Flue gas CO2 capturing, purifying and energy storing device

Abstract

The utility model provides a flue gas CO2 trapping, purifying and energy storing device which comprises a flue gas inlet pipe, the flue gas inlet pipe is connected with a dust removing device, the dust removing device comprises a dust removing box, a double-layer filter frame is arranged in the dust removing box, asbestos filter screens are arranged in the filter frames, a plurality of crossed auxiliary filter frames are further fixedly arranged between the filter frames, and the asbestos filter screens are arranged in the auxiliary filter frames. An auxiliary asbestos filter screen is arranged in the auxiliary filter frame, a refrigeration box is arranged on one side of the dust removal box, an air inlet pipe penetrating into the refrigeration box is arranged on one side of the dust removal box, and a plurality of branch pipes are arranged on the air inlet pipe. The device has the beneficial effects that carbon dioxide is captured, the emission of CO2 is reduced, the carbon is assisted to neutralize the carbon to the peak, the purity of the existing carbon capture technology is not high, high-purity CO2 is produced, the subsequent utilization is facilitated, a large amount of energy is stored by using the high-purity CO2, the energy can be used for energy peak regulation, and the subsequent secondary utilization energy consumption is reduced.

Description

Technical Field

[0001] The utility model discloses a flue gas CO2 capture, purification and energy storage device, belonging to the field of flue gas energy storage. Background Art

[0002] Carbon capture technology mainly refers to the process of capturing carbon dioxide from emission sources such as industrial production, energy utilization and the atmosphere, and separating, collecting and compressing the captured carbon dioxide. According to the order of carbon source capture and combustion process, carbon capture technology can be divided into post-combustion capture, pre-combustion capture, oxygen-enriched combustion, and air capture. Post-combustion capture refers to the process of separating and collecting carbon dioxide from flue gas emitted by emission sources (such as power plants, steel mills and refineries, etc.). The main ways to capture carbon dioxide are chemical absorption, physical absorption and membrane separation. Among them, chemical absorption is to contact carbon dioxide with a chemical absorbent and absorb carbon dioxide into the absorbent. It is a widely used method for carbon dioxide capture. The present application proposes a device for capturing, purifying and storing CO2 in flue gas. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a flue gas CO2 capture, purification and energy storage device.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A flue gas CO2 capture and purification energy storage device, comprising a smoke inlet pipe, the smoke inlet pipe is connected to a dust removal device, the dust removal device comprises a dust removal box, a double-layer filter frame is arranged in the dust removal box, asbestos filter screens are arranged in the filter frames, a plurality of cross-shaped auxiliary filter frames are fixed between the filter frames, auxiliary asbestos filter screens are arranged in the auxiliary filter frames, a refrigeration box is arranged on one side of the dust removal box, an air inlet pipe that penetrates into the refrigeration box is arranged on one side of the dust removal box, a plurality of branch pipes are arranged on the air inlet pipe, and the other ends of the branch pipes are connected to refrigeration pipes, and the refrigeration pipes The top ends are connected with auxiliary refrigeration pipes through vertical pipes, and the other ends of the auxiliary refrigeration pipes and the refrigeration pipes are provided with outlet pipes passing through the refrigeration box. The refrigeration box is provided with a refrigeration assembly, and the outlet pipes are connected with an air-water separator, and the air-water separator is connected with a purification device through a flue gas pipe, and the purification device is connected with a primary separation and concentration device through a fan, and the primary separation and concentration device is connected with a secondary separation and concentration device, and the secondary separation and concentration device is connected with an intermediate storage tank, and the intermediate storage tank is provided with a compressor, and the intermediate storage tank is connected with a purification tower, and a circulating pump is provided on the purification tower.

[0006] Furthermore, a mounting plate is fixedly provided on the top of the filter frame, the mounting plate is fixed to the outer top of the dust removal box with screws, and a U-shaped sealing ring is fixedly provided on the bottom of the mounting plate.

[0007] Furthermore, the auxiliary refrigeration pipe and the refrigeration pipe are both provided with wind shields, and the wind shields are evenly provided with ventilation holes.

[0008] Furthermore, the refrigeration component includes an auxiliary circulation pump and a refrigerator fixed on the outer wall of the refrigeration box, the input end of the refrigerator is provided with a pipe 1 that passes through the bottom of the refrigeration box, the output end of the refrigerator is connected to the auxiliary circulation pump through a pipe 2, and the output end of the auxiliary circulation pump is provided with a pipe 3 that passes through the top of the refrigeration box.

[0009] Furthermore, a bellows is fixedly provided on the outer wall of the refrigeration box, an auxiliary fan is fixedly provided in the bellows through a bracket, a cooling pipe is provided on the bellows and penetrates into the interior of the refrigeration box, a U-shaped auxiliary cooling pipe is connected to the bottom end of the cooling pipe, the auxiliary cooling pipe is located at the bottom of the refrigeration box, a final outlet pipe is provided at the bottom end of the auxiliary cooling pipe, and the other end of the final outlet pipe is connected to the purification tower.

[0010] Furthermore, the purification tower is connected to a liquid CO2 storage tank, and the compressor is arranged between the secondary separation and concentration device and the intermediate storage tank.

[0011] Furthermore, a drain pipe with a control valve is provided at the bottom of the gas-water separator, and separation blades are provided in the gas-water separator. The purification device includes a first purification box and a second purification box. A multi-layer activated carbon mesh is installed in the first purification box. The first purification box and the second purification box are connected to each other. A spray pump is provided on the outer wall of the second purification box, and a spray pipe is provided on the spray pump. The other end of the spray pipe passes into the second purification box and is provided with a spray plate with spray holes.

[0012] Furthermore, an exhaust port is provided at the top of the purification tower, and an outlet is provided at the bottom of the purification tower. A first packing layer and a second packing layer are arranged inside the purification tower. The outlet is provided with a control valve and is connected to the liquid CO2 storage tank. Both the first packing layer and the second packing layer are stainless steel metal rolled corrugated packings. The circulation pump is installed on the outer wall of the purification tower, and a circulation pipe is provided on the circulation pump.

[0013] The beneficial effects of the utility model are: the utility model can capture carbon dioxide, reduce CO2 emissions, and help achieve carbon neutrality and carbon peak; it solves the problem of low purity of existing carbon capture technology and realizes high-purity CO2 production. High-purity CO2 stores a large amount of energy and can be used for energy peak regulation; it reduces the energy consumption of subsequent secondary utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a front view of a flue gas CO2 capture, purification and energy storage device of the utility model;

[0016] Figure 2 This is a schematic diagram of a filter frame of a flue gas CO2 capture, purification and energy storage device of the utility model;

[0017] Figure 3 This is a schematic diagram of the interior of a refrigeration box of a flue gas CO2 capture, purification and energy storage device of the utility model;

[0018] Figure 4 This is a schematic diagram of the interior of a secondary refrigeration tube of a flue gas CO2 capture, purification and energy storage device of the utility model.

[0019] In the figure: 1. Smoke inlet pipe; 2. Dust removal box; 3. Filter rack; 4. Asbestos filter; 5. Auxiliary filter rack; 6. Auxiliary asbestos filter; 7. Refrigeration box; 8. Inlet pipe; 9. Refrigeration pipe; 10. Auxiliary refrigeration pipe; 11. Outlet pipe; 12. Gas-water separator; 13. Smoke pipe; 14. Purification device; 15. Fan; 16. Primary separation and concentration device; 17. Secondary separation and concentration device; 18. Intermediate storage tank; 19. Compressor; 20. Purification tower; 21. Circulation pump ; 22. Mounting plate; 23. Sealing ring; 24. Wind shield; 25. Ventilation hole; 26. Auxiliary circulation pump; 27. Refrigerator; 28. Pipeline one; 29. ​​Pipeline three; 30. Bellows; 32. Cooling pipeline; 33. Auxiliary cooling pipeline; 34. Final outlet pipe; 35. Liquid CO2 storage tank; 36. Activated carbon mesh; 37. Spray pump; 38. Spray plate; 39. Exhaust port; 40. Exit; 41. First packing layer; 42. Second packing layer; 43. Circulation pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4The utility model provides a technical solution: a flue gas CO2 capture and purification energy storage device, comprising a smoke inlet pipe 1, the smoke inlet pipe 1 is connected to a dust removal device, the dust removal device comprises a dust removal box 2, a double-layer filter frame 3 is arranged in the dust removal box 2, asbestos filter screens 4 are arranged in the filter frames 3, a plurality of cross-shaped auxiliary filter frames 5 are fixed between the filter frames 3, auxiliary asbestos filter screens 6 are arranged in the auxiliary filter frames 5, a refrigeration box 7 is arranged on one side of the dust removal box 2, an air intake pipe 8 that penetrates into the refrigeration box 7 is arranged on one side of the dust removal box 2, a plurality of branch pipes are arranged on the air intake pipe 8, and the other ends of the branch pipes are connected to refrigeration pipes 9, and the tops of the refrigeration pipes 9 are connected to the refrigeration pipes 9. The vertical pipe is connected to an auxiliary refrigeration pipe 10, and the other ends of the auxiliary refrigeration pipe 10 and the refrigeration pipe 9 are both provided with an outlet pipe 11 that passes through the refrigeration box 7, and a refrigeration assembly is provided on the refrigeration box 7. The outlet pipe 11 is connected to an air-water separator 12, and the air-water separator 12 is connected to a purification device 14 through a flue gas pipe 13. The purification device 14 is connected to a primary separation and concentration device 16 through a fan 15. The primary separation and concentration device 16 is connected to a secondary separation and concentration device 17, and the secondary separation and concentration device 17 is connected to an intermediate storage tank 18, and the intermediate storage tank 18 has a compressor 19, and the intermediate storage tank 18 is connected to a purification tower 20, and a circulating pump 21 is provided on the purification tower 20.

[0022] See also Figure 1-2 A mounting plate 22 is fixedly provided on the top of the filter frame 3, and the mounting plate 22 is fixed to the outer top of the dust removal box 2 with screws. A U-shaped sealing ring 23 is fixedly provided on the bottom of the mounting plate 22, and the mounting plate 22 is fixed to the outer top of the dust removal box 2 with screws. The sealing ring 23 is of an extrusion type and is located between the mounting plate 22 and the outer top of the dust removal box 2 to ensure the sealing performance of the installation.

[0023] See also Figure 4 The auxiliary refrigeration pipe 10 and the refrigeration pipe 9 are both provided with wind shields 24, and ventilation holes 25 are evenly opened on the wind shields 24. When smoke enters the auxiliary refrigeration pipe 10 and the refrigeration pipe 9, it is effectively blocked by the wind shields 24, so that its flow rate is slowed down, thereby improving its refrigeration effect.

[0024] See also Figure 1The refrigeration component includes an auxiliary circulation pump 26 and a refrigerator 27 fixed on the outer wall of the refrigeration box 7. The input end of the refrigerator 27 is provided with a pipe 28 that penetrates into the bottom of the refrigeration box 7. The output end of the refrigerator 27 is connected to the auxiliary circulation pump 26 through a pipe 2. The output end of the auxiliary circulation pump 26 is provided with a pipe 3 29 that penetrates into the top of the refrigeration box 7. The water inside the refrigeration box 7 can be drawn into the refrigerator through the pipe 28, and then the refluxed water is cooled to a certain extent through the refrigerator. The auxiliary circulation pump 26 and the pipe 3 cooperate with each other to transport the refrigerated water to the inside of the refrigeration box 7 again, so that the water is recycled. The refrigerated water can cool the cooled hot water to ensure the recycling of cold water.

[0025] See also Figure 1 and Figure 3 A bellows 30 is fixedly provided on the outer wall of the refrigeration box 7, and an auxiliary fan is fixedly provided in the bellows 30 through a bracket. A cooling pipe 32 is provided on the bellows 30 and penetrates into the interior of the refrigeration box 7. A U-shaped auxiliary cooling pipe 33 is connected to the bottom end of the cooling pipe 32. The auxiliary cooling pipe 33 is located at the bottom of the refrigeration box 7. A final outlet pipe 34 is provided at the bottom end of the auxiliary cooling pipe 33. The other end of the final outlet pipe 34 is connected to the purification tower 20. Liquid CO2 circulates in the purification tower. At the same time, the auxiliary fan draws external wind into the auxiliary cooling pipe 33, the auxiliary cooling pipe 33 and the final outlet pipe 34. The wind inside the auxiliary cooling pipe 33 and the auxiliary cooling pipe 33 generates refrigeration, and the cold wind also enters the purification tower to condense CO2, which is beneficial to purification.

[0026] See also Figure 1 The purification tower 20 is connected to the liquid CO2 storage tank 35, and the compressor 19 is arranged between the secondary separation and concentration device 17 and the intermediate storage tank 18.

[0027] See also Figure 1A drain pipe with a control valve is provided at the bottom of the gas-water separator 12, and separation blades are provided in the gas-water separator 12. The purification device 14 includes a first purification box and a second purification box. A multi-layer activated carbon mesh plate 36 is installed in the first purification box. The first purification box and the second purification box are connected to each other. A spray pump 37 is provided on the outer wall of the second purification box. A spray pipe is provided on the spray pump 37. The other end of the spray pipe penetrates into the second purification box and is provided with a spray plate 38 with a spray hole. When the flue gas enters the first purification box, the flue gas can be preliminarily filtered and purified by the activated carbon mesh plate 36. When the flue gas enters the second purification box, the purification materials in the second purification box, including but not limited to alkaline solutions, can be transported to the spray plate through the spray pump 37 in cooperation with the work of the spray pipe, and a large amount of acidic substances in the flue gas are subjected to acid-base neutralization treatment, thereby improving the purification effect of the flue gas.

[0028] Note that the purified liquid needs to be stored in a separate storage box, and the spray pump 37 absorbs the purified liquid inside. A pipeline needs to be designed at the bottom of the second purification box to discharge the sprayed purified liquid along the pipeline, and then a collection box is set up for collection.

[0029] See also Figure 1 The top of the purification tower 20 is provided with an exhaust port 39, and the bottom of the purification tower 20 is provided with an outlet 40. The inside of the purification tower 20 is provided with a first packing layer 41 and a second packing layer 42. The outlet 40 is provided with a control valve and is connected to the liquid CO2 storage tank 35. The first packing layer 41 and the second packing layer 42 are both stainless steel metal rolled corrugated packings. The circulating pump 21 is installed on the outer wall of the purification tower 20, and a circulating pipe 43 is provided on the circulating pump 21.

[0030] The liquid carbon dioxide enters the purification tower for further purification. The liquid carbon dioxide flows into the packing layer. The liquid carbon dioxide uses its own gravity to reflux in the tower, and cooperates with the circulation pump 21 for circulation purification.

[0031] During specific operation, industrial flue gas containing CO2 is drawn out from the front of the chimney, first passes through the smoke inlet pipe 1 and enters the dust removal box 2, the auxiliary asbestos filter 6 and the asbestos filter 4 facilitate the filtration of the flue gas to prevent the residual carbon particles and dust impurities in the flue gas from being directly discharged into the air, and the flue gas after completion is cooled by the refrigeration component, and the flue gas enters the auxiliary refrigeration pipe 10 and the refrigeration pipe 9, and the cold water inside the refrigeration box 7 condenses the water vapor in the flue gas, and the cooled flue gas enters the gas-water separator 12 for separation, and the condensed water in the flue gas is separated, and then the flue gas enters the purification device 14 , the impurity gas in the flue gas is further removed, the purified flue gas enters the fan 15 for pressurization, and then enters the primary separation and concentration device 16 for preliminary separation and concentration, the concentrated gas enters the secondary separation and concentration device 17, the concentrated CO2-rich gas enters the intermediate storage tank 18 for buffering, and then is pressurized and liquefied by the compressor 19 to store a large amount of energy, the liquefied carbon dioxide enters the purification tower 20 for circulation and purification, the liquid CO2 circulates in the purification tower through the circulation pump 21, the purified CO2 is liquid, and is stored in the liquid CO2 storage tank 35.

[0032] The flow dividing blades in the gas-water separator 12 are existing structures inside the gas-water separator and will not be described in detail here. The blades are made of stainless steel.

[0033] The primary separation and concentration device 16 is a first pressure swing adsorption, and the secondary separation and concentration device 17 is a second pressure swing adsorption tower. The flue gas is passed into the first pressure swing adsorption tower for a first pressure swing adsorption treatment to obtain a primary decarbonized gas and a primary carbon dioxide concentrated gas. The primary carbon dioxide concentrated gas is then passed into the second pressure swing adsorption tower for a second pressure swing adsorption treatment to obtain a secondary decarbonized gas and a secondary carbon dioxide concentrated gas. The secondary decarbonized gas is subjected to membrane concentration and separation to obtain non-permeable gas and membrane separated carbon dioxide concentrated gas. The first pressure swing adsorption tower is filled with a first pressure swing adsorbent, and the second pressure swing adsorption tower is filled with a second pressure swing adsorbent. The first pressure swing adsorbent and the second pressure swing adsorbent are modified carbonaceous hydrophobic adsorbents. The flue gas with a low CO2 concentration is subjected to a primary pressure swing adsorption, and the obtained primary concentrated gas is subjected to a secondary pressure swing adsorption. The decarbonized gas of the secondary pressure swing adsorption is further subjected to membrane concentration and separation, thereby further improving the CO2 capture rate.

[0034] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flue gas CO2 capture, purification and energy storage device, characterized by: The invention comprises a smoke inlet pipe (1), wherein the smoke inlet pipe (1) is connected to a dust removal device, wherein the dust removal device comprises a dust removal box (2), wherein a double-layer filter frame (3) is arranged in the dust removal box (2), wherein each of the filter frames (3) is provided with an asbestos filter screen (4), wherein a plurality of auxiliary filter frames (5) are fixedly arranged in a cross shape between the filter frames (3), wherein each of the auxiliary filter frames (5) is provided with an auxiliary asbestos filter screen (6), wherein a refrigeration box (7) is arranged on one side of the dust removal box (2), wherein an air inlet pipe (8) penetrating into the refrigeration box (7) is arranged on one side of the dust removal box (2), wherein a plurality of branch pipes are arranged on the air inlet pipe (8), wherein the other ends of the branch pipes are connected to a refrigeration pipe (9), wherein the top end of each of the refrigeration pipes (9) is connected to an auxiliary refrigeration pipe (10) via a vertical pipe, wherein the auxiliary refrigeration pipe (10) is connected to the ... 10) and the other end of the refrigeration pipe (9) are both provided with an outlet pipe (11) passing through the refrigeration box (7), the refrigeration box (7) is provided with a refrigeration assembly, the outlet pipe (11) is connected to a gas-water separator (12), the gas-water separator (12) is connected to a purification device (14) via a flue gas pipe (13), the purification device (14) is connected to a primary separation and concentration device (16) via a fan (15), the primary separation and concentration device (16) is connected to a secondary separation and concentration device (17), the secondary separation and concentration device (17) is connected to an intermediate storage tank (18), the intermediate storage tank (18) is provided with a compressor (19), the intermediate storage tank (18) is connected to a purification tower (20), and the purification tower (20) is provided with a circulation pump (21).

2. A flue gas CO2 capture, purification and energy storage device according to claim 1, characterized in that: A mounting plate (22) is fixedly provided at the top end of the filter frame (3); the mounting plate (22) is fixed to the outer top end of the dust removal box (2) with screws; and a U-shaped sealing ring (23) is fixedly provided at the bottom end of the mounting plate (22).

3. A flue gas CO2 capture, purification and energy storage device according to claim 2, characterized in that: Wind shields (24) are provided inside the auxiliary refrigeration pipe (10) and the refrigeration pipe (9), and ventilation holes (25) are evenly arranged on the wind shields (24).

4. A flue gas CO2 capture, purification and energy storage device according to claim 3, characterized in that: The refrigeration assembly comprises an auxiliary circulation pump (26) and a refrigerator (27) fixed on the outer wall of the refrigeration box (7); the input end of the refrigerator (27) is provided with a pipe 1 (28) penetrating into the bottom of the refrigeration box (7); the output end of the refrigerator (27) is connected to the auxiliary circulation pump (26) via a pipe 2; the output end of the auxiliary circulation pump (26) is provided with a pipe 3 (29) penetrating into the top of the refrigeration box (7).

5. A flue gas CO2 capture, purification and energy storage device according to claim 4, characterized in that: A bellows (30) is fixedly provided on the outer wall of the refrigeration box (7), an auxiliary fan is fixedly provided in the bellows (30) via a bracket, a cooling pipe (32) is provided on the bellows (30) and penetrates into the interior of the refrigeration box (7), a U-shaped auxiliary cooling pipe (33) is connected to the bottom end of the cooling pipe (32), the auxiliary cooling pipe (33) is located at the bottom of the refrigeration box (7), a final outlet pipe (34) is provided at the bottom end of the auxiliary cooling pipe (33), and the other end of the final outlet pipe (34) is connected to the purification tower (20).

6. A flue gas CO2 capture, purification and energy storage device according to claim 5, characterized in that: The purification tower (20) is connected to a liquid CO2 storage tank (35), and the compressor (19) is arranged between the secondary separation and concentration device (17) and the intermediate storage tank (18).

7. A flue gas CO2 capture, purification and energy storage device according to claim 6, characterized in that: A drain pipe with a control valve is provided at the bottom of the gas-water separator (12), and separation blades are provided in the gas-water separator (12). The purification device (14) comprises a first purification box and a second purification box, wherein a multi-layer activated carbon mesh plate (36) is installed in the first purification box, and the first purification box and the second purification box are connected to each other. A spray pump (37) is provided on the outer wall of the second purification box, and a spray pipe is provided on the spray pump (37). The other end of the spray pipe passes into the second purification box and is provided with a spray plate (38) with a spray hole.

8. A flue gas CO2 capture, purification and energy storage device according to claim 7, characterized in that: The top of the purification tower (20) is provided with an exhaust port (39), and the bottom of the purification tower (20) is provided with an outlet (40). A first packing layer (41) and a second packing layer (42) are arranged inside the purification tower (20). The outlet (40) is provided with a control valve and is connected to the liquid CO2 storage tank (35). The first packing layer (41) and the second packing layer (42) are both stainless steel metal rolled corrugated packing. The circulation pump (21) is installed on the outer wall of the purification tower (20), and a circulation pipe (43) is provided on the circulation pump (21).

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