Waste gas treatment device for reducing carbon emission

Abstract

The invention discloses a waste gas treatment device for reducing carbon emission, and relates to the technical field of waste gas treatment equipment.The waste gas treatment device comprises a spray tower, a partition plate is arranged on the inner bottom wall of the spray tower, and the partition plate encloses the bottom of the spray tower to form a left water storage cavity and a right water storage cavity which are independent of each other; the two gas inlet pipes are respectively communicated with the bottoms of the corresponding water storage cavities, each gas inlet pipe is provided with a gas inlet valve, and the inlet ends of the two gas inlet pipes are jointly communicated to a waste gas inlet pipe. The partition plate divides the tower bottom into the left independent water storage cavity and the right independent water storage cavity, waste gas is blown into the bottom of a water body through the gas inlet pipe, particles are captured by water in the bubble rising process, front dust removal of replacing a filter screen with water washing is achieved, and the hidden danger of blockage of a filter screen plate is eliminated; when the turbidity of the water storage cavity on one side is increased and the water storage cavity needs to be cleaned, only the gas inlet valve on the side needs to be closed, waste gas is automatically switched to the water storage cavity on the other side to be continuously treated, continuous gas inlet can be maintained without shutdown of the system, continuous operation of a COremoval section is guaranteed, and accordingly particle pre-separation and carbon emission reduction stability are both considered.

Description

Technical Field

[0001] This invention relates to waste gas treatment equipment technology, specifically to a waste gas treatment device for reducing carbon emissions. Background Technology

[0002] Reducing carbon emissions can effectively slow down global warming, prevent frequent extreme heat waves, torrential rains, droughts, and other climate disasters, protect agricultural yields and freshwater supplies, and reduce huge economic losses and population migration risks caused by climate disasters. Simultaneously, it can significantly reduce the synergistic emissions of sulfides, nitrogen oxides, and particulate matter, improve regional air quality, reduce the incidence of respiratory and cardiovascular diseases and the risk of premature death, and save substantial public health expenditures. In terms of energy security, promoting energy efficiency and increasing the proportion of renewable energy sources such as wind and solar power in industry, transportation, and construction can reduce dependence on fossil fuels, lower energy import expenditures and the risk of geopolitical supply disruptions, and enhance national energy self-sufficiency. Regarding economic transformation, carbon emission reduction forces enterprises to adopt green processes, circular materials, and digital management, fostering emerging industries such as new energy vehicles, energy storage, hydrogen energy, and carbon capture, utilization, and storage, driving upstream and downstream investment, employment, and technological output. For businesses, lower carbon intensity directly reduces carbon allowance purchase costs, allows them to enjoy green credit, tax breaks, and carbon market benefits, while meeting the low-carbon procurement requirements of international brand supply chains, avoiding "carbon tariff" barriers, and expanding market share. In terms of ecological benefits, mitigating warming helps protect forest, wetland, and marine ecosystems, maintains biodiversity, reduces coral bleaching, species extinction, and desertification, and safeguards ecosystem services. From a social welfare perspective, clean air, a livable climate, and green employment improve public health and quality of life, promote green consumption, and enhance the public's sense of gain from sustainable development. Internationally, actively fulfilling emission reduction commitments helps enhance a country's voice and image in global climate governance, promotes green finance, technology transfer, and South-South cooperation, achieving multiple win-win outcomes for climate, economy, environment, health, and diplomacy.

[0003] In industrial combustion and chemical emission sources, exhaust gases often carry high concentrations of CO2 and a large number of particulate impurities. To reduce carbon emissions, existing emission reduction processes generally adopt a two-stage series mode of "filter plate + spray tower". That is, the filter plate first intercepts particulate matter, and then the liquid containing decarbonizing agent in the spray layer absorbs CO2 and generates recyclable solid products. However, the filter plate is prone to pore blockage during continuous interception, which leads to increased pressure drop and decreased throughput. It is necessary to shut down the machine regularly for disassembly, cleaning or replacement, which shortens the effective treatment time and increases the intensity of manual maintenance. During the shutdown, the exhaust gas still needs to be discharged externally or bypassed directly, which directly reduces the operational continuity and treatment efficiency of the entire CO2 removal system and makes it difficult to meet the requirements for carbon emission reduction stability under continuous production conditions. Summary of the Invention

[0004] The purpose of this invention is to provide a waste gas treatment device for reducing carbon emissions, in order to solve the problem in the prior art that the filter screen is easily clogged by particulate impurities and needs to be shut down for cleaning and replacement, resulting in poor continuity of waste gas treatment and reduced carbon dioxide removal efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waste gas treatment device for reducing carbon emissions, comprising:

[0006] The spray tower has a partition on its inner bottom wall, which encloses the bottom of the spray tower to form two independent water storage chambers on the left and right sides.

[0007] Two air inlet pipes are connected to the bottom of the corresponding water storage chambers, and each air inlet pipe is equipped with an air inlet valve. The inlet ends of the two air inlet pipes are connected to a waste gas inlet pipe, which is used to alternately or simultaneously introduce waste gas containing particles and CO2 into the two water storage chambers for water washing and dust removal.

[0008] The sealing layer plate is fixed to the inner wall of the spray tower and located above the partition plate, dividing the space inside the tower into a lower water washing layer and an upper spray layer.

[0009] A gas outlet assembly, located on the sealing layer plate, is used to guide the waste gas after water washing into the spray layer;

[0010] The spray assembly, located within the spray layer, is used to spray a liquid containing a decarbonizing agent downwards to absorb CO2 from the exhaust gas.

[0011] A gas discharge assembly, located at the top of the spray tower, is used to discharge the purified gas after decarbonization.

[0012] The drainage assembly and the water inlet assembly are connected to each water storage chamber respectively, and are used to complete water replacement without stopping the machine when the corresponding air inlet valve is closed.

[0013] Furthermore, a serpentine coil is fixedly installed on the bottom wall of the water storage cavity, and several air outlets are connected to the upper outer wall of the serpentine coil.

[0014] Furthermore, the installation height of the exhaust gas inlet pipe is greater than the water height inside the water storage chamber.

[0015] Furthermore, the gas outlet assembly includes two mounting holes formed on the upper wall of the sealing layer plate, each mounting hole having a sealing sleeve fixedly installed inside, and a gas guide tube fixedly installed inside the sealing sleeve. The lower end of the gas guide tube is higher than the water level inside the water storage chamber, the upper end of the gas guide tube is higher than the upper surface of the sealing layer plate, and the upper end of the gas guide tube is connected to a downward-facing curved pipe.

[0016] Furthermore, the spray assembly includes a spray plate disposed inside the spray layer, a spray pipe connected to the spray plate, one end of the spray pipe away from the spray plate being sealed through the inner wall of the spray tower and extending to the outer side, and a conveying component being provided at one end of the spray pipe.

[0017] Furthermore, the conveying assembly includes a pump disposed on one side of the outside of the spray tower. The upper end of the pump is connected to a first conduit. One end of the spray pipe is connected to the outer wall of the first conduit. The outer wall of the pump is connected to a second conduit. One end of the second conduit is connected to a storage box. The top wall of the storage box is connected to a discharge pipe. One end of the discharge pipe is sealed and penetrates the outer wall of the spray tower and extends to the inner side, and is located inside and below the spray layer.

[0018] Furthermore, the discharge pipe is installed at an angle, and the installation height of the end of the discharge pipe located within the spray layer is greater than the installation height of the end of the discharge pipe near the storage box.

[0019] Furthermore, the gas discharge assembly includes a gas discharge pipe connected to the top of the spray tower, one end of which is connected to a fan, and an external discharge pipe is connected to the fan.

[0020] Furthermore, the drainage assembly includes two drainage pipes symmetrically arranged on the bottom wall of the spray tower and correspondingly connected to each water storage chamber, and drainage valves are provided on the drainage pipes.

[0021] Furthermore, the water inlet assembly includes two water inlet pipes symmetrically arranged on the outer wall of the spray tower and correspondingly connected to the upper part of each water storage chamber, and the water inlet pipes are equipped with water inlet valves.

[0022] Compared with the prior art, the present invention provides a waste gas treatment device for reducing carbon emissions. A partition divides the bottom of the tower into two independent water storage chambers. The waste gas is first blown into the bottom of the water body through the air inlet pipe. During the rise of the bubbles, the particles are captured by the water, realizing pre-dust removal by "washing with water instead of filter screen" and eliminating the risk of filter screen clogging. When the turbidity of one water storage chamber increases and cleaning is required, the air inlet valve on that side is closed and the waste gas is automatically switched to the other water storage chamber for continued treatment. The system can maintain continuous air intake without stopping the machine, ensuring uninterrupted operation of the CO2 removal section, thereby taking into account both particle pre-separation and carbon emission reduction stability.

[0023] The sealing plate divides the tower into a lower water washing layer and an upper spray layer. The waste gas after water washing rises into the spray layer through the gas venting component and comes into contact with the spray liquid containing decarbonizing agent. CO2 is absorbed by the liquid phase and converted into recyclable solid products, realizing a series process of "dust removal first and then decarbonization". This avoids particles from entering the circulating pump and nozzles, causing wear and blockage, and extends the service life of the spray components, while maintaining the high efficiency of the decarbonization reaction.

[0024] After closing the air inlet valve on one side, the drainage and water inlet components can quickly change the water in the water storage chamber by "draining the turbid water first and then introducing the clean water". During the cleaning process, the other water storage chamber still bears the full air volume, achieving "zero downtime self-maintenance". This greatly reduces the labor intensity of manual disassembly and cleaning and the risk of waste gas bypass emission, and improves the operational continuity and carbon emission reduction efficiency of the entire unit. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a schematic diagram of the overall external structure provided by the present invention;

[0027] Figure 2 This is a first-view structural schematic diagram provided for the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the spray tower provided by the present invention;

[0029] Figure 4 This is a schematic diagram of the second-view structure provided by the present invention;

[0030] Figure 5 This is a schematic diagram of the third-view structure provided by the present invention;

[0031] Figure 6 This is a partial structural schematic diagram provided for the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Spray tower; 11. Baffle plate; 12. Water storage chamber; 13. Spray layer; 2. Air inlet pipe; 21. Air inlet valve; 22. Exhaust gas inlet pipe; 3. Sealing plate; 4. Gas outlet assembly; 41. Sealing sleeve; 42. Air guide pipe; 43. Bend; 5. Spray assembly; 51. Spray disc; 52. Spray pipe; 53. Pump; 54. First conduit; 55. Second conduit; 56. Storage tank; 57. Discharge pipe; 6. Gas discharge assembly; 61. Gas discharge pipe; 62. Fan; 63. External discharge pipe; 7. Drainage assembly; 71. Drainage pipe; 72. Drainage valve; 8. Water inlet assembly; 81. Water inlet pipe; 82. Water inlet valve; 9. Serpentine coil; 10. Gas outlet. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] As attached Figure 1 To be continued Figure 6 As shown:

[0036] Example 1:

[0037] This invention provides a waste gas treatment device for reducing carbon emissions, comprising:

[0038] The spray tower 1 has a partition 11 on its inner bottom wall, which encloses the bottom of the spray tower 1 to form two independent water storage chambers 12 on the left and right sides.

[0039] Two air inlet pipes 2 are connected to the bottom of the corresponding water storage chamber 12 respectively, and each air inlet pipe 2 is equipped with an air inlet valve 21. The inlet ends of the two air inlet pipes 2 are connected to a waste gas inlet pipe 22, which is used to alternately or simultaneously introduce waste gas containing particles and CO2 into the two water storage chambers 12 for water washing and dust removal.

[0040] The sealing layer 3 is fixed to the inner wall of the spray tower 1 and located above the partition 11, dividing the space inside the tower into a lower water washing layer and an upper spray layer 13.

[0041] Gas outlet component 4 is located on sealing layer plate 3 and is used to introduce the waste gas after water washing into spray layer 13.

[0042] The spray assembly 5 is located inside the spray layer 13 and is used to spray liquid containing decarbonizing agent downwards to absorb CO2 in the exhaust gas.

[0043] Gas discharge assembly 6 is located at the top of spray tower 1 and is used to discharge purified gas after decarbonization;

[0044] The drainage component 7 and the water inlet component 8 are respectively connected to each water storage chamber 12, and are used to complete water replacement without stopping the machine when the corresponding air inlet valve 21 is closed.

[0045] As can be seen from the above, the partition 11 divides the bottom of the tower into two independent water storage chambers 12 on the left and right. The exhaust gas is first blown into the bottom of the water body through the air inlet pipe 2. During the rise of the bubbles, the particles are captured by the water, realizing the pre-dust removal of "using water to replace the filter screen" and eliminating the risk of filter screen clogging. When the turbidity of one side of the water storage chamber 12 increases and cleaning is required, it is only necessary to close the air inlet valve 21 on that side, and the exhaust gas will automatically switch to the other side of the water storage chamber 12 for continued treatment. The system can maintain continuous air intake without stopping the machine, ensuring uninterrupted operation of the CO2 removal section, thereby taking into account both particle pre-separation and carbon emission reduction stability.

[0046] The sealing plate 3 divides the tower into a lower water washing layer and an upper spray layer 13. The waste gas after water washing rises into the spray layer 13 through the gas outlet component 4 and comes into contact with the spray liquid containing decarbonizing agent. CO2 is absorbed by the liquid phase and converted into recyclable solid products, realizing the series process of "dust removal first and then decarbonization". This avoids particles from entering the circulation pump and nozzles, causing wear and blockage, and extends the service life of the spray component 5, while maintaining the high efficiency of the decarbonization reaction.

[0047] After closing the single-sided air inlet valve 21, the drainage component 7 and the water inlet component 8 can quickly change the water in the water storage chamber 12 by "draining the turbid water first and then introducing the clean water". During the cleaning, the other side of the water storage chamber 12 still bears the full air volume, realizing "zero downtime self-maintenance", which greatly reduces the labor intensity of manual disassembly and cleaning and the risk of waste gas bypass emission, and improves the operation continuity and carbon emission reduction efficiency of the whole set of equipment.

[0048] As attached Figure 6 As shown, in order to improve the efficiency of waste gas washing, a serpentine coil 9 is fixedly installed on the bottom wall of the water storage chamber 12, and a number of air outlets 10 are connected to the outer wall above the serpentine coil 9.

[0049] As can be seen from the above, the serpentine coil 9 winds around the bottom of the water storage chamber 12, and the exhaust gas is cut into a large number of microbubbles through the dense air outlet 10, which significantly increases the gas-liquid contact area and residence time, so that the particles are fully wetted, aggregated and sink to the bottom of the water during the rising stage of the bubbles. At the same time, the microbubble disturbance can prevent solid particles from depositing on the surface of the coil, thus achieving long-term "self-flushing" operation.

[0050] As attached Figure 3 and appendix Figure 6 As shown, to prevent water from flowing back into the exhaust gas inlet pipe 22 from the water storage chamber 12, the installation height of the exhaust gas inlet pipe 22 is greater than the height of the water inside the water storage chamber 12.

[0051] As can be seen from the above, the inlet of the exhaust gas inlet pipe 22 is higher than the highest liquid level of the water storage chamber 12, forming a water seal barrier. When the gas blowing stops or the water level in the water storage chamber 12 fluctuates, the dust-laden water cannot flow back into the main pipeline, thus preventing particulate impurities from entering the upstream fan components or merging pipelines in reverse.

[0052] As attached Figure 3 As shown, to prevent the spray liquid inside the spray layer 13 from entering the air guide pipe 42, the gas outlet component 4 includes two mounting holes opened on the upper wall of the sealing layer plate 3. A sealing sleeve 41 is fixedly installed in each mounting hole. An air guide pipe 42 is fixedly installed inside the sealing sleeve 41. The lower end of the air guide pipe 42 is higher than the water level inside the water storage chamber 12, and the upper end of the air guide pipe 42 is higher than the upper surface of the sealing layer plate 3. The upper end of the air guide pipe 42 is connected to a downward-facing bent pipe 43.

[0053] As can be seen from the above, the lower inlet of the air guide pipe 42 is higher than the liquid surface, and the upper outlet adopts a downward-facing bend pipe 43, forming an "inverted U" air seal structure. This can prevent the spray liquid from seeping down the pipe wall into the water washing layer under the action of gravity or airflow suction, thereby maintaining the cleanliness of the water in the water storage chamber 12. At the same time, the downward-facing design of the bend pipe 43 forces the rising gas to turn back downwards before entering the spray area, extending the airflow path and distributing the airflow evenly, thereby improving the contact efficiency of subsequent decarbonization spraying.

[0054] As attached Figure 2 To be continued Figure 3 As shown, the spray liquid is sprayed into the interior of the spray layer 13 to absorb carbon dioxide. The spray assembly 5 includes a spray plate 51 disposed inside the spray layer 13. A spray pipe 52 is connected to the spray plate 51. The end of the spray pipe 52 away from the spray plate 51 is sealed and penetrates the inner wall of the spray tower 1 and extends to the outside. A conveying component is provided at one end of the spray pipe 52.

[0055] The conveying assembly includes a pump 53 disposed on the outer side of the spray tower 1. The upper end of the pump 53 is connected to a first conduit 54. One end of the spray pipe 52 is connected to the outer wall of the first conduit 54. The outer wall of the pump 53 is connected to a second conduit 55. One end of the second conduit 55 is connected to a storage tank 56. The top wall of the storage tank 56 is connected to a discharge pipe 57. One end of the discharge pipe 57 is sealed and penetrates the outer wall of the spray tower 1 and extends to the inner side, and is located inside and below the spray layer 13.

[0056] As can be seen from the above, the pump 53 draws fresh decarbonizing agent from the storage tank 56 through the second conduit 55, and then sends it to the spray plate 51 through the first conduit 54 and the spray pipe 52 to form a uniform mist. At the same time, the storage tank 56 recovers the reaction liquid accumulated at the bottom of the spray layer 13 through the inclined discharge pipe 57. The liquid level difference is used to achieve "gravity self-recirculation", which reduces additional power consumption and ensures that the spray liquid is continuously circulated and renewed in the closed loop to maintain the concentration of active components required for CO2 absorption.

[0057] As attached Figure 1 As shown, in order to recycle the spray liquid accumulated inside the spray layer 13, the discharge pipe 57 is installed at an angle, and the installation height of the end of the discharge pipe 57 inside the spray layer 13 is greater than the installation height of the end of the discharge pipe 57 near the storage box 56.

[0058] As can be seen from the above, the discharge pipe 57 adopts an inclined installation method of "high inlet and low outlet". Relying on the position difference, the rich liquid automatically flows into the storage tank 56, and the spray liquid can be circulated without the need for a return pump, thus reducing the system energy consumption. At the same time, the high inlet can prevent the liquid from accumulating too deeply at the bottom of the spray layer 13, which could cause a gas short circuit.

[0059] As attached Figure 1As shown, in order to discharge the purified and absorbed gas, the gas discharge assembly 6 includes a gas discharge pipe 61 connected to the top of the spray tower 1. One end of the gas discharge pipe 61 is connected to a fan 62, and an external discharge pipe 63 is connected to the fan 62. The fan 62 adopts the existing technology structure.

[0060] As can be seen from the above, the blower 62 creates a slight negative pressure at the inlet of the gas discharge pipe 61, which makes the airflow inside the tower rise steadily from bottom to top, avoiding the retention or overflow of exhaust gas due to insufficient natural suction. By adjusting the speed of the blower 62, different exhaust gas loads can be matched, maintaining the operational flexibility of the spray tower 1. At the same time, the external discharge pipe 63 can be easily connected to the subsequent chimney or online monitoring module to achieve emission compliance and remote data transmission.

[0061] As attached Figure 4 As shown, in order to drain the water inside the water storage chamber 12 and to drain in new water, the drainage component 7 includes two drainage pipes 71 symmetrically arranged on the bottom wall of the spray tower 1 and correspondingly connected to each water storage chamber 12. Drainage valves 72 are provided on the drainage pipes 71.

[0062] The water inlet assembly 8 includes two water inlet pipes 81 symmetrically arranged on the outer wall of the spray tower 1 and correspondingly connected to the upper part of each water storage chamber 12. The water inlet pipes 81 are equipped with water inlet valves 82.

[0063] As can be seen from the above, when the turbidity of the single-sided water storage chamber 12 reaches the threshold, the corresponding drain valve 72 can be opened and the precipitated sludge can be quickly discharged under gravity. In conjunction with the water inlet valve 82, clean water is simultaneously added to complete the rapid flushing of "discharge first and then replenishment". There is no need for manual entry into the tower to remove sludge, which greatly reduces the maintenance intensity and ensures the long-term stability of the water washing effect.

[0064] Example 2:

[0065] This invention provides a method for using a waste gas treatment device for reducing carbon emissions, comprising the following steps:

[0066] S1. Pretreatment switching: Open the air inlet valves 21 on both sides, and simultaneously introduce the exhaust gas containing particles and CO2 into the left and right water storage chambers 12 through the exhaust gas inlet pipe 22. The exhaust gas is cut into microbubbles by each outlet 10 of the serpentine coil 9, and the particles are captured in the water washing layer.

[0067] S2. Water washing monitoring: Continuously monitor the turbidity of the water outlet from both sides of the water storage chamber 12 (by taking water samples). When the turbidity on either side reaches the set upper limit, close the air inlet valve 21 on that side and switch all the exhaust gas to the other side of the water storage chamber 12 to keep the system continuously intake air.

[0068] S3. Online water change: First, open the drain valve 72 to remove sludge from the closed water storage chamber 12, then open the inlet valve 82 to add clean water. After rinsing, reopen the air inlet valve 21 on the same side to restore the parallel operation of the two chambers and achieve zero downtime self-maintenance.

[0069] S4, Decarbonization and absorption: The waste gas after washing rises into the spray layer 13 through the air guide pipe 42 and the bend pipe 43 in the sealing layer plate 3. The pump 53 is started to pump the decarbonizing agent in the storage box 56 into the spray plate 51, forming a uniform mist that comes into countercurrent contact with the waste gas.

[0070] S5. Purification and emission: The clean gas after decarbonization is discharged sequentially through the gas emission pipe 61 and the external discharge pipe 63 under the action of the tower top fan 62 with slight negative pressure, completing the continuous and stable operation of particle pre-separation and CO2 removal.

[0071] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An exhaust gas treatment device for reducing carbon emissions, characterized by, The utility model relates to a kind of water scrubbing tower, including: Spray tower (1), the inner bottom wall is equipped with baffle (11), the baffle (11) is formed by surrounding left and right two independent water storage cavities (12) at spray tower (1) bottom; Two air inlet pipes (2) are communicated with the bottom of the corresponding water storage cavity (12) respectively, and each air inlet pipe (2) is equipped with air inlet valve (21), and the inlet end of two air inlet pipes (2) is commonly communicated to a waste gas inlet pipe (22), for alternately or simultaneously introducing waste gas containing particles and CO2 into two water storage cavities (12) for water washing dust removal; Sealing layer plate (3) is fixed to the inner wall of spray tower (1) and located above baffle (11), which divides the space in the tower into the lower water washing layer and the upper spray layer (13); Gas outlet assembly (4) is provided on the sealing layer plate (3) for guiding the washed waste gas into the spray layer (13); Spray assembly (5) is provided in the spray layer (13) for spraying liquid containing decarbonizing agent downward to absorb CO2 in the waste gas; Gas discharge assembly (6) is provided at the top of the spray tower (1) for discharging the purified gas after decarbonization; Drainage assembly (7) and water inlet assembly (8) are connected with each water storage cavity (12) respectively for completing water change without shutdown when the corresponding air inlet valve (21) is closed.

2. An exhaust treatment device for reducing carbon emissions according to claim 1, wherein, The inner bottom wall of the water storage cavity (12) is fixedly provided with a serpentine coil (9), and the outer wall above the serpentine coil (9) is communicated with a plurality of gas outlets (10).

3. An exhaust treatment device for reducing carbon emissions according to claim 1, wherein, The installation height of the waste gas inlet pipe (22) is greater than the water level in the water storage cavity (12).

4. An exhaust treatment device for reducing carbon emissions according to claim 1, wherein, The gas outlet assembly (4) includes two mounting holes opened on the upper wall of the sealing layer plate (3), each mounting hole is fixedly installed with a sealing sleeve (41), the inner portion of the sealing sleeve (41) is fixedly installed with a gas guide pipe (42), the lower end of the gas guide pipe (42) is higher than the water level in the water storage cavity (12), the upper end of the gas guide pipe (42) is higher than the upper surface of the sealing layer plate (3), and the upper end of the gas guide pipe (42) is communicated with a downward-opening elbow (43).

5. The exhaust treatment device for reducing carbon emissions of claim 1, wherein, The spray assembly (5) includes a spray disc (51) arranged in the spray layer (13), the spray disc (51) is communicated with a spray pipe (52), one end of the spray pipe (52) away from the spray disc (51) is sealingly penetrated through the inner wall of the spray tower (1) and extends to one side outside, and the one end of the spray pipe (52) is provided with a conveying assembly.

6. An exhaust treatment device for reducing carbon emissions according to claim 5, wherein, The conveying assembly includes a pump (53) arranged on one side outside the spray tower (1), the upper end of the pump (53) is communicated with a first conduit (54), one end of the spray pipe (52) is communicated with the outer wall of the first conduit (54), the outer wall of the pump (53) is communicated with a second conduit (55), one end of the second conduit (55) is communicated with a storage tank (56), the top wall of the storage tank (56) is communicated with a discharge pipe (57), one end of the discharge pipe (57) is sealingly penetrated through the outer wall of the spray tower (1) and extends to one side inside, and is located below the spray layer (13).

7. An exhaust treatment device for reducing carbon emissions according to claim 6, wherein, The discharge pipe (57) is installed obliquely, and the installation height of one end of the discharge pipe (57) in the spraying layer (13) is greater than the installation height of the other end of the discharge pipe (57) close to the storage tank (56).

8. The exhaust treatment device for reducing carbon emissions of claim 1, wherein, The gas discharge assembly (6) comprises a gas discharge pipe (61) communicated with the top of the spraying tower (1), one end of the gas discharge pipe (61) is communicated with a fan (62), and the fan (62) is communicated with an external discharge pipe (63).

9. An exhaust treatment device for reducing carbon emissions according to claim 1, wherein, The water drainage assembly (7) comprises two drainage pipes (71) symmetrically arranged on the bottom wall of the spraying tower (1) and communicated with the water storage cavities (12) correspondingly, and the drainage pipes (71) are provided with drainage valves (72).

10. The exhaust treatment device for reducing carbon emissions of claim 1, wherein, The water inlet assembly (8) comprises two water inlet pipes (81) symmetrically arranged on the outer wall of the spraying tower (1) and communicated with the upper parts of the water storage cavities (12) correspondingly, and the water inlet pipes (81) are provided with water inlet valves (82).

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