Methane gas recovery system

Abstract

The utility model belongs to the technical field of methane gas absorption, and relates to a methane gas recovery system. A methane gas recovery system is arranged on a movable device, the methane gas recovery system comprises a recovery pool, a gas absorption device and a reaction liquid recovery device, the recovery pool is filled with an absorbent composition used for adsorbing methane gas, the gas absorption device is connected with a liquid inlet of the recovery pool, and the reaction liquid recovery device is connected with a liquid outlet of the recovery pool. The gas absorption device is used for absorbing methane gas and conveying the methane gas into the recovery pool, the reaction liquid recovery device is connected with a liquid outlet of the recovery pool, and the reaction liquid recovery device is used for storing an absorbent composition in the recovery pool. According to the methane gas recovery system, leaked methane gas can be absorbed, and resource waste is reduced while the safety risk of methane leakage is reduced through recovery and reutilization.

Description

Technical Field

[0001] The utility model belongs to the technical field of methane gas absorption and relates to a methane gas recovery system. Background Art

[0002] During the transportation and use of methane gas, it has the characteristic of being extremely easy to leak. If the leaked methane gas is not processed in time, it is easy to cause an explosion. Therefore, the utility model aims to provide a methane gas recovery system for absorbing and processing the leaked methane gas. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model proposes a methane gas recovery system.

[0004] A methane gas recovery system is placed on a movable device. The methane gas recovery system includes a recovery pool, a gas absorption device and a reaction liquid recovery device. The recovery pool is filled with an absorbent composition for adsorbing methane gas. The gas absorption device is connected to the liquid inlet of the recovery pool. The gas absorption device is used for absorbing methane gas and transporting it into the recovery pool. The reaction liquid recovery device is connected to the liquid outlet of the recovery pool. The reaction liquid recovery device is used for storing the absorbent composition in the recovery pool.

[0005] Further, a reaction pool and a waste liquid recovery pool are arranged inside the recovery pool. The reaction pool is filled with the absorbent composition. The reaction pool has a liquid inlet. The gas absorption device is connected to the liquid inlet of the reaction pool. The waste liquid recovery pool has a liquid outlet. The reaction liquid recovery device is connected to the liquid outlet of the waste liquid recovery pool. A liquid conveying component is arranged on the reaction pool. The liquid conveying component is used for conveying the absorbent composition in the reaction pool into the waste liquid recovery pool. An exhaust port is arranged at the top of the recovery pool. A liquid level detection unit and a pH detection unit are arranged on the recovery pool. The detection end of the liquid level detection unit is located inside the reaction pool and is used for detecting the liquid level height inside the reaction pool. The detection end of the pH detection unit is located inside the waste liquid recovery pool and is used for detecting the pH value of the liquid inside the waste liquid recovery pool.

[0006] Further, both the reaction pool and the waste liquid recovery pool are of an open-top structure, and the height of the waste liquid recovery pool is lower than that of the reaction pool. The liquid conveying component includes a paddle and a linear conveying unit. The linear conveying unit is arranged at the upper end of the reaction pool, and its conveying direction is set towards the direction of the waste liquid recovery pool. The paddle is in a strip structure and is arranged perpendicular to the conveying direction of the linear conveying unit and is fixedly connected to the linear conveying unit. The linear conveying unit drives the paddle to move towards the direction of the waste liquid recovery pool.

[0007] Furthermore, the gas absorption device includes a housing, an air compressor, and a buffer tank connected in sequence. The housing is connected to the air compressor through a corrugated pipe. An S-shaped channel is provided at the bottom of the reaction tank, and a plurality of air outlet holes are evenly distributed on the S-shaped channel. The air outlet end of the buffer tank is connected and communicated with the S-shaped channel through a pipeline.

[0008] Furthermore, a filter screen is provided on the air outlet holes of the S-shaped channel.

[0009] Furthermore, the reaction liquid recovery device includes a recovery tank and a liquid pumping unit. The liquid pumping unit is respectively connected and communicated with the liquid outlet of the waste liquid recovery tank and the liquid inlet of the recovery tank through pipelines.

[0010] Furthermore, there are four of the shims.

[0011] The beneficial effects brought by the technical solution provided by the present utility model are as follows: The methane gas recovery system of the present utility model can achieve the absorption of leaked methane gas, and can also reduce the safety risk of leaked methane and resource waste through recycling and reuse.

[0012] Specification Brief Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a methane gas recovery system of the present utility model.

[0014] The reference numerals are as follows:

[0015] 1: housing, 2: air compressor, 3: buffer tank, 4: linear conveying unit, 5: waste liquid recovery tank, 6: supercharger, 7: liquid level detection unit, 8: shim, 9: reaction tank, 10: exhaust port, 11: pH detection unit, 12: methane clathrate, 13: recovery device, 100: recovery tank. Detailed Description of the Embodiments

[0016] The following further describes the present utility model in detail with reference to embodiments, so that those skilled in the art can implement it according to the description in the specification.

[0017] It should be noted that, unless otherwise specified, the experimental methods in the following embodiments are all conventional methods, and the reagents and materials, unless otherwise specified, can all be obtained from commercial channels.

[0018] Such as Figure 1As shown in the figure, the present utility model also provides a methane gas recovery system, which includes a recovery pool 100, a gas absorption device, and a reaction liquid recovery device. The recovery pool 100 is filled with an absorbent composition for adsorbing methane gas. The gas absorption device is connected to the liquid inlet of the recovery pool 100 and is used to absorb methane gas and transport it into the recovery pool 100. The reaction liquid recovery device is connected to the liquid outlet of the recovery pool 100 and is used to store the absorbent composition in the recovery pool 100.

[0019] In the present utility model, after the gas absorption device absorbs the methane gas leaked in the air, it transports it into the recovery pool 100. The absorbent composition in the recovery pool 100 adsorbs the methane gas to form a methane clathrate 12, and then the reaction liquid recovery device pumps out the waste liquid in the recovery pool 100. The methane gas recovery system of the present utility model can absorb the leaked methane gas and can also reduce the safety risk of leaked methane and resource waste through recycling.

[0020] Among them, the absorbent composition is composed of the following components:

[0021] β-cyclodextrin, sodium oxalate, cetyltrimethylammonium bromide, methanol, and deionized water.

[0022] And by mass, β-cyclodextrin is 2.840 g, sodium oxalate is 1.34 g, 80 mg of cetyltrimethylammonium bromide, and by volume, methanol is 80 ml and deionized water is 20 ml.

[0023] Furthermore, a reaction pool 9 and a waste liquid recovery pool 5 are provided inside the recovery pool 100. The reaction pool 9 is filled with the absorbent composition. The reaction pool 9 has a liquid inlet, and the gas absorption device is connected to the liquid inlet of the reaction pool 9. The waste liquid recovery pool 5 has a liquid outlet, and the reaction liquid recovery device is connected to the liquid outlet of the waste liquid recovery pool 5. A liquid delivery assembly is provided on the reaction pool 9, and the liquid delivery assembly is used to transport the absorbent composition in the reaction pool 9 into the waste liquid recovery pool 5. An exhaust port 10 is provided at the top of the recovery pool 100, and a liquid level detection unit 7 and a pH detection unit 11 are provided on the recovery pool 100. The detection end of the liquid level detection unit 7 is located inside the reaction pool 9 and is used to detect the liquid level height inside the reaction pool 9. The detection end of the pH detection unit 11 is located inside the waste liquid recovery pool 5 and is used to detect the pH value of the liquid inside the waste liquid recovery pool 5.

[0024] In the present utility model, the reaction tank 9 and the waste liquid recovery tank 5 are separately provided to store the absorbent composition and the absorbent composition after reaction separately, ensuring the absorption effect of the absorbent composition in the reaction tank 9 and the adsorption efficiency of methane. When the liquid level detection unit 7 detects that the liquid level height of the absorbent composition in the reaction tank 9 is lower than the preset height value, it gives a detection signal to remind the operator to add the absorbent composition into the reaction tank 9. Additionally, by setting up an automatic liquid pumping device, after the liquid detection unit sends the detection signal to the automatic liquid pumping device, the automatic liquid pumping device is activated to pump the absorbent composition into the reaction tank 9. It should be noted that the automatic liquid pumping device described in the present utility model is a prior art. Preferably, the model of the liquid level detection unit 7 of the present utility model is the AIRAURRI XYW liquid level gauge.

[0025] In addition, the pH detection unit 11 of the present utility model is used to detect the pH value of the liquid in the waste liquid recovery tank 5 to ensure that the pH value of the liquid in the recovery tank is stably between 6.0 and 8.0, achieving the best absorption effect of the absorbent liquid. Preferably, the model of the pH detection unit 11 of the present utility model is the MIK-PH8.0 pH meter.

[0026] Furthermore, both the reaction tank 9 and the waste liquid recovery tank 5 have an open upper end structure, and the height of the waste liquid recovery tank 5 is lower than that of the reaction tank 9. The liquid delivery assembly includes a paddle 8 and a linear delivery unit 14. The linear delivery unit 14 is arranged at the upper end of the reaction tank 9, and its delivery direction is set towards the direction of the waste liquid recovery tank 5. The paddle 8 is in a strip structure, which is arranged perpendicular to the delivery direction of the linear delivery unit 14 and is fixedly connected to the linear delivery unit 14. The linear delivery unit 14 drives the paddle 8 to move towards the direction of the waste liquid recovery tank 5.

[0027] In the present utility model invention, the reaction tank 9 and the waste liquid recovery tank 5 share a side wall, and the height of the waste liquid recovery tank 5 is lower than that of the reaction tank 9, which is beneficial for the absorbent composition in the reaction tank 9 to enter the waste liquid recovery tank 5. As a specific embodiment of the present utility model, the linear conveying unit 14 can be a material conveying structure composed of a conveyor belt and a motor, or can be a linear module. Preferably, the linear conveying unit 14 of the present utility model is a material conveying structure composed of a conveyor belt and a motor, and the conveying direction of the conveyor belt is set towards the waste liquid recovery tank 5. A plurality of paddles 8 are provided to improve the conveying efficiency of the absorbent composition. Specifically, the present utility model is provided with 4 paddles 8, and the 4 paddles 8 are arranged at intervals along the conveying direction of the conveyor belt and fixed on the conveyor belt. By setting the motor to rotate forward and reverse, the conveyor belt is driven to reciprocate, and then the paddle 8 is driven to reciprocate. During the movement of the paddle 8, the absorbent composition on the upper layer of the reaction tank 9 is conveyed into the waste liquid recovery tank 5. The material conveying structure composed of a conveyor belt and a motor is a prior art, and the present utility model will not elaborate on its working principle.

[0028] Further, the gas absorption device includes a cover body 1, an air compressor 2 and a buffer tank 3 connected in sequence. The cover body is connected to the air compressor through a corrugated pipe. An S-shaped channel is provided at the bottom of the reaction tank 9, and a plurality of air outlet holes are evenly distributed on the S-shaped channel. The air outlet end of the buffer tank 3 is connected and communicated with the S-shaped channel through a pipeline.

[0029] In the present utility model, the cover body 1 is of a horn-shaped structure to increase the absorption area of methane gas. Preferably, the pipeline connecting the cover body 1 and the air compressor 2 can be a corrugated pipe with a telescopic function to expand the moving range of the cover body 1 and the absorption range of methane gas. While facilitating the storage of the cover body 1, it can also increase the absorption area of the cover body 1 for methane gas. Under the action of the air compressor 2, the leaked methane gas begins to be absorbed. The methane gas first enters the buffer tank 3, and after the pressure is stabilized, the mixed gas enters the S-shaped channel. Filter meshes are provided at the air outlet holes of the S-shaped channel to filter non-gaseous impurities in the methane gas.

[0030] Further, the reaction liquid recovery device includes a recovery tank 13 and a liquid pumping unit 6. The liquid pumping unit 6 is respectively connected and communicated with the liquid outlet of the waste liquid recovery tank 5 and the liquid inlet of the recovery tank 13 through pipelines.

[0031] In the present utility model, the liquid pumping unit 6 is a supercharger for transporting liquids, which pumps the absorbent composition in the waste liquid recovery tank 5 into the recovery tank 13 for storage. The recovery tank 13 is beneficial for realizing the recycling of the absorbent composition.

[0032] In addition, the methane gas recovery system of the present utility model can be placed on a movable device, such as a trolley, etc., and the methane gas recovery system is driven by the movable device to move to any methane gas leakage point, so as to expand the application scope and scenarios of the methane gas recovery system.

[0033] In the case of no conflict, the above-mentioned embodiments and the features in the embodiments in this article can be combined with each other.

[0034] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A methane gas recovery system, characterized in that: The methane gas recovery system is placed on a movable device, and the methane gas recovery system includes a recovery tank, a gas absorption device and a reaction liquid recovery device. The recovery tank is filled with an absorbent composition for adsorbing methane gas. The gas absorption device is connected to the liquid inlet of the recovery tank, and the gas absorption device is used to absorb methane gas and transport it to the recovery tank. The reaction liquid recovery device is connected to the liquid outlet of the recovery tank, and the reaction liquid recovery device is used to store the absorbent composition in the recovery tank.

2. A methane gas recovery system according to claim 1, characterized in that: A reaction tank and a waste liquid recovery tank are provided inside the recovery tank, the absorbent composition is contained in the reaction tank, the reaction tank has a liquid inlet, the gas absorption device is connected to the liquid inlet of the reaction tank, the waste liquid recovery tank has a liquid outlet, the reaction liquid recovery device is connected to the liquid outlet of the waste liquid recovery tank, a liquid conveying component is provided on the reaction tank, the liquid conveying component is used to convey the absorbent composition in the reaction tank to the waste liquid recovery tank, an exhaust port is provided on the top of the recovery tank, a liquid level detection unit and a pH detection unit are provided on the recovery tank, a detection end of the liquid level detection unit is located in the reaction tank, and is used to detect the liquid level height in the reaction tank, and a detection end of the pH detection unit is located in the waste liquid recovery tank, and is used to detect the pH value of the liquid in the waste liquid recovery tank.

3. A methane gas recovery system according to claim 2, characterized in that: The reaction tank and the waste liquid recovery tank are both open-top structures, and the height of the waste liquid recovery tank is lower than that of the reaction tank. The liquid delivery assembly includes a paddle and a linear delivery unit. The linear delivery unit is arranged at the upper end of the reaction tank, and its delivery direction is arranged in the direction of the waste liquid recovery tank. The paddle is a strip structure, which is arranged along a direction perpendicular to the delivery direction of the linear delivery unit and is fixedly connected to the linear delivery unit. The linear delivery unit drives the paddle to move in the direction of the waste liquid recovery tank.

4. A methane gas recovery system according to claim 2, characterized in that: The gas absorption device includes a cover body, an air compressor and a buffer tank which are connected in sequence. The cover body is connected to the air compressor through a bellows. An S-shaped channel is provided at the bottom of the reaction pool. A plurality of air outlet holes are evenly distributed on the S-shaped channel. The air outlet end of the buffer tank is connected and communicated with the S-shaped channel through a pipeline.

5. A methane gas recovery system according to claim 4, characterized in that: A filter screen is arranged on the air outlet of the S-shaped channel.

6. A methane gas recovery system according to claim 2, characterized in that: The reaction liquid recovery device comprises a recovery box and a liquid pump unit, and the liquid pump unit is connected and communicated with the liquid outlet of the waste liquid recovery tank and the liquid inlet of the recovery box through pipelines.

7. A methane gas recovery system according to claim 3, characterized in that: The paddles are provided with four.

Images