Carbon capture gas compression apparatus and system

Abstract

The present application relates to the technical field of carbon capture equipment, and specifically discloses a carbon capture gas compression device and system, which comprises a filter, the filter comprises a filter dust removal box and a dust removal mechanism, the filter dust removal box is provided with an air inlet hole and an air outlet hole, the dust removal mechanism comprises a support frame, an electrostatic dust removal stick and a carbon dioxide permeation membrane, the support frame is connected with the inner wall of the filter dust removal box, the electrostatic dust removal stick is located on the side of the carbon dioxide permeation membrane facing the air inlet hole, 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 filter dust removal box, the sidewall of the filter dust removal box is provided with a suction hole in communication with the suction pipe, the dust removal air pipe is in communication with the suction hole, the electrostatic dust removal stick is located in the suction pipe, the pipe wall of the suction pipe is provided with a dust removal hole, and the dust removal hole faces the carbon dioxide permeation membrane when the airflow flows in the dust removal air pipe. Through the arrangement of the dust removal mechanism, the carbon dioxide permeation membrane can be cleaned without disassembling the filter dust removal box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carbon capture equipment, and in particular to a carbon capture gas compression device and system. BACKGROUND

[0002] Carbon capture is a technology that separates carbon dioxide from industrial emission sources or the atmosphere and stores or utilizes it, which captures carbon dioxide through technical means and stores or reuses it to reduce greenhouse gas emissions.

[0003] In industrial production, the carbon capture device carries out denitrification, dust removal, desulfurization and other pretreatments on the flue gas of the power plant boiler, removes harmful substances in the flue gas for subsequent processes, and then reacts the complex solution in the absorption tower with carbon dioxide in the flue gas to separate carbon dioxide from the flue gas; then the product is decomposed in the regeneration tower under certain conditions to release carbon dioxide, which is compressed, purified, and liquefied to obtain high-purity liquid carbon dioxide product.

[0004] The Chinese patent document with publication number CN114405237B discloses a combined absorption carbon dioxide capture and compression processing system, which comprises a filter assembly, the filter assembly is fixedly connected with an electrostatic precipitator at the right end, the electrostatic precipitator is fixedly connected with a carbon dioxide molecular sieve at the bottom, the carbon dioxide molecular sieve is fixedly connected with a compressor at the right end, an air inlet is formed in the outer wall of the left side of the electrostatic precipitator, four groups of air inlets are symmetrically arranged above and below the air inlet, a support frame is fixedly installed on the inner wall of the electrostatic precipitator, the support frame is provided with three groups, the air inlets and the support frames are arranged alternately, a top cover one is fixedly installed on the top of the electrostatic precipitator. The support frame and the inner wall of the bottom of the electrostatic precipitator are both fixedly installed with electrostatic dust collection rods, the electrostatic dust collection rods are uniformly distributed, the electrostatic dust collection rods are fixedly installed with carbon dioxide permeation membranes at the top, and the carbon dioxide permeation membranes are fixedly connected with the inner wall of the electrostatic precipitator.

[0005] When the gas enters the electrostatic precipitator, it successively passes through the carbon dioxide permeation membrane and the electrostatic dust collection rod. Although the electrostatic dust collection rod can neutralize the charge of particles, the dust in the airflow will have a certain probability of not being able to pass through the carbon dioxide permeation membrane, thereby being intercepted on the windward side of the carbon dioxide permeation membrane. With long-term use, the dust accumulated on the carbon dioxide permeation membrane gradually increases. Under the premise of not disassembling the equipment, this part of dust cannot be cleaned in time and effectively, thereby affecting the ventilation performance of the carbon dioxide permeation membrane in subsequent use. SUMMARY

[0006] The present application provides a carbon capture gas compression device and system, which aims to solve the problem that the dust on the carbon dioxide permeation membrane cannot be cleaned in time in the related art.

[0007] The carbon capture gas compression device and system of the present application comprises a filter and a compressor, the filter comprises a filter dust removal box and a dust removal mechanism, a main driven wind pump is arranged between the filter dust removal box and the compressor, an air inlet hole and an air outlet hole are formed on the filter dust removal box, the main driven wind pump is located at the air outlet hole, the dust removal mechanism comprises a supporting frame, an electrostatic dust removal rod and a carbon dioxide permeation membrane, the supporting frame is connected with the inner wall of the filter dust removal box, and the carbon dioxide permeation membrane is in contact with the side of the supporting frame facing the air inlet hole; the supporting frame comprises a plurality of supporting cross bars arranged side by side, the electrostatic dust removal rod is located on the side of the carbon dioxide permeation membrane away from the supporting cross bars, the dust removal mechanism further comprises a suction pipe and a dust removal air pipe, the end of the suction pipe is connected with the inner wall of the filter dust removal box, a suction hole is formed in the side wall of the filter dust removal box and communicates with the suction pipe, the dust removal air pipe communicates with the suction hole, and the electrostatic dust removal rod is located in the suction pipe; a dust removal hole is formed in the pipe wall of the suction pipe, and the dust removal hole faces the carbon dioxide permeation membrane when the air flows in the dust removal air pipe.

[0008] The effect is that during the operation of the device, the airflow passes through the carbon dioxide permeation membrane, and part of the dust particles that cannot pass through are accumulated on the side of the carbon dioxide permeation membrane facing the electrostatic dust removal rod; after a period of operation, the main driven wind pump stops running, the electrostatic dust removal rod is started, and under the action of the electric charge, most of the dust on the carbon dioxide permeation membrane is adsorbed on the surface of the electrostatic dust removal rod; the dust on the surface of the electrostatic dust removal rod can be separated from the filter dust removal box by inputting the negative pressure airflow in the suction pipe through the dust removal air pipe, and the dust removal hole can transfer the negative pressure airflow in the suction pipe to the surface of the carbon dioxide permeation membrane to suck the dust that is not removed by the electrostatic action, thereby improving the dust removal effect to a certain extent.

[0009] Preferably, the suction pipe and the electrostatic dust removal rod are coaxial, the suction pipe comprises a fixed cylinder shell and a movable cylinder shell, the fixed cylinder shell is fixedly connected with the inner wall of the filter dust removal box, an adjusting long slot is formed in the side of the fixed cylinder shell facing the carbon dioxide permeation membrane, the movable cylinder shell is coaxially sleeved outside the fixed cylinder shell and is coaxially rotatably arranged relative to the fixed cylinder shell, the dust removal hole is formed in the movable cylinder shell, and the dust removal mechanism comprises a control assembly for controlling the rotation of the movable cylinder shell.

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

[0011] The effect is that when the long gap is adjusted to be opened, the space between the carbon dioxide permeation membrane and the electrostatic dust removal rod is relatively wide, so the amount of dust directly adsorbed by the electrostatic dust removal rod is relatively large; the control rack is moved to control the rotation of the control gear, and the movable cylinder shell rotates synchronously; when the movable cylinder shell rotates to the adjusting long gap, the adjusting long gap is closed, the suction pipe is in a relatively complete tubular shape, and at this time, the dust removal hole more concentratedly transmits the negative pressure airflow in the suction pipe to the surface of the carbon dioxide permeation membrane, thereby improving the absorption effect on the dust that is not removed by the electrostatic effect.

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

[0013] The effect is that when the gas flows in the filter dust removal box, the gas flow generates a thrust on the carbon dioxide permeation membrane, each support cross bar has a structural support effect on the carbon dioxide permeation membrane, and the part of the gas flow passing through the carbon dioxide permeation membrane is located between two adjacent support cross bars, and the position of the electrostatic dust removal rod is also opposite to this part, thereby improving the efficiency and effect of electrostatic adsorption of dust during dust removal.

[0014] Preferably, the side of the carbon dioxide permeation membrane facing the support cross bar is fixedly connected with a plurality of positioning ribs, and the side of the support cross bar facing the electrostatic dust removal rod is provided with a positioning gap; the length direction of the positioning gap is parallel to the length direction of the support cross bar; the positioning gap is used for embedding the positioning rib; and the width of the carbon dioxide permeation membrane between two adjacent positioning ribs is greater than the distance between the positioning gaps on two adjacent support cross bars.

[0015] The effect is that when two continuous positioning ribs are simultaneously embedded in the corresponding positioning gaps, the carbon dioxide permeation membrane between the two positioning ribs has a downward recessed shape, which can improve the effective contact area of the gas and the membrane surface, thereby improving the gas permeation rate.

[0016] Preferably, a contraction groove is provided on the support cross bar and located in the positioning gap; a propelling body is slidably arranged in the filter dust removal box; the propelling body is located on the side of the carbon dioxide permeation membrane away from the support cross bar; the propelling body comprises a contact cross bar; the propelling body moves close to the support 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 a thrust to the carbon dioxide permeation membrane, so that the carbon dioxide permeation membrane is pushed into the positioning gap and the contraction groove.

[0017] The effect is that the contact cross bar moves close 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 closer and closer to the suction pipe. The dust remaining on it can also be subjected to stronger negative pressure adsorption, thereby improving the dust removal effect.

[0018] Preferably, the propulsion body further comprises a transmission rack block, the transmission rack block is fixedly connected to the contact cross bar, and the control gear transmits thrust to the transmission rack block.

[0019] Preferably, the control rack is meshed with the control rack at the edge of a row of control racks, a single transmission rack block is located between two adjacent control gears, a reversing gear is selectively provided between the transmission rack block and the control gear, the reversing gear is rotationally connected to the filter dust box, the reversing gear is meshed with the control gear, the transmission rack block is selectively meshed 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 that each control gear transmits torque through the transmission rack block, thereby achieving synchronous control of each suction pipe, and due to the existence of the reversing gear, even if the directions of each control gear are different, the moving directions of all the propulsion 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 electrothermal molecular sieve and an air scrubber are connected between the main air drive pump and the compressor, the electrothermal molecular sieve is located between the air scrubber and the main air drive pump, a saturated sodium bicarbonate solution is contained in the air scrubber, a connecting pipe is fixedly connected to the air scrubber, the connecting pipe is communicated with the air outlet port of the main air drive pump, and a plurality of diffusion holes are opened at one end of the connecting pipe away from the main air drive pump.

[0022] Preferably, the connecting pipe includes a rigid straight tube portion and a flexible tube portion, the rigid straight tube portion is fixedly connected to the inner wall of the air washing box, one end of the flexible tube portion is fixedly connected to the end of the rigid straight tube portion, and the end of the flexible tube portion away from the rigid straight tube portion is coaxially fixedly connected to a wind dispersion sphere, and the air dispersion holes are opened on the surface of the wind dispersion sphere.

[0023] The effect is that high-concentration carbon dioxide gas enters the scrubbing box, the hose makes the spatial position of the wind dispersion sphere uncertain, and the multiple dispersion holes make the outflow position and flow direction of the gas dispersed, thereby increasing the effective contact rate between carbon dioxide molecules and sodium bicarbonate solution, and thus improving the scrubbing effect.

[0024] By adopting the above technical solution, the beneficial effects of the present invention are:

[0025] The application carries out electrostatic adsorption and negative pressure suction treatment on the dust remaining on the surface of the carbon dioxide permeation membrane through the setting of the electrostatic dust removal rod and the suction pipe, and the support frame and the propulsion body change the form of the carbon dioxide permeation membrane under different working conditions, thereby improving the dust removal and cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the overall structure schematic diagram of the carbon capture gas compression system in the embodiment of the application.

[0027] Figure 2 It is the sectional view schematic diagram of the internal structure of the filter dust removal box in the embodiment of the application.

[0028] Figure 3 It is the sectional view schematic diagram of the structure of one row of electrostatic dust removal rods, suction pipes and support cross bars in the filter dust removal box when the gas flows in the embodiment of the application.

[0029] Figure 4 It is the sectional view schematic diagram of the internal structure of the sub-box closest to the air inlet pipe in the embodiment of the application.

[0030] Figure 5 It is the structural schematic diagram of the suction pipe and the propulsion body when the long slit is adjusted to be open in the embodiment of the application.

[0031] Figure 6 It is the sectional view schematic diagram of the structure when the propulsion body pushes the carbon dioxide permeation membrane below into the contraction groove in the embodiment of the application.

[0032] Figure 7 It is the sectional view schematic diagram of the connection structure of the control rack and the total driving rod in the embodiment of the application.

[0033] REFERENCE NUMERALS:

[0034] 1, air inlet pipe; 2, filter; 21, filter 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 rod; 312, positioning gap; 313, contraction groove; 32, electrostatic dust removal rod; 33, carbon dioxide permeable membrane; 331, positioning rib; 34, suction pipe; 341, fixed cylinder shell; 3411, adjusting long slit; 342, movable cylinder shell; 343, dust removal hole; 35, control assembly; 351, control rack; 3511, mounting screw; 352, control gear; 353, reversing gear; 36, propelling body; 361, contact cross rod; 362, transmission rack block; 37, dust removal air pipe; 4, main driving air pump; 42, electric heating molecular sieve; 43, stop valve; 44, exhaust valve; 5, gas washing tank; 51, connecting pipe; 511, straight pipe part; 512, hose part; 52, air diffusing sphere; 521, diffusing air hole; 6, compressor. DETAILED DESCRIPTION

[0035] The following Figures 1 to 7 A carbon capture gas compression device and system are described.

[0036] The embodiment discloses a carbon capture gas compression device, as Figure 1 shown, comprising an air inlet pipe 1, a filter 2, a main driving air pump 4 and a compressor 6, one end of the air inlet pipe 1 is connected with an exhaust device of an industrial equipment, a filter dust removal box 21 and the compressor 6 are communicated, the main driving air pump 4 is located between the filter 2 and the compressor 6, and the main driving air pump 4 can generate an air flow moving from the air inlet pipe 1 to the compressor 6 when working. The gas has experienced a preliminary filtration and purification when entering the air inlet pipe 1, the filter dust removal box 21 is used for further filtration and purification of the gas and mainly makes carbon dioxide molecules pass; and the compressor 6 is used for compression treatment of high-concentration carbon dioxide gas.

[0037] As Figure 1 and Figure 2As shown, the filter 2 comprises a filter dust removal box 21 and a dust removal mechanism 3, the filter dust removal box 21 is provided with an air inlet hole 211 and an air outlet hole 212, the air inlet pipe 1 is communicated with the air inlet hole 211 of the filter dust removal box 21, and the main air pump 4 is installed at the air outlet hole 212 of the filter dust removal box 21. In the 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 comprises a support frame 31, an electrostatic dust removal stick 32 and a carbon dioxide permeable membrane 33, the support frame 31 and the carbon dioxide permeable membrane 33 are fixedly connected with the inner wall of the filter dust removal box 21, the side of the carbon dioxide permeable membrane 33 and the support frame 31 facing the air inlet hole 211 is in contact, and the support frame 31 plays a role of supporting and stabilizing the shape of the carbon dioxide permeable membrane 33. The support frame 31 comprises a plurality of support cross bars 311 arranged side by side, the end of the support cross bar 311 is fixedly connected with the inner wall of the filter dust removal box 21, the length direction of the support cross bar 311 is horizontal, and the arrangement direction of the plurality of support cross bars 311 is also horizontal and perpendicular to the length direction thereof.

[0038] As shown in Figure 2 and Figure 3 , the side of the carbon dioxide permeable membrane 33 facing the support cross bar 311 is fixedly connected with a plurality of positioning ribs 331, the number of the positioning ribs 331 is consistent with and corresponds to the number of the support cross bars 311, and the material of the positioning rib 331 is polypropylene; the side of the support cross bar 311 facing the electrostatic dust removal stick 32 is provided with a positioning gap 312, 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 parallel to the positioning rib 331, 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 the two adjacent support cross bars 311, that is, when two continuous positioning ribs 331 are embedded in the corresponding positioning gaps 312, the carbon dioxide permeable membrane 33 between the two positioning ribs 331 has a downward recessed shape. The part of the carbon dioxide permeable membrane 33 between the two support cross bars 311 is a part for gas to pass through, and the downward recessed carbon dioxide permeable membrane 33 can increase the effective contact area of 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 be gathered in this part.

[0039] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the electrostatic dust-removing 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 with the inner wall of the filter dust-removing box 21. The electrostatic dust-removing rod 32 is also provided with a plurality of electrostatic dust-removing rods 32, the arrangement direction of the plurality of electrostatic dust-removing rods 32 is consistent with the arrangement direction of the support cross bar 311, the length direction of the electrostatic dust-removing rod 32 is parallel to the length direction of the support cross bar 311, and in the projection along the gas flow direction in the filter dust-removing box 21, the single support cross bar 311 is located between the adjacent two electrostatic dust-removing rods 32, that is, each electrostatic dust-removing rod 32 is located directly above the dust accumulation area on the carbon dioxide permeable membrane 33. The dust-removing mechanism 3 further comprises a suction pipe 34 and a dust-removing air pipe 37, the end of the suction pipe 34 is connected with the inner wall of the filter dust-removing box 21, the suction hole 215 in communication with the suction pipe 34 is formed in one of the side walls of the filter dust-removing box 21, and the single electrostatic dust-removing rod 32 is located in the suction pipe 34 and coaxial with the suction pipe 34; the dust-removing air pipe 37 is located outside the filter dust-removing box 21 and is in communication with the suction hole 215, and the end of the dust-removing air pipe 37 away from the filter dust-removing box 21 is connected with a negative pressure fan (not shown in the figure), so that when the negative pressure fan is started, the negative pressure airflow is generated in the suction pipe 34.

[0040] As shown in Figure 3 , Figure 5 and Figure 6 , the suction pipe 34 comprises a fixed cylinder shell 341 and a movable cylinder shell 342, the fixed cylinder shell 341 is fixedly connected with the inner wall of the filter dust-removing box 21, the side of the fixed cylinder shell 341 facing the carbon dioxide permeable membrane 33 is provided with an adjusting long slot 3411, the movable cylinder shell 342 is coaxially sleeved outside the fixed cylinder shell 341 and is arranged to rotate coaxially relative to the fixed cylinder shell 341, and the movable cylinder shell 342 is provided with a dust-removing hole 343. In the axial projection of the electrostatic dust-removing rod 32, the angle span of the fixed cylinder shell 341 is 220°, the angle span of the adjusting long slot 3411 is 140°, and the angle span of the movable cylinder shell 342 is 155°, that is, when the movable cylinder shell 342 is driven to the lower side of the electrostatic dust-removing rod 32, the adjusting long slot 3411 can be closed, and at this time, the dust-removing hole 343 is located below the electrostatic dust-removing rod 32, and the opening is directed to face the carbon dioxide permeable membrane 33.

[0041] As shown in Figure 2 , Figure 3 and Figure 7As shown, the dust removal mechanism 3 comprises a control assembly 35 for controlling the rotation of the movable cylinder shell 342, the control assembly 35 comprising a control rack 351 and a control gear 352, the control gear 352 being coaxially fixedly connected with the movable cylinder shell 342, the control rack 351 being slidingly connected with the filter dust removal box 21 in a vertical direction, the control rack 351 being engaged with the control gear 352, and the filter dust removal box 21 being connected with a driving source 22 for driving the control rack 351 to move. In order to improve the force balance, the two ends of each movable cylinder shell 342 are connected with a control gear 352. The electrostatic dust removal rods 32, the suction pipes 34 and the support cross bars 311 are all arranged in three rows along the airflow direction in the filter dust removal box 21, and the number of the electrostatic dust removal rods 32 and the suction pipes 34 in each row is five, and the number of the support cross bars 311 is four. The control rack 351 has three, and each control rack 351 corresponds to a row of control gears 352, and is engaged with the control rack 351 at the edge of the row. A propelling body 36 is slidingly arranged on the inner wall of the filter dust removal box 21 between each adjacent control rack 351, and the propelling body 36 comprises a transmission rack block 362, the two sides of the transmission rack block 362 are formed with a rack structure, and 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.

[0042] As shown in Figure 2 , Figure 7 In order to facilitate the replacement of each carbon dioxide permeation membrane 33, the filter dust removal box 21 is assembled in a split type, which is fixed by bolt connection of a plurality of sub-boxes 213, and the edges of each sub-box 213 are fixedly connected with wing edge structures for the bolts to pass through. The driving source 22 adopts a driving cylinder, which is installed on the topmost sub-box 213, and the piston rod thereof extends in a vertical direction, and the end of the piston rod is fixedly connected with a total driving rod 221, i.e. the total driving rod 221 is slidingly connected with the filter dust removal box 21 in a vertical direction. Three waist-shaped holes 214 are formed in 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; the control rack 351 is fixedly connected with a mounting screw 3511, the mounting screw 3511 passes out of the waist-shaped hole 214, and the mounting screw 3511 passes through the total driving rod 221 and is threadedly connected with a nut, so as to relatively fix the mounting screw 3511 and the total driving rod 221, and the driving source 22 controls the three control racks 351 to move synchronously through the total driving rod 221.

[0043] As shown in Figure 3 , Figure 5 and Figure 6As shown, the support crossbar 311 is provided with a contraction groove 313 in the positioning gap 312, the pushing body 36 further comprises a contact crossbar 361, the contact crossbar 361 and a transmission rack block 362 are fixedly connected, i.e. the two are synchronously moved, the contact crossbar 361 is located directly above the positioning gap 312, and the length direction of the contact crossbar 361 is parallel to the length direction of the positioning gap 312. The contact crossbar 361 is located at the central position between the two adjacent control gears 352. The transmission rack block 362 and the control gear 352 are selectively provided with a reversing gear 353, the reversing gear 353 is rotationally connected with the filter dust removal box 21, the reversing gear 353 is engaged with the control gear 352, and the transmission rack block 362 is selectively engaged with the control gear 352 or the reversing gear 353; in the process of rotating all the movable cylinder shells 342 to close the adjusting long slit 3411, the adjacent two movable cylinder shells 342 are turned in opposite directions, but due to the existence of the reversing gear 353, the widths of the adjacent transmission rack blocks 362 are different, and the moving directions of all the pushing bodies 36 are downward. After the contact crossbar 361 contacts the carbon dioxide permeation membrane 33, the contact crossbar 361 applies a pushing force to the carbon dioxide permeation membrane 33, so that the carbon dioxide permeation membrane 33 is pushed into the positioning gap 312 and the contraction groove 313, in this process, the part of the carbon dioxide permeation membrane 33 below the electrostatic dust removal rod 32 is gradually flattened, and is more and more close to the suction pipe 34, the dust remaining thereon can also be subjected to stronger negative pressure adsorption, and the dust removal effect is improved.

[0044] As Figure 1As shown, this embodiment also discloses a carbon capture gas compression system. On the basis of the above-mentioned carbon capture gas compression device, an electric molecular sieve 42 and an air scrubber 5 are connected in sequence between the main air drive pump 4 and the compressor 6. A stop valve 43 is also provided on the pipeline between the electric molecular sieve 42 and the air scrubber 5. An exhaust valve 44 is also provided between the electric molecular sieve 42 and the stop valve 43. The stop valve 43 is used to control the conduction of the pipeline between the electric molecular sieve 42 and the air scrubber 5. When the exhaust valve 44 is opened, the gas passing through the electric molecular sieve 42 can be discharged into the external environment. The scrubber 5 is filled with a saturated sodium bicarbonate solution. A connecting pipe 51 is fixedly connected to the scrubber 5. The connecting pipe 51 includes a rigid straight pipe portion 511 and a flexible pipe portion 512. One end of the rigid straight pipe portion 511 is fixedly connected to the inner wall of the scrubber 5. One end of the flexible pipe portion 512 is coaxially fixedly connected to the other end of the rigid straight pipe portion 511. The end of the flexible pipe portion 512 away from the rigid straight pipe portion 511 is coaxially fixedly connected to a wind-dispersing sphere 52. A plurality of distributed air holes 521 are evenly arranged on the surface of the wind-dispersing sphere 52. Under natural conditions, the wind-dispersing sphere 52 is immersed below the liquid level of the saturated sodium bicarbonate solution. The rigid straight pipe portion 511 is connected to the end of the stop valve 43 away from the main air-driving pump 4. The gas in the filtered dust removal box 21 enters the connecting pipe 51 of the scrubber 5 after passing through the stop valve 43, and finally flows out through the distributed air holes 521 and contacts the sodium bicarbonate solution.

[0045] The working process of this embodiment:

[0046] The main air drive pump 4 is turned on, the stop valve 43 is closed and the exhaust valve 44 is opened, the gas flows through the filter dust box 21 and finally flows out from the exhaust valve 44. In the filter dust box 21, the carbon dioxide content 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 electrothermal molecular sieve 42, a large number of carbon dioxide molecules are intercepted and adsorbed on the electrothermal 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 electrothermal molecular sieve 42 is turned on for heating, and the carbon dioxide molecules on the electrothermal molecular sieve 42 are released. The high-concentration carbon dioxide gas enters the scrubber box 5 and contacts the sodium bicarbonate solution. The gas is further purified and then enters the compressor 6 for compression.

[0047] When the filtering and dust-removing box 21 is used for a long time, the driving source 22 is started to drive the control rack 351 to move, all the movable cylinder shells 342 rotate at the same time, all the adjusting long slits 341 are closed, and all the pushing bodies 36 move downward to contact the horizontal bars 361 to push the carbon dioxide permeable membranes 33 below the horizontal bars 361 into the contraction grooves 313. Then, the external negative pressure fan is started, and the electrostatic dust-removing rod 32 is stopped from being electrified. The negative pressure air flow can absorb the dust in the static suction pipe 34 and on the carbon dioxide permeable membranes 33.

[0048] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above description and drawings are exemplary and are intended to explain the inventive concept of the present application, and should not be understood as a limitation of the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application. All other embodiments obtained by those skilled in the art without creative labor based on the embodiments of the present application are within the protection scope of the present application.

Claims

1. A carbon capture gas compression device comprises a filter and a compressor. The filter comprises a filter dust box and a dust removal mechanism. A main air drive pump is disposed between the filter dust box and the compressor. The filter dust box is provided with an air inlet and an air outlet. The main air drive pump is located at the air outlet. 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 box, and the carbon dioxide permeable membrane contacts the support frame on the side facing the air inlet. It is characterized in that The support frame includes a plurality of support cross bars arranged in parallel, the electrostatic dust removal rod is located on the side of the carbon dioxide permeable membrane away from the support cross bar, the dust removal mechanism also includes 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, the side wall of the filter dust removal box is provided with a suction hole connected to the suction pipe, the dust removal air duct is connected to the suction hole, the electrostatic dust removal rod is located in the suction pipe, and the wall of the suction pipe is provided with a dust removal hole. When air flows in the dust removal air duct, the dust removal hole faces the carbon dioxide permeable membrane; A plurality of positioning ribs are fixedly connected to the side of the carbon dioxide permeable membrane facing the support crossbar. A positioning slit is provided on the side of the support crossbar facing the electrostatic precipitator rod. The length direction of the positioning slit is parallel to the length direction of the support crossbar. The positioning ribs are embedded in the positioning slit. The width of the carbon dioxide permeable membrane between two adjacent positioning ribs is greater than the spacing between the positioning slits on the two adjacent support crossbars. The carbon dioxide permeable membrane is concave between two adjacent positioning ribs, and the dust intercepted by the carbon dioxide permeable membrane will gather in this part; Each electrostatic precipitator bar is located directly above the dust accumulation area on the carbon dioxide permeable membrane; A contraction groove is provided on the supporting cross bar and in the positioning gap, and a propulsion body is slidingly provided in the filter 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.

2. The carbon capture gas compression device according to claim 1, characterized in that: The suction pipe is coaxial with the electrostatic dust removal rod, and the suction pipe includes a fixed cylindrical shell and a movable cylindrical shell. The fixed cylindrical shell is fixedly connected to the inner wall of the filter dust removal box, and an adjustment slit is provided on the side of the fixed cylindrical shell facing the carbon dioxide permeable membrane. The movable cylindrical shell is coaxially sleeved outside the fixed cylindrical shell and is coaxially rotatable relative to the fixed cylindrical shell. The dust removal hole is opened on the movable cylindrical shell, and the dust removal mechanism includes a control component for controlling the rotation of the movable cylindrical shell.

3. The carbon capture gas compression device according to claim 2, characterized in that: 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. The filter dust removal box is connected to a driving source for driving the control rack to move.

4. The carbon capture gas compression device according to claim 3, characterized in that: 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. 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.

5. The carbon capture gas compression device according to claim 3, characterized in that: The propulsion body further comprises a transmission rack block, the transmission rack block is fixedly connected to the contact cross bar, and the control gear transmits thrust to the transmission rack block.

6. The carbon capture gas compression device according to claim 5, characterized in that: The control rack is meshed with the control rack at the edge of a row of control racks. A single transmission rack block is located between two adjacent control gears. A reversing gear is selectively provided between the transmission rack block and the control gear. The reversing gear is rotationally connected to the filter dust box. The reversing gear is meshed 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.

7. A carbon capture gas compression system, characterized in that: A carbon capture gas compression device comprising the device according to any one of claims 1 to 6, wherein an electrothermal molecular sieve and an air scrubber are connected between the main air drive pump and the compressor, the electrothermal molecular sieve is located between the air scrubber and the main air drive pump, a saturated sodium bicarbonate solution is contained in the air scrubber, a connecting pipe is fixedly connected to the air scrubber, the connecting pipe is communicated with the air outlet port of the main air drive pump, and a plurality of diffusion air holes are provided at one end of the connecting pipe away from the main air drive pump.

8. The carbon capture gas compression system according to claim 7, characterized in that: The connecting pipe includes a rigid straight tube portion and a flexible tube portion, the rigid straight tube portion is fixedly connected to the inner wall of the air washing box, one end of the flexible tube portion is fixedly connected to the end of the rigid straight tube portion, and the end of the flexible tube portion away from the rigid straight tube portion is coaxially fixedly connected to a wind dispersion sphere, and the air dispersion holes are opened on the surface of the wind dispersion sphere.

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