Thermal power plant slurry treatment device and slurry treatment method

Abstract

The invention discloses a thermal power plant slurry treatment device and a slurry treatment method, and belongs to the technical field of waste gas treatment. A thermal power plant slurry treatment device comprises a recovery mechanism arranged at the bottom of an absorption tower, a spraying mechanism is arranged in a tower body of the absorption tower and comprises an upper spraying structure and a lower spraying structure, the recovery mechanism is connected with the upper spraying structure, and filler is arranged between the upper spraying structure and the lower spraying structure. A stirring structure for stirring flue gas is arranged between the filler and the lower spraying structure, and a power structure for driving the stirring structure and the lower spraying structure to rotate is arranged outside the tower body. By adopting the thermal power plant slurry treatment device and the slurry treatment method, the slurry can be recycled, and the waste gas absorption and desulfurization effect of the slurry is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a slurry treatment device and a slurry treatment method for a thermal power plant. Background Art

[0002] During the power generation process of thermal power plants, the exhaust gas produced by combustion contains a lot of sulfur dioxide. Direct emission of sulfur dioxide into the atmosphere will cause atmospheric pollution and form acid rain. Therefore, it is necessary to desulfurize the exhaust gas burned in thermal power plants. The absorption tower plays a very important role in the desulfurization of exhaust gas. Desulfurizers such as limestone slurry are sprayed in the absorption tower and come into contact with the exhaust gas entering from the bottom of the absorption tower. The sulfur dioxide in the exhaust gas reacts with the calcium carbonate in the slurry to form gypsum. After the gypsum crystallizes, it forms a precipitate and is separated from the slurry. In order to improve the utilization efficiency of the slurry, the slurry is circulated and transported to the upper part of the tower body for use as an absorbent. The recycling of existing absorption tower slurry generally involves directly transporting the slurry to the top of the tower body. Since the slurry contains more gypsum, the content of calcium carbonate is reduced, which affects the desulfurization effect of the slurry.

[0003] In addition, when limestone is used as an absorbent to absorb sulfur dioxide in the exhaust gas, the fly ash in the flue gas will hinder the dissolution of the limestone, reduce the dissolution rate of the limestone, and lead to a decrease in the desulfurization efficiency. Although the solid particles in the exhaust gas are treated before entering the tower body, there are still many solid particles in the exhaust gas, which affects the desulfurization effect. The exhaust gas enters the tower body and is unevenly distributed in the tower body, so that the exhaust gas cannot fully contact with the slurry, which affects the absorption effect of the slurry on the exhaust gas. Summary of the invention

[0004] The purpose of the present invention is to provide a slurry treatment device and a slurry treatment method for a thermal power plant, so as to recycle the slurry and improve the absorption and desulfurization effect of the slurry on the waste gas.

[0005] To achieve the above-mentioned purpose, the present invention provides a slurry treatment device for a thermal power plant, comprising a recovery mechanism arranged at the bottom of an absorption tower, a spray mechanism arranged inside the tower body of the absorption tower, the spray mechanism comprising an upper spray structure and a lower spray structure, the recovery mechanism is connected to the upper spray structure, a filler is arranged between the upper spray structure and the lower spray structure, a stirring structure for stirring the flue gas is arranged between the filler and the lower spray structure, and a power structure for driving the stirring structure and the lower spray structure to rotate is arranged outside the tower body.

[0006] Preferably, the recovery mechanism includes a slurry chamber arranged at the bottom of the tower body, a liquid guide plate for guiding the slurry is arranged at the bottom end of the tower body, a first partition is arranged inside the slurry chamber, the first partition is connected to the liquid guide plate, the first partition divides the slurry chamber into a treatment chamber and a clarification chamber, a liquid through hole connecting the clarification chamber with the treatment chamber is arranged on the first partition, the liquid guide plate guides the slurry into the treatment chamber, a drain port is arranged at the bottom of the treatment chamber, a blocking frame is arranged on the upper part of the clarification chamber, the blocking frame is located above the liquid through hole, the clarification chamber is connected to the upper spray structure through a first connecting pipe, the liquid inlet end of the first connecting pipe is located above the blocking frame, and a first circulation pump and a valve are arranged on the first connecting pipe.

[0007] Preferably, the blocking frame is fixedly arranged on the inner wall of the clarification chamber, the blocking frame is fixedly connected to the first partition, the blocking frame is a structure with openings at both ends, a plurality of blocking units distributed in a linear array are arranged inside the blocking frame, and a flow channel is formed between adjacent blocking units; the blocking unit includes a first baffle and a second baffle, the first baffle is located above the second baffle, the first baffle and the second baffle overlap, the first baffle and the second baffle are L-shaped plate structures with opposite bending directions, a slurry flow space is arranged between the first baffle and the second baffle, and the bottom ends of the first baffle and the second baffle are both conical structures.

[0008] Preferably, the lower spray structure includes a transmission frame, which is located in the tower body and is sealed and rotatably connected to the tower body. A water storage chamber is arranged at the center of the transmission frame, which is connected to the transmission frame through a connecting plate, and the water inlet end of the water storage chamber is connected to the third connecting pipe through a rotating joint, and the third connecting pipe is connected to the slurry cylinder through a second connecting pipe, a second circulating pump is arranged on the second connecting pipe, a valve is arranged on the third connecting pipe, a rotating rod is arranged below the water storage chamber, a plurality of second support rods are arranged on the rotating rod, a first nozzle is arranged on the second support rod, and the internal cavity of the second branch pipe is connected to the water storage chamber through the internal cavity of the rotating rod; a spray assembly is arranged on the connecting plate.

[0009] Preferably, the spray assembly includes a mounting rod, a plurality of first support rods are provided on the mounting rod, a first nozzle is provided on the first support rod, the first nozzles on adjacent first support rods are staggered, a rotating plate is provided on the top of the mounting rod, one end of the rotating plate is fixed on the axle of the third gear, the third gear is rotatably connected to the connecting plate, a second gear is rotatably provided on the connecting plate, the second gear is meshed with the third gear, a first gear is provided on the axle of the second gear, the first gear is meshed with a fixed gear ring fixedly provided on the inner wall of the tower body, the internal cavity of the second support rod is connected to the internal cavity of the mounting rod, the internal cavity of the mounting rod is connected to the internal cavity of the connecting plate through the internal cavity of the rotating plate and the internal cavity of the third gear axle, and the internal cavity of the connecting plate is connected to the water storage cavity.

[0010] Preferably, the stirring structure includes a first stirring shaft, which is rotatably connected to the inner wall of the tower body, and one end of the first stirring shaft extending out of the tower body is connected to the transmission structure. A section of the first stirring shaft located inside the tower body is provided with a plurality of stirring rods, and stirring components are respectively provided on both sides of the first stirring shaft. The stirring component includes a second stirring shaft, and both ends of the second stirring shaft are rotatably connected to the inner wall of the tower body. A plurality of stirring rods are provided on the second stirring shaft, and the stirring rods on the first stirring shaft and the second stirring shaft are staggered. A fifth gear is provided at one end of the second stirring shaft extending out of the tower body, and the fifth gear is meshed with a fourth gear provided on the first stirring shaft through a first intermediate gear and a second intermediate gear. Both the first intermediate gear and the second intermediate gear are rotatably connected to the tower body.

[0011] Preferably, the power structure includes a slide seat, the slide seat is arranged on the outside of the tower body, a protective cover is arranged on the outside of the slide seat, the protective cover is fixed on the outer wall of the tower body, a guide groove is arranged on the protective cover to guide the horizontal sliding of the slide seat, guide blocks adapted to the guide groove are arranged on both sides of the slide seat, the guide blocks are located in the guide groove and are slidably connected to the guide groove, a first slider and a second slider are slidingly arranged inside the slide seat, the first slider and the second slider are staggered, the slide seat is provided with a first slide groove and a second slide groove which respectively guide the sliding of the first slider and the second slider, the first slide groove and the second slide groove are arranged in parallel, the first slider is located in the first slide groove and is slidably connected to the first slide groove, the second slider is located in the second slide groove and is slidably connected to the second slide groove, the first slider is connected to the first transmission rod via a first connecting shaft, and the first connecting shaft and the first slider and the first transmission rod are all rotatably connected The first transmission rod is fixed on the first rotating shaft, the first rotating shaft is rotatably connected with the protective cover, the protective cover is provided with a motor that drives the first rotating shaft to rotate, the first rotating shaft is provided with a driving gear, the driving gear is meshed with the gear ring arranged on the side of the transmission frame through the transmission gear, the transmission gear is rotatably connected with the tower body, and the tower body is provided with an avoidance hole for the transmission gear to pass through, the second slider is connected with the second transmission rod through the second connecting shaft, the length of the second transmission rod is greater than the length of the first transmission rod, the second connecting shaft is rotatably connected with the second slider and the second transmission rod, the second transmission rod is fixed on the second rotating shaft, the second rotating shaft is coaxial with the first rotating shaft, a first bevel gear is provided at one end of the second rotating shaft, the first bevel gear is meshed with the second bevel gear arranged at the end of the first stirring shaft, a fixing plate for supporting the second rotating shaft is provided inside the protective cover, and the second rotating shaft is rotatably connected with the fixing plate.

[0012] Preferably, the upper spray structure includes a water inlet pipe, the arc-shaped water inlet pipe is fixed on the inner wall of the tower body, the water inlet pipe is connected to the second connecting pipe, the second connecting pipe is provided with a valve, the water inlet pipe is provided with a plurality of parallel spray pipes, and the spray pipe is provided with a second nozzle for spraying downwards.

[0013] Preferably, a waste heat recovery mechanism is provided inside the tower body, and the waste heat recovery mechanism is arranged above the upper spray structure; the waste heat recovery mechanism includes a fixed frame, the fixed frame is fixed on the inner wall of the tower body, a second partition is provided inside the fixed frame, the second partition divides the fixed frame into a first water chamber and a second water chamber, a first baffle is provided inside the first water chamber to divide the first water chamber into a first water inlet chamber and a first water outlet chamber, the first water inlet chamber is connected to the first water outlet chamber through a plurality of first branch pipes arranged in parallel, the first water inlet chamber is provided with a first water inlet, the first water outlet chamber is provided with a first water outlet, and the first water inlet chamber is provided with a first water outlet. The water inlet is connected to the water tank through a fourth connecting pipe, a third circulation pump is arranged on the fourth connecting pipe, the first water outlet is connected to the heat exchanger through a fifth connecting pipe, and the heat exchanger is connected to the water tank through a sixth connecting pipe; a second baffle is arranged inside the second water chamber to divide the second water chamber into a second water inlet chamber and a second water outlet chamber, the second water inlet chamber and the second water outlet chamber are connected through a plurality of second branch pipes arranged in parallel, the second branch pipe is arranged perpendicular to the first branch pipe, a second water inlet is arranged on the second water inlet chamber, a second water outlet is arranged on the first water outlet chamber, the second water inlet is connected to the fourth connecting pipe, and the second water outlet is connected to the fifth connecting pipe.

[0014] The slurry treatment method based on the above-mentioned slurry treatment device of the thermal power plant comprises the following steps:

[0015] S1. Exhaust gas enters the tower body through the air inlet, and the second circulating pump sends the slurry in the slurry barrel into the water storage chamber through the second connecting pipe and the third connecting pipe. The water in the water storage chamber is sprayed out from the first nozzle through the rotating rod and the second support rod. The water in the water storage chamber enters the mounting rod through the connecting plate, the third gear axle, and the rotating plate, and then the first support rod is sprayed out from the first nozzle. The slurry sprayed from the first nozzle performs preliminary cooling and absorption treatment on the exhaust gas;

[0016] S2, the first motor drives the driving gear to rotate through the first rotating shaft, the driving gear drives the transmission frame to rotate through the transmission gear and the gear ring, the transmission frame drives the water storage chamber to rotate through the connecting plate, the water storage chamber drives the rotating rod and the second support rod to rotate synchronously, the second support rod drives the first nozzle to rotate, and the slurry is rotated and sprayed; the connecting plate drives the first gear to rotate synchronously, the first gear rotates under the action of the fixed gear ring, the first gear drives the second gear to rotate synchronously, the second gear drives the rotating plate to rotate through the third gear, the rotating plate drives the mounting rod and the first support rod to rotate around the axle of the third gear, and the first support rod drives the first nozzle to rotate and spray the slurry;

[0017] S3, the first rotating shaft drives the first transmission rod to rotate, the first transmission rod drives the first slider to rotate through the first connecting shaft, the first slider drives the slide seat to slide through the first slide groove, the slide seat slides horizontally under the limiting action of the guide groove, and the first slider slides along the first slide groove; the slide seat drives the second slider to slide along the second slide groove through the second slide groove, the second slider drives the second transmission rod to rotate through the second connecting shaft, the length of the second transmission rod is greater than the length of the first transmission rod, the second transmission rod swings back and forth, the second transmission rod drives the second rotating shaft to rotate back and forth, the second rotating shaft drives the first stirring shaft to rotate back and forth through the first bevel gear and the second bevel gear, the first stirring shaft drives the second stirring shaft to rotate back and forth through the fourth gear, the first intermediate gear, the second intermediate gear, and the fifth gear, the first stirring shaft and the second stirring shaft drive the stirring rod to rotate back and forth to stir the exhaust gas;

[0018] S4. The slurry in the slurry cylinder is sent into the water inlet pipe through the second connecting pipe under the action of the second circulation pump. The water inlet pipe sprays the slurry downward through the spray pipe and the second nozzle. The turbulent exhaust gas stirred by the stirring rod moves upward. The exhaust gas contacts the slurry sprayed from the spray pipe in the filler, and absorbs the exhaust gas.

[0019] S5, the water in the water tank enters the first branch pipe and the second branch pipe through the fourth connecting pipe under the action of the third circulating pump, the waste gas after being absorbed by the slurry moves upward, the waste gas flows through the channel surrounded by the first branch pipe and the second branch pipe, the waste gas exchanges heat with the water in the first branch pipe and the second branch pipe, the water after heat exchange enters the heat exchanger through the fifth connecting pipe for heat exchange, and the water after heat exchange returns to the water tank through the sixth connecting pipe;

[0020] S6. The slurry after absorbing the exhaust gas flows into the treatment chamber through the liquid guide plate, and crystallization and precipitation are carried out in the treatment chamber. The slurry above the treatment chamber enters the clarification chamber through the liquid hole, and the slurry is further precipitated in the clarification chamber. The slurry moves upward through the blocking frame, and the first baffle and the second baffle inside the blocking frame block the solid particles. The slurry above the blocking frame is sent into the water inlet pipe through the first connecting pipe and the second connecting pipe under the action of the first circulation pump, and the slurry is sprayed downward through the spray pipe and the second nozzle.

[0021] The advantages and positive effects of the slurry treatment device and slurry treatment method of a thermal power plant described in the present invention are:

[0022] 1. A processing chamber and a clarifying chamber are arranged in the slurry chamber, and a blocking frame is arranged in the clarifying chamber to block the passage of solid particles, so that relatively pure slurry is sent to the upper spray structure through the first circulation pump and the first connecting pipe to realize the circulation and recycling of slurry.

[0023] 2. A lower spray structure is set in the tower body, which pre-absorbs the waste gas and reduces the temperature of the waste gas. During the rotation process, the first and second support rods of the lower spray structure not only improve the uniformity of the slurry spraying, but also have a stirring effect on the waste gas, increase the turbulence of the waste gas, make the waste gas fully contact with the slurry, and improve the pre-treatment effect of the slurry on the waste gas. Pre-treating the waste gas through the lower spray structure can further remove solid particles in the waste gas and improve the subsequent desulfurization effect. In addition, new slurry can be added to the tower body to maintain the concentration of calcium carbonate and improve the desulfurization effect.

[0024] 3. A stirring structure is set in the tower body, which drives the stirring rod to rotate and stir the exhaust gas, thereby improving the uniformity and turbulence of the exhaust gas, improving the uniformity of the contact between the exhaust gas and the slurry, and improving the exhaust gas absorption effect.

[0025] 4. The power structure drives the lower spray structure to rotate, and drives the stirring structure to rotate reciprocatingly, which not only simplifies the structure, but also improves the stirring effect on the exhaust gas, improves the uniformity of the contact between the slurry and the exhaust gas, and provides the slurry with an absorption effect on the exhaust gas.

[0026] 5. A waste heat recovery mechanism is set on the upper part of the tower to further reduce the exhaust temperature of the exhaust gas and reduce energy waste.

[0027] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of a cross-sectional structure of an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of a blocking frame structure according to an embodiment of the present invention;

[0031] Figure 4 For attachment Figure 2 Middle A: Enlarged view;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the lower spray structure according to an embodiment of the present invention;

[0033] Figure 6 It is a schematic diagram of the front view structure of the lower spray structure of an embodiment of the present invention;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the stirring structure according to an embodiment of the present invention;

[0035] Figure 8It is a front view structural schematic diagram of a stirring structure according to an embodiment of the present invention;

[0036] Fig. 9 Schematic diagram of the transmission structure of an embodiment of the present invention;

[0037] Fig.10 A schematic diagram of an upper spray structure according to an embodiment of the present invention;

[0038] Fig.11 A schematic diagram of a fixed frame structure according to an embodiment of the present invention;

[0039] Fig.12 It is a schematic diagram of the cross-sectional structure of a fixing frame according to an embodiment of the present invention.

[0040] Reference numerals

[0041] 1. Absorption tower; 11. Tower body; 12. Slurry chamber; 13. Air inlet; 14. Exhaust port; 15. Liquid guide plate; 16. Processing chamber; 17. Liquid discharge port; 18. Clarifying chamber; 19. First baffle; 110. Liquid passage hole; 111. Blocking frame; 112. First connecting pipe; 113. First circulation pump; 114. Filler; 115. First baffle; 116. Second baffle;

[0042] 2. Spraying mechanism; 21. Slurry cylinder; 22. Second connecting pipe; 23. Second circulating pump; 24. Third connecting pipe; 25. Water storage chamber; 26. Transmission frame; 27. Connecting plate; 28. First gear; 29. ​​Second gear; 210. Third gear; 211. Rotating plate; 212. Mounting rod; 213. First support rod; 214. First nozzle; 215. Rotating rod; 216. Second support rod; 217. Water inlet pipe; 218. Spraying pipe; 219. Second nozzle; 220. Fixed gear ring; 221. Transmission gear; 222. Driving gear; 223. First rotating shaft; 224. Motor; 22 5. First transmission rod; 226. First slider; 227. First connecting shaft; 228. Sliding seat; 229. First slide groove; 230. Second slide groove; 231. Second slider; 232. Second connecting shaft; 233. Second transmission rod; 234. Second rotating shaft; 235. First bevel gear; 236. Second bevel gear; 237. First stirring shaft; 238. Stirring rod; 239. Fourth gear; 240. First intermediate gear; 241. Second intermediate gear; 242. Fifth gear; 243. Second stirring shaft; 244. Guide block; 245. Guide groove; 246. Fixed plate; 247. Protective cover;

[0043] 3. Waste heat recovery mechanism; 31. Water tank; 32. Fourth connecting pipe; 33. Third circulation pump; 34. Fixed frame; 35. First branch pipe; 36. Second branch pipe; 37. Second partition plate; 38. First water chamber; 39. Second water chamber; 310. First water inlet; 311. First water outlet; 312. Second water inlet; 313. Heat exchanger; 314. Fifth connecting pipe; 315. Sixth connecting pipe. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0045] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] Example

[0047] like Figure 1 , Figure 2 As shown. A slurry treatment device for a thermal power plant includes a recovery mechanism arranged at the bottom of an absorption tower 1, and the recovery mechanism is used to recycle the slurry to improve the slurry recycling effect. A spray mechanism 2 is arranged inside the tower body 11 of the absorption tower 1, and the spray mechanism 2 includes an upper spray structure and a lower spray structure, and the recovery mechanism is connected to the upper spray structure. The upper spray structure is used to spray slurry to absorb and treat the exhaust gas, and the lower spray structure is used to pre-treat the exhaust gas, cool the exhaust gas, remove solid particles in the exhaust gas, and replenish the slurry into the tower body 11. A filler 114 is arranged between the upper spray structure and the lower spray structure. The filler 114 adopts an existing structure to make the slurry fully contact with the exhaust gas and improve the exhaust gas absorption rate. A stirring structure for stirring the flue gas is arranged between the filler 114 and the lower spray structure. The turbulence degree of the flue gas is increased by the stirring structure, so that the flue gas can be more fully in contact with the slurry, and the absorption effect of the slurry on the flue gas is improved. The outside of the tower body 11 is provided with a power structure for driving the stirring structure and the lower spraying structure to rotate.

[0048] The recovery mechanism includes a slurry chamber 12 arranged at the bottom of the tower body 11, and a liquid guide plate 15 having a guiding effect on the slurry is arranged at the bottom end of the tower body 11, and the liquid guide plate 15 is fixedly connected to the inner wall of the tower body 11. A first partition 19 is arranged inside the slurry chamber 12, and the first partition 19 is fixedly connected to the liquid guide plate 15, and the first partition 19 is fixed on the inner wall of the tower body 11. The first partition 19 divides the slurry chamber 12 into a relatively independent treatment chamber 16 and a clarification chamber 18. The first partition 19 is provided with a liquid hole 110 that connects the clarification chamber 18 with the treatment chamber 16. The liquid guide plate 15 guides the slurry into the treatment chamber 16, and the slurry after absorbing the exhaust gas is crystallized and precipitated in the treatment chamber 16. A drain port 17 is arranged at the bottom of the treatment chamber 16, and a valve is arranged at the drain port 17, and the drain port 17 is used to discharge the crystallized precipitate out of the treatment chamber 16.

[0049] like Figure 3 As shown. A blocking frame 111 is provided at the upper part of the clarification chamber 18, and the blocking frame 111 is located above the liquid passage hole 110. The blocking frame 111 is fixedly provided on the inner wall of the clarification chamber 18, and the blocking frame 111 is fixedly connected to the first partition plate 19. The blocking frame 111 is a structure with openings at both ends, and a plurality of blocking units distributed in a linear array are provided inside the blocking frame 111, and a flow passage is formed between adjacent blocking units. The blocking unit includes a first baffle 115 and a second baffle 116, and the first baffle 115 is located above the second baffle 116, and the first baffle 115 overlaps the second baffle 116. The first baffle 115 and the second baffle 116 are L-shaped plate structures with opposite bending directions. A flow space for slurry is provided between the first baffle 115 and the second baffle 116. The bottom ends of the first baffle 115 and the second baffle 116 are both conical structures. When the slurry passes through the first baffle 115 and the second baffle 116, the first baffle 115 and the second baffle 116 block the solid particles in the slurry, reducing the content of crystal precipitation in the recovered slurry. The bottom of the clarification chamber 18 can also be provided with a discharge port to discharge the sediment in the clarification chamber 18.

[0050] The clarification chamber 18 is connected to the upper spray structure through the first connecting pipe 112, and the liquid inlet end of the first connecting pipe 112 is located above the blocking frame 111. The first connecting pipe 112 is provided with a first circulation pump 113 and a valve, and the first circulation pump 113 provides power for the circulation of the slurry. The valve is used to control the opening and closing of the first connecting pipe 112.

[0051] like Figure 4 , Figure 5 , Figure 6As shown. The lower spray structure includes a transmission frame 26, which is located in the tower body 11 and is sealed and rotatably connected to the tower body 11. An annular limit groove is provided on the inner wall of the tower body 11, and the transmission frame 26 is located in the limit groove and is rotatably connected to the limit groove through a bearing. A sealing gasket is provided between the limit groove and the transmission frame 26 to ensure sealing. A water storage chamber 25 is provided at the center of the transmission frame 26, and the water storage chamber 25 is fixedly connected to the transmission frame 26 through a connecting plate 27. The water inlet end of the water storage chamber 25 is connected to the third connecting pipe 24 through a rotating joint, and the third connecting pipe 24 is sealed and connected to the inner wall of the tower body 11. The third connecting pipe 24 is connected to the slurry barrel 21 through the second connecting pipe 22, and the second circulating pump 23 is provided on the second connecting pipe 22, and a valve is provided on the third connecting pipe 24. The slurry barrel 21 is filled with absorbent slurry as needed, and the absorbent slurry can be limestone slurry. A rotating rod 215 is fixedly arranged below the water storage chamber 25, and a plurality of second supporting rods 216 are fixedly arranged on the rotating rod 215, and a first nozzle 214 is fixedly arranged on the second supporting rod 216. The first nozzles 214 on adjacent second supporting rods 216 are staggered to improve the spraying uniformity of the slurry. The inner cavity of the second branch pipe 36 is connected to the water storage chamber 25 through the inner cavity of the rotating rod 215, and the slurry in the water storage chamber 25 enters the second supporting rod 216 through the rotating rod 215, and then is sprayed out by the first nozzle 214.

[0052] A spray assembly is provided on the connecting plate 27. In the present embodiment, four connecting plates 27 are provided, and a spray assembly is provided on each connecting plate 27. The spray assembly includes a mounting rod 212, on which a plurality of first support rods 213 are fixedly provided, and on which a first nozzle 214 is fixedly provided. The first nozzles 214 on adjacent first support rods 213 are staggered. A rotating plate 211 is fixedly provided at the top end of the mounting rod 212, and one end of the rotating plate 211 is fixed on the axle of the third gear 210. The third gear 210 is rotatably connected to the connecting plate 27 via a bearing. A second gear 29 is rotatably provided on the connecting plate 27 via a bearing, and the second gear 29 meshes with the third gear 210. A first gear 28 is fixedly provided on the axle of the second gear 29, and the first gear 28 meshes with a fixed gear ring 220 fixedly provided on the inner wall of the tower body 11. The inner cavity of the second support rod 216 is connected with the inner cavity of the mounting rod 212, and the inner cavity of the mounting rod 212 is connected with the inner cavity of the connecting plate 27 through the inner cavity of the rotating plate 211 and the inner cavity of the axle of the third gear 210, and the inner cavity of the connecting plate 27 is connected with the water storage chamber 25. The slurry in the water storage chamber 25 enters the inner part of the axle of the third gear 210 through the connecting plate 27, then enters the inner part of the mounting rod 212 through the rotating plate 211, and then is sprayed out from the first nozzle 214 through the first support rod 213.

[0053] like Figure 7 , Figure 8As shown. The stirring structure includes a first stirring shaft 237, and the first stirring shaft 237 is connected to the inner wall of the tower body 11 through a bearing and a sealing gasket for sealing and rotation. One end of the first stirring shaft 237 extending out of the tower body 11 is connected to the transmission structure. A plurality of stirring rods 238 are fixedly arranged on a section of the first stirring shaft 237 located inside the tower body 11. A stirring assembly is respectively arranged on both sides of the first stirring shaft 237. The stirring assembly includes a second stirring shaft 243, and both ends of the second stirring shaft 243 are connected to the inner wall of the tower body 11 through a bearing and a sealing gasket for sealing and rotation. A plurality of stirring rods 238 are fixedly arranged on the second stirring shaft 243, and the stirring rods 238 on the first stirring shaft 237 and the second stirring shaft 243 are staggered. A fifth gear 242 is fixedly arranged on one end of the second stirring shaft 243 extending out of the tower body 11, and the fifth gear 242 is meshed with a fourth gear 239 fixedly arranged on the first stirring shaft 237 through a first intermediate gear 240 and a second intermediate gear 241. The first intermediate gear 240 and the second intermediate gear 241 are both rotatably connected to the tower body 11 through bearings. The first stirring shaft 237 drives the second stirring shaft 243 to rotate through the fourth gear 239, the first intermediate gear 240, the second intermediate gear 241 and the fifth gear 242, so that the first stirring shaft 237 rotates in opposite directions to the second stirring shaft 243, thereby improving the stirring effect on the exhaust gas, improving the turbulence of the exhaust gas, and thus improving the adequacy of the contact between the exhaust gas and the slurry, and improving the absorption effect of the slurry on the exhaust gas.

[0054] like Fig. 9 As shown. The power structure includes a slide 228, and the slide 228 is arranged outside the tower body 11. A protective cover 247 is arranged outside the slide 228, and the protective cover 247 is fixed on the outer wall of the tower body 11. A guide groove 245 that has a guiding effect on the horizontal sliding of the slide 228 is fixed on the protective cover 247, and guide blocks 244 that are adapted to the guide groove 245 are fixed on both sides of the slide 228. The guide blocks 244 are located in the guide groove 245 and are slidably connected to the guide groove 245. A first slider 226 and a second slider 231 are slidably arranged inside the slide 228, and the first slider 226 and the second slider 231 are staggered. The slide 228 is provided with a first slide groove 229 and a second slide groove 230 that respectively guide the sliding of the first slider 226 and the second slider 231, and the first slide groove 229 and the second slide groove 230 are arranged in parallel. The first slider 226 is located in the first slide groove 229 and is slidably connected to the first slide groove 229, and the second slider 231 is located in the second slide groove 230 and is slidably connected to the second slide groove 230. The first slider 226 can only slide along the first slide groove 229 under the restriction of the first slide groove 229, and the second slider 231 can only slide along the second slide groove 230 under the restriction of the second slide groove 230.

[0055] The first slider 226 is connected to the first transmission rod 225 through the first connecting shaft 227, and the first connecting shaft 227 is rotatably connected to the first slider 226 and the first transmission rod 225. The first transmission rod 225 is fixed on the first rotating shaft 223, and the first rotating shaft 223 is rotatably connected to the protective cover 247 through a bearing. The protective cover 247 is provided with a motor 224 that drives the first rotating shaft 223 to rotate. A driving gear 222 is fixedly provided on the first rotating shaft 223, and the driving gear 222 is meshed with a gear ring fixedly provided on the side of the transmission frame 26 through a transmission gear 221. The transmission gear 221 is rotatably connected to the tower body 11 through a bearing seat, and a avoidance hole is provided on the tower body 11 for the transmission gear 221 to pass through.

[0056] The second slider 231 is connected to the second transmission rod 233 through the second connecting shaft 232, and the second connecting shaft 232 is rotatably connected to the second slider 231 and the second transmission rod 233. The length of the second transmission rod 233 is greater than the length of the first transmission rod 225. The second transmission rod 233 is fixed on the second rotating shaft 234, and the second rotating shaft 234 is coaxial with the first rotating shaft 223. A first bevel gear 235 is fixedly provided at one end of the second rotating shaft 234, and the first bevel gear 235 is meshed with a second bevel gear 236 fixedly provided at the end of the first stirring shaft 237. A fixed plate 246 for supporting the second rotating shaft 234 is fixedly provided inside the protective cover 247, and the second rotating shaft 234 is rotatably connected to the fixed plate 246. Under the action of the fixed plate 246, the second rotating shaft 234 is prevented from being displaced, so that the second rotating shaft 234 can only rotate.

[0057] like Fig.10 As shown. The upper spray structure includes a water inlet pipe 217, and the arc-shaped water inlet pipe 217 is fixed on the inner wall of the tower body 11. The water inlet pipe 217 is connected to the second connecting pipe 22, and a valve is provided on the second connecting pipe 22. A plurality of parallel spray pipes 218 are provided on the water inlet pipe 217, and a second nozzle 219 for spraying downward is provided on the spray pipe 218. The slurry in the slurry barrel 21 enters the water inlet pipe 217 through the second connecting pipe 22 under the action of the second circulation pump 23, and then sprays downward through the spray pipe 218 and the second nozzle 219. When the slurry in the slurry chamber 12 cannot meet the recycling requirements, the slurry in the slurry barrel 21 provides slurry for the upper spray structure.

[0058] like Fig.11 , Fig.12As shown. A waste heat recovery mechanism 3 is arranged inside the tower body 11, and the waste heat recovery mechanism 3 is arranged above the upper spray structure. The waste heat recovery mechanism 3 includes a fixed frame 34, and the fixed frame 34 is fixed on the inner wall of the tower body 11. A second partition 37 is fixedly arranged inside the fixed frame 34, and the second partition 37 divides the fixed frame 34 into a closed first water chamber 38 and a second water chamber 39. A first baffle 115 is fixedly arranged inside the first water chamber 38, which divides the first water chamber 38 into a semi-circular first water inlet chamber and a first water outlet chamber. The first water inlet chamber and the first water outlet chamber are connected through a plurality of first branch pipes 35 arranged in parallel. A first water inlet 310 is arranged on the first water inlet chamber, and the first water inlet 310 is connected to the water tank 31 through a fourth connecting pipe 32. A third circulating pump 33 is arranged on the fourth connecting pipe 32. A first water outlet 311 is arranged on the first water outlet chamber, and the first water outlet 311 is connected to the heat exchanger 313 through a fifth connecting pipe 314. The heat exchanger 313 may adopt an existing structure as required. The heat exchanger 313 is connected to the water tank 31 through the sixth connecting pipe 315 to return water to the water tank 31 .

[0059] A second baffle 116 is fixedly disposed inside the second water chamber 39 to divide the second water chamber 39 into a second water inlet chamber and a second water outlet chamber. The second water inlet chamber and the second water outlet chamber are connected through a plurality of second branch pipes 36 disposed in parallel, and the second branch pipes 36 are disposed perpendicularly to the first branch pipe 35. A plurality of passages for the exhaust gas to pass through are formed between the first branch pipe 35 and the second branch pipe 36 to improve the heat exchange effect. A second water inlet 312 is disposed on the second water inlet chamber, and a second water outlet is disposed on the first water outlet chamber. The second water inlet 312 is connected to the fourth connecting pipe 32, and the second water outlet is connected to the fifth connecting pipe 314.

[0060] The slurry treatment method based on the above-mentioned slurry treatment device of the thermal power plant comprises the following steps:

[0061] S1. Exhaust gas enters the tower body 11 through the air inlet 13. The second circulating pump 23 delivers the slurry in the slurry barrel 21 into the water storage chamber 25 through the second connecting pipe 22 and the third connecting pipe 24. The water in the water storage chamber 25 is sprayed out from the first nozzle 214 through the rotating rod 215 and the second support rod 216. The water in the water storage chamber 25 enters the mounting rod 212 through the connecting plate 27, the axle of the third gear 210, and the rotating plate 211. Then the first support rod 213 is sprayed out from the first nozzle 214. The slurry sprayed from the first nozzle 214 performs preliminary cooling and absorption treatment on the exhaust gas.

[0062] S2, the first motor 224 drives the driving gear 222 to rotate through the first rotating shaft 223, the driving gear 222 drives the transmission frame 26 to rotate through the transmission gear 221 and the gear ring, the transmission frame 26 drives the water storage chamber 25 to rotate through the connecting plate 27, the water storage chamber 25 drives the rotating rod 215 and the second support rod 216 to rotate synchronously, the second support rod 216 drives the first nozzle 214 to rotate, and the slurry is sprayed in rotation to improve the spraying effect. The connecting plate 27 drives the first gear 28 to rotate synchronously, the first gear 28 rotates under the action of the fixed gear ring 220, the first gear 28 drives the second gear 29 to rotate synchronously, the second gear 29 drives the rotating plate 211 to rotate through the third gear 210, the rotating plate 211 drives the mounting rod 212 and the first support rod 213 to rotate around the axle of the third gear 210, and the first support rod 213 drives the first nozzle 214 to spray the slurry in rotation. During the rotation process, the first support rod 213 and the second support rod 216 not only improve the spraying uniformity of the slurry, but also have a stirring effect on the exhaust gas, increase the turbulence of the exhaust gas, make the exhaust gas fully contact with the slurry, and improve the pretreatment effect of the slurry on the exhaust gas.

[0063] S3, the first rotating shaft 223 drives the first transmission rod 225 to rotate, the first transmission rod 225 drives the first slider 226 to rotate through the first connecting shaft 227, the first slider 226 drives the slide 228 to slide through the first slide groove 229, the slide 228 slides horizontally under the limiting action of the guide groove 245, the first slider 226 slides along the first slide groove 229; the slide 228 drives the second slider 231 to slide along the second slide groove 230 through the second slide groove 230, the second slider 231 drives the second transmission rod 233 to rotate through the second connecting shaft 232, due to the second transmission rod 233 The length is greater than that of the first transmission rod 225, so the second transmission rod 233 swings back and forth, the second transmission rod 233 drives the second rotating shaft 234 to rotate back and forth, the second rotating shaft 234 drives the first stirring shaft 237 to rotate back and forth through the first bevel gear 235 and the second bevel gear 236, the first stirring shaft 237 drives the second stirring shaft 243 to rotate back and forth through the fourth gear 239, the first intermediate gear 240, the second intermediate gear 241, and the fifth gear 242, the first stirring shaft 237 and the second stirring shaft 243 drive the stirring rod 238 to rotate back and forth to stir the exhaust gas.

[0064] S4. The slurry in the slurry barrel 21 is sent into the water inlet pipe 217 through the second connecting pipe 22 under the action of the second circulation pump 23. The water inlet pipe 217 sprays the slurry downward through the spray pipe 218 and the second nozzle 219. The turbulent exhaust gas stirred by the stirring rod 238 moves upward, and the exhaust gas contacts the slurry sprayed from the spray pipe 218 in the filler 114, and absorbs the exhaust gas.

[0065] S5. The water in the water tank 31 enters the first branch pipe 35 and the second branch pipe 36 through the fourth connecting pipe 32 under the action of the third circulating pump 33. The waste gas after being absorbed by the slurry moves upward, and the waste gas flows through the channel surrounded by the first branch pipe 35 and the second branch pipe 36. The waste gas exchanges heat with the water in the first branch pipe 35 and the second branch pipe 36. The water after heat exchange enters the heat exchanger 313 through the fifth connecting pipe 314 for heat exchange, and the water after heat exchange returns to the water tank 31 through the sixth connecting pipe 315. The waste gas after heat exchange is discharged through the exhaust port 14 at the top of the tower body 11.

[0066] S6. The slurry after absorbing the exhaust gas flows into the treatment chamber 16 through the liquid guide plate 15, and crystallization and precipitation are carried out in the treatment chamber 16. The slurry above the treatment chamber 16 enters the clarification chamber 18 through the liquid hole 110, and the slurry is further precipitated in the clarification chamber 18. The slurry moves upward through the blocking frame 111, and the first baffle 115 and the second baffle 116 inside the blocking frame 111 block the solid particles. The slurry above the blocking frame 111 is sent into the water inlet pipe 217 through the first connecting pipe 112 and the second connecting pipe 22 under the action of the first circulation pump 113, and the slurry is sprayed downward through the spray pipe 218 and the second nozzle 219 to realize the recycling of the slurry.

[0067] Therefore, by using the thermal power plant slurry treatment device and slurry treatment method of the present invention, the slurry can be recycled and utilized, thereby improving the absorption and desulfurization effect of the slurry on the waste gas.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A slurry treatment device for a thermal power plant, characterized in that: The invention comprises a recovery mechanism arranged at the bottom of the absorption tower, a spray mechanism is arranged inside the tower body of the absorption tower, the spray mechanism comprises an upper spray structure and a lower spray structure, the recovery mechanism is connected with the upper spray structure, a filler is arranged between the upper spray structure and the lower spray structure, a stirring structure for stirring the flue gas is arranged between the filler and the lower spray structure, and a power structure for driving the stirring structure and the lower spray structure to rotate is arranged outside the tower body.

2. The slurry treatment device for a thermal power plant according to claim 1, characterized in that: The recovery mechanism includes a slurry chamber arranged at the bottom of a tower body, a liquid guide plate having a guiding effect on the slurry is arranged at the bottom end of the tower body, a first partition is arranged inside the slurry chamber, the first partition is connected to the liquid guide plate, the first partition divides the slurry chamber into a treatment chamber and a clarification chamber, a liquid passage hole connecting the clarification chamber with the treatment chamber is arranged on the first partition, the liquid guide plate guides the slurry into the treatment chamber, a liquid discharge port is arranged at the bottom of the treatment chamber, a blocking frame is arranged on the upper part of the clarification chamber, the blocking frame is located above the liquid passage hole, the clarification chamber is connected to the upper spray structure through a first connecting pipe, the liquid inlet end of the first connecting pipe is located above the blocking frame, and a first circulation pump and a valve are arranged on the first connecting pipe.

3. The slurry treatment device for a thermal power plant according to claim 2, characterized in that: The blocking frame is fixedly arranged on the inner wall of the clarification chamber, the blocking frame is fixedly connected to the first partition, the blocking frame is a structure with openings at both ends, a plurality of blocking units distributed in a linear array are arranged inside the blocking frame, and a flow channel is formed between adjacent blocking units; the blocking unit includes a first baffle and a second baffle, the first baffle is located above the second baffle, the first baffle is overlapped with the second baffle, the first baffle and the second baffle are L-shaped plate structures with opposite bending directions, a flow space for slurry is arranged between the first baffle and the second baffle, and the bottom ends of the first baffle and the second baffle are both conical structures.

4. The slurry treatment device for a thermal power plant according to claim 3, characterized in that: The lower spray structure includes a transmission frame, which is located in the tower body and is sealed and rotatably connected to the tower body. A water storage chamber is arranged at the center of the transmission frame, which is connected to the transmission frame through a connecting plate. The water inlet end of the water storage chamber is connected to the third connecting pipe through a rotating joint, and the third connecting pipe is connected to the slurry cylinder through a second connecting pipe. A second circulating pump is arranged on the second connecting pipe, and a valve is arranged on the third connecting pipe. A rotating rod is arranged below the water storage chamber, and a plurality of second support rods are arranged on the rotating rod. The second support rod is arranged with a first nozzle, and the internal cavity of the second branch pipe is connected to the water storage chamber through the internal cavity of the rotating rod; and a spraying assembly is arranged on the connecting plate.

5. The slurry treatment device for a thermal power plant according to claim 4, characterized in that: The spray assembly includes a mounting rod, a plurality of first support rods are arranged on the mounting rod, a first nozzle is arranged on the first support rod, and the first nozzles on adjacent first support rods are staggered. A rotating plate is arranged on the top of the mounting rod, one end of the rotating plate is fixed on the axle of the third gear, the third gear is rotatably connected to the connecting plate, a second gear is rotatably arranged on the connecting plate, the second gear is meshed with the third gear, a first gear is arranged on the axle of the second gear, the first gear is meshed with a fixed gear ring fixedly arranged on the inner wall of the tower body, the internal cavity of the second support rod is communicated with the internal cavity of the mounting rod, the internal cavity of the mounting rod is communicated with the internal cavity of the connecting plate through the internal cavity of the rotating plate and the internal cavity of the axle of the third gear, and the internal cavity of the connecting plate is communicated with the water storage cavity.

6. The slurry treatment device for a thermal power plant according to claim 5, characterized in that: The stirring structure includes a first stirring shaft, which is rotatably connected to the inner wall of the tower body. One end of the first stirring shaft extending out of the tower body is connected to the transmission structure. A section of the first stirring shaft located inside the tower body is provided with a plurality of stirring rods. Stirring components are respectively provided on both sides of the first stirring shaft. The stirring component includes a second stirring shaft. Both ends of the second stirring shaft are rotatably connected to the inner wall of the tower body. The second stirring shaft is provided with a plurality of stirring rods. The stirring rods on the first stirring shaft and the second stirring shaft are staggered. A fifth gear is provided at one end of the second stirring shaft extending out of the tower body. The fifth gear is meshed with a fourth gear provided on the first stirring shaft through a first intermediate gear and a second intermediate gear. Both the first intermediate gear and the second intermediate gear are rotatably connected to the tower body.

7. The slurry treatment device for a thermal power plant according to claim 6, characterized in that: The power structure includes a slide seat, which is arranged on the outside of the tower body, and a protective cover is arranged on the outside of the slide seat, and the protective cover is fixed on the outer wall of the tower body. A guide groove with a guiding effect on the horizontal sliding of the slide seat is arranged on the protective cover, and guide blocks adapted to the guide groove are arranged on both sides of the slide seat, and the guide blocks are located in the guide groove and are slidably connected to the guide groove. The slide seat is provided with a first slider and a second slider for sliding inside, and the first slider and the second slider are staggered. The slide seat is provided with a first slider and a second slider, which respectively guide the sliding of the first slider and the second slider, and the first slider and the second slider are arranged in parallel. The first slider is located in the first slider and is slidably connected to the first slider, and the second slider is located in the second slider and is slidably connected to the second slider. The first slider is connected to the first transmission rod through a first connecting shaft, and the first connecting shaft is rotatably connected to the first slider and the first transmission rod. The first transmission rod is fixed on the first rotating shaft, the first rotating shaft is rotatably connected with the protective cover, the protective cover is provided with a motor that drives the first rotating shaft to rotate, the first rotating shaft is provided with a driving gear, the driving gear is meshed with the gear ring provided on the side of the transmission frame through the transmission gear, the transmission gear is rotatably connected with the tower body, and the tower body is provided with an avoidance hole for the transmission gear to pass through, the second slider is connected with the second transmission rod through the second connecting shaft, the length of the second transmission rod is greater than the length of the first transmission rod, the second connecting shaft is rotatably connected with the second slider and the second transmission rod, the second transmission rod is fixed on the second rotating shaft, the second rotating shaft is coaxial with the first rotating shaft, a first bevel gear is provided at one end of the second rotating shaft, the first bevel gear is meshed with the second bevel gear provided at the end of the first stirring shaft, a fixing plate for supporting the second rotating shaft is provided inside the protective cover, and the second rotating shaft is rotatably connected with the fixing plate.

8. The slurry treatment device for a thermal power plant according to claim 7, characterized in that: The upper spray structure includes a water inlet pipe, the arc-shaped water inlet pipe is fixed on the inner wall of the tower body, the water inlet pipe is connected to the second connecting pipe, the second connecting pipe is provided with a valve, the water inlet pipe is provided with a plurality of parallel spray pipes, and the spray pipe is provided with a second nozzle for spraying downwards.

9. The slurry treatment device for a thermal power plant according to claim 8, characterized in that: The tower body is provided with a waste heat recovery mechanism inside, and the waste heat recovery mechanism is arranged above the upper spray structure; the waste heat recovery mechanism includes a fixed frame, the fixed frame is fixed on the inner wall of the tower body, a second partition is arranged inside the fixed frame, the second partition divides the fixed frame into a first water chamber and a second water chamber, the first water chamber is provided with a first baffle that divides the first water chamber into a first water inlet chamber and a first water outlet chamber, the first water inlet chamber is connected to the first water outlet chamber through a plurality of first branch pipes arranged in parallel, the first water inlet chamber is provided with a first water inlet, the first water outlet chamber is provided with a first water outlet, and the first water inlet It is connected to the water tank through a fourth connecting pipe, a third circulating pump is provided on the fourth connecting pipe, the first water outlet is connected to the heat exchanger through a fifth connecting pipe, and the heat exchanger is connected to the water tank through a sixth connecting pipe; a second baffle is provided inside the second water chamber to divide the second water chamber into a second water inlet chamber and a second water outlet chamber, the second water inlet chamber and the second water outlet chamber are connected through a plurality of second branch pipes arranged in parallel, the second branch pipe is arranged perpendicular to the first branch pipe, a second water inlet is provided on the second water inlet chamber, a second water outlet is provided on the first water outlet chamber, the second water inlet is connected to the fourth connecting pipe, and the second water outlet is connected to the fifth connecting pipe.

10. The slurry treatment method based on the slurry treatment device of a thermal power plant according to claim 9, characterized in that: The following steps are involved: S1. Exhaust gas enters the tower body through the air inlet, and the second circulating pump sends the slurry in the slurry barrel into the water storage chamber through the second connecting pipe and the third connecting pipe. The water in the water storage chamber is sprayed out from the first nozzle through the rotating rod and the second support rod. The water in the water storage chamber enters the mounting rod through the connecting plate, the third gear axle, and the rotating plate, and then the first support rod is sprayed out from the first nozzle. The slurry sprayed from the first nozzle performs preliminary cooling and absorption treatment on the exhaust gas; S2, the first motor drives the driving gear to rotate through the first rotating shaft, the driving gear drives the transmission frame to rotate through the transmission gear and the gear ring, the transmission frame drives the water storage chamber to rotate through the connecting plate, the water storage chamber drives the rotating rod and the second support rod to rotate synchronously, the second support rod drives the first nozzle to rotate, and the slurry is rotated and sprayed; the connecting plate drives the first gear to rotate synchronously, the first gear rotates under the action of the fixed gear ring, the first gear drives the second gear to rotate synchronously, the second gear drives the rotating plate to rotate through the third gear, the rotating plate drives the mounting rod and the first support rod to rotate around the axle of the third gear, and the first support rod drives the first nozzle to rotate and spray the slurry; S3, the first rotating shaft drives the first transmission rod to rotate, the first transmission rod drives the first slider to rotate through the first connecting shaft, the first slider drives the slide seat to slide through the first slide groove, the slide seat slides horizontally under the limiting action of the guide groove, and the first slider slides along the first slide groove; the slide seat drives the second slider to slide along the second slide groove through the second slide groove, the second slider drives the second transmission rod to rotate through the second connecting shaft, the length of the second transmission rod is greater than the length of the first transmission rod, the second transmission rod swings back and forth, the second transmission rod drives the second rotating shaft to rotate back and forth, the second rotating shaft drives the first stirring shaft to rotate back and forth through the first bevel gear and the second bevel gear, the first stirring shaft drives the second stirring shaft to rotate back and forth through the fourth gear, the first intermediate gear, the second intermediate gear, and the fifth gear, the first stirring shaft and the second stirring shaft drive the stirring rod to rotate back and forth to stir the exhaust gas; S4. The slurry in the slurry cylinder is sent into the water inlet pipe through the second connecting pipe under the action of the second circulation pump. The water inlet pipe sprays the slurry downward through the spray pipe and the second nozzle. The turbulent exhaust gas stirred by the stirring rod moves upward. The exhaust gas contacts the slurry sprayed from the spray pipe in the filler, and absorbs the exhaust gas. S5, the water in the water tank enters the first branch pipe and the second branch pipe through the fourth connecting pipe under the action of the third circulating pump, the waste gas after being absorbed by the slurry moves upward, the waste gas flows through the channel surrounded by the first branch pipe and the second branch pipe, the waste gas exchanges heat with the water in the first branch pipe and the second branch pipe, the water after heat exchange enters the heat exchanger through the fifth connecting pipe for heat exchange, and the water after heat exchange returns to the water tank through the sixth connecting pipe; S6. The slurry after absorbing the exhaust gas flows into the treatment chamber through the liquid guide plate, and crystallization and precipitation are carried out in the treatment chamber. The slurry above the treatment chamber enters the clarification chamber through the liquid hole, and the slurry is further precipitated in the clarification chamber. The slurry moves upward through the blocking frame, and the first baffle and the second baffle inside the blocking frame block the solid particles. The slurry above the blocking frame is sent into the water inlet pipe through the first connecting pipe and the second connecting pipe under the action of the first circulation pump, and the slurry is sprayed downward through the spray pipe and the second nozzle.

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