Carbon dioxide capture device

Abstract

The present invention relates to the field of carbon dioxide capture, and in particular to a carbon dioxide capture device, comprising: an air guide box, and a drive motor fixed to the top of the air guide box. Specifically, a central axis extending through the interior of the air guide box is fixed to the end of the drive motor, and a plurality of liftable capture boxes are fixed to the end of the central axis. The capture boxes are arranged in a circular pattern with the central axis as the central axis. One side of the capture box has a twisted arc-shaped guide plate, and the other side of the capture box has a vertically arranged carbon dioxide separation membrane. The side of the carbon dioxide separation membrane close to the interior of the capture box is filled with a capture agent. The present invention drives the airflow to generate an upward flow through the rotation of the guide plate. When rotating at a relatively slow speed, the internal airflow is stratified, enabling targeted separation by the carbon dioxide separation membrane, and then adsorbed by the capture agent, thereby reducing the problem of oil smoke impurities adhering to the surface of the capture agent.

Description

Technical Field

[0001] The present invention relates to the field of carbon dioxide capture, and in particular to a carbon dioxide capture device. Background Art

[0002] Carbon dioxide capture technology is generally an exhaust gas treatment technology applied to the exhaust gas of various combustion equipment, usually to avoid excessive emissions of carbon dioxide. Carbon dioxide capture technology generally includes chemical absorption and physical absorption. For chemical absorption, capture agents are usually used for capture. In periodic combustion operations, such as the combustion treatment of industrial waste, the waste to be treated is usually burned in batches. During the combustion process, the exhaust gas is passed into equipment such as pipelines to capture carbon dioxide. This method will cause other exhaust gases in the exhaust gas to adhere to the surface of the capture agent, such as impurities such as oil smoke and waste residue in the exhaust gas, which seriously affects the capture effect of the capture agent on carbon dioxide. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the prior art and provides the following technical solutions:

[0004] A carbon dioxide capture device comprising an air guide box and a drive motor fixed on the top of the air guide box

[0005] Specifically, a central axis that passes through the interior of the air guide box is fixed to the end of the driving motor, and a number of liftable capture boxes are fixed to the end of the central axis. The capture boxes are distributed in a circle with the central axis as the center axis. One side of the capture box has a twisted arc-shaped guide plate, and the other side of the capture box has a vertically arranged carbon dioxide separation membrane. The side of the carbon dioxide separation membrane close to the interior of the capture box is filled with a capture agent.

[0006] The rotation of the guide plate drives the airflow to flow upward. When it rotates at a slower speed, the internal airflow is stratified. Due to the high density of carbon dioxide, it will be located in the middle or lower part of the air guide box. In this case, it can be separated in a targeted manner through the carbon dioxide separation membrane and then adsorbed with a capture agent, reducing the problem of oil smoke impurities adhering to the surface of the capture agent.

[0007] As an improvement of the above technical solution, a fixing plate, a connecting plate and a bottom plate are provided on the outer side of the central axis, and a plurality of cylinders are fixed to the end of the fixing plate away from the driving motor. The telescopic ends of the cylinders are detachably fixed to the connecting plate, and the capture box is fixed between a side of the connecting plate away from the cylinder and one of the side surfaces of the bottom plate.

[0008] A liftable connection structure is formed by a fixed plate, a connecting plate and a bottom plate, and the lifting of the equipment is controlled by a cylinder, which can achieve the purpose of controlling the height of the internal capture box and absorb the carbon dioxide inside the air guide box as much as possible.

[0009] As an improvement of the above technical solution, a temporary storage box is detachably provided on the outer side of the central axis, and the temporary storage box is arranged between the connecting plate and the bottom plate. The interior of the temporary storage box has an inner cavity, and the capture agent is arranged inside the inner cavity. The side of the inner cavity away from the capture agent has an air inlet, and the air inlet is connected to the capture box.

[0010] A separate enclosed space is provided through the temporary storage box for temporary storage of carbon dioxide, reducing the impact of the external environment on the internal storage space.

[0011] As an improvement of the above technical solution, the capture box includes a carbon dioxide separation membrane, an outer baffle and a guide plate. The upper end and the lower end of the guide plate are fixed to the connecting plate and the bottom plate respectively. The side of the guide plate close to the temporary storage box is fixed to the temporary storage box, and the outer baffle is detachably fixed to the side of the guide plate away from the temporary storage box. The outer baffle, the guide plate, the connecting plate and the bottom plate form a cavity structure with an opening on one side. The carbon dioxide separation membrane seals the opening of the cavity structure, and the air inlet is opened inside the cavity structure.

[0012] Connecting in this way can form a detachable closed cavity structure, so that when used for a long time, the various parts of the equipment can be disassembled and cleaned, reducing the impact of impurities on the various structures due to long-term use and extending the overall service life.

[0013] As an improvement of the above technical solution, a vent is provided on the top of the air guide box, and the vent is connected to the interior of the air guide box. A plurality of legs are provided on the outside of the air guide box, and the legs are distributed in a ring shape on the outside of the air guide box.

[0014] The exhaust gas transmission pipeline is connected through the vent, and the exhaust gas is sent into the interior through the vent. The air guide box is used to separate gas and temporarily store gas. After the carbon dioxide treatment is completed, the exhaust gas needs to be transported to the subsequent treatment equipment through the pipeline.

[0015] As an improvement of the above technical solution, the air guide box includes a fixed box body and a moving box body. The fixed box body is a box body with an opening at the lower end. The moving box body can be detachably fixed to the opening of the fixed box body. The connection between the fixed box body and the moving box body is in a sealed state.

[0016] By separating the air guide box into two detachable parts, operations such as cleaning and structural maintenance after long-term use can be facilitated, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the overall structure of the present invention;

[0018] Figure 2 It is an exploded structural diagram of the present invention;

[0019] Figure 3 It is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 for Figure 2 A magnified structural diagram at center A;

[0021] Figure 5 for Figure 4 Structural diagram with the outer baffle removed;

[0022] Figure 6 for Figure 3 Enlarged structural diagram at point B in the middle.

[0023] Figure numerals: 10, air guide box; 11, fixed box body; 12, moving box body; 13, support leg; 14, vent; 20, drive motor; 21, central axis; 22, fixed plate; 221, cylinder; 23, connecting plate; 24, bottom plate; 25, capture box; 251, outer baffle; 252, guide plate; 253, carbon dioxide separation membrane; 26, temporary storage box; 261, inner cavity; 262, air inlet; 263, capture agent. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] In the prior art, chemical absorption and physical absorption methods are usually used to capture carbon dioxide in combustion exhaust gas. For the chemical absorption method, a capture agent is usually used for capture. In periodic combustion operations, such as the combustion treatment of industrial waste, the waste to be treated is usually burned in batches. During the combustion process, the exhaust gas is passed into equipment such as pipelines to capture carbon dioxide. This method will cause other waste gases in the exhaust gas to adhere to the surface of the capture agent, such as impurities such as oil smoke and waste residue in the exhaust gas, which seriously affects the capture effect of the capture agent on carbon dioxide.

[0026] To solve the above problem, please refer to Figure 1-6 , provides a carbon dioxide capture device, including: an air guide box 10, and a driving motor 20 fixed to the top of the air guide box 10.

[0027] Specifically, a central axis 21 that passes through the interior of the air guide box 10 is fixed to the end of the driving motor 20, and a number of liftable capture boxes 25 are fixed to the end of the central axis 21. The capture boxes 25 are distributed in a circle with the central axis 21 as the center axis. One side of the capture box 25 has a twisted arc-shaped guide plate 252, and the other side of the capture box 25 has a vertically arranged carbon dioxide separation membrane 253. The side of the carbon dioxide separation membrane 253 close to the interior of the capture box 25 is filled with a capture agent 263.

[0028] That is, the guide plate 252 forms a function similar to that of an impeller. When the drive motor 20 rotates, the guide plate 252 will rotate along with the central axis 21. The rotating guide plate 252 drives the internal airflow to flow. When the drive motor 20 flows at a slower speed, the airflow inside it will produce a smaller flow. In this case, the airflow will produce stratification due to density issues. After rotating continuously for a period of time and then standing for a period of time, the internal airflow will finally be in a stable stratified state. In this case, since the airflow inside the air guide box 10 is in a stratified state at this time, impurities and oil will be deposited at the bottom of the air guide box 10 because of their largest mass. Carbon dioxide will be in the middle or lower middle position when the gas inside the air guide box 10 is stable due to its larger density in the gas. In addition to carbon dioxide, some other gas impurities will be mixed in the carbon dioxide layer.

[0029] In the above case, the height of the capture box 25 can be adjusted to the middle position of the air guide box 10. At this time, the reverse rotating drive motor 20 will control the capture box 25 to rotate in the opposite direction. In this case, the carbon dioxide separation membrane 253 rotates with the central axis 21. The carbon dioxide separation membrane 253 will separate the carbon dioxide gas from the internal airflow. The separated gas is also mixed with some other gas impurities. Since in the above operation, there are fewer other gas impurities in the carbon dioxide layer, there is even less waste gas after passing through the carbon dioxide separation membrane 253. The separated carbon dioxide is captured by the capture agent 263 in the capture box 25, and the captured carbon dioxide can be obtained by subsequently removing the capture box 25.

[0030] During reverse rotation, since the carbon dioxide separation membrane 253 is in a vertical position, the air flow inside the air guide box 10 does not change significantly under low-speed rotation. Figure 2 and Figure 3 The capture box 25 is not necessarily limited in specifications. The capture box 25 must be set to at least the radius of the air guide box 10 to avoid being unable to drive the internal air flow, resulting in the air flow being unable to enter the carbon dioxide separation membrane 253.

[0031] In one embodiment, see Figure 2 and Figure 4A fixing plate 22, a connecting plate 23 and a bottom plate 24 are provided on the outer side of the central axis 21. Several cylinders 221 are fixed to the end of the fixing plate 22 away from the drive motor 20. The telescopic end of the cylinder 221 is detachably fixed to the connecting plate 23. The capture box 25 is fixed between the side of the connecting plate 23 away from the cylinder 221 and one of the side surfaces of the bottom plate 24.

[0032] That is, the position of the capture box 25 is limited by the connecting plate 23 and the bottom plate 24, and the capture box 25 is fixed on the outside of the central axis 21, and then fixed to the connecting plate 23 with the fixing plate 22. In this case, when the central axis 21 rotates, the connecting plate 23 and the fixing plate 22 will be driven to rotate accordingly, achieving the purpose of linkage. In addition, the height of the capture box 25 can be controlled by the cylinder 221, which can achieve the purpose of adjusting the height of the captured gas and can be freely adjusted under different impurities.

[0033] In one embodiment, see Figure 5 and Figure 6 A temporary storage box 26 is detachably provided on the outer side of the central axis 21. The temporary storage box 26 is arranged between the connecting plate 23 and the bottom plate 24. The interior of the temporary storage box 26 has an inner cavity 261. The capture agent 263 is arranged inside the inner cavity 261. The side of the inner cavity 261 away from the capture agent 263 has an air inlet 262, and the air inlet 262 is connected to the capture box 25.

[0034] The carbon dioxide captured by the capture box 25 is temporarily stored in the temporary storage box 26, so the capture agent 263 is set inside the temporary storage box 26, so that the carbon dioxide separated from the carbon dioxide separation membrane 253 will directly enter the temporary storage box 26 for temporary storage, which can avoid the tedious unloading inside different capture boxes 25 and make the operation more convenient.

[0035] In one embodiment, see Figure 4 and Figure 5 The capture box 25 includes a carbon dioxide separation membrane 253, an outer baffle 251 and a guide plate 252. The upper end and the lower end of the guide plate 252 are fixed to the connecting plate 23 and the bottom plate 24 respectively. The side of the guide plate 252 close to the temporary storage box 26 is fixed to the temporary storage box 26, and the outer baffle 251 and the side of the guide plate 252 away from the temporary storage box 26 are detachably fixed. The outer baffle 251, the guide plate 252, the connecting plate 23 and the bottom plate 24 form a cavity structure with an open side. The carbon dioxide separation membrane 253 seals the opening of the cavity structure, and the air inlet 262 is opened inside the cavity structure.

[0036] The outer baffle 251, the carbon dioxide separation membrane 253 and the guide plate 252 are assembled and installed to form a closed cavity structure, and then the air inlet 262 is connected to the closed cavity structure. This ensures the airtightness of the structure and can be disassembled after long-term use. After disassembly, the internal structure can be cleaned or the carbon dioxide separation membrane 253 can be replaced.

[0037] In one embodiment, see Figure 1 A vent 14 is provided on the top of the air guide box 10, which is connected to the interior of the air guide box 10. A number of support legs 13 are provided on the outside of the air guide box 10. The support legs 13 are distributed in a ring shape on the outside of the air guide box 10. The support legs 13 provide support for the overall structure, and the vent 14 is used to connect to the external exhaust gas delivery pipe.

[0038] The air guide box 10 includes a fixed box body 11 and a moving box body 12. The fixed box body 11 is a box body with an opening at the lower end. The moving box body 12 is detachably fixed to the opening of the fixed box body 11. The connection between the fixed box body 11 and the moving box body 12 is in a sealed state. The air guide box 10 is set as two separate boxes. The fixed box body 11 is used to provide support for various equipment. The support legs 13 are fixed to the outside of the fixed box body 11, and the moving box body 12 provides a collection of impurities such as oil or waste residue at the bottom. After completing the carbon dioxide collection operation, the impurities at the bottom need to be processed separately. When processing, the moving box body 12 can be directly removed. It can usually be fixed by screws or threads, which can ensure the sealing effect and facilitate subsequent disassembly.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A carbon dioxide capture device, characterized in that include: Air guide box (10); A drive motor (20) fixed to the top of the air guide box (10), wherein a central shaft (21) penetrating into the interior of the air guide box (10) is fixed to the end of the drive motor (20); A plurality of liftable capture boxes (25) are fixed to the end of the central axis (21), and the capture boxes (25) are distributed in a circular shape with the central axis (21) as the central axis. One side of the capture box (25) has a twisted arc-shaped guide plate (252), and the other side of the capture box (25) has a vertically arranged carbon dioxide separation membrane (253). The side of the carbon dioxide separation membrane (253) close to the interior of the capture box (25) is filled with a capture agent (263); A fixing plate (22), a connecting plate (23) and a bottom plate (24) are provided on the outside of the central axis (21); a plurality of cylinders (221) are fixed to one end of the fixing plate (22) away from the drive motor (20); the telescopic ends of the cylinders (221) are detachably fixed to the connecting plate (23); and the capture box (25) is fixed between a side surface of the connecting plate (23) away from the cylinders (221) and one of the side surfaces of the bottom plate (24).

2. The carbon dioxide capture device according to claim 1, characterized in that: A temporary storage box (26) is detachably provided on the outer side of the central axis (21). The temporary storage box (26) is provided between the connecting plate (23) and the bottom plate (24). The interior of the temporary storage box (26) comprises an inner cavity (261). The capturing agent (263) is only provided inside the inner cavity (261). The inner cavity (261) has an air inlet (262) on a side away from the capturing agent (263). The air inlet (262) is communicated with the capturing box (25).

3. The carbon dioxide capture device according to claim 2, characterized in that: The capture box (25) includes a carbon dioxide separation membrane (253), an outer baffle (251) and a guide plate (252). The upper end and the lower end of the guide plate (252) are fixed to the connecting plate (23) and the bottom plate (24) respectively. The side of the guide plate (252) close to the temporary storage box (26) is fixed to the temporary storage box (26). The outer baffle (251) and the side of the guide plate (252) away from the temporary storage box (26) are detachably fixed. The outer baffle (251), the guide plate (252), the connecting plate (23) and the bottom plate (24) form a cavity structure with an opening on one side. The carbon dioxide separation membrane (253) closes the opening of the cavity structure. The air inlet (262) is opened inside the cavity structure.

4. The carbon dioxide capture device according to claim 1, characterized in that: The top of the air guide box (10) is provided with an air vent (14), the air vent (14) is communicated with the interior of the air guide box (10), and the outside of the air guide box (10) is provided with a plurality of supporting legs (13), the supporting legs (13) are distributed in a ring shape on the outside of the air guide box (10).

5. The carbon dioxide capture device according to claim 4, characterized in that: The air guide box (10) comprises a fixed box body (11) and a moving box body (12), wherein the fixed box body (11) is a box body with an opening at the lower end, and the moving box body (12) is detachably fixed to the opening of the fixed box body (11), and the connection between the fixed box body (11) and the moving box body (12) is in a sealed state.

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