A pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure

Abstract

This utility model relates to the technical field of carbon dioxide removal, and in particular to a pressure swing adsorption (PSA) carbon dioxide removal device with a novel adsorption tower structure. In use, the carbon dioxide absorption tower is filled with potassium carbonate solution. The pump is started, and the potassium carbonate solution is recycled. Waste gas enters the carbon dioxide adsorption assembly through the outlet pipe for secondary adsorption of carbon dioxide, reducing the amount of carbon dioxide released into the air. The device includes a carbon dioxide absorption tower, an inlet pipe, a pump body, a return pipe, and an inlet pipe. The top of the carbon dioxide absorption tower has an outlet pipe, and the inlet pipe is located at the input end of the carbon dioxide absorption tower. The pump body has an inlet pipe at its input end, which is connected to the bottom of the outer wall of the carbon dioxide absorption tower. The pump body has a return pipe at its output end, which is connected to the top of the outer wall of the carbon dioxide absorption tower. The device also includes a carbon dioxide adsorption assembly, which is located at the output end of the outlet pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of carbon dioxide removal, and in particular to a pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure. Background Technology

[0002] In chemical production processes, waste gas emissions are a particularly prominent issue, often containing high concentrations of carbon dioxide. Given that carbon dioxide is a major contributor to the global greenhouse effect, efficient technologies are needed to specifically adsorb and remove carbon dioxide from waste gases in order to mitigate its environmental impact.

[0003] In the prior art, patent document CN218834098U discloses a carbon dioxide removal device, including a carbon dioxide absorption tower, a carbon dioxide stripping tower, a flash tank, a feed preheater, a heat exchanger, a reboiler, a carbonate solution pump, a carbonate storage tank, a carbonate makeup pump, an air cooler, and a carbon dioxide gas-liquid separator. It also includes a mixing device comprising a mixing tank and a mixing apparatus. The mixing tank has an inlet and an outlet, and the outlet is connected to the carbonate storage tank via a pipeline. This device solves the technical problem of increased carbon dioxide content in existing ethylene oxide production equipment when increasing the reaction load or at the end of catalyst use. It is mainly used for carbon dioxide removal in the ethylene oxide production process.

[0004] During use, it was found that the above device only adsorbs carbon dioxide gas through a carbon dioxide absorption tower, and a small amount of carbon dioxide gas will remain in the exhaust gas and be emitted into the outside. The sufficiency of carbon dioxide gas adsorption needs to be further improved. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure.

[0006] This utility model discloses a pressure swing adsorption (PSA) carbon dioxide removal device with a novel adsorption tower structure, comprising a carbon dioxide absorption tower, an inlet pipe, a pump body, a reflux pipe, and an inlet pipe. The top of the carbon dioxide absorption tower has an outlet pipe, the inlet of the carbon dioxide absorption tower has an inlet pipe, the inlet of the pump body has an inlet pipe connected to the bottom of the outer wall of the carbon dioxide absorption tower, and the outlet of the pump body has a reflux pipe connected to the top of the outer wall of the carbon dioxide absorption tower. It also includes a carbon dioxide adsorption assembly, with the outlet of the inlet pipe also equipped with the carbon dioxide adsorption assembly. In operation, the carbon dioxide absorption tower is filled with potassium carbonate solution. The pump body is started, causing the potassium carbonate solution at the bottom of the carbon dioxide absorption tower to flow downwards through the inlet and reflux pipes to the top inner side of the carbon dioxide absorption tower. Waste gas enters the carbon dioxide absorption tower through the inlet pipe, where the potassium carbonate solution absorbs the carbon dioxide. The potassium carbonate solution is recycled. The waste gas then enters the carbon dioxide adsorption assembly through the outlet pipe for secondary adsorption of carbon dioxide, reducing the amount of carbon dioxide released into the air.

[0007] Preferably, the carbon dioxide adsorption assembly includes a No. 1 three-way pipe, a gas delivery pipe, an adsorption box, a No. 1 activated carbon plate, a No. 2 activated carbon plate, a No. 2 three-way pipe, an exhaust pipe, a carbon dioxide detector, and a box cover assembly. The input end of the No. 1 three-way pipe is connected to the output end of the gas delivery pipe. The two sets of output ends of the No. 1 three-way pipe are respectively connected to the input ends of one set of gas delivery pipes. The output ends of the two sets of gas delivery pipes are respectively connected to the two sets of input ends of the No. 2 three-way pipe. An exhaust pipe is provided at the output end of the No. 2 three-way pipe, and a carbon dioxide detector is provided on the exhaust pipe. Each set of gas delivery pipes is provided with one set of adsorption boxes and two sets of No. 1 valves. The adsorption boxes are located between the two sets of No. 1 valves. Each set of adsorption boxes contains one set of No. 1 activated carbon plates and one set of No. 2 activated carbon plates. Each set of adsorption boxes is connected to... The chamber lid assembly is sealed; the two sets of No. 1 valves on the first set of gas supply pipes are opened and the two sets of No. 1 valves on the second set of gas supply pipes are closed. The exhaust pipe delivers the exhaust gas, which has been adsorbed by potassium carbonate, to the first set of adsorption chambers, where it undergoes secondary adsorption through the No. 1 and No. 2 activated carbon plates. After adsorption is complete, the exhaust gas is discharged through the exhaust pipe. The carbon dioxide detector detects the carbon dioxide in the exhaust gas. After a period of use, if the carbon dioxide detector detects that the carbon dioxide content in the exhaust gas has increased, the two sets of No. 1 valves on the first set of gas supply pipes are closed and the two sets of No. 1 valves on the second set of gas supply pipes are opened, completing the switching between the two sets of adsorption chambers. The staff then replaces the No. 1 and No. 2 activated carbon plates in the first set of adsorption chambers to improve flexibility.

[0008] Preferably, the lid assembly includes a lid body, bolts, and a handle. The lid body is fixedly connected to the adsorption box by bolts, and a handle is fixedly provided on the lid body. The lid body is fixedly connected to the adsorption box by bolts, and the lid body seals the adsorption box. The staff can move the lid body by holding the handle, which improves convenience.

[0009] Preferably, it also includes a sampling tube and a sampling valve. The bottom end of the outer wall of the carbon dioxide absorption tower is connected to the input end of the sampling tube, and a sampling valve is installed on the sampling tube. Opening the sampling valve allows the solution inside the carbon dioxide absorption tower to be sampled through the sampling tube, improving convenience.

[0010] Preferably, it also includes a handle cover, on which the handle is fitted; the operator grips the handle with the handle cover, reducing the chance of the handle slipping.

[0011] Preferably, it also includes annular flat washers, with a set of annular flat washers fitted on each group of bolts; the annular flat washers increase the contact area between the bolts and the main body of the box cover, thereby improving the connection firmness.

[0012] Preferably, the sampling valve is a gate valve.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the interior of the carbon dioxide absorption tower is filled with potassium carbonate solution. The pump is started, so that the potassium carbonate solution at the bottom of the carbon dioxide absorption tower is transported to the inner top of the carbon dioxide absorption tower through the inlet pipe and the return pipe and flows from top to bottom. The waste gas enters the interior of the carbon dioxide absorption tower through the inlet pipe. The potassium carbonate solution absorbs the carbon dioxide in the waste gas. The potassium carbonate solution is recycled. The waste gas enters the carbon dioxide adsorption component through the outlet pipe for secondary adsorption of carbon dioxide, reducing the amount of carbon dioxide gas discharged into the air. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model; Figure 2 yes Figure 1 A partially enlarged structural diagram of section A in the middle; Figure 3 This is an enlarged structural diagram of the adsorption box and exhaust pipe, etc. Figure 4 yes Figure 3 A partially enlarged structural diagram of section B in the middle; Figure 5 This is an enlarged structural diagram of activated carbon plate No. 1 and activated carbon plate No. 2, etc.

[0015] The attached diagram is labeled as follows: 1. Carbon dioxide absorption tower; 2. Liquid inlet pipe; 3. Pump body; 4. Gas outlet pipe; 5. No. 1 tee pipe; 6. Gas delivery pipe; 7. Adsorption box; 8. No. 1 activated carbon plate; 9. No. 2 activated carbon plate; 10. No. 2 tee pipe; 11. Exhaust pipe; 12. Carbon dioxide detector; 13. Main body of the box cover; 14. Bolt; 15. Handle; 16. Sampling tube; 17. Sampling valve; 18. Handle sleeve; 19. Annular flat gasket; 21. Liquid return pipe; 22. Gas inlet pipe; 23. No. 1 valve. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0017] like Figures 1 to 5 As shown, this utility model discloses a pressure swing adsorption (PSA) carbon dioxide removal device with a novel adsorption tower structure, comprising a carbon dioxide absorption tower 1, an inlet pipe 2, a pump body 3, a reflux pipe 21, and an air inlet pipe 22. The top of the carbon dioxide absorption tower 1 is provided with an air outlet pipe 4, and the input end of the carbon dioxide absorption tower 1 is provided with an air inlet pipe 22. The input end of the pump body 3 is provided with an inlet pipe 2, which is connected to the bottom end of the outer wall of the carbon dioxide absorption tower 1. The output end of the pump body 3 is provided with a reflux pipe 21, and the output end of the reflux pipe 21 is connected to the top end of the outer wall of the carbon dioxide absorption tower 1. The device also includes a carbon dioxide adsorption assembly, with the output end of the air outlet pipe 4 provided with the carbon dioxide adsorption assembly. like Figure 1 , Figure 3 and Figure 5 As shown, the carbon dioxide adsorption assembly includes a first three-way pipe 5, a gas supply pipe 6, an adsorption box 7, a first activated carbon plate 8, a second activated carbon plate 9, a second three-way pipe 10, an exhaust pipe 11, a carbon dioxide detector 12, and a box cover assembly. The input end of the first three-way pipe 5 is connected to the output end of the gas outlet pipe 4. The two sets of output ends of the first three-way pipe 5 are respectively connected to the input ends of one set of gas supply pipes 6. The output ends of the two sets of gas supply pipes 6 are respectively connected to the two sets of input ends of the second three-way pipe 10. An exhaust pipe 11 is provided at the output end of the second three-way pipe 10. A carbon dioxide detector 12 is provided on the exhaust pipe 11. Each set of gas supply pipes 6 is provided with an adsorption box 7 and two sets of first valves 23. The adsorption box 7 is located between the two sets of first valves 23. Each set of adsorption boxes 7 contains a first activated carbon plate 8 and a second activated carbon plate 9. Each set of adsorption boxes 7 is sealed by the box cover assembly.

[0018] In this embodiment, during use, the carbon dioxide absorption tower 1 is filled with potassium carbonate solution. Pump 3 is started, causing the potassium carbonate solution at the bottom of the carbon dioxide absorption tower 1 to flow downwards through the inlet pipe 2 and return pipe 21 to the inner top of the carbon dioxide absorption tower 1. Waste gas enters the carbon dioxide absorption tower 1 through the inlet pipe 22, where the potassium carbonate solution absorbs the carbon dioxide. The potassium carbonate solution is recycled. The two sets of valves 23 on the first set of gas delivery pipes 6 are opened, and the two sets of valves 23 on the second set of gas delivery pipes 6 are closed. The outlet pipe 4 discharges the tail gas that has been adsorbed by potassium carbonate. The gas is delivered to the first set of adsorption boxes 7 and undergoes secondary adsorption through activated carbon plates 8 and 9. After adsorption, the exhaust gas is discharged through the exhaust pipe 11. The carbon dioxide detector 12 detects the carbon dioxide in the exhaust gas. After a period of use, the carbon dioxide detector 12 detects that the carbon dioxide content in the exhaust gas has increased. The two sets of valves 23 on the first set of gas supply pipes 6 are closed and the two sets of valves 23 on the second set of gas supply pipes 6 are opened, completing the switching of the two sets of adsorption boxes 7. The staff then replaces the activated carbon plates 8 and 9 in the first set of adsorption boxes 7. Example 2

[0019] like Figures 1 to 5 As shown, this utility model discloses a pressure swing adsorption (PSA) carbon dioxide removal device with a novel adsorption tower structure, comprising a carbon dioxide absorption tower 1, an inlet pipe 2, a pump body 3, a reflux pipe 21, and an air inlet pipe 22. The top of the carbon dioxide absorption tower 1 is provided with an air outlet pipe 4, and the input end of the carbon dioxide absorption tower 1 is provided with an air inlet pipe 22. The input end of the pump body 3 is provided with an inlet pipe 2, which is connected to the bottom end of the outer wall of the carbon dioxide absorption tower 1. The output end of the pump body 3 is provided with a reflux pipe 21, and the output end of the reflux pipe 21 is connected to the top end of the outer wall of the carbon dioxide absorption tower 1. The device also includes a carbon dioxide adsorption assembly, with the output end of the air outlet pipe 4 provided with the carbon dioxide adsorption assembly. like Figure 1 , Figure 3 and Figure 5 As shown, the carbon dioxide adsorption assembly includes a first three-way pipe 5, a gas supply pipe 6, an adsorption box 7, a first activated carbon plate 8, a second activated carbon plate 9, a second three-way pipe 10, an exhaust pipe 11, a carbon dioxide detector 12, and a box cover assembly. The input end of the first three-way pipe 5 is connected to the output end of the gas outlet pipe 4. The two sets of output ends of the first three-way pipe 5 are respectively connected to the input ends of a set of gas supply pipes 6. The output ends of the two sets of gas supply pipes 6 are respectively connected to the two sets of input ends of the second three-way pipe 10. An exhaust pipe 11 is provided at the output end of the second three-way pipe 10. A carbon dioxide detector 12 is provided on the exhaust pipe 11. Each set of gas supply pipes 6 is provided with an adsorption box 7 and two sets of first valves 23. The adsorption box 7 is located between the two sets of first valves 23. Each set of adsorption box 7 is provided with a set of first activated carbon plates 8 and a set of second activated carbon plates 9. Each set of adsorption box 7 is sealed by the box cover assembly. like Figure 3 and Figure 4 As shown, the box cover assembly includes a box cover body 13, bolts 14 and handle 15. The box cover body 13 is fixedly connected to the adsorption box 7 by bolts 14, and the handle 15 is fixedly provided on the box cover body 13. It also includes a sampling tube 16, a sampling valve 17, a handle sleeve 18, and an annular flat gasket 19. The bottom end of the outer wall of the carbon dioxide absorption tower 1 is connected to the input end of the sampling tube 16. The sampling tube 16 is equipped with a sampling valve 17. The handle 15 is fitted with a handle sleeve 18. Each set of bolts 14 is fitted with a set of annular flat gaskets 19.

[0020] In this embodiment, during use, the main body 13 of the cover is fixedly connected to the adsorption box 7 by bolts 14, and the main body 13 of the cover seals the adsorption box 7. The interior of the carbon dioxide absorption tower 1 is filled with potassium carbonate solution. The pump body 3 is started, so that the potassium carbonate solution at the bottom of the carbon dioxide absorption tower 1 is transported to the inner top of the carbon dioxide absorption tower 1 through the inlet pipe 2 and the return pipe 21 and flows from top to bottom. The waste gas enters the interior of the carbon dioxide absorption tower 1 through the inlet pipe 22. The potassium carbonate solution absorbs the carbon dioxide in the waste gas. The potassium carbonate solution is recycled. The two sets of No. 1 valves 23 on the first set of gas supply pipes 6 are opened and the two sets of No. 1 valves on the second set of gas supply pipes 6 are closed. Door 23 and exhaust pipe 4 deliver the exhaust gas, which has been adsorbed by potassium carbonate, to the first set of adsorption boxes 7. The gas undergoes secondary adsorption through activated carbon plate 8 and activated carbon plate 9. After adsorption, the exhaust gas is discharged through exhaust pipe 11. Carbon dioxide detector 12 detects the carbon dioxide in the exhaust gas. After a period of use, when the carbon dioxide detector 12 detects that the carbon dioxide content in the exhaust gas has increased, the two sets of valves 23 on the first set of air supply pipe 6 are closed and the two sets of valves 23 on the second set of air supply pipe 6 are opened, completing the switching of the two sets of adsorption boxes 7. The staff then replaces activated carbon plate 8 and activated carbon plate 9 in the first set of adsorption boxes 7.

[0021] The pump body 3 and carbon dioxide detector 12 of the pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pressure swing adsorption (PSA) carbon dioxide removal device with a novel adsorption tower structure, comprising a carbon dioxide absorption tower (1), an inlet pipe (2), a pump body (3), a reflux pipe (21), and an air inlet pipe (22), wherein an air outlet pipe (4) is provided at the top of the carbon dioxide absorption tower (1), an air inlet pipe (22) is provided at the input end of the carbon dioxide absorption tower (1), an inlet pipe (2) is provided at the input end of the pump body (3), the input end of the inlet pipe (2) is connected to the bottom end of the outer wall of the carbon dioxide absorption tower (1), and a reflux pipe (21) is provided at the output end of the pump body (3), the output end of the reflux pipe (21) is connected to the top end of the outer wall of the carbon dioxide absorption tower (1), characterized in that, It also includes a carbon dioxide adsorption component, and the outlet pipe (4) is provided with a carbon dioxide adsorption component.

2. The pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure as described in claim 1, characterized in that, The carbon dioxide adsorption assembly includes a No. 1 three-way pipe (5), a gas delivery pipe (6), an adsorption box (7), a No. 1 activated carbon plate (8), a No. 2 activated carbon plate (9), a No. 2 three-way pipe (10), an exhaust pipe (11), a carbon dioxide detector (12), and a box cover assembly. The input end of the No. 1 three-way pipe (5) is connected to the output end of the exhaust pipe (4). The two sets of output ends of the No. 1 three-way pipe (5) are respectively connected to the input end of one set of gas delivery pipes (6). The output ends of the two sets of gas delivery pipes (6) are respectively connected to the No. 2 three-way pipe (10). The two input ends of the two sets of pipes are connected. The output end of the No. 2 three-way pipe (10) is equipped with an exhaust pipe (11). A carbon dioxide detector (12) is installed on the exhaust pipe (11). Each set of gas supply pipes (6) is equipped with an adsorption box (7) and two sets of No. 1 valves (23). The adsorption box (7) is located between the two sets of No. 1 valves (23). Each set of adsorption boxes (7) is equipped with a No. 1 activated carbon plate (8) and a No. 2 activated carbon plate (9). Each set of adsorption boxes (7) is sealed by the box cover assembly.

3. The pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure as described in claim 2, characterized in that, The lid assembly includes a lid body (13), bolts (14) and a handle (15). The lid body (13) is fixedly connected to the adsorption box (7) by bolts (14), and a handle (15) is fixedly provided on the lid body (13).

4. The pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure as described in claim 1, characterized in that, It also includes a sampling tube (16) and a sampling valve (17). The bottom end of the outer wall of the carbon dioxide absorption tower (1) is connected to the input end of the sampling tube (16), and the sampling tube (16) is equipped with a sampling valve (17).

5. A pressure swing adsorption (PSA) carbon dioxide removal device with a novel adsorption tower structure as described in claim 3, characterized in that, It also includes a handle cover (18), which is fitted onto the handle (15).

6. The pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure as described in claim 3, characterized in that, It also includes annular flat washers (19), with a set of annular flat washers (19) fitted on each set of bolts (14).

7. A pressure swing adsorption carbon dioxide removal device with a novel adsorption tower structure as described in claim 4, characterized in that, The sampling valve (17) is a gate valve.

Images