust gas is guided by the jet holes 401 and is spiral, which will disturb the external alkaline solution and have a stirring effect, thereby improving the contact efficiency between the carbon dioxide in the exhaust gas and the alkaline solution and optimizing the reaction effect.

[0073] The tank body 1 and the upper end cover 2 are connected 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 tank body 1 is inserted into the slot 1001 at the bottom of the clamping ring 10, and the circumferential surface of the upper end cover 2 is inserted into the slot 1001 at the top of the clamping ring 10.

[0074] 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 tank body 1 and the upper end cover 2.

[0075] 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.

[0076] 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 through a through tube 1903 .

[0077] 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.

[0078] 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 .

[0079] The cam 16 is connected to a liquid driving device 17 via a central axis. The liquid driving device 17 includes a first housing 1701 and a front cover 1702 that are interlocked. An impeller 1703 is rotatably arranged inside the first housing 1701. The central axis of the impeller 1703 is coaxially connected to the cam 16. A liquid inlet 1704 and a liquid outlet 1705 are respectively arranged at the upper and lower ends of the first housing 1701. The first housing 1701 is fixedly connected to the vertical tube 19.

[0080] The liquid inlet 1704 is connected to the liquid return pipe 28 , and the liquid discharge port 1705 is connected to the inner chamber of the vertical pipe 19 through the connecting pipe 18 .

[0081] The high-pressure liquid flows into the first housing 1701 through the liquid inlet 1704, drives the impeller 1703 to rotate, and then is discharged from the liquid outlet 1705 and flows into the spray assembly.

[0082] 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 .

[0083] The vertical tube 19 is fixedly connected to the clamping ring 10 via a fixing rod 1902 .

[0084] The liquid flows into the liquid driving device 17 through the liquid inlet 1704 , drives the impeller 1703 to rotate, and then flows into the annular liquid distribution pipe 11 through the liquid discharge port 1705 , the connecting pipe 18 and the vertical pipe 19 .

[0085] The impeller 1703 drives the cam 16 to rotate, and the cam 16 cooperates with the spring 20 to drive the sleeve 15 to move up and down, and then drives the nozzle 12 to rotate through the control ring 14 and the connecting rod 13 to change the direction of liquid spraying.

[0086] 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 treatment device capable of recycling waste gas, characterized in that: It includes a spray tower and a carbon dioxide separation device; The carbon dioxide separation device comprises a box (23), a heating plate (24) is provided inside the box (23), the inside of the box (23) is connected to the bottom of the spray tower via a liquid inlet pipe (21), and the inside of the box (23) is connected to the spray assembly inside the spray tower via a liquid return pipe (28); A first liquid pump (22) is connected in series to the liquid inlet pipe (21), and a second liquid pump (29) is connected in series to the liquid return pipe (28); the alkaline solution in the spray tower flows into the carbon dioxide separation device through the liquid inlet pipe (21); The top of the box body (23) is connected through a carbon dioxide discharge pipe (2703); The spray tower comprises a tank body (1) and an upper end cover (2), the tank body (1) and the upper end cover (2) are connected via a clamping ring (10), and the spray assembly is arranged between the tank body (1) and the upper end cover (2); The top of the upper end cover (2) is connected through an exhaust gas exhaust pipe (201), a liquid level control assembly is provided at the lower part of the tank body (1), an exhaust gas intake pipe (3) outside the tank body (1) is connected through the liquid level control assembly, and a liquid discharge pipe (9) of the liquid level control assembly is connected through the liquid inlet pipe (21); The liquid level control assembly comprises a first control cylinder (4), a second control cylinder (5) and a floating plate (6); A plurality of jet holes (401) are provided on the circumferential surface below the inner chamber of the first control cylinder (4); a through hole connected to the exhaust gas intake pipe (3) is provided above the jet holes (401); a first piston (402) is provided inside the first control cylinder (4) to slide up and down; a first vertical rod (403) is provided above the first piston (402); and the upper end of the first vertical rod (403) is extended to the outside of the first control cylinder (4); The lower end of the second control cylinder (5) is open, a second piston (501) is slidably provided inside the second control cylinder (5), a second vertical rod (502) is provided above the second piston (501), the upper end of the second vertical rod (502) is passed through to the outside of the second control cylinder (5), and the discharge pipe (9) is connected to the inner cavity of the second control cylinder (5); The upper ends of the first vertical rod (403) and the second vertical rod (502) are both fixedly connected to the floating plate (6); The bottom of the first control cylinder (4) is connected to a mounting plate (8) via a support column (7), and the liquid level control assembly is fixedly connected to the bottom surface of the tank body (1) via the mounting plate (8); 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 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 liquid drive device (17) via a central axis; the liquid drive device (17) is fixedly connected to the vertical tube (19); a liquid inlet (1704) of the liquid drive device (17) is connected to a liquid return tube (28); and a liquid discharge port (1705) of the liquid drive device (17) is connected to an internal chamber of the vertical tube (19) via a connecting tube (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 treatment equipment according to claim 1, characterized in that: A plurality of vertically arranged heating plates (24) are provided on the inner wall of the box body (23), a spray pipe (25) is arranged correspondingly on the inner side of the heating plate (24), and a plurality of water spray holes (2501) are provided on the side of the spray pipe (25) facing the heating plate (24); The spray pipe (25) is connected to the liquid inlet pipe (21).

3. The waste gas treatment equipment according to claim 2, wherein: The heating plates (24) are distributed in a circular array around the axis of the box body (23), and an intermediate tube (26) is coaxially arranged inside the box body (23). The intermediate tube (26) is connected to the liquid inlet tube (21), and the intermediate tube (26) is connected to the spray tube (25) via a branch tube (2601).

4. The waste gas treatment equipment according to claim 2 or 3, wherein: The spray pipe (25) and the heating plate (24) are arranged vertically and are of equal length; the horizontal cross-section of the spray pipe (25) is rectangular or waist-shaped; and a plurality of water spray holes (2501) are distributed on the end surface of the spray pipe (25) in a rectangular array.

5. The waste gas treatment equipment according to claim 1, 2 or 3, wherein: A condensing device (27) is connected through the top of the box body (23), and a carbon dioxide exhaust pipe (2703) is arranged at the end of the condensing device (27).

6. The waste gas treatment equipment according to claim 5, characterized in that: The condensing device (27) is arranged vertically, and includes a second shell (2701) which is open at both ends. A plurality of layers of staggered condensing plates (2704) are arranged inside the second shell (2701). The bottom of the second shell (2701) is connected to the inside of the box (23). The top of the second shell (2701) is connected in sequence with a guide cover (2702) and a carbon dioxide exhaust pipe (2703).

7. The waste gas treatment equipment according to claim 6, characterized in that: The condensation plate (2704) is arranged to be tilted upward, and a plurality of heat sinks (2705) are provided on the outside of the second shell (2701).

8. The waste gas treatment equipment according to claim 1, 2, 3, 6 or 7, wherein: The jet holes (401) are arc-shaped, and the jet holes (401) are distributed in a ring array around the axis of the first control cylinder (4).

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