Wellhead CO2 trapping device

Abstract

The utility model provides a wellhead CO2 trapping device, which belongs to the technical field of trapping and comprises a cylinder, a trapping mechanism, a sealing cover and a partition plate, two gas outlet pipes are arranged at the top of the cylinder, a gas inlet pipe is arranged at the bottom of the cylinder, a leakage cylinder is arranged at the bottom of the cylinder, and the gas inlet pipe is connected with the sealing cover; the trapping mechanism is arranged at the upper part in the cylinder; the partition plate is positioned at the lower part in the cylinder; a filtering mechanism is arranged below the partition plate and located in the cylinder. The filtering mechanism is connected with a beating mechanism; and the beating mechanism is fixed at the lower part of the outer side wall of the cylinder. A filtering mechanism is arranged, a rectangular block is inserted into a rectangular hole, then a slapping motor is started, the slapping motor drives a rotating cylinder and the rectangular block to rotate, the rectangular block drives a rotating rod and a slapping piece to rotate, the slapping piece slaps a filter screen, dust on the filter screen is slapped off, and the dust leaks out of a leakage cylinder, so that the filter screen can be cleaned, and the filter screen is prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of trapping, and particularly relates to a wellhead CO2 trapping device. BACKGROUND

[0002] Coal rock gas is an important field for future natural gas scale storage and production in China, coal rock gas adopts large-scale volume fracturing technology, and the liquid volume of single well is 30-50 thousand square meters, resulting in high fracturing cost of single well. In order to reduce the liquid volume for fracturing, Changqing Oilfield actively explores the CO2 fracturing technology of coal rock gas, and the liquid volume into the ground is greatly reduced by injecting CO2 into the formation, and the fracturing effect of the gas well is ensured, and good application prospect is shown. However, the CO2 concentration of the coal rock gas well adopting CO2 fracturing is as high as 50% or more in the initial production stage, and the corrosion of the ground system is strong, so that the gas well cannot be connected to the built ground system in the initial production stage, and there are development difficulties such as large waste of wellhead venting and mining, high environmental protection risk and the like.

[0003] It is found through retrieval that the announcement number CN108079750B discloses a gas adsorption trapping device which is composed of a gas outlet pipe, a liquid level controller, a top cover, a liquid outlet pipe, a sponge adsorption device, a liquid inlet pipe, a filter screen, a liquid buffer zone, a liquid outlet tank, an aeration pipe, a gas adsorption zone, a gas collection chamber, a gas inlet pipe, a check valve, a pressure pump, a controller, a wire, a tank body, a check valve and a liquid distribution plate; the pressure pump is controlled by the controller to control the downward flow of the adsorption liquid in the adsorption tank, and the overflow adsorption liquid flows out through the liquid outlet pipe and the liquid outlet main pipe at the top of the adsorption tank; the gas is transported into the adsorption tank through the aeration pipe, is adsorbed and collected by the sponge adsorption device in the rising process, and is subjected to subsequent treatment; the unadsorbed gas is collected in the gas collection chamber and is discharged through the gas outlet pipe for subsequent treatment, and meanwhile, the gas pressure balance in and outside the tank body is adjusted through the gas outlet pipe.

[0004] The CO2 concentration in the discharged gas is high in the initial production stage of the coal rock gas well adopting CO2 fracturing by taking the wellhead blowout mode, direct discharge is contrary to the current carbon emission control requirements, and a large amount of weather venting loss leads to great waste of energy. Therefore, trapping and purifying the CO2 at the wellhead of the coal rock gas well is very important for carbon emission reduction and benefit development of the coal rock gas, and is a technical bottleneck problem for key research of the coal rock gas scale promotion of CO2 fracturing. At present, there is no mature and reliable process for trapping and liquefying the CO2 at the wellhead of the coal rock gas well. Therefore, the utility model provides a CO2 trapping device for the wellhead of the coal rock gas well, which can help to realize the benefit development of the coal rock gas and ensure the carbon emission reduction target of oil and gas field development. UTILITY MODEL CONTENTS

[0005] In order to overcome the existing coal rock gas well adopting CO2 fracturing, the CO2 concentration is as high as 50% or more in the initial production stage, the surface system is strongly corrosive, the gas well cannot be connected to the built surface system in the initial production stage, there are problems of large waste of wellhead venting and high environmental protection risk, the utility model provides a wellhead CO2 trapping device, the utility model sets up trapping mechanism, connects the sealing cover with the wellhead, in this way, the gas enters from the air inlet pipe, then enters the circular groove, passes through the perforation and then enters the inside of the adsorption groove, the adsorbent adsorbs the carbon dioxide in the gas, the remaining gas is discharged from the rear air outlet pipe, and meanwhile the adsorbent can be reused; the utility model sets up the filter mechanism, and the dust on the filter screen is knocked off by the knocking piece, and the dust leaks from the leakage cylinder, so that the filter screen can be cleaned, and the filter screen is prevented from being blocked.

[0006] The technical scheme adopted by the utility model is:

[0007] A wellhead CO2 trapping device, including cylinder, trapping mechanism, sealing cover and baffle, the top of cylinder is equipped with two air outlet pipes, the bottom of cylinder is equipped with air inlet pipe, the bottom of cylinder is equipped with leakage cylinder, the air inlet pipe is connected with sealing cover;The trapping mechanism is arranged in the upper part of the cylinder, and the baffle is located in the lower part of the cylinder;The filter mechanism is arranged below the baffle and located in the cylinder;The filter mechanism is connected with the knocking mechanism, and the knocking mechanism is fixed to the lower part of the outer wall of the cylinder.

[0008] The trapping mechanism includes rotating block, heat exchange pipe, adsorbent, rotating motor and multiple heat exchange medium pipes, the rotating motor is arranged at the top of the cylinder, the output shaft of the rotating motor penetrates into the cylinder and is fixedly connected with the top of the rotating block;The outer wall of the rotating block is rotatably connected with the inner wall of the cylinder, multiple adsorption grooves are arranged on the rotating block, the heat exchange pipe is located in the adsorption groove, and the two ends of the heat exchange pipe penetrate out of the adsorption groove and are fixedly connected with the rotating block;The adsorption groove is provided with an intercepting net, and the adsorption groove is filled with the adsorbent;The heat exchange pipe is connected with the heat exchange medium pipe;The heat exchange medium pipe is arranged on the outer wall of the cylinder.

[0009] The adsorbent is a CO2 adsorbent.

[0010] The filter mechanism includes circular block, filter screen, multiple rotating rods and multiple knocking pieces, the outer wall of the circular block is rotatably connected with the inner wall of the cylinder, multiple circular grooves are arranged on the top of the circular block, a rotating rod is arranged in each circular groove, one end of the rotating rod penetrates out of the circular groove and is rotatably connected with the circular block, the knocking piece is fixed to the outer wall of the rotating rod, and a rectangular hole is arranged at the connection between the circular block and the rotating rod.

[0011] The top of the circular block is fixedly connected with the connecting block, and the top of the connecting block is fixedly connected with the bottom of the rotating block in the trapping mechanism.

[0012] The three circular grooves are arranged in a row.

[0013] The beating mechanism comprises a beating motor, a rectangular block and a rotating drum, the output shaft of the beating motor is connected with the rotating drum, the inner side wall of the cylinder is slidably connected with the outer side wall of the rotating drum, the inside of the rotating drum is fixed with a spring, the other end of the spring is fixed with the rectangular block, and the rectangular block is located in the corresponding rectangular hole of the circular block.

[0014] The beating motor is connected with the lower part of the outer side wall of the cylinder through a moving frame and a fixed plate, the fixed plate is fixedly connected with the outer side wall of the cylinder, the moving frame is slidably connected with the top of the fixed plate, and the beating motor is fixedly connected with the moving frame, and the moving frame is moved through the hydraulic rod arranged on the fixed plate.

[0015] The outer side wall of the partition plate is fixedly connected with the inner side wall of the cylinder, and the top of the partition plate is provided with a through hole penetrating up and down.

[0016] The lower end of the cylinder is provided with a plurality of supporting legs.

[0017] The utility model discloses beneficial effect:

[0018] The utility model discloses through being provided with filter mechanism, make the dust in gas when gas passes through circular groove and be blocked by filter screen, make the circular groove and adsorption groove synchronous rotation when the rotating drum rotates through the connecting block with the circular block, like this, when the circular groove rotates to the right side, start hydraulic rod, and hydraulic rod moves with the moving frame, and the moving frame moves with the beating motor and the rotating drum, and the rectangular block inserts the inside of rectangular hole, then starts beating motor, and beating motor rotates with the rotating drum and the rectangular block, and the rectangular block rotates with the rotating rod and the beating piece, and the beating piece beats filter screen, and the dust on filter screen is beaten, and the dust leaks from the leakage cylinder, so this can clean filter screen and prevent filter screen from being blocked.

[0019] The utility model discloses set up trapping mechanism, connect with well mouth like this with the sealed cover, and gas enters from the air inlet pipe, and gas then enters the circular groove, passes through the perforation and then enters the inside of adsorption groove, and the adsorbent adsorbs carbon dioxide in gas, and the remaining gas is discharged from the rear air outlet pipe, after using for a period of time, start rotating motor, and rotating motor rotates with the rotating block, and the adsorbent used moves to the front, so that the heat exchange pipe two ends in its inside and two heat exchange medium pipes are opposite, heat the used, make the pore from the adsorbent discharge, and discharge from the front air outlet pipe, then start rotating motor, and make the discharged adsorbent move to the right side, after the adsorbent in other adsorption groove uses for a period of time, start rotating motor again, and make the discharged adsorbent rotate back to the top of air inlet pipe, and use again, so that the adsorbent can be repeatedly used. DRAWINGS

[0020] Figure 1 It is the structural schematic diagram of the utility model.

[0021] Figure 2 It is the sectional view structural schematic drawing of the utility model.

[0022] Figure 3 It is the structural schematic drawing of the round block of the utility model.

[0023] Figure 4 It is the sectional view structural schematic drawing of the rotary drum of the utility model.

[0024] Figure 5 It is the structural schematic drawing of the fixed plate, hydraulic rod and moving frame in the utility model.

[0025] Figure 6 It is the bottom view structural schematic drawing of the partition plate and rotary block in the utility model.

[0026] The utility model will be further described in detail below in combination with the drawings.

[0027] In the drawings, the reference signs are:

[0028] 1, air outlet pipe; 2, cylinder; 3, heat exchange medium pipe; 4, rotary block; 5, air inlet pipe; 6, supporting leg; 7, leakage cylinder; 8, fixed plate; 9, moving frame; 10, beating motor; 11, adsorption groove; 12, perforation; 13, rotating motor; 14, filtering mechanism; 15, trapping mechanism; 16, heat exchange pipe; 17, adsorbent; 18, sealing cover; 19, partition plate; 20, rectangular hole; 21, filter screen; 22, round groove; 23, rotary rod; 24, beating piece; 25, connecting block; 26, round block; 27, rectangular block; 28, spring; 29, rotary drum; 30, hydraulic rod; 31, intercepting screen. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] Various structural schematic drawings according to the disclosed embodiments of the utility model are shown in the drawings. These drawings are not drawn to scale, wherein certain details are exaggerated for the purpose of clear expression, and certain details can be omitted. The shapes of various regions, layers and their relative size and positional relationship shown in the drawings are only exemplary, and in actuality, there can be deviations due to manufacturing tolerance or technical limitation, and the regions / layers with different shapes, sizes and relative positions can be additionally designed by those skilled in the art according to actual needs.

[0031] Embodiment 1:

[0032] To overcome the problems of existing coal and rock gas wells using CO2 fracturing, where the CO2 concentration reaches over 50% in the initial production stage, causing strong corrosiveness to the surface system and preventing connection to the existing surface system during the initial production phase, as well as high losses from wellhead venting and high environmental risks, this utility model provides... Figures 1-6 The invention discloses a CO2 capture device for wellheads. It includes a capture mechanism that connects a sealing cap to the wellhead, allowing gas to enter through the inlet pipe, then into a circular groove, passing through perforations, and finally into the adsorption tank. The adsorbent adsorbs carbon dioxide from the gas, and the remaining gas is discharged through the outlet pipe at the rear. This allows the adsorbent to be reused. The invention also includes a filtration mechanism that uses striking plates to beat the filter screen, dislodging dust from the screen. The dust leaks out through a funnel, cleaning the filter screen and preventing clogging.

[0033] A wellhead CO2 capture device includes a cylinder 2, a capture mechanism 15, a sealing cover 18, and a partition 19. The top of the cylinder 2 is provided with two air outlet pipes 1, the bottom of the cylinder 2 is provided with an air inlet pipe 5, and the bottom of the cylinder 2 is provided with a leaking cylinder 7. The air inlet pipe 5 is connected to the sealing cover 18. The capture mechanism 15 is located in the upper part of the cylinder 2, and the partition 19 is located in the lower part of the cylinder 2. A filter mechanism 14 is provided below the partition 19 and is located inside the cylinder 2. The filter mechanism 14 is connected to a striking mechanism, which is fixed to the lower part of the outer wall of the cylinder 2.

[0034] like Figure 1 and Figure 6 As shown, in this utility model, a partition 19 is provided inside the cylinder 2, a filter mechanism 14 is provided below the partition 19, and a collection mechanism 15 is provided on the partition 19; the air inlet pipe 5 is connected to the inner cavity of the cylinder 2. The filter cylinder 7 in this application is used to knock off the dust on the filter mechanism 14 and let it leak out from the filter cylinder 7, so as to clean the filter screen 21 of the filter mechanism 14 and prevent the filter screen 21 from clogging.

[0035] This invention, by setting up a filtration mechanism 14, allows the filter screen 21 to block dust in the gas as it passes through the circular groove 22. When the rotating block 4 rotates, it drives the circular block 26 to rotate via the connecting block 25, causing the circular groove 22 and the adsorption groove 11 to rotate synchronously. When the circular groove 22 rotates to the right, the hydraulic rod 30 is activated, which moves the moving frame 9. The moving frame 9 moves the striking motor 10 and the rotating drum 29, and the rectangular block 27 is inserted into the rectangular hole 20. Then, the striking motor 10 is activated, which drives the rotating drum 29 and the rectangular block 27 to rotate. The rectangular block 27 drives the rotating rod 23 and the striking plate 24 to rotate, and the striking plate 24 strikes the filter screen 21, knocking off the dust on the filter screen 21. The dust leaks out from the filter cylinder, thus cleaning the filter screen 21 and preventing it from becoming clogged.

[0036] Embodiment 2:

[0037] Based on the basis of embodiment 1, in this embodiment, preferably, the trapping mechanism 15 comprises a rotating block 4, a heat exchange pipe 16, an adsorbent 17, a rotating motor 13 and a plurality of heat exchange medium pipes 3, the rotating motor 13 is arranged at the top of the cylinder 2, the output shaft of the rotating motor 13 penetrates into the cylinder 2 and is fixedly connected with the top of the rotating block 4, the outer side wall of the rotating block 4 is rotatably connected with the inner side wall of the cylinder 2, a plurality of adsorption grooves 11 penetrating up and down are arranged on the rotating block 4, the heat exchange pipe 16 is located inside the adsorption groove 11, and both ends of the heat exchange pipe 16 penetrate out of the adsorption groove 11 and are fixedly connected with the rotating block 4, the adsorption groove 11 is internally provided with a blocking net 31, and the adsorption groove 11 is filled with the adsorbent 17, the heat exchange pipe 16 is connected with the heat exchange medium pipe 3, and the heat exchange medium pipe 3 is arranged on the outer wall of the cylinder 2.

[0038] Preferably, the adsorbent 17 is a CO2 adsorbent.

[0039] As shown in Figure 1 and Figure 2 shown in the utility model, when the gas enters the inside of the adsorption groove 11, the adsorbent 17 adsorbs carbon dioxide, and the remaining gas is discharged from the gas outlet pipe 1, after a period of use, the rotating motor 13 is started, the rotating motor 13 rotates with the rotating block 4, the used adsorbent 17 moves to the front, the heat exchange pipe 16 heats the used adsorbent 17, and the pores in the adsorbent 17 are discharged, then the rotating motor 13 is started again, the adsorbent 17 moves to the right side, after a period of use of the adsorbent 17 in other adsorption grooves 11, the rotating motor 13 is started again, the adsorbent 17 rotates back to the top of the gas inlet pipe 5 and is used again.

[0040] Preferably, the filtering mechanism 14 comprises a circular block 26, a filter screen 21, a plurality of rotating rods 23 and a plurality of beating pieces 24, the outer side wall of the circular block 26 is rotatably connected with the inner side wall of the cylinder 2, a plurality of circular grooves 22 penetrating up and down are formed in the top of the circular block 26, the rotating rod 23 is arranged in each circular groove 22, one end of the rotating rod 23 penetrates out of the circular groove 22 and is rotatably connected with the circular block 26, the beating piece 24 is fixedly connected to the outer side wall of the rotating rod 23, and the connecting portion of the circular block 26 and the rotating rod 23 is provided with a rectangular hole 20.

[0041] Preferably, the top of the circular block 26 is fixedly connected with a connecting block 25, and the top of the connecting block 25 is fixedly connected with the bottom of the rotating block 4 in the trapping mechanism 15.

[0042] Preferably, the circular groove 22 is three.

[0043] The filter screen 21 can block dust in the gas when the gas passes through the circular groove 22, the connecting block 25 drives the circular block 26 to rotate when the rotating block 4 rotates, and the circular groove 22 and the adsorption groove 11 rotate synchronously.

[0044] Preferably, the clapping mechanism comprises a clapping motor 10, a rectangular block 27 and a rotating cylinder 29, the output shaft of the clapping motor 10 is connected with the rotating cylinder 29, the inner side wall of the cylinder 2 is slidably connected with the outer side wall of the rotating cylinder 29, the spring 28 is fixed in the rotating cylinder 29, and the other end of the spring 28 is fixed with the rectangular block 27; the rectangular block 27 is located in the rectangular hole 20 corresponding to the circular block 26.

[0045] Preferably, the clapping motor 10 is connected to the lower part of the outer side wall of the cylinder 2 through the moving frame 9 and the fixed plate 8; the fixed plate 8 is fixedly connected to the outer side wall of the cylinder 2, the moving frame 9 is slidably connected to the top of the fixed plate 8, the clapping motor 10 is fixedly connected to the moving frame 9, and the moving frame 9 is moved through the hydraulic rod 30 arranged on the fixed plate 8.

[0046] As shown in Figure 3 、 Figure 4 and Figure 5 , the output shaft of the clapping motor 10 is fixed with the rotating cylinder 29, the inner side wall of the cylinder 2 is slidably connected with the outer side wall of the rotating cylinder 29, the spring 28 is fixed in the rotating cylinder 29, the other end of the spring 28 is fixed with the rectangular block 27, the filter screen 21 can block dust in the gas when the gas passes through the circular groove 22, the connecting block 25 drives the circular block 26 to rotate when the rotating block 4 rotates, and the circular groove 22 and the adsorption groove 11 rotate synchronously, so that the circular groove 22 rotates to the right side, the hydraulic rod 30 is started, the moving frame 9 is moved with the hydraulic rod 30, the moving frame 9 is moved with the clapping motor 10 and the rotating cylinder 29, the rectangular block 27 is inserted into the inside of the rectangular hole 20, then the clapping motor 10 is started, the clapping motor 10 drives the rotating cylinder 29 and the rectangular block 27 to rotate, the rectangular block 27 drives the rotating rod 23 and the clapping piece 24 to rotate, the clapping piece 24 claps the filter screen 21, the dust on the filter screen 21 is clapped and falls, and the dust leaks out of the leakage cylinder 7, so that the filter screen 21 can be cleaned, and the filter screen 21 is prevented from being blocked.

[0047] Preferably, the outer side wall of the partition plate 19 is fixedly connected with the inner side wall of the cylinder 2, and the perforation 12 penetrating through the top and the bottom is arranged on the top of the partition plate 19.

[0048] Preferably, a plurality of supporting legs 6 are arranged at the lower end of the cylinder 2.

[0049] In this invention, when gas enters the adsorption tank 11, the adsorbent 17 adsorbs carbon dioxide from the gas, and the remaining gas is discharged from the exhaust pipe 1 at the rear. After a period of use, the rotating motor 13 is started, and the adsorbent 17 is moved to the front, so that the two ends of the heat exchange tube 16 inside it are connected to the two heat exchange medium tubes 3, and the adsorbent 17 is heated, so that CO2 is discharged from the pores in the adsorbent 17 and discharged from the exhaust pipe 1 at the front. Then the rotating motor 13 is started, so that the adsorbent 17 that discharged CO2 is moved to the right side. After the adsorbent 17 in other adsorption tanks 11 has been used for a period of time, the rotating motor 13 is started again, so that the adsorbent 17 that discharged CO2 is rotated back to the top of the inlet pipe 5 for reuse. In this way, the adsorbent 17 can be reused.

[0050] In operation, the sealing cap 18 is connected to the wellhead, allowing gas to enter through the inlet pipe 5. The gas then enters the circular groove 22, passes through the perforation 12, and enters the interior of the adsorption tank 11. The adsorbent 17 adsorbs carbon dioxide from the gas, and the remaining gas is discharged through the outlet pipe 1 at the rear. After a period of use, the rotating motor 13 is started, causing the rotating block 4 to rotate. The CO2 adsorbent 17 moves to the front, connecting the two ends of the internal heat exchange tube 16 with the two heat exchange medium tubes 3, heating the CO2 and causing it to exit through the pores in the CO2 adsorbent. The CO2 is then discharged through the outlet pipe 1 at the front. The rotating motor 13 is then started again, moving the CO2 adsorbent that has discharged CO2 to the right side. After the CO2 adsorbent in the other adsorption tanks 11 has been used for a period of time, the rotating motor 13 is started again, moving the CO2 adsorbent that has discharged CO2 to the right side. The CO2 adsorbent 2 returns to the top of the inlet pipe 5 for reuse, allowing the CO2 adsorbent to be reused. When the gas passes through the circular groove 22, the filter screen 21 blocks the dust in the gas. When the rotating block 4 rotates, it drives the circular block 26 to rotate through the connecting block 25, so that the circular groove 22 and the adsorption tank 11 rotate synchronously. When the circular groove 22 rotates to the right, the hydraulic rod 30 is activated, which moves the moving frame 9. The moving frame 9 moves the striking motor 10 and the rotating drum 29. The rectangular block 27 is inserted into the rectangular hole 20. Then the striking motor 10 is activated, which drives the rotating drum 29 and the rectangular block 27 to rotate. The rectangular block 27 drives the rotating rod 23 and the striking plate 24 to rotate. The striking plate 24 strikes the filter screen 21, knocking off the dust on the filter screen 21. The dust leaks out from the funnel 7, which cleans the filter screen 21 and prevents it from clogging.

[0051] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "installation", "connection", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the above terms can be understood in the utility model according to the specific meaning of the utility model.

[0052] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model.As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0053] The above examples are only examples of the utility model and do not constitute a limitation on the scope of protection of the utility model.Any design identical or similar to the utility model falls within the scope of protection of the utility model.The device structure and method steps not described in detail in the utility model are prior art, which will not be further described in the utility model.

Claims

1. A wellhead CO2 capture device, characterized in that: The device includes a cylinder (2), a collection mechanism (15), a sealing cap (18), and a partition (19). The top of the cylinder (2) is provided with two air outlet pipes (1), the bottom of the cylinder (2) is provided with an air inlet pipe (5), and the bottom of the cylinder (2) is provided with a filter cylinder (7). The air inlet pipe (5) is connected to the sealing cap (18). The collection mechanism (15) is located in the upper part of the cylinder (2), and the partition (19) is located in the lower part of the cylinder (2). A filter mechanism (14) is provided below the partition (19), and the filter mechanism (14) is located inside the cylinder (2). The filter mechanism (14) is connected to a striking mechanism, which is fixed to the lower part of the outer wall of the cylinder (2).

2. The wellhead CO2 capture device according to claim 1, characterized in that: The collection mechanism (15) includes a rotating block (4), a heat exchange tube (16), an adsorbent (17), a rotating motor (13), and multiple heat exchange medium tubes (3). The rotating motor (13) is located at the top of the cylinder (2), and the output shaft of the rotating motor (13) passes through the cylinder (2) and is fixedly connected to the top of the rotating block (4). The outer side wall of the rotating block (4) is rotatably connected to the inner side wall of the cylinder (2). The rotating block (4) is provided with multiple vertically penetrating adsorption grooves (11). The heat exchange tube (16) is located inside the adsorption groove (11), and both ends of the heat exchange tube (16) pass through the adsorption groove (11) and are fixedly connected to the rotating block (4). The adsorption groove (11) is provided with an intercepting net (31), and the adsorption groove (11) is filled with an adsorbent (17). The heat exchange tube (16) is connected to the heat exchange medium tube (3). The heat exchange medium tube (3) is located on the outer wall of the cylinder (2).

3. A wellhead CO2 capture device according to claim 2, characterized in that: The adsorbent (17) is a CO2 adsorbent.

4. The wellhead CO2 capture device according to claim 1, characterized in that: The filtering mechanism (14) includes a circular block (26), a filter screen (21), multiple rotating rods (23) and multiple striking plates (24); the outer side wall of the circular block (26) and the inner side wall of the cylinder (2) are rotatably connected; the top of the circular block (26) is provided with multiple through-hole circular grooves (22); each circular groove (22) is provided with a rotating rod (23); one end of the rotating rod (23) passes through the circular groove (22) and is rotatably connected to the circular block (26); the striking plates (24) are fixed on the outer side wall of the rotating rod (23); a rectangular hole (20) is provided at the connection between the circular block (26) and the rotating rod (23).

5. A wellhead CO2 capture device according to claim 4, characterized in that: The top of the circular block (26) is fixedly connected to a connecting block (25), and the top of the connecting block (25) is fixedly connected to the bottom of the transfer block (4) in the collection mechanism (15).

6. A wellhead CO2 capture device according to claim 4, characterized in that: There are three circular grooves (22).

7. A wellhead CO2 capture device according to claim 1, characterized in that: The striking mechanism includes a striking motor (10), a rectangular block (27), and a rotating drum (29). The output shaft of the striking motor (10) is connected to the rotating drum (29). The inner wall of the cylindrical tube (2) and the outer wall of the rotating drum (29) are slidably connected. A spring (28) is fixed inside the rotating drum (29), and a rectangular block (27) is fixed at the other end of the spring (28). The rectangular block (27) is located in the rectangular hole (20) corresponding to the cylindrical tube (26).

8. A wellhead CO2 capture device according to claim 7, characterized in that: The striking motor (10) is connected to the lower part of the outer wall of the cylinder (2) via a movable frame (9) and a fixed plate (8); the fixed plate (8) is fixedly connected to the outer wall of the cylinder (2), the movable frame (9) is slidably connected to the top of the fixed plate (8), the striking motor (10) is fixedly connected to the movable frame (9), and the movable frame (9) is moved by a hydraulic rod (30) provided on the fixed plate (8).

9. A wellhead CO2 capture device according to claim 1, characterized in that: The outer wall of the partition (19) and the inner wall of the cylinder (2) are fixedly connected, and the top of the partition (19) is provided with a through hole (12) that runs vertically through it.

10. A wellhead CO2 capture device according to claim 1, characterized in that: The lower end of the cylinder (2) is provided with multiple support legs (6).

Images