Ionic liquid CO2 trapping and desorbing device

Abstract

The utility model provides an ionic liquid CO2 trapping and desorbing device, which belongs to the technical field of trapping and desorbing, and comprises an absorption tower body, the outer wall of the absorption tower body is fixedly connected with a convex body, the top wall of the absorption tower body and the top wall of the convex body are fixedly connected with a tower top, and the tower top is fixedly connected with a tower bottom. The absorption tower body and one end, far away from the tower top, of the convex body are fixedly connected with a tower bottom. In order to improve the CO2 trapping efficiency and reduce the operation cost, the high-voltage electric field plate is used for reducing the binding energy between ionic liquid molecules and CO2 molecules, promoting the desorption process of CO2, reducing the heat energy consumption and remarkably reducing the energy consumption and the operation cost of the system; the viscosity of the ionic liquid is effectively reduced, the problem that the mass transfer rate of a gas-liquid interface is reduced due to high viscosity is avoided, the CO2 trapping efficiency is improved, and the problems of poor fluidity, inconvenience in operation and the like caused by high viscosity of the ionic liquid in the traditional technology are solved.

Description

Technical Field

[0001] This utility model relates to the field of capture and desorption technology, and more specifically, to an ionic liquid CO2 capture and desorption device. Background Technology

[0002] Carbon dioxide (CO2), a major component of greenhouse gases, has become a significant driver of global climate change due to its industrial emissions. Traditional flue gas capture technologies primarily rely on chemical absorption, with amine solutions widely used as absorbents. However, amine solutions suffer from the following drawbacks: 1. High energy consumption: The regeneration process of the absorbent requires a large amount of heat energy, leading to high system operating costs; 2. Environmental pollution: Amine solutions are prone to decomposition at high temperatures, generating secondary pollution; 3. Complex equipment: Traditional absorption and desorption systems require sophisticated and bulky equipment, making modularization and high efficiency difficult.

[0003] Compared to traditional absorbents, ionic liquids have attracted widespread attention in the field of CO2 capture due to the following superior properties: 1. Low volatility: avoiding the volatilization loss of amine solutions; 2. High thermal stability: suitable for multiple cycles of use; 3. High CO2 solubility: exhibiting high CO2 capture capacity.

[0004] However, ionic liquids face two major problems in industrial applications: 1. High viscosity: The high viscosity of ionic liquids limits the mass transfer rate at the gas-liquid interface, resulting in reduced capture efficiency; 2. High cost: The preparation and consumption of ionic liquids significantly increase the operating cost of the system.

[0005] Therefore, there is an urgent need for an ionic liquid CO2 capture and desorption device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an ionic liquid CO2 capture and desorption device to solve the problems mentioned in the background art.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] An ionic liquid CO2 capture and desorption device includes an absorption tower body, a protrusion fixedly connected to the outer wall of the absorption tower body, a tower top fixedly connected to both the top wall of the absorption tower body and the top wall of the protrusion, a tower bottom fixedly connected to both the end of the absorption tower body and the end of the protrusion away from the tower top, and a liquid outlet pipe fixedly connected to the outer wall of the tower bottom. The device also includes:

[0009] Support columns are symmetrically and fixedly connected to the outer wall of the absorption tower, and an installation plate is fixedly connected to the outer wall of the support column at the front end;

[0010] The liquid inlet assembly includes a liquid passage pipe fixedly connected to the outer wall of the convex body, a liquid inlet pipe uniformly distributed on the outer wall of the liquid passage pipe, a symmetrically distributed connecting pipe fixedly connected to the outer wall of the liquid inlet pipe, and a positioning ring fixedly connected to the end of the connecting pipe away from the liquid inlet pipe.

[0011] The drive assembly is located on the outer wall of the mounting plate;

[0012] An anti-adhesion component is located on the outer wall of the positioning ring.

[0013] As a preferred technical solution of this application, the drive assembly includes a drive motor fixedly connected to the outer wall of the mounting plate, a rotating column fixedly connected to the output end of the drive motor, the top and bottom of the tower being rotatably connected to the rotating column, a uniformly distributed sealing block being rotatably connected to the outer wall of the rotating column, a uniformly distributed drive bevel gear being fixedly connected to the outer wall of the rotating column, a driven bevel gear being rotatably connected to the inner wall of the sealing block, and the outer wall of the driven bevel gear meshing with the outer wall of the drive bevel gear.

[0014] As a preferred technical solution of this application, the anti-adhesion component includes a rotating block rotatably connected to the outer wall of the positioning ring, and the rotating block is fixedly connected to the driven bevel gear. A centrifuge shroud is fixedly connected to the outer wall of the rotating block. The outer wall of the centrifuge shroud has evenly distributed water holes, and the water holes are connected to the positioning ring. An evenly distributed extrusion block is fixedly connected to the outer wall of the centrifuge shroud.

[0015] As a preferred technical solution of this application, the outer wall of the centrifuge shroud is rotatably connected to a base plate, and a connecting frame is fixedly connected to the end of the base plate away from the centrifuge shroud, and the connecting frame is fixedly connected to the absorption tower body.

[0016] As a preferred technical solution of this application, the absorption tower body is fixedly connected to the inner wall of the convex body with uniformly distributed support plates, the outer wall of the support plates is provided with uniformly distributed air vents, and the top wall of the support plates is provided with packing.

[0017] As a preferred technical solution of this application, the outer wall of the rotating column is rotatably connected with uniformly distributed positioning plates, the outer wall of the positioning plates is fixedly connected with connecting blocks, and the connecting blocks are fixedly connected with sealing blocks. The connecting blocks and positioning plates are both fixedly connected with protrusions, and the connecting blocks are fixedly connected with positioning rings.

[0018] As a preferred technical solution of this application, an air outlet pipe is fixedly connected to the top wall of the tower.

[0019] As a preferred technical solution of this application, the absorption tower body is connected to a desorption tower via a flash tower and a heat exchanger, and an electric field plate is provided on the inner wall of the desorption tower.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] In the scheme of this application:

[0022] 1. By having the drive component and anti-adhesion component work together, the drive motor drives the rotating column to rotate, which in turn causes the driven bevel gear to drive the rotating block and centrifuge hood to rotate at high speed. The strong centrifugal force generated by the high speed rotation of the centrifuge hood and the extrusion block causes the liquid in the water passage to form a strong outward force, effectively breaking the agglomeration or viscous state that the ionic liquid may form due to its high viscosity, and continuously maintaining the cleanliness and smoothness of the gas-liquid mass transfer interface. This greatly improves the mass transfer rate of CO2 between the gas and liquid, thereby significantly improving the CO2 capture efficiency. This solves the problem in the prior art where the high viscosity of the ionic liquid limits the mass transfer rate at the gas-liquid interface, leading to a decrease in capture efficiency.

[0023] 2. By reducing the binding energy between ionic liquid molecules and CO2 molecules through a high-voltage electric field plate, the desorption process of CO2 is promoted, while reducing heat consumption, significantly reducing the system's energy consumption and operating costs. In addition, the device effectively reduces the viscosity of the ionic liquid through the synergistic effect of centrifugal force and extrusion blocks, avoiding the problem of decreased gas-liquid interface mass transfer rate caused by high viscosity. This innovation not only improves the CO2 capture efficiency, but also solves the problems of high viscosity of ionic liquids and the resulting poor flowability and inconvenience of operation in traditional technologies. Attached Figure Description

[0024] Figure 1 A schematic diagram of the absorption tower structure of the ionic liquid CO2 capture and desorption device provided in this application;

[0025] Figure 2 A cross-sectional view of the ionic liquid CO2 capture and desorption device provided in this application;

[0026] Figure 3 A schematic diagram of the packing section of the ionic liquid CO2 capture and desorption device provided in this application;

[0027] Figure 4 A schematic diagram of the support plate portion of the ionic liquid CO2 capture and desorption device provided in this application;

[0028] Figure 5 A schematic diagram of the rotating column section of the ionic liquid CO2 capture and desorption device provided in this application;

[0029] Figure 6 A schematic diagram of the positioning ring portion of the ionic liquid CO2 capture and desorption device provided in this application;

[0030] Figure 7 An exploded view of the sealing block portion of the ionic liquid CO2 capture and desorption device provided in this application;

[0031] Figure 8 A schematic diagram of the centrifuge shroud portion of the ionic liquid CO2 capture and desorption device provided in this application;

[0032] Figure 9 A schematic diagram of the bottom plate portion of the ionic liquid CO2 capture and desorption device provided in this application;

[0033] Figure 10 A schematic diagram of the flow structure of the ionic liquid CO2 capture and desorption device provided in this application.

[0034] The image shows:

[0035] 1. Absorption tower body; 2. Tower top; 3. Tower bottom; 4. Gas outlet pipe; 5. Liquid outlet pipe; 6. Support column; 7. Mounting plate; 8. Drive motor; 9. Rotating column; 10. Liquid inlet pipe; 11. Protrusion; 12. Positioning plate; 13. Connecting block; 14. Liquid passage pipe; 15. Connecting pipe; 16. Support plate; 17. Vent hole; 18. Packing; 19. Positioning ring; 20. Sealing block; 21. Drive bevel gear; 22. Driven bevel gear; 23. Rotating block; 24. Centrifuge hood; 25. Water passage hole; 26. Squeezing block; 27. Base plate; 28. Connecting frame; 29. ​​Desorption tower; 30. Electric field plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0037] like Figure 1-10 As shown, the ionic liquid CO2 capture and desorption device proposed in this embodiment includes an absorption tower body 1, a protrusion 11 fixedly connected to the outer wall of the absorption tower body 1, a tower top 2 fixedly connected to the top wall of both the absorption tower body 1 and the protrusion 11, a tower bottom 3 fixedly connected to the end of both the absorption tower body 1 and the protrusion 11 away from the tower top 2, and a liquid outlet pipe 5 fixedly connected to the outer wall of the tower bottom 3. The device also includes:

[0038] Support column 6 is symmetrically and fixedly connected to the outer wall of absorption tower body 1, and mounting plate 7 is fixedly connected to the outer wall of support column 6 at the front end;

[0039] The liquid inlet assembly includes a liquid inlet pipe 14 fixedly connected to the outer wall of the protrusion 11. The outer wall of the liquid inlet pipe 14 is fixedly connected with uniformly distributed liquid inlet pipes 10. The outer wall of the liquid inlet pipes 10 is fixedly connected with symmetrically distributed connecting pipes 15. The end of the connecting pipe 15 away from the liquid inlet pipe 10 is fixedly connected with a positioning ring 19. The ionic liquid is input through the liquid inlet pipe 14, diverted through the liquid inlet pipe 10, and then enters the water inlet 25 through the positioning ring 19 via the connecting pipe 15. After that, it enters the centrifuge hood 24 and is finally centrifugally dispersed in the absorption tower body 1 and the protrusion 11 by the rotation of the centrifuge hood 24.

[0040] The drive component is located on the outer wall of the mounting plate 7;

[0041] An anti-adhesion component is provided on the outer wall of the positioning ring 19.

[0042] like Figure 2 and Figure 5 As shown, in a preferred embodiment, based on the above method, the driving assembly further includes a driving motor 8 fixedly connected to the outer wall of the mounting plate 7. The output end of the driving motor 8 is fixedly connected to a rotating column 9. The top of the tower 2 and the bottom of the tower 3 are both rotatably connected to the rotating column 9. The outer wall of the rotating column 9 is rotatably connected to uniformly distributed sealing blocks 20. The outer wall of the rotating column 9 is fixedly connected to uniformly distributed driving bevel gears 21. The inner wall of the sealing block 20 is rotatably connected to a driven bevel gear 22, and the outer wall of the driven bevel gear 22 meshes with the outer wall of the driving bevel gear 21. When the ionic liquid enters the centrifuge hood 24, the output end of the driving motor 8 drives the rotating column 9 to rotate, which in turn drives the driving bevel gear 21 to rotate, and the driven bevel gear 22 to rotate.

[0043] like Figure 7-9 As shown, in a preferred embodiment, based on the above method, the anti-adhesion component further includes a rotating block 23 rotatably connected to the outer wall of the positioning ring 19, and the rotating block 23 is fixedly connected to the driven bevel gear 22. A centrifuge shroud 24 is fixedly connected to the outer wall of the rotating block 23. The outer wall of the centrifuge shroud 24 has evenly distributed water holes 25, and the water holes 25 are connected to the positioning ring 19. An evenly distributed pressing block 26 is fixedly connected to the outer wall of the centrifuge shroud 24. The driven bevel gear 22 drives the rotating block 23 to rotate, and the centrifuge shroud 24 and pressing block 26 on the rotating block 23 rotate accordingly. The centrifuge shroud 24 is placed at an angle to facilitate the free fall of the ionic liquid and the rotation of the ionic liquid carried by the pressing block 26, thereby generating a strong centrifugal force to prevent the ionic liquid from adhering. The ionic liquid is thrown out through the gap between the centrifuge shroud 24 and the bottom plate 27.

[0044] like Figure 2As shown, in a preferred embodiment, based on the above method, a base plate 27 is rotatably connected to the outer wall of the centrifuge shroud 24. A connecting frame 28 is fixedly connected to the end of the base plate 27 away from the centrifuge shroud 24, and the connecting frame 28 is fixedly connected to the absorption tower body 1. The base plate 27 provides auxiliary rotational support for the centrifuge shroud 24, and the space formed between the base plate 27 and the centrifuge shroud 24 facilitates the generation of huge centrifugal force.

[0045] like Figure 2-4 As shown, in a preferred embodiment, based on the above method, the absorption tower body 1 and the inner wall of the protrusion 11 are further provided with uniformly distributed support plates 16. The outer wall of the support plates 16 is provided with uniformly distributed air vents 17. The top wall of the support plates 16 is provided with packing material 18. Gas flows in through the air inlet (not shown in the figure) at the bottom of the absorption tower body 1 and passes through the air vents 17 to react with the ionic liquid. The packing material 18 helps to prevent the flow rate of the ionic liquid and improve the reaction effect between the ionic liquid and the gas.

[0046] like Figure 7 As shown, in a preferred embodiment, based on the above method, the outer wall of the rotating column 9 is further provided with evenly distributed positioning plates 12, the outer wall of the positioning plates 12 is fixedly connected with connecting blocks 13, and the connecting blocks 13 are fixedly connected to the sealing blocks 20. The connecting blocks 13 and the positioning plates 12 are both fixedly connected to the protrusions 11, and the connecting blocks 13 are fixedly connected to the positioning rings 19. The positioning plates 12 provide rotational support for the rotating column 9, and the connecting blocks 13 enhance the stability of the sealing blocks 20 to accommodate the rotation of the centrifuge shroud 24.

[0047] like Figure 1 As shown, in a preferred embodiment, based on the above method, a gas outlet pipe 4 is fixedly connected to the top wall of the tower top 2, and the reacted liquid is discharged through the gas outlet pipe 4.

[0048] like Figure 10 As shown, in a preferred embodiment, based on the above method, the absorption tower body 1 is further connected to a desorption tower 29 via a flash tower and a heat exchanger. An electric field plate 30 is provided on the inner wall of the desorption tower 29. After the reaction, the liquid containing carbon dioxide is discharged through the liquid outlet pipe 5 and enters the desorption tower 29 through the flash tower and the heat exchanger. When the desorption tower 29 desorbs the ionic liquid, the electric field plate 30 reduces the binding energy between the ionic liquid molecules and the CO2 molecules through the electric field, promotes the desorption process of CO2, and reduces heat energy consumption, so that CO2 is separated from the ionic liquid.

[0049] Specifically, in use, the ionic liquid CO2 capture and desorption device works as follows: First, the ionic liquid is input through the liquid inlet pipe 14, then diverted through the liquid inlet pipe 10, and then enters the water inlet 25 through the positioning ring 19 via the connecting pipe 15. Afterward, it enters the centrifuge shroud 24, and finally, through the rotation of the centrifuge shroud 24, it is centrifugally dispersed within the absorption tower body 1 and the protrusion 11. When the ionic liquid enters the centrifuge shroud 24, the output of the drive motor 8 drives the rotating column 9 to rotate, which in turn drives the drive bevel gear 21 to rotate. The driven bevel gear 22 then drives the rotating block 23 to rotate, causing the centrifuge shroud 24 and the squeezing block 26 on the rotating block 23 to rotate accordingly. The centrifuge shroud 24 is angled to facilitate the free fall of the ionic liquid through the squeezing block 26. The centrifuge 6 rotates, generating a strong centrifugal force to prevent the ionic liquid from sticking together. The ionic liquid is thrown out through the gap between the centrifuge hood 24 and the bottom plate 27. The gas flows in through the air inlet (not shown in the figure) at the bottom of the absorption tower 1 and reacts with the ionic liquid through the vent 17. The purified gas is discharged through the gas outlet pipe 4 at the top of the tower 2. The liquid containing carbon dioxide after the reaction is discharged through the liquid outlet pipe 5 and enters the desorption tower 29 through the flash evaporator and heat exchanger. When the desorption tower 29 desorbs the ionic liquid, the electric field plate 30 reduces the binding energy between the ionic liquid molecules and CO2 molecules through the electric field, promoting the desorption process of CO2 and reducing heat energy consumption, so that CO2 is separated from the ionic liquid.

[0050] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. An ionic liquid CO2 capture and desorption device, comprising an absorption tower body (1), characterized in that, The outer wall of the absorption tower body (1) is fixedly connected to a protrusion (11), and the top walls of both the absorption tower body (1) and the protrusion (11) are fixedly connected to a tower top (2). The ends of both the absorption tower body (1) and the protrusion (11) away from the tower top (2) are fixedly connected to a tower bottom (3). The outer wall of the tower bottom (3) is fixedly connected to a liquid outlet pipe (5). The absorption tower also includes: Support columns (6) are symmetrically and fixedly connected to the outer wall of the absorption tower body (1), and an installation plate (7) is fixedly connected to the outer wall of the support columns (6) at the front end; The liquid inlet assembly includes a liquid passage pipe (14) fixedly connected to the outer wall of the protrusion (11), and a uniformly distributed liquid inlet pipe (10) fixedly connected to the outer wall of the liquid passage pipe (14). A symmetrically distributed connecting pipe (15) is fixedly connected to the outer wall of the liquid inlet pipe (10), and a positioning ring (19) is fixedly connected to the end of the connecting pipe (15) away from the liquid inlet pipe (10). The drive assembly is located on the outer wall of the mounting plate (7); An anti-adhesion component is provided on the outer wall of the positioning ring (19).

2. The ionic liquid CO2 capture and desorption device according to claim 1, characterized in that, The drive assembly includes a drive motor (8) fixedly connected to the outer wall of the mounting plate (7). The output end of the drive motor (8) is fixedly connected to a rotating column (9). The top (2) and bottom (3) of the tower are rotatably connected to the rotating column (9). The outer wall of the rotating column (9) is rotatably connected to a uniformly distributed sealing block (20). The outer wall of the rotating column (9) is fixedly connected to a uniformly distributed drive bevel gear (21). The inner wall of the sealing block (20) is rotatably connected to a driven bevel gear (22), and the outer wall of the driven bevel gear (22) meshes with the outer wall of the drive bevel gear (21).

3. The ionic liquid CO2 capture and desorption device according to claim 1, characterized in that, The anti-adhesion assembly includes a rotating block (23) rotatably connected to the outer wall of the positioning ring (19), and the rotating block (23) is fixedly connected to the driven bevel gear (22). A centrifuge cover (24) is fixedly connected to the outer wall of the rotating block (23). The outer wall of the centrifuge cover (24) is provided with uniformly distributed water holes (25), and the water holes (25) are connected to the positioning ring (19). The outer wall of the centrifuge cover (24) is fixedly connected with uniformly distributed extrusion blocks (26).

4. The ionic liquid CO2 capture and desorption device according to claim 3, characterized in that, The centrifuge shroud (24) is rotatably connected to a base plate (27), and a connecting frame (28) is fixedly connected to one end of the base plate (27) away from the centrifuge shroud (24), and the connecting frame (28) is fixedly connected to the absorption tower body (1).

5. The ionic liquid CO2 capture and desorption device according to claim 1, characterized in that, The absorption tower body (1) is fixedly connected to the inner wall of the protrusion (11) with a uniformly distributed support plate (16). The outer wall of the support plate (16) is provided with a uniformly distributed air vent (17), and the top wall of the support plate (16) is provided with packing (18).

6. The ionic liquid CO2 capture and desorption device according to claim 2, characterized in that, The outer wall of the rotating column (9) is rotatably connected to a uniformly distributed positioning plate (12). The outer wall of the positioning plate (12) is fixedly connected to a connecting block (13), and the connecting block (13) is fixedly connected to the sealing block (20). The connecting block (13) and the positioning plate (12) are both fixedly connected to the protrusion (11). The connecting block (13) is fixedly connected to the positioning ring (19).

7. The ionic liquid CO2 capture and desorption device according to claim 1, characterized in that, The top wall of the tower top (2) is fixedly connected to an air outlet pipe (4).

8. The ionic liquid CO2 capture and desorption device according to claim 1, characterized in that, The absorption tower body (1) is connected to a desorption tower (29) via a flash tower and a heat exchanger. An electric field plate (30) is provided on the inner wall of the desorption tower (29).

Images