Multi-stage biogas purification device

Abstract

The utility model discloses a multi-stage biogas purification device which is characterized in that a second purification tank, a third purification tank and a gas collection tank are respectively arranged on the right side of a first purification tank, and gas delivery pipes are fixedly connected among the first purification tank, the second purification tank, the third purification tank and the gas collection tank; a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve are respectively arranged on the gas conveying pipe among the second purification tank, the third purification tank and the gas collection tank, a branch pipe is fixedly connected to the side surface of the gas conveying pipe, a fifth electromagnetic valve is arranged on the branch pipe, a temporary storage tank is fixedly connected to the other end of the branch pipe, and a piston is arranged in the temporary storage tank; a drainage pipe is fixedly connected to the upper surface of the temporary storage tank, an induction plate is arranged below the drainage pipe, and the induction plate is electrically connected with a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve. And meanwhile, injury to personnel is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas purification and refining, in particular to a multi-stage biogas purification and refining device. Background Art

[0002] The existing biogas purification and refining device is convenient for purifying and refining biogas through structural improvements during use. However, if the tank is damaged during use, the biogas cannot be temporarily stored in time, which may cause biogas leakage, resulting in biogas waste and harm to personnel. For example, a Chinese patent discloses "a multi-stage membrane separation biogas purification device for purifying and refining biogas", and its application number is: "202121725747.5", which includes a raw gas tank, the top end of the raw gas tank is connected to a first connecting pipe, the output end of the first connecting pipe is connected to a first purification tank, and the top end of the first purification tank is connected to A second connecting pipe, the output end of the second connecting pipe is connected to a second purification tank, the top of the second purification tank is connected to a third connecting pipe, the output end of the third connecting pipe is connected to a third purification tank, the top of the third purification tank is connected to a fourth connecting pipe, the output end of the fourth connecting pipe is connected to a gas collecting tank, a plurality of filter screens are slidably connected inside the original gas tank, and the input end of the fourth connecting pipe is connected to a first solenoid valve. The above structure facilitates the purification of biogas, but when the tank body is damaged, the biogas cannot be temporarily stored, which may cause biogas leakage, resulting in waste of biogas and harm to personnel, and has limitations in use. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a multi-stage biogas purification and refining device. By providing a first purification tank, a second purification tank, a third purification tank, a gas collecting tank, a gas transmission pipe, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a branch pipe, a fifth solenoid valve, a temporary storage tank, a piston, a drain pipe, and an induction plate, the biogas can be temporarily stored when the subsequent tank body is damaged, thereby avoiding waste caused by biogas leakage and avoiding harm to personnel.

[0004] The utility model also provides a multi-stage biogas purification and refining device as described above, comprising: a first purification tank, a second purification tank, a third purification tank, and a gas collecting tank are respectively arranged on the right side of the first purification tank, a gas pipeline is fixedly connected between the first purification tank, the second purification tank, the third purification tank, and the gas collecting tank, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve are respectively arranged on the gas pipeline between the second purification tank, the third purification tank, and the gas collecting tank, a branch pipe is fixedly connected to the side surface of the gas pipeline, a fifth solenoid valve is arranged on the branch pipe, the other end of the branch pipe is fixedly connected to a temporary storage tank, a piston is arranged in the temporary storage tank, water is filled above the piston, a drain pipe is fixedly connected to the upper surface of the temporary storage tank, an induction plate is arranged below the drain pipe, the induction plate is fixedly connected to the side surface of the temporary storage tank, the induction plate is electrically connected to the second solenoid valve, the third solenoid valve, the fourth solenoid valve, and the fifth solenoid valve, through the above structure, when the tank body is damaged in the subsequent period, the biogas can be temporarily stored to avoid waste caused by biogas leakage and avoid harm to personnel.

[0005] According to a multi-stage biogas purification and refining device described in the utility model, an air intake pipe is fixedly connected to the side surface of the first purification tank, the air intake pipe passes through the side surface of the first purification tank and is connected to the first purification tank, and a first solenoid valve is arranged on the air intake pipe. Through the above structure, biogas can be transported into the first purification tank for purification, and at the same time, it can be controlled whether the biogas enters the first purification tank and the entry rate can be controlled.

[0006] According to the multi-stage biogas purification and refining device described in the utility model, a filter plate is arranged in the first purification tank, and a separation membrane is arranged above the filter plate. Through the above structure, solid impurities contained in the biogas can be filtered and carbon dioxide in the biogas can be separated.

[0007] According to the multi-stage biogas purification and refining device described in the utility model, alkaline liquid is stored in the second purification tank, and an injection pipe is fixedly connected to the upper surface of the second purification tank. A first control valve is provided on the injection pipe. Through the above structure, alkaline liquid can be injected into the second purification tank to facilitate desulfurization of biogas.

[0008] According to the multi-stage biogas purification and refining device described in the utility model, a condenser is arranged in the third purification tank, a fixed column is fixedly connected to the side surface of the condenser, the other end of the fixed column is fixedly connected to the inner wall of the third purification tank, and an activated carbon placement plate is arranged above the condenser. Through the above structure, the biogas can be dehydrated and the sulfur that may remain in the biogas can be removed.

[0009] According to a multi-stage biogas purification and refining device described in the utility model, the side surfaces of the first purification tank, the second purification tank and the third purification tank are fixedly connected with a discharge pipe, the discharge pipe runs through the side surfaces of the first purification tank, the second purification tank and the third purification tank, and is connected with the first purification tank, the second purification tank and the third purification tank. A second control valve is arranged on the discharge pipe. Through the above structure, carbon dioxide, alkaline liquid and water in the first purification tank, the second purification tank and the third purification tank can be discharged.

[0010] According to the multi-stage biogas purification and refining device described in the utility model, the first purification tank, the second purification tank, the third purification tank and the gas collecting tank are all provided with pressure detectors. Through the above structure, the pressure of the first purification tank, the second purification tank, the third purification tank and the gas collecting tank can be detected.

[0011] According to the multi-stage biogas purification and refining device described in the utility model, a water injection pipe is fixedly connected to the upper surface of the temporary storage tank, and a sixth solenoid valve is provided on the water injection pipe. Through the above structure, water can be injected into the temporary storage tank.

[0012] Beneficial Effects

[0013] Compared with the prior art, this multi-stage biogas purification and refining device, by providing a first purification tank, a second purification tank, a third purification tank, a gas collecting tank, a gas transmission pipe, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a branch pipe, a fifth solenoid valve, a temporary storage tank, a piston, a drain pipe, and an induction plate, can temporarily store biogas when the subsequent tank body is damaged, thereby avoiding waste caused by biogas leakage and avoiding harm to personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is the overall structure diagram of a multi-stage biogas purification and refining device of the utility model;

[0016] Figure 2 This is a rear structural diagram of a multi-stage biogas purification and refining device of the utility model;

[0017] Figure 3 This is a transverse cross-sectional structural diagram of a multi-stage biogas purification and refining device of the utility model;

[0018] Figure 4 This is a structural diagram of a multi-stage biogas purification and refining device and an internal structural diagram of a temporary storage tank of the utility model.

[0019] Legend:

[0020] 1. First purification tank; 2. Air intake pipe; 3. First solenoid valve; 4. Air delivery pipe; 5. Second solenoid valve; 6. Second purification tank; 7. Third solenoid valve; 8. Third purification tank; 9. Fourth solenoid valve; 10. Gas collecting tank; 11. Temporary storage tank; 12. Drain pipe; 13. Induction plate; 14. Branch pipe; 15. Fifth solenoid valve; 16. Filter plate; 17. Separation membrane; 18. Condenser; 19. Activated carbon placement plate; 20. Piston; 21. Water injection pipe; 22. Sixth solenoid valve; 23. Liquid injection pipe; 24. First control valve; 25. Discharge pipe; 26. Second control valve. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-4 The utility model embodiment is a multi-stage biogas purification and refining device, which includes: a first purification tank 1, a second purification tank 6, a third purification tank 8, and a gas collecting tank 10 are respectively arranged on the right side of the first purification tank 1, and a gas transmission pipe 4 is fixedly connected between the first purification tank 1, the second purification tank 6, the third purification tank 8, and the gas collecting tank 10, so that the first purification tank 1, the second purification tank 6, the third purification tank 8, and the gas collecting tank 10 can be connected, which is convenient for the transportation, purification and purification of biogas. The gas transmission pipe 4 between the second purification tank 6, the third purification tank 8, and the gas collecting tank 10 is respectively provided with a second solenoid valve 5, a third solenoid valve 7, and a fourth solenoid valve 9 to control the output of biogas in the corresponding tank body, and a branch pipe 14 is fixedly connected to the side surface of the gas transmission pipe 4. A fifth solenoid valve 15 is provided on the branch pipe 14 to control the circulation of the branch pipe 14. The other end of the branch pipe 14 is fixedly connected to a temporary storage tank 11 for temporarily storing biogas. A piston 20 is provided in the temporary storage tank 11 to facilitate pushing the piston 20 up and down. Water is filled above the piston 20. A drain pipe 12 is fixedly connected to the upper surface of the temporary storage tank 11 to discharge water. A sensing plate 13 is provided below the drain pipe 12 to sense pressure. The sensing plate 13 is fixedly connected to the side surface of the temporary storage tank 11. The sensing plate 13 is electrically connected to the second solenoid valve 5, the third solenoid valve 7, the fourth solenoid valve 9, and the fifth solenoid valve 15 to facilitate controlling the closing of the second solenoid valve 5, the third solenoid valve 7, the fourth solenoid valve 9, and the fifth solenoid valve 15.

[0023] An air inlet pipe 2 is fixedly connected to the side surface of the first purification tank 1. The air inlet pipe 2 passes through the side surface of the first purification tank 1 and is connected to the first purification tank 1. A first solenoid valve 3 is arranged on the air inlet pipe 2 to control the entry of biogas. A filter plate 16 is arranged in the first purification tank 1 to filter solid impurities in the biogas. A separation membrane 17 is arranged above the filter plate 16 to separate carbon dioxide from the biogas. An alkaline liquid is stored in the second purification tank 6. An injection pipe 23 is fixedly connected to the upper surface of the second purification tank 6. A first control valve 24 is arranged on the injection pipe 23 to control the injection of the alkaline liquid. A condenser 18 is arranged in the third purification tank 8 to dehydrate the biogas. A fixed column is fixedly connected to the side surface of the condenser 18, and the other end of the fixed column is fixedly connected to the inner wall of the third purification tank 8. , a condenser 18 is fixed, an activated carbon placement plate 19 is arranged above the condenser 18 to adsorb impurities in the biogas, the side surfaces of the first purification tank 1, the second purification tank 6, and the third purification tank 8 are fixedly connected with a discharge pipe 25, the discharge pipe 25 runs through the side surfaces of the first purification tank 1, the second purification tank 6, and the third purification tank 8, and is connected with the first purification tank 1, the second purification tank 6, and the third purification tank 8, a second control valve 26 is arranged on the discharge pipe 25 to control the discharge of gas and liquid, the first purification tank 1, the second purification tank 6, the third purification tank 8, and the gas collecting tank 10 are all provided with pressure detectors to detect the pressure, a water injection pipe 21 is fixedly connected to the upper surface of the temporary storage tank 11, and a sixth solenoid valve 22 is arranged on the water injection pipe 21 to control the injection of water.

[0024] Working principle: When in use, biogas is input into the first purification tank 1, solid impurities and carbon dioxide in the biogas are removed through the filter plate 16 and the separation membrane 17, desulfurization is carried out through the alkali solution in the second purification tank 6, water is removed and the remaining impurities in the biogas are adsorbed through the third purification tank 8, and finally it is transported to the gas collecting tank 10 for storage. When the tank body is damaged, the pressure detector detects the pressure change, and the solenoid valve connected to the front end of the tank body is closed. At the same time, the fifth solenoid valve 15 of the branch pipe 14 is opened, so that the biogas enters the temporary storage tank 11, pushing the piston 20 to rise. When the temporary storage tank 11 is about to be full, water is discharged from the drain pipe 12 and falls on the induction plate 13. The induction plate 13 controls the first solenoid valve 3 and the second solenoid valve 5, the third solenoid valve 7, the fourth solenoid valve 9, and the fifth solenoid valve 15 to be closed.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A multi-stage biogas purification device, characterized in that: include: A first purification tank (1), a second purification tank (6), a third purification tank (8), and a gas collecting tank (10) are respectively arranged on the right side of the first purification tank (1), a gas transmission pipe (4) is fixedly connected between the first purification tank (1), the second purification tank (6), the third purification tank (8), and the gas collecting tank (10), a second solenoid valve (5), a third solenoid valve (7), and a fourth solenoid valve (9) are respectively arranged on the gas transmission pipe (4) between the second purification tank (6), the third purification tank (8), and the gas collecting tank (10), a branch pipe (14) is fixedly connected to the side surface of the gas transmission pipe (4), and the branch pipe (14) A fifth solenoid valve (15) is arranged on the top, the other end of the branch pipe (14) is fixedly connected to a temporary storage tank (11), a piston (20) is arranged in the temporary storage tank (11), water is filled above the piston (20), a drainage pipe (12) is fixedly connected to the upper surface of the temporary storage tank (11), an induction plate (13) is arranged below the drainage pipe (12), the induction plate (13) is fixedly connected to the side surface of the temporary storage tank (11), and the induction plate (13) is electrically connected to the second solenoid valve (5), the third solenoid valve (7), the fourth solenoid valve (9), and the fifth solenoid valve (15).

2. A multi-stage biogas purification and refining device according to claim 1, characterized in that: An air intake pipe (2) is fixedly connected to the side surface of the first purification tank (1); the air intake pipe (2) passes through the side surface of the first purification tank (1) and is in communication with the first purification tank (1); and a first solenoid valve (3) is provided on the air intake pipe (2).

3. A multi-stage biogas purification and refining device according to claim 1, characterized in that: A filter plate (16) is arranged in the first purification tank (1), and a separation membrane (17) is arranged above the filter plate (16).

4. A multi-stage biogas purification and refining device according to claim 1, characterized in that: The second purification tank (6) contains alkaline liquid, and an injection pipe (23) is fixedly connected to the upper surface of the second purification tank (6), and a first control valve (24) is provided on the injection pipe (23).

5. The multi-stage biogas purification device according to claim 1, characterized in that: A condenser (18) is arranged in the third purification tank (8), a fixing column is fixedly connected to the side surface of the condenser (18), the other end of the fixing column is fixedly connected to the inner wall of the third purification tank (8), and an activated carbon placement plate (19) is arranged above the condenser (18).

6. A multi-stage biogas purification and refining device according to claim 1, characterized in that: The side surfaces of the first purification tank (1), the second purification tank (6), and the third purification tank (8) are all fixedly connected with a discharge pipe (25); the discharge pipe (25) passes through the side surfaces of the first purification tank (1), the second purification tank (6), and the third purification tank (8), and is connected to the first purification tank (1), the second purification tank (6), and the third purification tank (8); and a second control valve (26) is provided on the discharge pipe (25).

7. The multi-stage biogas purification and refining device according to claim 1, characterized in that: The first purification tank (1), the second purification tank (6), the third purification tank (8) and the gas collecting tank (10) are all provided with pressure detectors.

8. The multi-stage biogas purification and refining device according to claim 1, characterized in that: A water injection pipe (21) is fixedly connected to the upper surface of the temporary storage tank (11), and a sixth solenoid valve (22) is provided on the water injection pipe (21).

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