Membrane separation analytical gas recovery pressure swing adsorption apparatus

Abstract

The utility model relates to gas adsorption device field discloses a kind of membrane separation's analytical gas recovery pressure swing adsorption device, including adsorption tower, compressor and condenser, the bottom end fixed mounting of adsorption tower left side has inlet pipe, the inside of adsorption tower is respectively installed with first adsorbent and second adsorbent, the bottom end of first adsorbent is provided with first filter screen, the top of second adsorbent is provided with spray pipe, the top of spray pipe is provided with second filter screen.This membrane separation's analytical gas recovery pressure swing adsorption device can first filter gas by the first filter screen in adsorption tower interior, subsequently gas is adsorbed after adsorbent adsorption treatment, gas enters compressor by outlet pipe, second filter screen in the bottom of outlet pipe can be re-filtered adsorbent and gas, avoid the particle inside adsorbent and gas to cause abrasion to enter the inside of compressor, solve the problem of compressor blockage caused by adsorbent abrasion.

Description

Technical Field

[0001] This utility model relates to the technical field of gas adsorption devices, specifically a membrane separation desorption gas recovery pressure swing adsorption device. Background Technology

[0002] Gas separation membranes are selective membranes with maximum permeability. Their mechanical strength should be sufficient to withstand a certain pressure difference. Different polymer membranes have different permeability and selectivity for different types of gas molecules, thus allowing the selective separation of a specific gas from a gas mixture.

[0003] Pressure swing adsorption (PSA) is a technology that uses the selective adsorption characteristics of adsorbents on different gas components under pressure changes to separate and recover gases, thereby improving gas recovery efficiency and purity. Currently, common adsorption towers require a compressor to extract the treated gas after adsorption treatment. However, the adsorption tower outlet lacks a filtration structure, and wear of the adsorbent inside the tower can easily lead to compressor blockage.

[0004] There is an urgent need for a membrane separation-based desorption gas recovery pressure swing adsorption device to address the technical deficiencies mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a membrane separation desorption gas recovery pressure swing adsorption device to solve the problem of compressor blockage caused by adsorbent wear mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a membrane separation desorption gas recovery pressure swing adsorption device, comprising an adsorption tower, a compressor, and a condenser. An inlet pipe is fixedly installed at the bottom left side of the adsorption tower. A first adsorbent and a second adsorbent are respectively installed inside the adsorption tower. A first filter screen is provided at the bottom of the first adsorbent, and a spray pipe is provided at the top of the second adsorbent. A second filter screen is provided at the top of the spray pipe. An airflow distributor is provided between the first and second adsorbents. An outlet pipe is fixedly connected to the top of the adsorption tower and is fixedly connected to the inlet of the compressor. An exhaust pipe is fixedly connected to the outlet of the compressor and is fixedly connected to the inlet of the condenser. A first outlet is provided at the top of the condenser, and a second outlet is fixedly connected to the bottom of the condenser. Four sets of mounting slots are fixedly connected to both sides inside the adsorption tower. Floating sealing valves are installed on the outlet pipe, the exhaust pipe, and the second outlet.

[0007] As a further technical solution of this utility model, the first filter screen and the second filter screen are the same size.

[0008] As a further technical solution of this utility model, the outer surfaces of the first filter screen and the second filter screen are embedded inside the mounting slot.

[0009] As a further technical solution of this utility model, the top of the airflow distributor is equipped with flow equalizing plates at equal intervals.

[0010] As a further technical solution of this utility model, a pressure regulator is installed on the floating sealing valve via a pipeline.

[0011] As a further technical solution of this utility model, an extraction pump is installed on the right side of the adsorption tower, and the extraction pump is fixedly connected to the spray pipe through a pipeline.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the membrane separation desorption gas recovery pressure swing adsorption device not only realizes the function of facilitating the filtration of the desorption gas outlet and improving the adsorption efficiency, but also realizes the function of reducing leakage and facilitating pressure stabilization.

[0013] (1) By setting up an adsorption tower, a first filter screen, a spray pipe, a second filter screen and a mounting slot, the desorbed gas enters the interior of the adsorption tower from the inlet pipe. The first filter screen inside the adsorption tower can filter the gas first. After the gas is adsorbed by the adsorbent, it enters the compressor through the outlet pipe. The second filter screen at the bottom of the outlet pipe can filter the adsorbent and the gas again to prevent the adsorbent and the particles inside the gas from entering the compressor and causing wear. The spray pipe can clean the first filter screen while improving gas adsorption. This structure realizes the function of facilitating the filtration of the desorbed gas outlet.

[0014] (2) By setting up a first adsorbent, a second adsorbent and an airflow distributor, the first adsorbent and the second adsorbent inside the adsorption tower can adsorb the gas in two separate times. After the gas is adsorbed by the first adsorbent, it enters the second adsorbent. Before entering the second adsorbent, it passes through the airflow distributor. The uniformly opened exhaust ports and the flow equalization plate inside the airflow distributor make the gas uniformly enter the interior of the second adsorbent for secondary adsorption treatment. This structure realizes the function of facilitating the improvement of adsorption efficiency.

[0015] (3) By setting up an outlet pipe, an exhaust pipe, a floating sealing valve and a pressure regulator, the floating sealing valve on the outlet pipe and the exhaust pipe can achieve floating sealing according to the pressure change, avoiding leakage when the outlet pipe and the exhaust pipe are transporting gas. The pressure regulator used in conjunction with the floating sealing valve can monitor the pressure inside the adsorption tower and the condenser in real time. The pressure regulator can adjust the pressure of gas transport in a timely manner, thereby optimizing the tower switching logic and reducing pressure fluctuations. This structure realizes the function of reducing leakage and facilitating pressure stabilization. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a top view of the airflow distributor of this utility model;

[0018] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a front view structural diagram of the floating sealing valve of this utility model.

[0020] In the diagram: 1. Adsorption tower; 2. Inlet pipe; 3. First filter screen; 4. First adsorbent; 5. Airflow distributor; 6. Second adsorbent; 7. Spray pipe; 8. Second filter screen; 9. Outlet pipe; 10. Extraction pump; 11. Compressor; 12. Exhaust pipe; 13. Condenser; 14. First outlet; 15. Second outlet; 16. Floating sealing valve; 17. Mounting slot; 18. Flow equalization plate; 19. Pressure regulator. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides an embodiment of a membrane separation desorption gas recovery pressure swing adsorption device, including an adsorption tower 1, a compressor 11, and a condenser 13. An air inlet pipe 2 is fixedly installed at the bottom left side of the adsorption tower 1. A first adsorbent 4 and a second adsorbent 6 are respectively installed inside the adsorption tower 1. A first filter screen 3 is provided at the bottom of the first adsorbent 4. A spray pipe 7 is provided at the top of the second adsorbent 6. A second filter screen 8 is provided at the top of the spray pipe 7. An air outlet pipe 9 is fixedly connected to the top of the adsorption tower 1. The air outlet pipe 9 is fixedly connected to the air inlet of the compressor 11. An exhaust pipe 12 is fixedly connected to the air outlet of the compressor 11. The exhaust pipe 12 is fixedly connected to the air inlet of the condenser 13. A first outlet 14 is provided at the top of the condenser 13. A second outlet 15 is fixedly connected to the bottom of the condenser 13. Four sets of mounting slots 17 are fixedly connected to both sides inside the adsorption tower 1. A pump 10 is installed on the right side of the adsorption tower 1. The pump 10 is fixedly connected to the spray pipe 7 through a pipe.

[0023] The first filter screen 3 and the second filter screen 8 are the same size, and the exterior of the first filter screen 3 and the second filter screen 8 are embedded inside the mounting slot 17.

[0024] Specifically, such as Figure 1 and Figure 3 As shown, the desorbed gas enters the adsorption tower 1 through the inlet pipe 2. The first filter screen 3 inside the adsorption tower 1 can filter the gas first. After the gas is adsorbed by the adsorbent, it enters the compressor 11 through the outlet pipe 9. The second filter screen 8 at the bottom of the outlet pipe 9 can filter the adsorbent and the gas again to prevent the adsorbent and gas particles from entering the compressor 11 and causing wear. The spray pipe 7 can clean the first filter screen 3 while improving gas adsorption.

[0025] An airflow distributor 5 is provided between the first adsorbent 4 and the second adsorbent 6, and a flow equalization plate 18 is installed at equal intervals on the top of the airflow distributor 5.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, the first adsorbent 4 and the second adsorbent 6 inside the adsorption tower 1 can adsorb the gas in two stages. After the gas is adsorbed by the first adsorbent 4, it enters the second adsorbent 6. Before entering the second adsorbent 6, it passes through the airflow distributor 5. The uniformly opened exhaust ports and the flow equalization plate 18 inside the airflow distributor 5 make the gas uniformly enter the interior of the second adsorbent 6 for secondary adsorption treatment, thereby improving the adsorption efficiency.

[0027] A floating sealing valve 16 is installed on the air outlet pipe 9, the exhaust pipe 12, and the second outlet 15. A pressure regulator 19 is installed on the floating sealing valve 16 through a pipeline.

[0028] Specifically, such as Figure 1 and Figure 4 As shown, the floating sealing valves 16 on the gas outlet pipe 9 and the exhaust pipe 12 can achieve floating sealing by following pressure changes, thus preventing leakage when the gas outlet pipe 9 and the exhaust pipe 12 are transporting gas. The pressure regulator 19 used in conjunction with the floating sealing valve 16 can monitor the pressure inside the adsorption tower 1 and the condenser 13 in real time. The pressure regulator 19 can adjust the pressure of gas transport in a timely manner, thereby optimizing the tower switching logic and reducing pressure fluctuations.

[0029] Working Principle: The desorbed gas enters the adsorption tower 1 through the inlet pipe 2. The first filter 3 inside the adsorption tower 1 filters the gas first. After adsorption by the adsorbent, the gas enters the compressor 11 through the outlet pipe 9. The second filter 8 at the bottom of the outlet pipe 9 filters the adsorbent and gas again, preventing particles from entering the compressor 11 and causing wear. The spray pipe 7, while improving gas adsorption, also cleans the first filter 3. The floating sealing valve 16 on the outlet pipe 9 and exhaust pipe 12 can achieve floating sealing according to pressure changes, preventing leakage during gas delivery. The pressure regulator 19, used in conjunction with the floating sealing valve 16, can monitor the pressure inside the adsorption tower 1 and the condenser 13 in real time. The treated gas is delivered to the condenser 13 through the compressor 11. The condenser 13 condenses and recovers the gas. The first adsorbent 4 and the second adsorbent 6 inside the adsorption tower 1 can adsorb the gas in two stages. After the gas is adsorbed by the first adsorbent 4, it enters the second adsorbent 6. Before entering the second adsorbent 6, it passes through the airflow distributor 5. The evenly spaced exhaust ports and the flow equalization plate 18 inside the airflow distributor 5 ensure that the gas enters the interior of the second adsorbent 6 evenly for secondary adsorption treatment. This structure realizes the function of improving adsorption efficiency.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A membrane separation desorbed gas recovery pressure swing adsorption device, comprising an adsorption tower (1), a compressor (11), and a condenser (13), characterized in that: An air inlet pipe (2) is fixedly installed at the bottom left side of the adsorption tower (1). A first adsorbent (4) and a second adsorbent (6) are installed inside the adsorption tower (1). A first filter screen (3) is installed at the bottom of the first adsorbent (4). A spray pipe (7) is installed at the top of the second adsorbent (6). A second filter screen (8) is installed at the top of the spray pipe (7). An airflow distributor (5) is installed between the first adsorbent (4) and the second adsorbent (6). An air outlet pipe (9) is fixedly connected to the top of the adsorption tower (1). (9) is fixedly connected to the air inlet of the compressor (11), and the air outlet of the compressor (11) is fixedly connected to the exhaust pipe (12). The exhaust pipe (12) is fixedly connected to the air inlet of the condenser (13). The top of the condenser (13) is provided with a first outlet (14), and the bottom of the condenser (13) is fixedly connected to a second outlet (15). Four sets of mounting slots (17) are fixedly connected to both sides inside the adsorption tower (1). Floating sealing valves (16) are installed on the air outlet (9), the exhaust pipe (12), and the second outlet (15).

2. The membrane separation desorption gas recovery pressure swing adsorption device according to claim 1, characterized in that: The first filter screen (3) and the second filter screen (8) are the same size.

3. The membrane separation desorption gas recovery pressure swing adsorption device according to claim 1, characterized in that: The exterior of the first filter screen (3) and the second filter screen (8) are embedded inside the mounting slot (17).

4. The membrane separation desorption gas recovery pressure swing adsorption device according to claim 1, characterized in that: The top of the airflow distributor (5) is equipped with equal-spaced flow equalizers (18).

5. The membrane separation desorption gas recovery pressure swing adsorption device according to claim 1, characterized in that: A pressure regulator (19) is installed on the floating sealing valve (16) via a pipeline.

6. The membrane separation desorption gas recovery pressure swing adsorption device according to claim 1, characterized in that: An extraction pump (10) is installed on the right side of the adsorption tower (1), and the extraction pump (10) is fixedly connected to the spray pipe (7) through a pipeline.

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