Carbon capture gas compression device and system

Abstract

The invention relates to the technical field of carbon capture equipment, and particularly discloses a carbon capture gas compression device and system.The carbon capture gas compression device comprises a filter, the filter comprises a filtering dust removal box and a dust removal mechanism, an air inlet hole and an air outlet hole are formed in the filtering dust removal box, and the dust removal mechanism comprises a supporting frame, an electrostatic dust removal rod and a carbon dioxide permeable membrane; the dust removal mechanism further comprises a suction pipe and a dust removal air pipe, the suction pipe is connected with the inner wall of the filtering dust removal box, a suction hole communicated with the suction pipe is formed in the side wall of the filtering dust removal box, and the dust removal air pipe is communicated with the suction hole. The electrostatic dust collection rod is located in the suction pipe, dust collection holes are formed in the pipe wall of the suction pipe, and when airflow circulates in the dust collection air pipe, the dust collection holes face the carbon dioxide permeable membrane. Through the arrangement of the dust removal mechanism, the carbon dioxide permeable membrane can be subjected to dust removal cleaning on the premise that the filtering dust removal box is not disassembled.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon capture equipment, and particularly relates to a carbon capture gas compression device and system. Background Art

[0002] Carbon capture is a technology that separates and sequesters or utilizes carbon dioxide from industrial emission sources or the atmosphere. Carbon dioxide is captured through technical means and then sequestered or reused to reduce greenhouse gas emissions.

[0003] In industrial production, a carbon capture device performs pre-treatments such as denitrification, dust removal, and desulfurization on the flue gas discharged from a power plant boiler to remove substances harmful to subsequent processes in the flue gas. Then, in an absorption tower, a composite solution reacts with carbon dioxide in the flue gas to separate carbon dioxide from the flue gas. Subsequently, under certain conditions, its product is decomposed in a regeneration tower to release carbon dioxide. The carbon dioxide then undergoes compression, purification treatment, and liquefaction to obtain a high-purity liquid carbon dioxide product.

[0004] Chinese patent document with publication number CN114405237B discloses a combined absorption carbon dioxide capture and compression treatment system, including a filtration component. The right end of the filtration component is fixedly connected to an electrostatic precipitator. The bottom of the electrostatic precipitator is fixedly connected to a carbon dioxide molecular sieve. The right end of the carbon dioxide molecular sieve is fixedly connected to a compressor. An air inlet is provided on the left outer wall of the electrostatic precipitator, and four groups of air inlets are symmetrically arranged up and down. Three support frames are fixedly installed on the inner wall of the electrostatic precipitator, and the air inlets and the support frames are alternately distributed. A top cover one is fixedly installed on the top of the electrostatic precipitator. Electrostatic dust removal rods are fixedly installed on both the support frames and the bottom inner wall of the electrostatic precipitator, and the electrostatic dust removal rods are evenly distributed. A carbon dioxide permeable membrane is fixedly installed on the top of the electrostatic dust removal rods, and the periphery of the carbon dioxide permeable membrane is fixedly connected to the inner wall of the electrostatic precipitator.

[0005] When gas enters the electrostatic precipitator, it passes through the carbon dioxide permeable membrane and the electrostatic dust removal rods in sequence. Although the electrostatic dust removal rods can neutralize the charges of particles, there is a certain probability that the dust in the airflow cannot pass through the carbon dioxide permeable membrane and is thus intercepted on the windward side of the carbon dioxide permeable membrane. As time goes by, the dust accumulated on the carbon dioxide permeable membrane gradually increases. Without disassembling the equipment, this part of the dust cannot be cleaned in a timely and effective manner, thereby affecting the ventilation performance of the carbon dioxide permeable membrane in subsequent use. Summary of the Invention

[0006] The present invention provides a carbon capture gas compression device and system, aiming to solve the problem that the dust on the carbon dioxide permeable membrane in the related technology cannot be cleaned in a timely manner.

[0007] A carbon capture gas compression device and system of the present invention comprises a filter and a compressor, wherein the filter comprises a filter dust removal box and a dust removal mechanism, a main air drive pump is arranged between the filter dust removal box and the compressor, an air inlet hole and an air outlet hole are arranged on the filter dust removal box, the main air drive pump is located at the air outlet hole, the dust removal mechanism comprises a support frame, an electrostatic dust removal rod and a carbon dioxide permeable membrane, the support frame is connected to the inner wall of the filter dust removal box, the carbon dioxide permeable membrane is in contact with the side of the support frame facing the air inlet hole; the support frame includes The invention comprises a plurality of supporting cross bars arranged in parallel, the electrostatic dust removal rod is located on the side of the carbon dioxide permeable membrane away from the supporting cross bars, the dust removal mechanism also comprises a suction pipe and a dust removal air duct, the end of the suction pipe is connected to the inner wall of the filter dust removal box, a suction hole connected to the suction pipe is provided on the side wall of the filter dust removal box, the dust removal air duct is connected to the suction hole, the electrostatic dust removal rod is located in the suction pipe, a dust removal hole is provided on the pipe wall of the suction pipe, and when air flows in the dust removal air duct, the dust removal hole faces the carbon dioxide permeable membrane.

[0008] The effect is that during the operation of the device, the airflow passes through the carbon dioxide permeable membrane, and some dust particles that cannot pass through will accumulate on the side of the carbon dioxide permeable membrane facing the electrostatic dust removal rod. After a period of operation, the main air drive pump stops running and the electrostatic dust removal rod is turned on. Under the action of the electric charge, most of the dust on the carbon dioxide permeable membrane will be adsorbed on the surface of the electrostatic dust removal rod. Negative pressure airflow can be input into the suction pipe through the dust removal air duct to extract the dust on the surface of the electrostatic dust removal rod from the suction hole to the filter dust removal box. At the same time, the dust removal hole can transfer the negative pressure airflow in the suction pipe to the surface of the carbon dioxide permeable membrane, so as to suck some dust that has not been removed by the electrostatic effect, thereby improving the dust removal effect to a certain extent.

[0009] Preferably, the suction pipe and the electrostatic dust removal rod are coaxial, and the suction pipe includes a fixed cylinder shell and a movable cylinder shell, the fixed cylinder shell is fixedly connected to the inner wall of the filter dust removal box, and the fixed cylinder shell is provided with an adjustment slit on the side facing the carbon dioxide permeation membrane, the movable cylinder shell is coaxially sleeved outside the fixed cylinder shell and coaxially rotatable relative to the fixed cylinder shell, the dust removal hole is opened on the movable cylinder shell, and the dust removal mechanism includes a control component for controlling the rotation of the movable cylinder shell.

[0010] Preferably, the control assembly includes a control rack and a control gear, the control gear and the movable cylinder shell are coaxially fixedly connected, the control rack and the control gear are meshed, and the filter dust removal box is connected to a driving source for driving the control rack to move.

[0011] The effect is that when the adjustment slit is opened, the space between the dust from the carbon dioxide permeable membrane to the electrostatic dust removal rod is relatively spacious, so the electrostatic dust removal rod can directly adsorb a larger amount of dust; the control rack moves to control the rotation of the control gear, and the movable cylinder shell rotates synchronously. When the movable cylinder shell rotates to the adjustment slit, the adjustment slit is closed, and the suction pipe is in a relatively complete tubular shape. At this time, the dust removal hole transfers the negative pressure airflow in the suction pipe to the surface of the carbon dioxide permeable membrane more concentratedly, thereby improving the absorption effect of dust that is not removed by electrostatic action.

[0012] Preferably, there are multiple electrostatic precipitator rods and suction pipes, the arrangement direction of the multiple electrostatic precipitator rods is consistent with the arrangement direction of the multiple supporting cross bars and the arrangement direction is perpendicular to the gas flow direction in the filter dust box, the length direction of the electrostatic precipitator rod is parallel to the length direction of the supporting cross bar, and in the projection along the gas flow direction in the filter dust box, a single supporting cross bar is located between two adjacent electrostatic precipitator rods.

[0013] The effect is that when the air flow circulates in the filtering dust removal box, the air flow generates thrust on the carbon dioxide permeable membrane, each supporting cross bar has a structural support function for the carbon dioxide permeable membrane, and the part where the air flow passes through the carbon dioxide permeable membrane is located between two adjacent supporting cross bars, and the position of the electrostatic dust removal rod is also facing this part, thereby improving the efficiency and effect of electrostatic adsorption of dust during dust removal.

[0014] Preferably, a plurality of positioning ribs are fixedly connected to the side of the carbon dioxide permeable membrane facing the supporting cross bar, and a positioning gap is provided on the side of the supporting cross bar facing the electrostatic precipitator rod, and the length direction of the positioning gap is parallel to the length direction of the supporting cross bar. The positioning gap is for the positioning rib to be embedded, and the width of the carbon dioxide permeable membrane between two adjacent positioning ribs is greater than the spacing between the positioning gaps on two adjacent supporting cross bars.

[0015] The effect is that when two continuous positioning ribs are simultaneously embedded in their respective corresponding positioning gaps, the carbon dioxide permeation membrane between the two positioning ribs has a downwardly sunken shape, which can increase the effective contact area between the gas and the membrane surface, thereby increasing the gas permeation rate.

[0016] Preferably, a contraction groove is provided on the supporting cross bar and in the positioning gap, a propulsion body is slidably arranged in the filtering dust removal box, the propulsion body is located on the side of the carbon dioxide permeable membrane away from the supporting cross bar, the propulsion body includes a contact cross bar, the propulsion body moves close to the supporting cross bar, the length direction of the contact cross bar is parallel to the length direction of the positioning gap, the contact cross bar applies thrust to the carbon dioxide permeable membrane, so that the carbon dioxide permeable membrane is pushed into the positioning gap and the contraction groove.

[0017] The effect is as follows: The contact crossbar moves closer to the carbon dioxide permeable membrane and pushes it into the contraction groove. During this process, the part of the carbon dioxide permeable membrane facing the electrostatic dust removal rod is gradually flattened and gets closer to the suction pipe. The dust remaining on it can also be subjected to a stronger negative pressure adsorption effect, thereby improving the dust removal effect.

[0018] Preferably, the pusher body further includes a transmission rack block, the transmission rack block is fixedly connected to the contact crossbar, and the control gear transmits thrust to the transmission rack block.

[0019] Preferably, the control rack meshes with the outermost control rack in a row of control racks. A single transmission rack block is located between two adjacent control gears. A reversing gear is selectively arranged between the transmission rack block and the control gear. The reversing gear is rotatably connected to the filter dust removal box. The reversing gear meshes with the control gear. The transmission rack block selectively meshes with the control gear or the reversing gear. Adjacent control gears rotate in opposite directions, and all transmission rack blocks move in the same direction.

[0020] The effect is as follows: Each control gear realizes torque transmission through the transmission rack block, thereby realizing synchronous control of each suction pipe. And due to the existence of the reversing gear, even if the rotation directions of the control gears are different, the moving directions of all pusher bodies can be the same.

[0021] A carbon capture gas compression system of the present invention includes the above-mentioned carbon capture gas compression device. An electric heating molecular sieve and a washing box are connected between the main air driving pump and the compressor. The electric heating molecular sieve is located between the washing box and the main air driving pump. The washing box is filled with saturated sodium bicarbonate solution. A connecting pipe is fixedly connected inside the washing box. The connecting pipe is communicated with the air outlet port of the main air driving pump. A plurality of dispersion air holes are opened at one end of the connecting pipe far away from the main air driving pump.

[0022] Preferably, the connecting pipe includes a hard straight pipe part and a flexible pipe part. The hard straight pipe part is fixedly connected to the inner wall of the washing box. One end of the flexible pipe part is fixedly connected to the end of the hard straight pipe part. A wind dispersing sphere is coaxially fixedly connected to the end of the flexible pipe part far away from the hard straight pipe part. The dispersion air holes are opened on the surface of the wind dispersing sphere.

[0023] The effect is as follows: When high-concentration carbon dioxide gas enters the washing box, the flexible pipe part makes the spatial position of the wind dispersing sphere uncertain, and the plurality of dispersion air holes make the outflow position and flow direction of the gas have dispersion, thereby increasing the effective contact rate between carbon dioxide molecules and sodium bicarbonate solution, and further improving the gas washing effect.

[0024] Adopting the above technical solution, the beneficial effects of the present invention are: Through the provision of the electrostatic dust removal rod and the suction pipe, the dust remaining on the surface of the carbon dioxide permeable membrane is respectively subjected to electrostatic adsorption and negative pressure suction treatment, and the support frame and the propulsion body change the shape of the carbon dioxide permeable membrane under different working conditions, improving the dust removal and cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic diagram showing the overall structure of the carbon capture gas compression system in the embodiment of the present invention.

[0026] Figure 2 FIG. is a schematic cross-sectional view showing the internal structure of the filter dust removal box in the embodiment of the present invention.

[0027] Figure 3 FIG. is a schematic cross-sectional view showing the structure of one row of electrostatic dust removal rods, suction pipes and support cross bars when the gas flows through the filter dust removal box in the embodiment of the present invention.

[0028] Figure 4 FIG. is a schematic side cross-sectional view showing the internal structure of the sub-box closest to the air inlet pipe in the embodiment of the present invention.

[0029] Figure 5 FIG. is a schematic diagram showing the structure of the suction pipe and the propulsion body when the adjustment slit is open in the embodiment of the present invention.

[0030] Figure 6 FIG. is a schematic cross-sectional view showing the structure when the propulsion body pushes the lower carbon dioxide permeable membrane into the contraction groove in the embodiment of the present invention.

[0031] Figure 7 FIG. is a schematic cross-sectional view showing the connection structure of the control rack and the main drive rod in the embodiment of the present invention.

[0032] Reference Signs: 1. Air inlet pipe; 2. Filter; 21. Filter and dust removal box; 211. Air inlet hole; 212. Air outlet hole; 213. Sub-box body; 214. Waist-shaped hole; 215. Suction hole; 22. Driving source; 221. Total driving rod; 3. Dust removal mechanism; 31. Support frame; 311. Support cross bar; 312. Positioning gap; 313. Shrinkage groove; 32. Electrostatic dust removal rod; 33. Carbon dioxide permeable membrane; 331. Positioning rib; 34. Suction pipe; 341. Fixed cylinder shell; 3411. Adjusting long slot; 342. Movable cylinder shell; 343. Dust removal hole; 35. Control component; 351. Control rack; 3511. Installation screw; 352. Control gear; 353. Reversing gear; 36. Propulsion body; 361. Contact cross bar; 362. Transmission rack block; 37. Dust removal air duct; 4. Main air driving pump; 42. Electric heating molecular sieve; 43. Stop valve; 44. Exhaust valve; 5. Gas washing box; 51. Connecting pipe; 511. Hard straight pipe part; 512. Flexible pipe part; 52. Air dispersion sphere; 521. Dispersion air hole; 6. Compressor. Specific embodiments

[0033] The following is combined with Figures 1 to 7 to describe a carbon capture gas compression device and system of the present invention.

[0034] This embodiment discloses a carbon capture gas compression device, as Figure 1 shown, including an air inlet pipe 1, a filter 2, a main air driving pump 4 and a compressor 6. One end of the air inlet pipe 1 is externally connected to the exhaust device of industrial equipment. The filter and dust removal box 21 is communicated with the compressor 6. The main air driving pump 4 is located between the filter 2 and the compressor 6. When the main air driving pump 4 works, it can generate an air flow moving from the air inlet pipe 1 towards the compressor 6. When the gas enters the air inlet pipe 1, it has already undergone a preliminary filtration and purification. The filter and dust removal box 21 is used for further filtering and purifying the gas and mainly allows carbon dioxide molecules to pass through; the compressor 6 is used for compressing the high-concentration carbon dioxide gas.

[0035] As Figure 1 and Figure 2As shown in the figure, the filter 2 includes a filter dust removal box 21 and a dust removal mechanism 3. An air inlet hole 211 and an air outlet hole 212 are formed in the filter dust removal box 21. The air inlet pipe 1 is communicated with the air inlet hole 211 of the filter dust removal box 21, and the main air driving pump 4 is installed at the air outlet hole 212 of the filter dust removal box 21. In this embodiment, the air inlet hole 211 is above the filter dust removal box 21, and the air outlet hole 212 is below the filter dust removal box 21. The dust removal mechanism 3 includes a support frame 31, an electrostatic dust removal rod 32 and a carbon dioxide permeable membrane 33. The support frame 31 and the carbon dioxide permeable membrane 33 are both fixedly connected to the inner wall of the filter dust removal box 21. The carbon dioxide permeable membrane 33 contacts the side of the support frame 31 facing the air inlet hole 211, and the support frame 31 plays a role in stabilizing the shape of the carbon dioxide permeable membrane 33. The support frame 31 includes a plurality of support cross bars 311 arranged side by side. The ends of the support cross bars 311 are fixedly connected to the inner wall of the filter dust removal box 21. The length direction of the support cross bars 311 is the horizontal direction, and the arrangement direction of the plurality of support cross bars 311 is also the horizontal direction and perpendicular to its length direction.

[0036] As Figure 2 and Figure 3 shown in the figure, a plurality of positioning ribs 331 are fixedly connected to the side of the carbon dioxide permeable membrane 33 facing the support cross bars 311. The number of the positioning ribs 331 is the same as that of the support cross bars 311 and they correspond to each other one by one. The material of the positioning ribs 331 is polypropylene; a positioning gap 312 is formed on the side of the support cross bar 311 facing the electrostatic dust removal rod 32. The length direction of the positioning gap 312 is parallel to the length direction of the support cross bar 311. The positioning gap 312 on a single support cross bar 311 is for a positioning rib 331 to be embedded in parallel. The width of the carbon dioxide permeable membrane 33 between two adjacent positioning ribs 331 is greater than the distance between the positioning gaps 312 on two adjacent support cross bars 311. That is, when two consecutive positioning ribs 331 are simultaneously embedded in their respective corresponding positioning gaps 312, the carbon dioxide permeable membrane 33 between these two positioning ribs 331 has a shape of sagging and depression. The part of the carbon dioxide permeable membrane 33 between two support cross bars 311 is the part for gas to pass through. This part of the carbon dioxide permeable membrane 33 is concave to increase the effective contact area between the gas and the membrane surface, thereby increasing the permeation rate; at the same time, the dust intercepted by the carbon dioxide permeable membrane 33 will accumulate in this part.

[0037] As Figure 1 、 Figure 3 、 Figure 4 and Figure 5As shown, the electrostatic dust removal rod 32 is located on the side of the carbon dioxide permeable membrane 33 away from the support cross bar 311, and is fixedly connected to the inner wall of the filtration and dust removal box 21. There are also multiple electrostatic dust removal rods 32. The arrangement direction of the multiple electrostatic dust removal rods 32 is the same as that of the support cross bar 311, and the length direction of the electrostatic dust removal rod 32 is parallel to the length direction of the support cross bar 311. In the projection along the gas flow direction in the filtration and dust removal box 21, a single support cross bar 311 is located between two adjacent electrostatic dust removal rods 32, that is, each electrostatic dust removal rod 32 is located directly above the dust accumulation area on the carbon dioxide permeable membrane 33. The dust removal mechanism 3 further includes a suction pipe 34 and a dust removal air duct 37. The end of the suction pipe 34 is connected to the inner wall of the filtration and dust removal box 21. A suction hole 215 communicating with the suction pipe 34 is opened on one side wall of the filtration and dust removal box 21. A single electrostatic dust removal rod 32 is located in a suction pipe 34 and the two are coaxial; the dust removal air duct 37 is located outside the filtration and dust removal box 21 and communicates with the suction hole 215. One end of the dust removal air duct 37 away from the filtration and dust removal box 21 is connected to a negative pressure fan (not shown in the figure). Thus, when the negative pressure fan is started, a negative pressure air flow will be generated in the suction pipe 34.

[0038] As Figure 3 、 Figure 5 and Figure 6 shown, the suction pipe 34 includes a fixed cylinder shell 341 and a movable cylinder shell 342. The fixed cylinder shell 341 is fixedly connected to the inner wall of the filtration and dust removal box 21. An adjustment long slot 3411 is opened on the side of the fixed cylinder shell 341 facing the carbon dioxide permeable membrane 33. The movable cylinder shell 342 is coaxially sleeved outside the fixed cylinder shell 341 and is rotatably arranged coaxially relative to the fixed cylinder shell 341. A dust removal hole 343 is opened on the movable cylinder shell 342. In the axial projection along the electrostatic dust removal rod 32, the angular span of the fixed cylinder shell 341 is 220°, the angular span of the adjustment long slot 3411 is 140°, and the angular span of the movable cylinder shell 342 is 155°. That is, when the movable cylinder shell 342 is driven to the lower part of the electrostatic dust removal rod 32, the adjustment long slot 3411 can be closed, and at this time the dust removal hole 343 is located below the electrostatic dust removal rod 32, and the opening direction is directly facing the carbon dioxide permeable membrane 33.

[0039] As Figure 2 、 Figure 3 and Figure 7As shown in the figure, the dust removal mechanism 3 includes a control component 35 for controlling the rotation of the movable cylinder shell 342. The control component 35 includes a control rack 351 and a control gear 352. The control gear 352 is coaxially and fixedly connected to the movable cylinder shell 342. The control rack 351 is slidably connected to the filter dust removal box 21, and the sliding direction is the vertical direction. The control rack 351 meshes with the control gear 352. A driving source 22 for driving the control rack 351 to move is connected to the filter dust removal box 21. In order to improve the force balance, both ends of a single movable cylinder shell 342 are connected to a control gear 352 respectively. The electrostatic dust removal rods 32, the suction pipes 34, and the support cross bars 311 are all arranged in three rows along the air flow direction in the filter dust removal box 21. The number of electrostatic dust removal rods 32 and suction pipes 34 in each row is five, and the number of support cross bars 311 is four. There are three control racks 351. A single control rack 351 corresponds to a row of control gears 352 and meshes with the outermost control rack 351 in a row of control racks 351. Propulsion bodies 36 are slidably arranged on the inner wall of the filter dust removal box 21 and between every two adjacent control racks 351. The propulsion body 36 includes a transmission rack block 362. Rack structures are formed on both sides of the transmission rack block 362. The adjacent two control gears 352 transmit torque through the transmission rack block 362 therebetween, so as to realize the synchronous rotation of the control gears 352 and the movable cylinder shell 342 in the same row.

[0040] As Figure 2 and Figure 7 shown in the figure, in order to facilitate the replacement of each carbon dioxide permeation membrane 33, the filter dust removal box 21 is formed by split assembly and is fixed by connecting a plurality of sub-box bodies 213 with bolts. A wing edge structure for the bolt to pass through is fixedly connected to the edge of each sub-box body 213. The driving source 22 adopts a driving cylinder. The driving cylinder is installed on the topmost sub-box body 213, and the telescopic direction of its piston rod is the vertical direction. A total driving rod 221 is fixedly connected to the end of the piston rod, that is, the total driving rod 221 is slidably connected to the filter dust removal box 21 in the vertical direction. Three waist-shaped holes 214 are opened on the side wall of the filter dust removal box 21, and the length direction of the waist-shaped holes 214 is parallel to the moving direction of the total driving rod 221. An installation screw 3511 is fixedly connected to the control rack 351. The installation screw 3511 passes through the waist-shaped hole 214, passes through the total driving rod 221 and is threadedly connected with a nut, so as to be relatively fixed to the total driving rod 221 by itself. The driving source 22 controls the synchronous movement of the three control racks 351 through the total driving rod 221.

[0041] As Figure 3 , Figure 5 and Figure 6As shown, a contraction groove 313 is formed in the support cross bar 311 and located within the positioning gap 312. The propulsion body 36 further includes a contact cross bar 361. The contact cross bar 361 is fixedly connected to the transmission rack block 362, that is, the two move synchronously. The contact cross bar 361 is located directly above the positioning gap 312, and the length direction of the contact cross bar 361 is parallel to the length direction of the positioning gap 312. The contact cross bar 361 is located at the center position between two adjacent control gears 352. A reversing gear 353 is selectively provided between the transmission rack block 362 and the control gear 352. The reversing gear 353 is rotatably connected to the dust filtration and removal box 21. The reversing gear 353 meshes with the control gear 352, and the transmission rack block 362 selectively meshes with the control gear 352 or the reversing gear 353; during the process of all the movable cylinder shells 342 rotating to close the adjustment long slot 3411, the two adjacent movable cylinder shells 342 rotate in opposite directions. However, due to the presence of the reversing gear 353, the widths of the adjacent transmission rack blocks 362 are different, and the moving directions of all the propulsion bodies 36 are downward. When the contact cross bar 361 contacts the carbon dioxide permeable membrane 33, the contact cross bar 361 applies a thrust to the carbon dioxide permeable membrane 33, causing the carbon dioxide permeable membrane 33 to be pushed into the positioning gap 312 and the contraction groove 313. During this process, the part of the carbon dioxide permeable membrane 33 located below the electrostatic dust removal rod 32 is gradually flattened and gets closer and closer to the suction pipe 34, and the dust remaining on it can also be subjected to a stronger negative pressure adsorption effect, improving the dust removal effect.

[0042] As Figure 1As shown in the figure, this embodiment also discloses a carbon capture gas compression system. Based on the above carbon capture gas compression device, an electric heating molecular sieve 42 and a washing tank 5 are sequentially connected between the main driving air pump 4 and the compressor 6. A stop valve 43 is also provided on the pipeline between the electric heating molecular sieve 42 and the washing tank 5, and an exhaust valve 44 is also provided between the electric heating molecular sieve 42 and the stop valve 43. The stop valve 43 is used to control the on-off of the pipeline between the electric heating molecular sieve 42 and the washing tank 5. When the exhaust valve 44 is opened, the gas passing through the electric heating molecular sieve 42 can be discharged to the external environment. The washing tank 5 is filled with saturated sodium bicarbonate solution. A connecting pipe 51 is fixedly connected inside the washing tank 5. The connecting pipe 51 includes a hard straight pipe portion 511 and a flexible pipe portion 512. One end of the hard straight pipe portion 511 is fixedly connected to the inner wall of the washing tank 5, and one end of the flexible pipe portion 512 is coaxially fixedly connected to the other end of the hard straight pipe portion 511. The end of the flexible pipe portion 512 away from the hard straight pipe portion 511 is coaxially fixedly connected with a wind-dispersing sphere 52. A plurality of dispersing air holes 521 are evenly formed on the surface of the wind-dispersing sphere 52. In the natural state, the wind-dispersing sphere 52 is immersed below the liquid level of the saturated sodium bicarbonate solution. The hard straight pipe portion 511 is communicated with the end of the stop valve 43 away from the main driving air pump 4. The gas in the filter and dust removal box 21 enters the connecting pipe 51 of the washing tank 5 after passing through the stop valve 43, and finally flows out through each dispersing air hole 521 and contacts the sodium bicarbonate solution.

[0043] The working process of this embodiment: The main driving air pump 4 starts to work. The stop valve 43 is closed and the exhaust valve 44 is opened. The gas flows through the filter and dust removal box 21 and finally flows out from the exhaust valve 44. In the filter and dust removal box 21, the content of carbon dioxide in the gas passing through the carbon dioxide permeable membrane 33 is relatively high. When this part of the gas continues to flow through the electric heating molecular sieve 42, a large number of carbon dioxide molecules are intercepted and adsorbed on the electric heating molecular sieve 42, and the remaining gas molecules flow out from the exhaust valve 44. When carbon dioxide needs to be captured, the exhaust valve 44 is closed and the stop valve 43 is opened. At the same time, the electric heating molecular sieve 42 is turned on for heating, and the carbon dioxide molecules on the electric heating molecular sieve 42 are released. The high-concentration carbon dioxide gas enters the washing tank 5 and contacts the sodium bicarbonate solution. The gas is further purified and then enters the compressor 6 for compression.

[0044] When the gas flows through the filtering and dust-removing box 21, the adjusting long slot 3411 is in an open state, the electrostatic dust-removing rod 32 is electrified, and each positioning rib 331 is located at the opening of the positioning slot 312. After long-term use, the carbon dioxide permeable membrane 33 inside the filtering and dust-removing box 21 is cleaned. The driving source 22 is started to push each control rack 351 to move, all the movable cylinder shells 342 rotate simultaneously, all the adjusting long slots 3411 are closed, and at the same time each pusher 36 moves downward. The contact cross bar 361 pushes the carbon dioxide permeable membrane 33 below it into the contraction groove 313. Then the external negative pressure fan is started, and the electrostatic dust-removing rod 32 stops being electrified. The negative pressure air flow can absorb the dust in the static suction pipe 34 and on the carbon dioxide permeable membrane 33.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above textual description of the embodiments and the content of the drawings are all exemplary, intended to explain the inventive concept of the present invention, and should not be construed as a limitation to the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention; all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

Claims

1. A carbon capture gas compression device, comprising a filter (2) and a compressor (6), the filter (2) comprising a filter dust removal box (21) and a dust removal mechanism (3), a main air drive pump (4) being arranged between the filter dust removal box (21) and the compressor (6), the filter dust removal box (21) being provided with an air inlet hole (211) and an air outlet hole (212), the main air drive pump (4) being located at the air outlet hole (212), the dust removal mechanism (3) comprising a support frame (31), an electrostatic dust removal rod (32) and a carbon dioxide permeable membrane (33), the support frame (31) being connected to an inner wall of the filter dust removal box (21), and the carbon dioxide permeable membrane (33) being in contact with a side of the support frame (31) facing the air inlet hole (211); Characterized in that, The support frame (31) comprises a plurality of support cross bars (311) arranged in parallel, the electrostatic dust removal rod (32) is located on a side of the carbon dioxide permeable membrane (33) away from the support cross bar (311), the dust removal mechanism (3) further comprises a suction pipe (34) and a dust removal air duct (37), the end of the suction pipe (34) is connected to the inner wall of the filter dust removal box (21), a suction hole (215) connected to the suction pipe (34) is provided on the side wall of the filter dust removal box (21), the dust removal air duct (37) is connected to the suction hole (215), the electrostatic dust removal rod (32) is located in the suction pipe (34), a dust removal hole (343) is provided on the pipe wall of the suction pipe (34), and when air flows in the dust removal air duct (37), the dust removal hole (343) faces the carbon dioxide permeable membrane (33).

2. The carbon capture gas compression device according to claim 1, characterized in that, The suction pipe (34) and the electrostatic dust removal rod (32) are coaxial. The suction pipe (34) comprises a fixed cylindrical shell (341) and a movable cylindrical shell (342). The fixed cylindrical shell (341) is fixedly connected to the inner wall of the filter dust removal box (21). A long adjustment slit (3411) is provided on a side of the fixed cylindrical shell (341) facing the carbon dioxide permeable membrane (33). The movable cylindrical shell (342) is coaxially sleeved outside the fixed cylindrical shell (341) and is coaxially rotatable relative to the fixed cylindrical shell (341). The dust removal hole (343) is provided on the movable cylindrical shell (342). The dust removal mechanism (3) comprises a control component (35) for controlling the rotation of the movable cylindrical shell (342).

3. A carbon capture gas compression device according to claim 2, wherein, The control assembly (35) comprises a control rack (351) and a control gear (352); the control gear (352) and the movable cylinder shell (342) are coaxially fixedly connected; the control rack (351) and the control gear (352) are meshed; and the filter dust removal box (21) is connected to a driving source (22) for driving the control rack (351) to move.

4. A carbon capture gas compression device according to claim 3, characterized in that, A plurality of the electrostatic precipitator rods (32) and the suction pipes (34) are provided, the arrangement direction of the plurality of electrostatic precipitator rods (32) is consistent with the arrangement direction of the plurality of support cross bars (311), and the arrangement direction is perpendicular to the gas flow direction in the filter dust removal box (21), the length direction of the electrostatic precipitator rods (32) is parallel to the length direction of the support cross bars (311), and in a projection along the gas flow direction in the filter dust removal box (21), a single support cross bar (311) is located between two adjacent electrostatic precipitator rods (32).

5. A carbon capture gas compression device according to claim 4, characterized in that, A plurality of positioning ribs (331) are fixedly connected to one side of the carbon dioxide permeable membrane (33) facing the supporting crossbar (311); a positioning slit (312) is provided on one side of the supporting crossbar (311) facing the electrostatic precipitator rod (32); the length direction of the positioning slit (312) is parallel to the length direction of the supporting crossbar (311); the positioning ribs (331) are embedded in the positioning slit (312); and the width of the carbon dioxide permeable membrane (33) between two adjacent positioning ribs (331) is greater than the spacing between the positioning slits (312) on two adjacent supporting crossbars (311).

6. The carbon capture gas compression device according to claim 5, wherein, A contraction groove (313) is provided on the support cross bar (311) and in the positioning gap (312); a propulsion body (36) is slidably provided in the filter dust removal box (21); the propulsion body (36) is located on a side of the carbon dioxide permeable membrane (33) away from the support cross bar (311); the propulsion body (36) comprises a contact cross bar (361); the propulsion body (36) moves close to the support cross bar (311); the length direction of the contact cross bar (361) is parallel to the length direction of the positioning gap (312); the contact cross bar (361) applies a thrust to the carbon dioxide permeable membrane (33), so that the carbon dioxide permeable membrane (33) is pushed into the positioning gap (312) and the contraction groove (313).

7. A carbon capture gas compression device according to claim 6, characterized in that, The propulsion body (36) further comprises a transmission rack block (362), the transmission rack block (362) and the contact crossbar (361) are fixedly connected, and the control gear (352) transmits thrust to the transmission rack block (362).

8. A carbon capture gas compression device according to claim 7, characterized in that, The control rack (351) meshes with the control rack (351) at the edge of a row of control racks (351); a single transmission rack block (362) is located between two adjacent control gears (352); a reversing gear (353) is selectively provided between the transmission rack block (362) and the control gear (352); the reversing gear (353) is rotationally connected to the filter dust removal box (21); the reversing gear (353) meshes with the control gear (352); the transmission rack block (362) selectively meshes with the control gear (352) or with the reversing gear (353); adjacent control gears (352) rotate in opposite directions; and all transmission rack blocks (362) move in the same direction.

9. A carbon capture gas compression system, characterized in that, A carbon capture gas compression device according to any one of claims 1-8, wherein an electrothermal molecular sieve (42) and a scrubbing box (5) are connected between the main air driving pump (4) and the compressor (6), the electrothermal molecular sieve (42) is located between the scrubbing box (5) and the main air driving pump (4), the scrubbing box (5) is filled with saturated sodium bicarbonate solution, a connecting pipe (51) is fixedly connected inside the scrubbing box (5), the connecting pipe (51) is communicated with the air outlet port of the main air driving pump (4), and a plurality of dispersion air holes (521) are formed at one end of the connecting pipe (51) far away from the main air driving pump (4).

10. A carbon capture gas compression system according to claim 9, wherein, The connecting pipe (51) comprises a hard straight pipe portion (511) and a flexible pipe portion (512), the hard straight pipe portion (511) is fixedly connected with the inner wall of the scrubbing box (5), one end of the flexible pipe portion (512) is fixedly connected with the end of the hard straight pipe portion (511), a wind dispersing sphere (52) is coaxially and fixedly connected at the end of the flexible pipe portion (512) far away from the hard straight pipe portion (511), and the dispersion air holes (521) are formed on the surface of the wind dispersing sphere (52).

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