CN218012022U

CN218012022U - Gas absorption system

Info

Publication number: CN218012022U
Application number: CN202221850163.5U
Authority: CN
Inventors: 吕锡嘉; 刘一凡; 张�浩; 赵途; 张俊伟; 陈申; 白亚奎; 庄姝娴
Original assignee: State Power Investment Group Science and Technology Research Institute Co Ltd
Current assignee: Xace Turbo Technologies Beijing Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-12-13
Anticipated expiration: 2032-07-18

Abstract

The utility model provides a gas absorption system. The gas absorption system is used for absorbing carbon dioxide gas, and comprises: the air inlet and the air outlet are arranged oppositely; the gas pretreatment device is arranged in the shell and positioned at the gas inlet so as to filter impurities in the gas entering the gas inlet; the gas absorption assembly is arranged in the shell and is positioned at the downstream of the gas pretreatment device, and the gas absorption assembly comprises a first liquid supply device and a first spraying structure which are communicated with each other and used for providing alkaline solution; the alkaline solution flowing out of the first spraying structure and carbon dioxide in the gas are subjected to chemical reaction to absorb the carbon dioxide; and the gas conveying device is arranged at the gas outlet and/or the gas inlet and is used for conveying the gas out of the gas absorption system through the gas inlet. The utility model provides an among the prior art impurity such as solid particle that mix with in air or the flue gas easily accumulate in CO2 entrapment system problem.

Description

Gas absorption system

Technical Field

The utility model relates to a carbon dioxide entrapment technical field particularly, relates to a gas absorption system.

Background

At present, the mainstream CO2 capture methods at home and abroad mainly comprise a liquid amine adsorption method, a solid film adsorption method and the like. However, the above-described capture method can capture only CO2 of high concentration, and cannot capture CO2 of a wide concentration range, such as low concentration CO2 in the air.

In the prior art, in order to solve the above problems, a liquid alkaline solution and a solid amine membrane are combined to adsorb CO2. However, in the process of adsorbing CO2 in air or flue gas by using the above method, impurities such as solid particles entrained in air or flue gas may accumulate in the CO2 capture system, which not only affects the capture efficiency of the CO2 capture system, but also requires workers to clean the impurities in the CO2 capture system regularly, thereby increasing the operation and maintenance costs of the CO2 capture system.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a gas absorption system to solve the problem that impurities such as solid particles mixed with in air or the flue gas easily accumulated in CO2 capture system among the prior art.

In order to achieve the above object, the present invention provides a gas absorption system for absorbing carbon dioxide gas in an environment, the gas absorption system comprising: the air inlet and the air outlet are arranged oppositely along the horizontal direction; the gas pretreatment device is arranged in the shell and positioned at the gas inlet so as to be used for filtering impurities in the gas entering the gas inlet; the gas absorption assembly is arranged in the shell and is positioned at the downstream of the gas pretreatment device, the gas absorption assembly comprises a first liquid supply device and a first spraying structure, and the first liquid supply device is communicated with the first spraying structure and is used for providing alkaline solution; the alkaline solution flowing out of the first spraying structure and carbon dioxide in the gas are subjected to chemical reaction to absorb the carbon dioxide; and the gas conveying device is arranged at the gas outlet and/or the gas inlet and is used for conveying the gas out of the gas absorption system through the gas inlet.

Further, the gas absorption assembly comprises: the first filler is positioned below the first spraying structure; the first water collector is arranged opposite to the first filler; the first water collector is positioned between the exhaust port and the first filler; and/or the first water receiver is positioned between the first filler and the gas pretreatment device.

Further, the gas absorption assembly further comprises: the first buffer structure is positioned below the first filler and used for buffering the solution after the solution and the carbon dioxide gas complete a chemical reaction; the number of the first cache structures is one; or, the first cache structures are multiple, and the multiple first cache structures can be selectively used.

Further, the first buffer structure is a plurality of, and the gas absorption assembly further includes: the first end of the first main pipeline is communicated with the first spraying structure; the branch pipelines are arranged in one-to-one correspondence with the first cache structures, and two ends of each branch pipeline are respectively communicated with the corresponding first cache structure and the second end of the first main pipeline; the control valves are arranged in one-to-one correspondence with the branch pipelines, and each control valve controls the on-off state of the corresponding branch pipeline; wherein at any one time, at least one control valve is in an open state.

Further, the gas absorption assembly further comprises: and the first detection device is arranged on the first main pipeline and used for detecting the concentration of carbonate in the solution in the first main pipeline, when the detection value of the first detection device reaches a preset concentration value, the branch pipeline corresponding to the first cache structure which is put into use is controlled to be in a disconnected and connected state through at least one control valve, and at least one other first cache structure is controlled to be put into use through at least one other control valve.

Further, the gas absorption assembly further comprises: the first pump body is arranged on the first main pipeline or the branch pipeline and used for pumping the solution entering the first cache structure into the first spraying structure.

Further, the gas pretreatment device includes: a second filler disposed opposite the air inlet; a second liquid supply device; the second spraying structure is positioned above the second filler, and the second liquid supply device is communicated with the second spraying structure; and the second water collector is arranged opposite to the second filler.

Furthermore, the number of the second water collectors is one; or the number of the second water collectors is multiple, at least one second water collector is positioned on the first side of the second filler, and at least one second water collector is positioned on the second side of the second filler.

Further, the gas pretreatment device further comprises: the second buffer structure is positioned below the second filler and used for buffering liquid flowing out of the second filler; the two ends of the second main pipeline are respectively communicated with the second spraying structure and the second cache structure; and the second pump body is arranged on the second main pipeline and used for pumping the liquid entering the second cache structure into the second spraying structure.

Further, the second cache structure comprises: a cache body; the baffle plate is arranged in the cache body to divide the inner cavity of the cache body into a first sub-containing cavity and a second sub-containing cavity, the first sub-containing cavity is positioned below the second filler, and the second sub-containing cavity is communicated with the second main pipeline; wherein, the baffle has the overflow hole or with buffer memory body between form the overflow portion, first son holds the chamber and holds the chamber intercommunication through overflow hole or overflow portion and second son.

Furthermore, the second filler comprises a plurality of sub-filler pieces, two adjacent sub-filler pieces are arranged in a staggered mode to form a flow passage, and a flow disturbance bulge or a flow disturbance concave part located in the flow passage is arranged on the surface of each sub-filler piece.

Further, the gas delivery device comprises: the fan is arranged at the air outlet; and/or a compressor disposed at the air inlet.

Further, the gas pretreatment device is a filter screen or a filter membrane.

Furthermore, the bottom surface of the first buffer structure is provided with a flow guide inclined plane.

Further, the gas absorption system further comprises: the water turbine is positioned below the first buffer structure, and liquid in the first buffer structure flows to the water turbine through the flow guide inclined plane; and the generator is connected with the water turbine.

Further, the gas absorption system further comprises: and the stirring device is arranged in the first cache structure.

Use the technical scheme of the utility model, gaseous preprocessing device sets up in the casing and is located air inlet department, and gaseous absorption subassembly is located gaseous preprocessing device's low reaches department. Like this, in the gas absorption system operation in-process, air or flue gas get into gas absorption system via the air inlet and pass through gaseous preprocessing device earlier, gaseous preprocessing device filters the impurity in air or the flue gas, and then avoid above-mentioned impurity to pile up in gas absorption system, influence its absorption to carbon dioxide gas, entrapment efficiency in getting into the gas absorption subassembly even, the problem of impurity such as the solid particle that mix with in the air or the flue gas among the prior art easily accumulations in CO2 entrapment system has been solved, and then the operation of gas absorption system, the maintenance cost has been reduced. Meanwhile, the absorption of impurities in air or flue gas can also improve the purity of the solution formed after the chemical reaction of the alkaline solution and carbon dioxide gas, and reduce the cost of the post-treatment process.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a front view of an embodiment of a gas absorption system according to the present invention;

fig. 2 shows a top view of the gas absorption system of fig. 1.

Wherein the figures include the following reference numerals:

10. a housing; 11. an air inlet; 12. an exhaust port; 13. an accommodating chamber; 20. a gas pretreatment device; 21. a second filler; 22. a second spray structure; 23. a second water collector; 24. a second cache structure; 25. a second main pipe; 26. a second pump body; 30. a gas absorption assembly; 31. a first spray structure; 32. a first filler; 33. a first water collector; 34. a first cache structure; 35. a first main pipe; 36. a first pump body; 40. a gas delivery device; 60. an air duct; 70. a gear box.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is to be noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that impurities such as solid particles mixed in air or flue gas are easy to accumulate in a CO2 capture system in the prior art, the application provides a gas absorption system.

As shown in fig. 1 and 2, the gas absorption system is used for absorbing carbon dioxide gas in the environment, and comprises a cabinet 10, a gas pretreatment device 20, a gas absorption assembly 30 and a gas delivery device 40. The casing 10 has an air inlet 11 and an air outlet 12 communicated with each other, and the air inlet 11 is disposed opposite to the air outlet 12. The gas preprocessing device 20 is disposed in the cabinet 10 at the gas inlet 11 for filtering impurities in the gas entering the gas inlet 11. The gas absorption assembly 30 is disposed in the cabinet 10 and downstream of the gas pretreatment device 20, and the gas absorption assembly 30 includes a first liquid supply device and a first spray structure 31, and the first liquid supply device is communicated with the first spray structure 31 for supplying the alkaline solution. The alkaline solution flowing out of the first spray structure 31 chemically reacts with carbon dioxide gas in the gas to absorb the carbon dioxide gas. A gas conveying means 40 is provided at the gas outlet 12 and/or the gas inlet 11 for conveying gas out of the gas absorption system via the gas inlet 11.

With the solution of the present embodiment, the gas pretreatment device 20 is disposed in the cabinet 10 at the gas inlet 11, and the gas absorption assembly 30 is located at the downstream of the gas pretreatment device 20. Like this, in the gas absorption system operation in-process, air or flue gas get into gas absorption system via air inlet 11 and pass through gas preprocessing device 20 earlier afterwards, gas preprocessing device 20 filters the impurity in air or the flue gas, and then avoid above-mentioned impurity to pile up in gas absorption system, influence its absorption to carbon dioxide gas even get into in the gas absorption subassembly 30, capture efficiency, the problem of impurity such as the solid particle that mix with in the air or the flue gas among the prior art easily accumulated in CO2 capture system has been solved, and then gas absorption system's operation, maintenance cost have been reduced. Meanwhile, the purity of the solution formed after the chemical reaction of the alkaline solution and the carbon dioxide gas can be improved by absorbing impurities in the air or the flue gas, and the cost of the post-treatment process is reduced.

Optionally, the gas conveying means 40 comprise a fan arranged at the exhaust 12; and/or, the gas delivery device 40 includes a compressor disposed at the gas inlet. Thus, the fan can suck the gas which is completely absorbed in the gas absorption system out of the gas absorption system, so that the gas can smoothly flow in the gas absorption system. Meanwhile, the compressor is used for compressing the gas at the gas inlet into high-pressure gas and then enabling the gas to enter the gas absorption system, so that the flow rate of the gas is increased, and the CO2 capture efficiency of the gas absorption system is improved.

In the present embodiment, the gas delivery device 40 comprises a fan disposed at the exhaust port 12.

Optionally, the alkaline solution is sodium hydroxide, potassium carbonate, or sodium carbonate, and deionized water may be used to prepare solutions with different concentrations as required.

In the present embodiment, the alkaline solution is used as the absorbent, so that not only the CO2 of high concentration but also the CO2 of low concentration can be captured, thereby capturing the CO2 of wide concentration range.

In this embodiment, the gas absorption system is a cross-flow absorption system, i.e. the air or flue gas intake direction is the same as the exhaust direction.

In this embodiment, the number of the first spraying structures 31 is plural, and the plural first spraying structures 31 are arranged at intervals along the flow direction of the gas in the gas absorption system, so that the spraying amount of the alkaline solution of the first spraying structures 31 is increased, and the alkaline solution sprayed from the first spraying structures 31 can be ensured to be sufficiently trapped and absorbed with CO2 in the air or the flue gas.

Optionally, the first sprinkling structure 31 is a shower head.

Optionally, the gas absorption assembly 30 comprises a first packing 32 and a first water collector 33. The first packing 32 is located below the first shower structure 31. The first water receiver 33 is disposed opposite to the first packing 32. The first water receiver 33 is positioned between the exhaust port 12 and the first filler 32; and/or the first water collector 33 is positioned between the first packing 32 and the gas pretreatment device 20. In this way, the first filler 32 provides a sufficient contact surface for the CO2 and the alkaline solution, so that the CO2 in the air or the flue gas and the alkaline solution can fully react, and the CO2 capturing and absorbing efficiency of the gas absorbing assembly 30 is further improved. The first water collector 33 is used for collecting water vapor in the housing to reduce fine water droplets floating in the gas discharged from the gas outlet 12, and can effectively prevent the loss of liquid water due to the water flying at the gas outlet 12. Simultaneously, the setting position of the first water collector 33 is more flexible due to the arrangement, so that different use requirements and working conditions are met, and the processing flexibility of workers is also improved.

Specifically, the alkaline solution falls in the form of droplets from the first spraying structure 31 into the first filler 32, flows in the form of a liquid film in the first filler 32, passes through the first filler 32, and then falls in the form of droplets into the first buffer structure 34. Impurities carried in the air or the flue gas are removed through the gas pretreatment device 20 and then enter the gas absorption assembly 30, the pretreated gas is fully contacted with an alkaline solution in a water spraying area of the gas absorption assembly 30 and the first filler 32, so that CO2 in the air or the flue gas is subjected to a chemical reaction with the alkaline solution, CO2 is captured, the captured CO2 exists in the first buffer structure 34 in the form of carbonate and bicarbonate ions, and the reacted solution is conveyed to a subsequent process system through the first pump body 36 for treatment. Meanwhile, the first buffer structure 34 is equipped with a first liquid supply device to replenish water and hydroxyl ions consumed in the solution.

In the present embodiment, the first water collector 33 is located between the exhaust port 12 and the first packing 32 to collect fine water droplets drifting away from the gas exhausted from the exhaust port 12.

It should be noted that the setting position of the first water receiver 33 is not limited to this, and may be adjusted according to the working condition and the use requirement.

In other embodiments not shown in the drawings, the first water collector 33 is located between the first packing 32 and the gas pretreatment device 20.

In other embodiments not shown in the drawings, the first water collectors 33 are plural, at least one first water collector 33 is located between the exhaust port 12 and the first packing 32, and at least one first water collector 33 is located between the first packing 32 and the gas pretreatment device 20, so as to sufficiently recover the water vapor in the cabinet 10.

Optionally, the first filler 32 is a film-type water-spraying filler with a length of 0.1-15 m.

Optionally, the first water collector 33 is a PVC water collector, the length of the PVC water collector is 0.1-1 m, and the first water collector 33 is supported in a bracket manner.

As shown in fig. 1, the gas absorption assembly 30 further comprises a first buffer structure 34. The first buffer structure 34 is located below the first filler 32 for buffering the solution after the chemical reaction with the carbon dioxide gas. Therefore, the solution after the chemical reaction with the carbon dioxide gas is stored through the first buffer structure 34, which is convenient for post-processing the solution on the one hand; on the other hand, the recycling of the solution can be realized, so that the waste of resources is avoided.

In this embodiment, the first buffer structure 34 and the first liquid supply device are of the same structure, at the initial stage of operation of the gas absorption system, an alkaline solution is placed in the first buffer structure 34, the alkaline solution is sprayed to the first filler 32 through the first spraying structure 31 to react with CO2 in air or flue gas, the solution after the reaction is buffered in the first buffer structure 34, so as to enter the first spraying structure 31 again to continue spraying, so that the alkaline solution is recycled, until carbonate in the alkaline solution reaches a preset concentration value, at this time, the capture and absorption of CO2 are stopped, and the solution in the first buffer structure 34 is replaced with the alkaline solution.

It should be noted that, the relationship between the first buffer structure 34 and the first liquid supply device is not limited thereto, and may be adjusted according to the working condition and the use requirement. Optionally, the first buffer structure 34 is communicated with the first liquid supply device to supply an alkaline solution into the first spraying structure 31 through the first liquid supply device, and the solution after reaction with CO2 is buffered in the first buffer structure 34 so as to enter the first spraying structure 31 again to continue spraying.

Optionally, there is one first cache structure 34; alternatively, the number of the first cache structures 34 is plural, and the plural first cache structures 34 can be selectively used. In this way, in the operation process of the gas absorption system, the use state (in use or not in use) of the first buffer structure 34 can be adjusted according to the carbonate concentration in the first buffer structure 34, so as to supplement a fresh alkaline solution into the first spraying structure 31, and realize the rapid and efficient capture of CO2 by the gas absorption system.

Optionally, there are a plurality of first buffer structures 34, and the gas absorption assembly 30 further includes a first main pipe 35, a plurality of branch pipes, and a plurality of control valves. A first end of the first main pipe 35 communicates with the first sprinkling structure 31. The plurality of branch pipelines and the plurality of first buffer structures 34 are arranged in a one-to-one correspondence manner, and two ends of each branch pipeline are respectively communicated with the second ends of the corresponding first buffer structures 34 and the second ends of the first main pipelines 35. The control valves are arranged in one-to-one correspondence with the branch pipelines, and each control valve controls the on-off state of the corresponding branch pipeline. Wherein at any one time, at least one control valve is in an open state. Therefore, the on-off state of the branch pipeline corresponding to the control valve is controlled through the control valve to control the use state of the first cache structure 34 communicated with the branch pipeline, so that the control of the use state of the first cache structure 34 by a worker is easier and simpler, and the control difficulty is reduced. Meanwhile, the first buffer structures 34 are arranged in parallel, and at any time, at least one first buffer structure 34 is controlled to be put into use to provide the alkaline solution for the first spraying structures 31.

Optionally, the gas absorption assembly 30 further comprises a first detection device. The first detection device is arranged on the first main pipeline 35 and used for detecting the concentration of carbonate in the solution in the first main pipeline 35, when the detection value of the first detection device reaches a preset concentration value, the branch pipeline corresponding to the first buffer structure 34 which is put into use is controlled to be in a disconnected connection state through at least one control valve, and at least one other first buffer structure 34 is controlled to be put into use through at least one other control valve. In this way, in the operation process of the gas absorption system, if the detection value of the first detection device reaches the preset concentration value, it is determined that the CO2 capturing and absorbing capacity of the alkaline solution in the first buffer structure 34 put into use cannot meet the use requirement of the gas absorption system, and at this time, the first buffer structure 34 put into use is replaced to improve the stability of the CO2 capturing and absorbing capacity of the gas absorption system.

As shown in fig. 1 and 2, the gas absorption assembly 30 further includes a first pump body 36. Wherein, the first pump body 36 is disposed on the first main pipeline 35 or the branch pipeline, for pumping the solution entering the first buffer structure 34 into the first spraying structure 31. Like this, pump the solution through first pump body 36 in to first spray structure 31 to ensure that first spray structure 31 can spray out alkaline solution and react with CO2, and then promoted first spray structure 31 spray the reliability, promoted gas absorption system's operational reliability.

Optionally, the first pump body 36 is a circulation pump.

As shown in fig. 1 and fig. 2, the gas pretreatment device 20 includes a second filler 21, a second liquid supply device, a second spraying structure 22, and a second water collector 23. Wherein the second filler 21 is disposed opposite to the intake port 11. The second spraying structure 22 is positioned above the second filler 21, and the second liquid supply device is communicated with the second spraying structure 22. The second water receiver 23 is disposed opposite to the second packing 21. Specifically, the second spraying structure 22 is used for spraying water, and in the process that the gas pretreatment device 20 filters impurities in the air or the flue gas, sufficient contact surfaces are provided for the impurities and the water in the air or the flue gas through the second filler 21, so that the water can sink the impurities, and then the impurities are prevented from entering the gas absorption assembly 30. The second water collector 23 is used for collecting water vapor in the housing to reduce fine water droplets drifting in the gas discharged from the gas outlet 12, and can effectively prevent the loss of liquid water due to the water flying phenomenon at the gas outlet 12.

Specifically, after passing through the gas pretreatment device 20, the humidity of the gas can be increased, the evaporation capacity of water in the gas absorption system can be reduced, the loss of deionized water can be reduced, and the cost of CO2 capture can be reduced.

In this embodiment, the second liquid supply device is used for supplying tap water.

Optionally, the second spray structure 22 is a showerhead.

Optionally, the second packing 21 is a film type trickle packing.

Optionally, the second water collector 23 is a PVC water collector.

Optionally, there is one second water collector 23; or, there are a plurality of second water collectors 23, at least one second water collector 23 is located on the first side of the second packing 21, and at least one second water collector 23 is located on the second side of the second packing 21. Like this, above-mentioned setting makes the number of second water receiver 23 select more nimble to satisfy different user demand and operating mode, also promoted staff's processing flexibility. Meanwhile, the plurality of second water collectors 23 can improve the water vapor recovery efficiency, and further prevent the loss of liquid water due to the water splashing at the exhaust port 12.

In this embodiment, there are two second water collectors 23, one second water collector 23 is located on a first side of the second packing 21, and the other second water collector 23 is located on a second side of the second packing 21, so as to sufficiently recover water vapor in the casing.

It should be noted that the number of the second water collectors 23 is not limited to this, and may be adjusted according to the working condition and the use requirement. Alternatively, the second water collectors 23 are three, and four, and five, and a plurality.

As shown in fig. 1 and 2, the gas pretreatment device 20 further includes a second buffer structure 24, a second main pipe 25, and a second pump 26. Wherein the second buffer structure 24 is located below the second filler 21 for buffering liquid flowing out through the second filler 21. Two ends of the second main pipeline 25 are respectively communicated with the second spraying structure 22 and the second cache structure 24. A second pump body 26 is provided on the second main conduit 25 for pumping liquid entering the second buffer structure 24 into the second spray structure 22. In this way, the water left from the second filling 21 is stored by the second buffer structure 24, so as to realize the recycling of the water, and avoid the waste of resources. Meanwhile, water is pumped into the second spraying structure 22 through the second pump body 26, so that the second spraying structure 22 can spray water to sink impurities, the spraying reliability of the second spraying structure 22 is improved, and the operation reliability of the gas pretreatment device 20 is improved.

Optionally, the second cache structure 24 comprises a cache body and a partition. Wherein, the baffle setting is internal at the cache body to separate the inner chamber of cache body for first son holds the chamber and the chamber is held to the second son, and first son holds the chamber and is located the second below of packing 21, and the second son holds chamber and second main pipeline 25 intercommunication. Wherein, the baffle has the overflow hole or with buffer memory body between form the overflow portion, first son holds the chamber and holds the chamber intercommunication through overflow hole or overflow portion and second son. Like this, the aforesaid setting of baffle ensures that the impurity that gets into first son after the second sprays structure 22 sprays and holds the intracavity fully deposits in first son holds the intracavity, avoids impurity to get into and causes the second in the second main pipeline 25 to spray structure 22 and blocks up, has promoted the second and has sprayed structure 22's the efficiency of spraying. Simultaneously, above-mentioned setting makes the overflow mode of liquid in second buffer memory structure 24 more diversified to satisfy different user demand and operating mode, also promoted staff's processing flexibility.

Alternatively, the length of the second filler 21 is greater than or equal to 0.1m and less than or equal to 15m.

In the present embodiment, the length of the second filler 21 is 8m, which reduces the processing cost of the second filler 21.

It should be noted that the length of the second filler 21 is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the length of the second filler 21 is 5m, or 10m, or 12m, or 13m.

Optionally, the second filler 21 includes a plurality of sub filler pieces, two adjacent sub filler pieces are staggered to form a flow passage, and a flow disturbing protrusion or a flow disturbing recess located in the flow passage is provided on a surface of each sub filler piece. In this way, the gas and the liquid mixed with impurities are collected in the flow passage, and the turbulence protrusion or the turbulence concave part is arranged to enable the gas to generate turbulence at the position, so that the contact area of the gas and the liquid is further increased, and the impurities mixed in the gas are ensured to be contacted with the liquid as much as possible and to be impacted into the second buffer structure 24 by the liquid.

In other embodiments not shown in the drawings, the gas pretreatment device 20 is a filter screen or membrane. Thus, the above arrangement reduces the processing cost and processing difficulty of the gas pretreatment device 20.

Optionally, the bottom surface of the first buffer structure 34 has a flow guiding slope. Thus, the solution is collected to a relatively lower position on the bottom surface in the first buffer structure 34 by the arrangement, so that the solution can conveniently enter the first main pipeline 35, and the problem that the solution is accumulated at a dead angle in the first buffer structure 34 to increase the cleaning difficulty of workers is avoided.

In this embodiment, the bottom surface of the first buffer structure 34 is an inclined surface. Thus, the arrangement makes the bottom surface of the first buffer structure 34 easier to process and implement, and reduces the processing cost of the gas absorption system.

In other embodiments not shown in the drawings, the bottom surface of the first buffer structure 34 is a conical surface.

In this embodiment, the second buffer structure 24 and the second liquid supply device are the same structure, so as to reduce the number of structures of the gas absorption system, and facilitate the worker to disassemble, assemble and maintain the gas absorption system.

It should be noted that, the relationship between the second buffer structure 24 and the second liquid supply device is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the second buffer structure 24 communicates with a second liquid supply device to supply water into the second spraying structure 22 through the second liquid supply device, and water and impurities left from the second filler 21 are buffered in the second buffer structure 24 so as to enter the second spraying structure 22 again to continue spraying.

Optionally, the gas absorption assembly 30 further includes a first liquid level meter, the first liquid level meter is disposed in the first buffer structure 34 and used for detecting a height of the solution in the first buffer structure 34, when the liquid level is lower than a first level value, the first buffer structure 34 is replenished with water by a water replenishing pump, and when the liquid level reaches a preset liquid level, the water replenishment is stopped.

Optionally, the gas pretreatment device 20 further includes a second liquid level meter, the second liquid level meter is arranged in the second buffer structure 24 and is used for detecting the water level of the second buffer structure 24, when the liquid level is lower than the second liquid level value, the water is supplied to the second buffer structure 24 by the water supply pump, and when the liquid level reaches the preset liquid level, the water supply is stopped.

As shown in fig. 1 and 2, the cabinet 10 has a receiving chamber 13, and the gas absorption assembly 30 is located in the receiving chamber 13. The gas absorption system further includes an air duct 60 and a gear box 70. Wherein, the air duct 60 is connected to the casing 10 and located at the air outlet 12 for guiding the air exhausted from the air outlet. The gear box 70 is drivingly connected to the fan to drive the fan in operation.

In this embodiment, the total length of the gas absorption system is 5-20 m, and the air is supplied to one side, and the size of the supplied air is 0.6 × 0.6-10 × 10m. The first buffer structure 34 is adjacent to the second buffer structure 24 and separated by concrete, and the first buffer structure 34 is internally treated with corrosion prevention.

Optionally, one first filler 32; alternatively, the first packing 32 may be provided in plural, and the plural first packings 32 may be provided at intervals along the longitudinal direction of the gas absorption system.

Optionally, one second filler 21; alternatively, the first packing 32 may be provided in plural, and the plural first packings 32 may be provided at intervals along the longitudinal direction of the gas absorption system.

Optionally, the spraying density of the first spraying structure 31 is 0-20 m ³ /m ² * h, and deionized water is used.

Optionally, the gas absorption system further comprises a water turbine and a generator. Wherein, the hydraulic turbine is located the below of first buffer structure 34, and the liquid that is located first buffer structure 34 flows to the hydraulic turbine through the water conservancy diversion inclined plane. The generator is connected with the water turbine. Therefore, in the operation process of the gas absorption system, the water turbine is driven to rotate by the liquid potential energy, and the power generation function of the generator is further realized, the generator can supply power to the first pump body 36 and the second pump body 26, so that the liquid potential energy is recycled, and the overall energy consumption of the gas absorption system is also reduced.

Optionally, the gas absorption system further comprises a stirring device. Wherein the stirring means is arranged within the first buffer structure 34. Thus, the above arrangement of the stirring device makes the mixing of the fresh water and the fresh lye more uniform.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the gas pretreatment device is arranged in the machine shell and positioned at the gas inlet, and the gas absorption assembly is positioned at the downstream of the gas pretreatment device. Like this, in the gas absorption system operation in-process, air or flue gas get into gas absorption system via the air inlet and pass through gaseous preprocessing device earlier, gaseous preprocessing device filters the impurity in air or the flue gas, and then avoid above-mentioned impurity to pile up in gas absorption system, influence its absorption to carbon dioxide gas, entrapment efficiency in getting into the gas absorption subassembly even, the problem of impurity such as the solid particle that mix with in the air or the flue gas among the prior art easily accumulations in CO2 entrapment system has been solved, and then the operation of gas absorption system, the maintenance cost has been reduced. Meanwhile, the absorption of impurities in air or flue gas can also improve the purity of the solution formed after the chemical reaction of the alkaline solution and carbon dioxide gas, and reduce the cost of the post-treatment process.

It is to be understood that the above-described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas absorption system for absorbing carbon dioxide gas in an environment, the gas absorption system comprising:

a housing (10) having an air inlet (11) and an air outlet (12) communicating with each other, the air inlet (11) and the air outlet (12) being disposed opposite to each other in a horizontal direction;

a gas pre-treatment device (20), the gas pre-treatment device (20) being arranged inside the enclosure (10) at the gas inlet (11) for filtering impurities in the gas entering the gas inlet (11);

a gas absorption assembly (30) disposed within the enclosure (10) downstream of the gas pretreatment device (20), the gas absorption assembly (30) including a first liquid supply device and a first spray structure (31), the first liquid supply device being in communication with the first spray structure (31) for providing an alkaline solution; the alkaline solution flowing out of the first spraying structure (31) chemically reacts with carbon dioxide gas in the gas to absorb the carbon dioxide gas;

a gas delivery device (40), the gas delivery device (40) being arranged at the gas outlet (12) and/or the gas inlet (11) for delivering gas out of the gas absorption system via the gas inlet (11).

2. The gas absorption system according to claim 1, wherein the gas absorption assembly (30) comprises:

a first packing (32) located below the first sprinkling structure (31);

a first water collector (33) disposed opposite to the first packing (32); the first water collector (33) is positioned between the exhaust port (12) and the first packing (32); and/or the first water collector (33) is positioned between the first filler (32) and the gas pretreatment device (20).

3. The gas absorption system according to claim 2, wherein the gas absorption assembly (30) further comprises:

a first buffer structure (34), wherein the first buffer structure (34) is positioned below the first filler (32) and is used for buffering the solution after the chemical reaction with the carbon dioxide gas is completed; wherein the first cache structure (34) is one; alternatively, the number of the first cache structures (34) is plural, and the plural first cache structures (34) can be selectively used.

4. A gas absorption system according to claim 3, wherein the first buffer structure (34) is plural, the gas absorption assembly (30) further comprising:

a first main pipeline (35), wherein a first end of the first main pipeline (35) is communicated with the first spraying structure (31);

the branch pipelines are arranged in one-to-one correspondence with the first cache structures (34), and two ends of each branch pipeline are respectively communicated with the second ends of the corresponding first cache structures (34) and the first main pipeline (35);

the control valves are arranged in one-to-one correspondence with the branch pipelines, and each control valve controls the on-off state of the corresponding branch pipeline;

wherein at any one time at least one of the control valves is in an open state.

5. The gas absorption system according to claim 4, wherein the gas absorption assembly (30) further comprises:

and the first detection device is arranged on the first main pipeline (35) and used for detecting the concentration of carbonate in the solution in the first main pipeline (35), when the detection value of the first detection device reaches a preset concentration value, the branch pipeline corresponding to the first buffer structure (34) which is put into use is controlled to be in a disconnected state by at least one control valve, and at least one other first buffer structure (34) is controlled to be put into use by at least one other control valve.

6. The gas absorption system according to claim 4, wherein the gas absorption assembly (30) further comprises:

a first pump body (36) arranged on the first main pipeline (35) or the branch pipeline for pumping the solution entering the first buffer structure (34) into the first spraying structure (31).

7. The gas absorption system according to claim 1, wherein the gas pretreatment device (20) comprises:

a second filler (21) disposed opposite the air inlet (11);

a second liquid supply device;

the second spraying structure (22) is positioned above the second filler (21), and the second liquid supply device is communicated with the second spraying structure (22);

and a second water collector (23) arranged opposite to the second filler (21).

8. The gas absorption system according to claim 7, wherein the second water collector (23) is one; or a plurality of second water collectors (23) are arranged, at least one second water collector (23) is positioned on the first side of the second filling material (21), and at least one second water collector (23) is positioned on the second side of the second filling material (21).

9. The gas absorption system according to claim 7, wherein the gas pretreatment device (20) further comprises:

a second buffer structure (24), the second buffer structure (24) being located below the second packing (21) for buffering liquid flowing out through the second packing (21);

the two ends of the second main pipeline (25) are respectively communicated with the second spraying structure (22) and the second cache structure (24);

a second pump body (26) arranged on the second main pipeline (25) for pumping the liquid entering the second buffer structure (24) into the second spraying structure (22).

10. The gas absorption system according to claim 9, wherein the second buffer structure (24) comprises:

a cache body;

the partition plate is arranged in the cache body to divide the inner cavity of the cache body into a first sub-containing cavity and a second sub-containing cavity, the first sub-containing cavity is positioned below the second filler (21), and the second sub-containing cavity is communicated with the second main pipeline (25); the partition plate is provided with an overflow hole or an overflow part is formed between the partition plate and the cache body, and the first sub-containing cavity is communicated with the second sub-containing cavity through the overflow hole or the overflow part.

11. The gas absorption system according to claim 7, wherein the second packing (21) comprises a plurality of sub-packing pieces, two adjacent sub-packing pieces are staggered and form a flow passage, and a flow disturbing protrusion or a flow disturbing recess is arranged on the surface of each sub-packing piece and positioned in the flow passage.

12. The gas absorption system according to claim 1, wherein the gas delivery device (40) comprises:

a fan disposed at the exhaust port (12); and/or the presence of a gas in the atmosphere,

and the compressor is arranged at the air inlet.

13. The gas absorption system according to claim 1, wherein the gas pretreatment device (20) is a filter screen or a filter membrane.

14. A gas absorption system according to claim 3, wherein the bottom surface of the first buffer structure (34) has a flow guiding slope.

15. The gas absorption system according to claim 14 further comprising:

the water turbine is positioned below the first buffer structure (34), and liquid in the first buffer structure (34) flows to the water turbine through the diversion inclined plane;

and the generator is connected with the water turbine.

16. The gas absorption system of claim 3 further comprising:

and the stirring device is arranged in the first buffer structure (34).