A reaction device for CO2 capture

Abstract

The application relates to the technical field of CO2 capture, and discloses a reaction equipment for CO2 capture, which comprises a capture absorption tower, a compression impurity filtering and oxygen removing mechanism, a waste gas purification mechanism and a circulating cooling mechanism. The capture absorption tower is connected with a waste gas conveying pipe on one side. The compression impurity filtering and oxygen removing mechanism is arranged on one side of the capture absorption tower and comprises a pretreatment tower, and the pretreatment tower is connected with the waste gas conveying pipe on one side. Through the arrangement of the compression impurity filtering and oxygen removing mechanism and the waste gas purification mechanism, the dust, nitrogen oxides, sulfur oxides and other impurities contained in the CO2 capture waste gas can be purified, meanwhile, the CO2 capture waste gas can be cooled and temperature-reduced, the adverse effects of the impurities and the temperature contained in the CO2 capture waste gas on the subsequent CO2 absorption process are reduced, the CO2 absorption effect of the subsequent CO2 capture absorption tower is remarkably improved, and the operation cost of the CO2 capture absorption tower is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of CO2 capture technology, specifically relating to a reaction device for CO2 capture. Background Technology

[0002] In modern life, coal and gas combustion are important ways to provide energy for people's daily lives. However, the process of burning coal or gas will release various air pollutants that are harmful to human health and the environment. Among them, CO2 is one of the main greenhouse gases that cause global climate change. Therefore, it is necessary to treat the gases emitted during the process of burning coal or gas in an environmentally friendly manner. CO2 capture technology is a technology that can recover and treat the gases emitted during the process of burning coal or gas.

[0003] CO2 capture technology, also known as carbon capture, refers to the process of separating carbon dioxide from gases such as power plant exhaust gas and industrial flue gas. Common CO2 capture technologies include chemical absorption, physical absorption, membrane separation, and cryogenic separation. Among them, chemical absorption is more widely used due to its mature technology and good CO2 capture effect.

[0004] Currently, common chemical absorption CO2 capture technologies mainly consist of several steps: waste gas pretreatment, CO2 absorption, CO2 regeneration, and storage and transportation. Common equipment used in the CO2 capture process includes a waste gas pretreatment system, an absorption tower, a regeneration tower, a solution reboiler, a filtration and recovery device, a water balance system, and other auxiliary equipment. During CO2 capture, the waste gas undergoes dust removal, desulfurization, and denitrification pretreatment through the waste gas pretreatment system. The pretreated waste gas is then transported to the absorption tower by an induced draft fan. In the absorption tower, the waste gas flows from bottom to top, and the absorbent sprayed at the top of the absorption tower adsorbs the waste gas transported at the bottom, forming a CO2-rich solution. This CO2-rich solution is then transported to the regeneration tower, where CO2 is regenerated by heating. The regenerated CO2 can then be recovered and reused by the storage and transportation equipment.

[0005] Although current environmental protection equipment commonly used in power plants and industrial waste gas applications can reduce dust, nitrogen oxides, sulfur oxides, and other components in the emitted waste gas, some pollutants still directly enter the CO2 capture and absorption tower during the actual CO2 capture process. Most existing CO2 capture and absorption towers do not have waste gas pretreatment functions, which increases the solvent consumption rate and reduces the CO2 capture and absorption effect during the use of the CO2 capture and absorption tower, thereby increasing the operating cost of the CO2 capture and absorption tower and reducing the CO2 absorption effect of the CO2 capture and absorption tower.

[0006] In view of this, the present invention is hereby proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a reaction device for CO2 capture, so as to solve the problems of high operating cost and poor CO2 absorption effect of the above-mentioned CO2 capture and absorption tower.

[0008] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0009] A CO2 capture reaction device includes: a capture absorption tower, a compression filtration and deoxygenation mechanism, a waste gas purification mechanism, and a circulating cooling mechanism.

[0010] One side of the capture and absorption tower is connected to a waste gas conveying pipe.

[0011] The compression filtration and deoxygenation mechanism is located on one side of the collection and absorption tower. The compression filtration and deoxygenation mechanism includes a pretreatment tower. A waste gas conveying pipe is connected to one side of the pretreatment tower. A pair of filter screens are provided inside the pretreatment tower. A deoxygenation layer is connected between the pair of filter screens. A filtration and deoxygenation chamber is formed between the filter screens and the pretreatment tower. A reciprocating compression and flow guiding mechanism is provided inside the filtration and deoxygenation chamber. The reciprocating compression and flow guiding mechanism is matched with the filter screens. A self-checking filtration mechanism is provided below the filter screens.

[0012] The exhaust gas purification mechanism is located inside the pretreatment tower and above the filter screen cylinder. The exhaust gas purification mechanism includes a flow guiding purification cone. The flow guiding purification cone is located on one side of the filter screen cylinder with multiple sets of evenly distributed spray nozzles. A pair of limiting nets is provided below the multiple sets of spray nozzles. A purification packing layer is filled between the pair of limiting nets. A wet curtain purification mechanism is provided on the outside of the multiple sets of spray nozzles.

[0013] The circulating cooling mechanism is located above the pretreatment tower. The circulating cooling mechanism includes a cooling guide tube, a cooling connecting pipe is provided inside the cooling guide tube, and a guiding gas supply pipe is connected between the cooling connecting pipe and the waste gas conveying pipe.

[0014] Furthermore, a flow guiding hole is provided on the side of the filter screen cylinder away from the exhaust gas conveying pipe. This facilitates the conveying and guiding of the exhaust gas after filtration and deoxygenation within the filter and deoxygenation chamber. A flow guiding and limiting plate is provided within the filter and deoxygenation chamber, and this plate matches the flow guiding hole. The flow guiding and limiting plate serves to limit and guide the exhaust gas conveyed within the filter and deoxygenation chamber.

[0015] Furthermore, a compression guide plate is provided inside the filter and deoxygenation chamber. The compression guide plate supports and fixes the guide sealing plate. Simultaneously, it facilitates the compression of the volume between the compression guide plate and the guide limiting plate by rotating within the filter and deoxygenation chamber as the drive gear rotates, thereby compressing the exhaust gas within the chamber. This compressed transport of the exhaust gas improves the filtration and deoxygenation efficiency of the filter screen and deoxygenation layer. A cleaning brush is connected to the side of the compression guide plate closest to the filter screen. The cleaning brush cleans the filter screen by rotating with the compression guide plate, reducing the likelihood of clogging during use.

[0016] The compression guide plate has T-shaped air guide holes. The T-shaped air guide holes, in conjunction with the guide sealing plate, provide unidirectional compression and transport of the exhaust gas within the impurity removal and deoxygenation chamber. A guide sealing plate is installed within the T-shaped air guide hole, and the guide sealing plate is hinged to the compression guide plate. The rotation of the guide sealing plate controls the unidirectional flow of the T-shaped air guide hole.

[0017] Furthermore, a drive gear is provided above the compression guide plate. The drive gear drives the drive connecting block to rotate. A drive connecting block is fixedly connected between the drive gear and the compression guide plate, and the drive connecting block connects the drive gear and the compression guide plate, so that the compression guide plate can rotate accordingly with the rotation of the drive gear under the action of the drive connecting block.

[0018] A transmission gear meshes with one side of the drive connecting block. The transmission gear transmits power to the reciprocating motor, allowing the drive gear to rotate in response to the rotation of the reciprocating motor. The reciprocating motor is connected to the transmission gear. The reciprocating motor provides power, enabling the rotational drive of the compression guide plate by controlling its operation.

[0019] Furthermore, the self-checking filtration mechanism includes a drive shaft, which is located inside the filter screen cylinder and passes through a pair of limiting nets. The drive shaft supports, limits, and drives the centrifugal filter cylinder, facilitating centrifugal filtration of the purified liquid stored in the storage tank. A guide vane is fixedly connected to the outside of the drive shaft, and the guide vane is matched with the exhaust gas delivery pipe and the guide delivery hole. The rotation of the guide vane, influenced by the exhaust gas flow, drives the rotation of the drive shaft.

[0020] Furthermore, a storage tank is located below the filter screen cylinder. This tank collects and stores the purified liquid from the pretreatment tower. A filling pipe is connected to one side of the storage tank, facilitating the addition of purified liquid to the tank and ensuring its purification effect. Multiple pH sensors are connected to the inner wall of the storage tank, allowing for the detection of the pH value of the purified liquid within the tank, thus ensuring the purification effect.

[0021] The storage tank is equipped with a centrifugal filter cartridge, which filters the used purified liquid dripping from the pretreatment tower. A fixing frame connects the centrifugal filter cartridge to the drive shaft. The fixing frame connects the drive shaft and the centrifugal filter cartridge, allowing the centrifugal filter cartridge to rotate synchronously with the drive shaft under the action of the fixing frame, thus facilitating centrifugal filtration of the used purified liquid.

[0022] Furthermore, a connecting frame is provided between the flow-guiding purification cone and the pretreatment tower, which supports and fixes the flow-guiding purification cone. Connecting pipes are provided between the multiple sets of spray nozzles, facilitating the delivery of purified liquid to the multiple sets of spray nozzles.

[0023] Both sides of the limiting net are fixedly connected to a fixing frame, with the side of the fixing frame away from the spray nozzle inclined. This facilitates the connection and fixation of the limiting net to the pretreatment tower via the fixing frame. Simultaneously, by tilting one side of the fixing frame, the purified liquid flowing along the cooling curtain can be transported to the limiting net under the action of the inclined surface, thereby reducing the possibility of purified liquid accumulating above the limiting net.

[0024] Furthermore, the evaporative cooling pad purification mechanism includes a purification delivery pipe positioned above multiple sets of spray nozzles. The purification delivery pipe connects and guides multiple flow-guiding nozzles. Multiple evenly distributed flow-guiding nozzles are connected to the side of the purification delivery pipe close to the limiting mesh. This facilitates the wetting of the evaporative cooling pad by delivering purification liquid through multiple flow-guiding nozzles, thereby facilitating auxiliary purification of the waste gas in the pretreatment tower. The evaporative cooling pad is connected below the flow-guiding nozzles and is fixedly connected to the fixed mesh frame. This facilitates the formation of a cylindrical evaporative cooling pad within the pretreatment tower by guiding the purification liquid through the evaporative cooling pad, thereby facilitating auxiliary purification and filtration of the waste gas in the pretreatment tower.

[0025] Furthermore, a purification connecting pipe is connected to one side of the purification delivery pipe. This facilitates the delivery of purified liquid into the purification delivery pipe via the purification connecting pipe. A guide pipe is connected to the end of the purification connecting pipe outside the pretreatment tower. The guide pipe connects the purification connecting pipe to the booster pump, allowing the pressurized purified liquid to be delivered along the guide pipe into the purification connecting pipe during the operation of the booster pump. The end of the guide pipe furthest from the purification connecting pipe is connected to the booster pump. The operation of the booster pump is controlled to pressurize and extract the purified liquid from the storage tank. A circulation connecting pipe is connected to the side of the booster pump closest to the pretreatment tower. The circulation connecting pipe connects the storage tank and the booster pump, facilitating the discharge of purified liquid from the storage tank.

[0026] Furthermore, a guide block is provided above the guide purification cone, and a guide cooling chamber is formed between the guide block and the guide purification cone. This facilitates the guiding treatment of the exhaust gas purified by the exhaust gas purification mechanism through the guide cooling chamber. The cooling connecting pipe is connected to the guide cooling chamber. The cooled exhaust gas is guided and transported through the cooling connecting pipe.

[0027] The guiding cooling chamber is equipped with heat exchange cooling pipes, which are arranged in a stepped manner. This facilitates the cooling of the exhaust gas within the guiding cooling chamber through the heat exchange cooling pipes, reducing the adverse effects of excessively high exhaust gas temperature on subsequent CO2 collection. Furthermore, the guiding purification cone has a return trough that matches the heat exchange cooling pipes. This facilitates the guiding and recovery of the cooled and liquefied purification liquid through the return trough.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] This invention, through the inclusion of a compression filtration and oxygen removal mechanism and an exhaust gas purification mechanism, can purify impurities such as dust, nitrogen oxides, and sulfur oxides contained in CO2 capture exhaust gas. Simultaneously, it can cool and reduce the temperature of the CO2 capture exhaust gas, thereby reducing the adverse effects of impurities and temperature on the subsequent CO2 absorption process. This significantly improves the CO2 absorption efficiency of the subsequent CO2 capture and absorption tower and greatly reduces the operating cost of the CO2 capture and absorption tower. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1This is a perspective view of a CO2 capture reaction device according to an embodiment of the present invention;

[0032] Figure 2 This is a front sectional view of a CO2 capture reaction device according to an embodiment of the present invention;

[0033] Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle;

[0034] Figure 4 for Figure 2 Schematic diagram of the structure at point B;

[0035] Figure 5 for Figure 2 Schematic diagram of the structure at point C;

[0036] Figure 6 for Figure 2 Schematic diagram of the structure at point D;

[0037] Figure 7 for Figure 2 Schematic diagram of the structure at point E in the middle;

[0038] Figure 8 for Figure 2 Schematic diagram of the structure at point F;

[0039] Figure 9 This is a top sectional view of a CO2 capture reaction device according to an embodiment of the present invention;

[0040] Figure 10 for Figure 9 Schematic diagram of the structure at point G.

[0041] In the diagram: 1-Capture and absorption tower, 101-Waste gas conveying pipe, 2-Compression, filtration, and deoxygenation mechanism, 201-Pretreatment tower, 202-Waste gas conveying pipe, 203-Filter screen cylinder, 204-Deoxygenation layer, 205-Flow guiding and conveying hole, 206-Flow guiding and limiting plate, 207-Compression guide plate, 208-Cleaning brush, 209-Guide sealing plate, 210-Drive gear, 211-Drive connecting block, 212-Transmission gear 213-Reciprocating motor, 214-Drive shaft, 215-Guide impeller, 216-Liquid storage tank, 217-Liquid filling pipe, 218-pH sensor, 219-Centrifugal filter cartridge, 220-Fixed frame, 3-Waste gas purification mechanism, 301-Flow guiding purification cone, 302-Spray nozzle, 303-Limiting net, 304-Purification packing layer, 305-Connecting frame, 306-Connecting guide pipe, 307-Fixed 308-Purification delivery pipe, 309-Guide nozzle, 310-Purification wet curtain, 311-Purification connecting pipe, 312-Guide pipe, 313-Boosting liquid pump, 314-Circulation connecting pipe, 4-Circulating cooling mechanism, 401-Cooling guide cylinder, 402-Cooling connecting pipe, 403-Guide gas supply pipe, 404-Gas block, 405-Heat exchange cooling pipe, 406-Return tank, 407-Coolant adding pipe, 408-Semiconductor refrigeration chip, 409-Coolant pump, 410-Coolant extraction pipe, 411-Coolant delivery pipe, 412-Temperature sensor, 413-First valve plate, 414-First valve shaft, 415-Return cooling pipe, 416-Transmission bevel gear, 417-Conduction motor, 418-Drive bevel gear, 419-Second valve shaft, 420-Second valve plate, 5-Drive control box. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0043] This invention discloses a reaction device for CO2 capture, referenced Figures 1-10 As shown, it includes a capture and absorption tower 1, a compression filtration and deoxygenation mechanism 2, a waste gas purification mechanism 3, a circulating cooling mechanism 4, and a drive control box 5.

[0044] refer to Figure 1 As shown, a waste gas delivery pipe 101 is connected to one side of the capture and absorption tower 1. This facilitates the addition of CO2-containing waste gas into the capture and absorption tower 1 through the waste gas delivery pipe 101.

[0045] refer to Figures 1-2As shown, the compression filtration and deoxygenation mechanism 2 is located on one side of the collection and absorption tower 1. By pretreating the exhaust gas through the compression filtration and deoxygenation mechanism 2, the impurities such as dust, nitrogen oxides, and sulfur oxides contained in the exhaust gas are prevented from adversely affecting the subsequent CO2 absorption process.

[0046] refer to Figure 1 As shown, the compression filtration and deoxygenation mechanism 2 includes a pretreatment tower 201, which provides pretreatment space for CO2 that needs to be pretreated. A waste gas delivery pipe 202 is connected to one side of the pretreatment tower 201, facilitating the delivery of CO2-containing waste gas into the pretreatment tower 201 via the waste gas delivery pipe 202.

[0047] refer to Figures 2-10 As shown, the pretreatment tower 201 is equipped with a pair of filter screen cylinders 203. This facilitates the filtration of dust and other impurities contained in the exhaust gas transported through the exhaust gas conveying pipe 202 via the pair of filter screen cylinders 203. Simultaneously, the pair of filter screen cylinders 203 also serve to clamp and fix the deoxidation layer 204.

[0048] refer to Figures 2-10 As shown, a deoxygenation layer 204 is connected between a pair of filter screen cylinders 203. The deoxygenation layer 204 absorbs the oxygen contained in the waste gas transported by the waste gas transport pipe 202, thereby reducing the adverse effects of oxygen on the subsequent CO2 absorption.

[0049] Specifically, a filter screen cylinder 203 and a pretreatment tower 201 form a filter and deoxygenation chamber. The filter and deoxygenation chamber serves to filter and deoxygenate the waste gas transported through the waste gas conveying pipe 202.

[0050] In addition, a flow guiding hole 205 is provided on the side of the filter screen cylinder 203 away from the exhaust gas conveying pipe 202. This facilitates the conveying and guiding of the exhaust gas after filtering and deoxygenating in the filter and deoxygenation chamber through the flow guiding hole 205.

[0051] refer to Figures 9-10 As shown, a flow guiding and limiting plate 206 is provided inside the filter and deaeration chamber, and the flow guiding and limiting plate 206 matches the flow guiding and conveying hole 205. The flow guiding and limiting plate 206 plays a role in limiting and guiding the exhaust gas conveyed in the filter and deaeration chamber.

[0052] Specifically, the impurity removal and deoxygenation chamber is equipped with a reciprocating compression and flow guiding mechanism, which is matched with the impurity filter screen cylinder 203.

[0053] refer to Figures 2-10As shown, the reciprocating compression and diversion mechanism includes a compression guide plate 207. The compression guide plate 207 supports and fixes the guide sealing plate 209. Simultaneously, the compression guide plate 207 rotates within the filter and deoxygenation chamber as the drive gear 210 rotates, compressing the volume between the compression guide plate 207 and the diversion limiting plate 206. This compresses the exhaust gas within the filter and deoxygenation chamber, improving the filtering and deoxygenation effect of the filter screen cylinder 203 and the deoxygenation layer 204 by compressing and transporting the exhaust gas.

[0054] refer to Figures 9-10 As shown, a cleaning brush 208 is connected to the side of the compression guide plate 207 close to the filter screen cylinder 203. The cleaning brush 208 cleans the filter screen cylinder 203 by rotating with the compression guide plate 207, reducing the possibility of impurities clogging the filter screen cylinder 203 during use.

[0055] Specifically, the compression guide plate 207 is provided with T-shaped air guide holes. The T-shaped air guide holes and the guide sealing plate 209 work together to unidirectionally compress and transport the exhaust gas in the filter and deoxygenation chamber.

[0056] refer to Figures 9-10 As shown, a guide sealing plate 209 is provided inside the T-shaped air guide hole, and the guide sealing plate 209 is hinged to the compression guide plate 207. The rotation of the guide sealing plate 209 plays a role in unidirectional flow control of the T-shaped air guide hole.

[0057] refer to Figures 2-3 As shown, a drive gear 210 is provided above the compression guide plate 207. The drive gear 210 drives the drive connecting block 211 to rotate.

[0058] Specifically, the drive gear 210 is rotatably connected to the fixed grid frame 307.

[0059] refer to Figures 2-3 As shown, a drive connecting block 211 is fixedly connected between the drive gear 210 and the compression guide plate 207. The drive connecting block 211 serves to connect the drive gear 210 and the compression guide plate 207, so that the compression guide plate 207 can rotate accordingly with the rotation of the drive gear 210 under the action of the drive connecting block 211.

[0060] refer to Figures 2-3As shown, a transmission gear 212 meshes with one side of the drive connecting block 211. The transmission gear 212 transmits power to the reciprocating motor 213, allowing the drive gear 210 to rotate accordingly with the reciprocating motor 213 under the action of the transmission gear 212. The reciprocating motor 213 is connected to the transmission gear 212. The reciprocating motor 213 provides power, allowing the compression guide plate 207 to be rotated by controlling the operation of the reciprocating motor 213.

[0061] refer to Figures 2-4 As shown, a self-checking filtration mechanism is provided below the filter screen cylinder 203. The self-checking filtration mechanism filters and stores the purification liquid dripping during the operation of the exhaust gas purification unit 3.

[0062] Specifically, an alkaline purification solution is selected to facilitate the adsorption and purification of nitrogen oxides and sulfur oxides contained in CO2.

[0063] refer to Figures 2-4 As shown, the self-checking filtration mechanism includes a drive shaft 214, which is located inside the filter screen cylinder 203 and passes through a pair of limiting nets 303. The drive shaft 214 supports, limits, and drives the centrifugal filter cylinder 219, thereby facilitating centrifugal filtration of the purified liquid stored in the liquid storage tank 216.

[0064] refer to Figure 2 As shown, a guide vane 215 is fixedly connected to the outer side of the drive shaft 214. The guide vane 215 is matched with the exhaust gas conveying pipe 202 and the guide conveying hole 205. The guide vane 215 rotates under the influence of the exhaust gas flow, thereby driving the drive shaft 214 to rotate.

[0065] refer to Figures 2-6 As shown, a liquid storage tank 216 is located below the filter screen cylinder 203. The liquid storage tank 216 is used to collect and store the purified liquid in the pretreatment tower 201. A liquid addition pipe 217 is connected to one side of the liquid storage tank 216, which facilitates the addition of purified liquid into the liquid storage tank 216, thereby ensuring the purification effect of the purified liquid.

[0066] refer to Figures 2-6 As shown, multiple pH sensors 218 are connected to the inner wall of the storage tank 216. These sensors allow for the detection of the pH value of the purified liquid within the storage tank 216, thus ensuring the purification effect of the purified liquid.

[0067] refer to Figures 2-6As shown, a centrifugal filter cartridge 219 is installed inside the storage tank 216. The centrifugal filter cartridge 219 filters the used purified liquid dripping from the pretreatment tower 201. A fixing frame 220 connects the centrifugal filter cartridge 219 to the drive shaft 214. The fixing frame 220 connects the drive shaft 214 and the centrifugal filter cartridge 219, allowing the centrifugal filter cartridge 219 to rotate synchronously with the drive shaft 214 under the action of the fixing frame 220, thus facilitating centrifugal filtration of the used purified liquid.

[0068] refer to Figures 2-5 As shown, the exhaust gas purification mechanism 3 is located inside the pretreatment tower 201 and above the filter screen cylinder 203. This facilitates the purification of nitrogen oxides and sulfur oxides contained in the exhaust gas after filtering and deoxygenating in the filter screen cylinder 203 by the exhaust gas purification mechanism 3.

[0069] refer to Figure 2 As shown, the exhaust gas purification mechanism 3 includes a flow guiding purification cone 301, which provides limiting support for multiple spray nozzles 302.

[0070] Specifically, the lower part of the flow-guiding purification cone 301 is cone-shaped, which facilitates the guidance and diversion of the rising exhaust gas between the flow-guiding purification cone 301 and the limiting net 303. At the same time, it ensures that the exhaust gas can fully contact the purification wet curtain 310 under the guidance of the flow-guiding purification cone 301, thereby improving the purification effect of the exhaust gas purification mechanism 3 on the exhaust gas.

[0071] refer to Figures 2-5 As shown, the flow-guiding purification cone 301 is positioned close to one side of the filter screen cylinder 203, with multiple evenly distributed spray nozzles 302. The nitrogen oxides and sulfur oxides contained in the exhaust gas are purified by spraying the purification liquid through the multiple spray nozzles 302.

[0072] refer to Figures 2-5 As shown, a pair of limiting nets 303 are provided below the multiple sets of spray nozzles 302, which provide limiting support for the purification packing layer 304. The purification packing layer 304 is filled between the pair of limiting nets 303, which facilitates the slow flow of the purification liquid sprayed by the multiple spray nozzles 302 through the purification packing layer 304. This allows the purification liquid to form a purification liquid film under the action of the purification packing layer 304, thereby improving the contact effect between the purification liquid and the exhaust gas and improving the purification effect of the exhaust gas.

[0073] refer to Figures 2-5 As shown, a connecting frame 305 connects the flow guiding purification cone 301 and the pretreatment tower 201, and the connecting frame 305 supports and fixes the flow guiding purification cone 301.

[0074] refer to Figures 2-5 As shown, each of the multiple sets of spray nozzles 302 is connected by a connecting pipe 306. The connecting pipe 306 connects the multiple sets of spray nozzles 302, facilitating the delivery of purified liquid into the multiple sets of spray nozzles 302.

[0075] refer to Figures 2-3 As shown, fixed mesh frames 307 are fixedly connected to both sides of the limiting mesh 303. The side of the fixed mesh frame 307 away from the spray nozzle 302 is inclined. This facilitates the connection and fixation of the limiting mesh 303 to the pretreatment tower 201 via the fixed mesh frame 307. At the same time, by tilting one side of the fixed mesh frame 307, the purified liquid flowing along the purification wet curtain 310 can be transported to the limiting mesh 303 under the action of the inclined surface, thereby reducing the accumulation of purified liquid above the limiting mesh 303.

[0076] refer to Figures 2-5 As shown, a wet curtain purification mechanism is provided on the outer side of the multiple sets of spray nozzles 302. The wet curtain purification mechanism includes a purification delivery pipe 308, which is located above the multiple sets of spray nozzles 302. The purification delivery pipe 308 connects and conducts to the multiple guide nozzles 309.

[0077] refer to Figures 2-5 As shown, the purification delivery pipe 308 is connected to a plurality of evenly distributed guide nozzles 309 on the side close to the limiting net 303. This facilitates the wetting of the purification wet curtain 310 by conveying the purification liquid through the multiple guide nozzles 309, thereby facilitating the auxiliary purification of the waste gas in the pretreatment tower 201 through the purification wet curtain 310.

[0078] refer to Figures 2-5 As shown, a purification wet curtain 310 is connected below the flow guide nozzle 309, and the purification wet curtain 310 is fixedly connected to the fixed mesh frame 307. This allows the purification liquid to be guided through the purification wet curtain 310 to form a cylindrical purification wet curtain within the pretreatment tower 201, thereby facilitating auxiliary purification and filtration of the exhaust gas within the pretreatment tower 201.

[0079] refer to Figures 1-2 As shown, a purification connecting pipe 311 is connected to one side of the purification delivery pipe 308. This facilitates the delivery of purified liquid into the purification delivery pipe 308 via the purification connecting pipe 311. A guide pipe 312 is connected to the end of the purification connecting pipe 311 located outside the pretreatment tower 201. The guide pipe 312 connects the purification connecting pipe 311 to the booster pump 313, allowing the pressurized purified liquid from the booster pump 313 to be delivered along the guide pipe 312 into the purification connecting pipe 311 during operation.

[0080] refer to Figures 1-2As shown, the end of the guide pipe 312 away from the purification connection pipe 311 is connected to a booster pump 313. The operation of the booster pump 313 is controlled to pressurize and extract the purified liquid in the storage tank 216.

[0081] refer to Figures 1-2 As shown, the booster pump 313 is connected to a circulation connection pipe 314 on the side close to the pretreatment tower 201. The circulation connection pipe 314 serves to connect the storage tank 216 and the booster pump 313, facilitating the export of the purified liquid in the storage tank 216.

[0082] refer to Figure 1 As shown, the circulating cooling mechanism 4 is located above the pretreatment tower 201. This facilitates the cooling and dehumidification of the purified exhaust gas through the circulating cooling mechanism 4, reducing the adverse effects of humidity and temperature in the exhaust gas on the subsequent CO2 absorption process.

[0083] refer to Figure 1 As shown, the circulating cooling mechanism 4 includes a cooling guide cylinder 401. The cooling guide cylinder 401 serves to collect and store the coolant. It also facilitates the cooling and dehumidification of the guided exhaust gas.

[0084] refer to Figures 1-2 As shown, a cooling connecting pipe 402 is provided inside the cooling guide tube 401 to facilitate the guiding treatment of the dehumidified exhaust gas in the cooling chamber. A guiding gas supply pipe 403 connects the cooling connecting pipe 402 and the exhaust gas conveying pipe 101. The guiding gas supply pipe 403 connects the cooling connecting pipe 402 and the exhaust gas conveying pipe 101, facilitating the transport of the pretreated exhaust gas to the capture and absorption tower 1 for CO2 absorption.

[0085] refer to Figures 2-7 As shown, a guide block 404 is provided above the guide purification cone 301, and a guide cooling chamber is formed between the guide block 404 and the guide purification cone 301. This facilitates the guiding treatment of the exhaust gas purified by the exhaust gas purification mechanism 3 through the guide cooling chamber. A cooling connecting pipe 402 is connected to the guide cooling chamber. The cooled exhaust gas is guided and transported through the cooling connecting pipe 402.

[0086] refer to Figures 2-7 As shown, a heat exchange cooling pipe 405 is installed inside the flow guiding cooling chamber, and the heat exchange cooling pipe 405 is arranged in a stepped shape. This facilitates the cooling of the exhaust gas in the flow guiding cooling chamber through the heat exchange cooling pipe 405, reducing the adverse effects of excessively high exhaust gas temperature on the subsequent CO2 collection effect.

[0087] Specifically, a return channel 406 is provided inside the flow guiding and purification cone 301, and the return channel 406 is matched with the heat exchange cooling pipe 405. This facilitates the flow guiding and recovery of the liquefied purification liquid through the return channel 406.

[0088] refer to Figures 2-7 As shown, a liquid storage chamber is formed between the cooling guide tube 401 and the cooling connecting pipe 402, and the liquid storage chamber is filled with coolant. This facilitates the cooling and dehumidification of the waste gas in the pretreatment tower 201 by supplying coolant into the heat exchange cooling pipe 405.

[0089] refer to Figure 1 As shown, a coolant addition pipe 407 is connected to one side of the cooling guide tube 401, and the coolant addition pipe 407 is connected to the storage chamber. This facilitates the addition of coolant to the storage chamber through the coolant addition pipe 407.

[0090] refer to Figures 2-7 As shown, a semiconductor cooling chip 408 is connected to the inner wall of the liquid storage chamber. This allows for the cooling of the coolant stored in the liquid storage chamber by controlling the operation of the semiconductor cooling chip 408.

[0091] refer to Figures 2-7 As shown, a coolant pump 409 is provided on the outside of the cooling guide tube 401, facilitating the extraction and delivery of coolant from the storage chamber by controlling the operation of the coolant pump 409. A coolant extraction pipe 410 connects the coolant pump 409 and the storage chamber, serving to connect the coolant pump 409 and the storage chamber. A coolant delivery pipe 411 connects the coolant pump 409 and the heat exchange cooling pipe 405, facilitating the delivery of the coolant pressurized and extracted by the coolant pump 409 through the coolant delivery pipe 411.

[0092] refer to Figures 2-8 As shown, multiple evenly distributed temperature sensors 412 are connected to the inner wall of the cooling connecting pipe 402, which facilitates the detection and control of the temperature of the exhaust gas transported in the cooling connecting pipe 402 through multiple temperature sensors 412, thereby improving the effect of exhaust gas pretreatment.

[0093] refer to Figures 2-8 As shown, a first valve plate 413 is provided on the side of the cooling connecting pipe 402 away from the temperature sensor 412, and the first valve plate 413 is matched with the cooling connecting pipe 402. By controlling the rotation of the first valve plate 413, the conduction state of the cooling connecting pipe 402 is controlled, thereby facilitating the interception of exhaust gas that does not meet the temperature requirements in the cooling connecting pipe 402, thus improving the effect of exhaust gas pretreatment.

[0094] refer to Figures 2-8As shown, a first valve shaft 414 is fixedly connected inside the first valve plate 413, and the first valve shaft 414 plays the role of supporting, fixing and rotating the first valve plate 413.

[0095] refer to Figures 2-8 As shown, both sides of the cooling connecting pipe 402 are connected to return cooling pipes 415. The return cooling pipes 415 are located below the first valve plate 413 and are connected to the guide cooling chamber. The high-temperature exhaust gas is guided and transported through the return cooling pipes 415. Simultaneously, since the exhaust gas is placed in the liquid storage chamber, the coolant cools the high-temperature exhaust gas returning through the return cooling pipes 415, improving the cooling effect on the exhaust gas.

[0096] Specifically, drive control cavities are provided on both sides of the cooling connecting pipe 402 to provide installation and operating space for the conducting motor 417 and the driving bevel gear 418.

[0097] refer to Figures 2-8 As shown, the first valve shaft 414 is connected to a transmission bevel gear 416 at one end within the drive control chamber. The first valve shaft 414 is driven to rotate by controlling the rotation of the transmission bevel gear 416.

[0098] refer to Figures 2-8 As shown, one end of the transmission bevel gear 416 is connected to a conductive motor 417. By controlling the operation of the conductive motor 417, the first valve shaft 414 is driven to rotate, thereby facilitating the rotational control of the first valve plate 413.

[0099] refer to Figures 2-8 As shown, a drive bevel gear 418 meshes with one side of the transmission bevel gear 416, and the drive bevel gear 418 drives the rotation of the second valve shaft 419. The second valve shaft 419 is connected to the drive bevel gear 418, and the second valve shaft 419 supports, fixes, and drives the rotation of the second valve plate 420.

[0100] refer to Figures 2-8 As shown, the second valve shaft 419 is connected to a second valve plate 420 at one end inside the return cooling pipe 415. The second valve plate 420 is matched with the return cooling pipe 415. This allows for control of the conduction state of the return cooling pipe 415 by controlling the rotation of the second valve plate 420.

[0101] refer to Figure 1As shown, a drive control box 5 is installed on the outside of the pretreatment tower 201. The drive control box 5 is electrically connected to a reciprocating motor 213, a pH sensor 218, a booster pump 313, a semiconductor refrigeration chip 408, a coolant pump 409, a temperature sensor 412, and a conducting motor 417. The drive control box 5 controls the pretreatment process of the waste gas, simplifying the pretreatment effect.

[0102] In practical use, the exhaust gas requiring CO2 capture is transported to the deoxygenation chamber within the pretreatment tower 201 via the exhaust gas conveying pipe 202. The reciprocating motor 213, controlled by the drive control box 5, drives the transmission gear 212 to rotate. The compression guide plate 207, under the action of the drive connecting block 211, rotates along with the drive gear 210. The rotation of the compression guide plate 207 compresses and guides the exhaust gas within the deoxygenation chamber.

[0103] Under the compression action of the compression guide plate 207, the exhaust gas in the impurity removal and deoxygenation chamber can fully contact the impurity filter cylinder 203 and the deoxygenation layer 204, thus filtering and deoxygenating the exhaust gas in the chamber. The exhaust gas is gradually compressed under the combined action of the compression guide plate 207 and the flow limiting plate 206, and then transported to the impurity filter cylinder 203 through the flow conveying hole 205. Furthermore, during the resetting process of the compression guide plate 207, the guide sealing plate 209 can rotate within the compression guide plate 207 under air pressure, causing the compression guide plate 207 to unidirectionally compress the exhaust gas in the impurity removal and deoxygenation chamber.

[0104] The waste gas, after being filtered and deoxygenated, rises continuously under gas pressure inside the filter screen cylinder 203. The booster pump 313, controlled by the drive control box 5, extracts the alkaline purification liquid stored in the storage tank 216. The alkaline purification liquid is transported to the purification delivery pipe 308 through the purification connection pipe 311 and the guide pipe 312. The alkaline purification liquid is then transported into the purification wet curtain 310 through multiple guide nozzles 309. This process forms a cylindrical purification wet curtain in the pretreatment tower 201 under the action of the guide purification cone 301, the purification packing layer 304, the guide nozzles 309, and the purification wet curtain 310.

[0105] Meanwhile, the alkaline purification liquid can be sprayed out by multiple spray nozzles 302. By spraying the alkaline purification liquid into the cylindrical purification wet curtain through multiple spray nozzles 302, the nitrogen oxides and sulfur oxides contained in the waste gas in the filter screen cylinder 203 are neutralized and purified, thus avoiding the adverse effects of nitrogen oxides and sulfur oxides in the waste gas on the subsequent CO2 absorption process.

[0106] In addition, since the lower end of the flow guiding purification cone 301 is cone-shaped, the flow guiding purification cone 301 can divert and guide the rising exhaust gas, so that the exhaust gas can fully contact the purification wet curtain 310 under the action of the flow guiding purification cone 301, thereby improving the purification effect of the exhaust gas.

[0107] After being purified by the alkaline purification liquid, the exhaust gas rises into the cooling chamber under the action of the guide purification cone 301 and the air guide block 404. The coolant pump 409 is controlled by the drive control box 5 to extract the coolant in the cooling guide cylinder 401. By delivering the coolant to the heat exchange cooling pipe 405, the heat exchange cooling pipe 405 cools and dehumidifies the exhaust gas in the cooling chamber. The alkaline purification liquid generated during the cooling and dehumidification process can be returned by the return tank 406.

[0108] Furthermore, the cooled and dehumidified exhaust gas is transported through the cooling connecting pipe 402. During use, the temperature of the exhaust gas in the cooling connecting pipe 402 can be detected by the temperature sensor 412. When the temperature of the exhaust gas in the cooling connecting pipe 402 meets the requirements, the drive control box 5 controls the operation of the conducting motor 417, causing the first valve shaft 414 to drive the first valve plate 413 to rotate. The rotation of the first valve plate 413 keeps the cooling connecting pipe 402 in a conducting state. At the same time, during the rotation of the first valve plate 413, the second valve plate 420 rotates synchronously under the cooperation of the second valve shaft 419, the drive bevel gear 418, and the transmission bevel gear 416. The synchronous rotation of the second valve plate 420 blocks the return cooling pipe 415, thereby facilitating the transport of the cooled and dehumidified exhaust gas along the cooling connecting pipe 402, the guiding gas supply pipe 403, and the cooling guide cylinder 401 to the collection and absorption tower 1 for CO2 absorption.

[0109] Furthermore, when the exhaust gas temperature in the cooling connecting pipe 402 does not meet the requirements, the operation of the conducting motor 417 is controlled to block the cooling connecting pipe 402 by the first valve plate 413, thus opening the return cooling pipe 415. The exhaust gas in the cooling connecting pipe 402 that does not meet the required temperature can then flow back along the return cooling pipe 415 to the guide cooling chamber for further cooling and dehumidification. During the return flow of the exhaust gas through the return cooling pipe 415, the coolant in the cooling guide cylinder 401 can cool and lower the exhaust gas temperature, improving the pretreatment effect of the exhaust gas.

[0110] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0111] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A reaction device for CO2 capture, characterized in that, include: A capture and absorption tower (1) is provided, and a waste gas conveying pipe (101) is connected to one side of the capture and absorption tower (1). A compression filtration and deoxygenation mechanism (2) is provided on one side of the collection and absorption tower (1). The compression filtration and deoxygenation mechanism (2) includes a pretreatment tower (201). A waste gas conveying pipe (101) is connected to one side of the pretreatment tower (201). A pair of filter screens (203) are provided in the pretreatment tower (201). A deoxygenation layer (204) is connected between the pair of filter screens (203). A filtration and deoxygenation chamber is formed between the filter screens (203) and the pretreatment tower (201). A reciprocating compression and flow guiding mechanism is provided in the filtration and deoxygenation chamber. The reciprocating compression and flow guiding mechanism is matched with the filter screens (203). A self-checking filtration mechanism is provided below the filter screens (203). The exhaust gas purification mechanism (3) is located inside the pretreatment tower (201) and above the filter screen cylinder (203). The exhaust gas purification mechanism (3) includes a flow guiding purification cone (301). The flow guiding purification cone (301) is located on one side of the filter screen cylinder (203) with multiple sets of evenly distributed spray nozzles (302). A pair of limiting nets (303) are provided below the multiple sets of spray nozzles (302). A purification packing layer (304) is filled between the pair of limiting nets (303). A wet curtain purification mechanism is provided on the outside of the multiple sets of spray nozzles (302). A circulating cooling mechanism (4) is located above the pretreatment tower (201). The circulating cooling mechanism (4) includes a cooling guide tube (401), a cooling connecting pipe (402) is provided inside the cooling guide tube (401), and a guiding gas supply pipe (403) is connected between the cooling connecting pipe (402) and the waste gas conveying pipe (101). The filter screen cylinder (203) has a flow guiding and conveying hole (205) on the side away from the exhaust gas conveying pipe (101), and a flow guiding and limiting plate (206) is provided in the filter deoxygenation chamber. The flow guiding and limiting plate (206) matches the flow guiding and conveying hole (205). The reciprocating compression guide mechanism includes a compression guide plate (207), a cleaning brush (208) is connected to the side of the compression guide plate (207) close to the filter screen cylinder (203), a T-shaped air guide hole is opened on the compression guide plate (207), a guide sealing plate (209) is provided in the T-shaped air guide hole, and the guide sealing plate (209) is hinged to the compression guide plate (207); A drive gear (210) is provided above the compression guide plate (207). A drive connecting block (211) is fixedly connected between the drive gear (210) and the compression guide plate (207). A transmission gear (212) is meshed on one side of the drive connecting block (211). A reciprocating motor (213) is connected to the transmission gear (212). A guide block (404) is provided above the flow-guiding purification cone (301). A flow-guiding cooling cavity is formed between the guide block (404) and the flow-guiding purification cone (301). The cooling connecting pipe (402) is connected to the flow-guiding cooling cavity. A heat exchange cooling pipe (405) is provided in the flow-guiding cooling cavity. The heat exchange cooling pipe (405) is arranged in a stepped shape. A return groove (406) is opened in the flow-guiding purification cone (301). The return groove (406) matches the heat exchange cooling pipe (405).

2. The CO2 capture reaction device according to claim 1, characterized in that, The self-inspection filter mechanism includes a drive shaft (214), which is located inside the filter screen cylinder (203) and passes through a pair of limiting nets (303). A guide impeller (215) is fixedly connected to the outside of the drive shaft (214), and the guide impeller (215) is matched with the exhaust gas conveying pipe (101) and the flow conveying hole (205).

3. The CO2 capture reaction device according to claim 2, characterized in that, Below the filter screen cylinder (203) is a liquid storage tank (216), and a liquid addition pipe (217) is connected to one side of the liquid storage tank (216). Multiple pH sensors (218) are connected to the inner wall of the liquid storage tank (216). A centrifugal filter cylinder (219) is provided inside the liquid storage tank (216), and a fixing frame (220) is connected between the centrifugal filter cylinder (219) and the drive shaft (214).

4. The CO2 capture reaction device according to claim 1, characterized in that, A connecting frame (305) is connected between the flow-guiding purification cone (301) and the pretreatment tower (201). A connecting pipe (306) is connected between each of the multiple sets of spray nozzles (302). A fixed mesh frame (307) is fixedly connected to both sides of the limiting net (303). The fixed mesh frame (307) is inclined on the side away from and close to the spray nozzle (302).

5. The CO2 capture reaction device according to claim 1, characterized in that, The evaporative cooling pad purification mechanism includes a purification delivery pipe (308), which is located above multiple sets of spray nozzles (302). A plurality of evenly distributed guide nozzles (309) are connected to the side of the purification delivery pipe (308) close to the limiting net (303). A purification evaporative cooling pad (310) is connected below the guide nozzles (309), and the purification evaporative cooling pad (310) is fixedly connected to the fixed net frame (307).

6. The CO2 capture reaction device according to claim 5, characterized in that, A purification connecting pipe (311) is connected to one side of the purification delivery pipe (308). A guide pipe (312) is connected to one end of the purification connecting pipe (311) outside the pretreatment tower (201). A booster pump (313) is connected to one end of the guide pipe (312) away from the purification connecting pipe (311). A circulation connecting pipe (314) is connected to one side of the booster pump (313) close to the pretreatment tower (201).

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