A pressure-resistant and corrosion-resistant biogas purification device

Abstract

The present application discloses a pressure-resistant and corrosion-resistant biogas purification device, comprising a box body, a filter frame, a water pump and a drain outlet. A purification bin is provided on the left side of the box body, and a clean water bin is provided on the right side of the box body. A gas boosting device is fixedly installed below the left side wall of the box body, and the gas boosting device is movably connected and communicated with one end of an air inlet pipe. The other end of the air inlet pipe passes through the left side wall of the box body and is located below the interior of the purification bin. A filter frame is fixedly installed on the upper inner side of the purification bin, and shock absorbers are fixedly installed at the four bottom corners of the filter screen. A support plate is fixedly connected to the bottom of the shock absorber. A water pump is fixedly installed on the inner bottom of the clean water bin, and the top of the water pump is movably connected and communicated with a water pumping pipe, and the other end of the water pumping pipe passes through the partition between the purification bin and the clean water bin and is located above the filter frame. The present application flushes the purification bin by arranging a water pumping pipe, thereby reducing the corrosion of the equipment by residues and improving the service life of the device.

Description

Technical Field

[0001] The present application relates to the technical field of biogas purification, and in particular to a biogas purification device that is pressure-resistant and corrosion-resistant. Background Art

[0002] Biogas is a mixed gas, the main component of which is methane, in addition to a small amount of carbon dioxide, hydrogen sulfide, nitrogen and some other components. Since the content of methane in biogas accounts for a large proportion (usually more than 60%), the density of biogas is smaller than that of air. The heat energy generated by the combustion of biogas can be used for heating, water heating, industrial drying processes and other purposes. In rural areas, biogas can be used for household cooking or lighting after purification, which helps to replace traditional fuels such as charcoal and coal, reduce indoor air pollution and forest resource consumption, but it needs to be purified before use, mainly to remove impurities in biogas and make it In order to produce high-quality methane with high methane content, calorific value and impurity gas component quality that meet the requirements of natural gas standards, the existing purification method mainly adopts the absorption method, which utilizes the physical and chemical absorption characteristics of organic amine solutions (such as primary amines, secondary amines, tertiary amines, sterically hindered amines, etc.) and carbon dioxide to achieve purification. Under pressurized and normal temperature conditions in the absorption tower, these solutions absorb the carbon dioxide in the biogas to decarbonize and purify the methane. However, due to the long-term flushing of the interior of the purification equipment by methane and the absorption liquid, it will cause corrosion on the inner surface, affecting the service life of the equipment. Over time, it will also affect the purification effect and cause unnecessary losses. Utility Model Content

[0003] The purpose of the present application is to provide a pressure-resistant and corrosion-resistant biogas purification device, which solves the problem raised in the background technology that methane and absorption liquid flush the interior of the purification device for a long time, causing internal surface corrosion, affecting the service life of the equipment, and affecting the purification effect over time.

[0004] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a pressure-resistant and corrosion-resistant biogas purification equipment, comprising a box body, a filter frame, a water pump and a drain outlet, a purification bin is opened on the left side of the box body, a clean water bin is opened on the right side of the box body, a gas boosting device is fixedly installed below the left side wall of the box body, the gas boosting device is movably connected and communicated with one end of an air intake pipe, the other end of the air intake pipe passes through the left side wall of the box body and is located below the interior of the purification bin, a filter frame is fixedly installed on the upper inner side of the purification bin, shock absorbers are fixedly installed at the four corners of the bottom of the filter screen, a support plate is fixedly connected to the bottom of the shock absorber, a water pump is fixedly installed on the inner bottom of the clean water bin, the top of the water pump is movably connected and communicated with a water pumping pipe, and the other end of the water pumping pipe passes through the partition between the purification bin and the clean water bin and is located above the filter frame.

[0005] In this technical solution, after being pressurized by the gas booster, the biogas enters the purification chamber inside the box body, and the absorption liquid is added from the liquid inlet to make it accumulate at the bottom of the purification chamber. After the biogas is discharged from the air inlet pipe, it is fully in contact with the absorption liquid, and the carbon dioxide in it will be absorbed by the absorption liquid, while the biogas rises normally and is further purified when passing through the filter screen, and then discharged from the air outlet to complete the purification. The inside of the purification chamber can be flushed through the clean water chamber, the pumping pipe and the nozzle, and clean water is added to the clean water chamber from the water inlet, and then the process is started. The water pump draws clean water along the water pump pipe and sprays it from the nozzle to flush the purification chamber, thereby flushing away residual liquid, avoiding corrosion to the inside of the box body and increasing the service life of the device. At the same time, the filter frame, shock absorber and support plate can prevent the gas impact force from being too large. When the biogas moves upward, it pushes the support plate to move upward. Under the squeezing action of the shock absorber, the absorbent cotton contacts the filter screen. The absorbent cotton buffers the gas while retaining the water vapor, preventing the filter screen from falling off due to excessive gas impact force, thereby improving the practicability of the device.

[0006] As an optional solution of the technical solution of the present application, absorbent cotton is movably installed on the surface of the support plate.

[0007] As an optional solution of the technical solution of the present application, the branch of the water pumping pipe passes through the partitions of the purification bin and the clean water bin and is located below the support plate. The surface of one end of the water pumping pipe located inside the purification bin is evenly distributed with a number of nozzles.

[0008] As an optional solution of the technical solution of the present application, an air outlet is provided at the top of the box body above the purification bin.

[0009] As an optional solution of the technical solution of the present application, a water outlet is provided at the bottom of the purification bin, and a drainage pipe is provided at the bottom of the box below the water outlet.

[0010] As an optional solution of the technical solution of the present application, a liquid inlet is opened through the middle section of the left side wall of the box body.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This application is further purified when passing through the filter net, and then discharged from the air outlet to complete the purification. The inside of the purification bin can be flushed through the clean water bin, the pumping pipe and the nozzle. Clean water is added to the clean water bin from the water inlet, and then the pump is started to draw the clean water along the pumping pipe and sprayed from the nozzle to flush the purification bin, thereby flushing away the residual liquid, etc., avoiding corrosion to the inside of the box body and increasing the service life of the device.

[0013] 2. The present application can prevent excessive gas impact force through the filter frame, shock absorber and support plate. When the biogas moves upward, it pushes the support plate upward. Under the squeezing action of the shock absorber, the absorbent cotton contacts the filter net. The absorbent cotton buffers the gas while retaining the water vapor, preventing the filter net from falling off due to excessive gas impact force, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 An overall view of a pressure-resistant and corrosion-resistant biogas purification device for this application;

[0016] Figure 2 This is a schematic front cross-sectional view of a pressure-resistant and corrosion-resistant biogas purification device of the present application;

[0017] Figure 3 This is a side cross-sectional schematic diagram of a pressure-resistant and corrosion-resistant biogas purification device according to the present application.

[0018] In the figure: 1. Box body; 2. Gas boosting equipment; 3. Air inlet pipe; 4. Purification chamber; 5. Clean water chamber; 6. Water inlet; 7. Water pump; 8. Water pump pipe; 9. Nozzle; 10. Air outlet; 11. Water outlet; 12. Liquid inlet; 13. Drain pipe; 14. Filter frame; 15. Filter net; 16. Shock absorber; 17. Support plate; 18. Water-absorbing cotton. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, they are further explained below in conjunction with specific implementation methods.

[0020] like Figure 1 As shown, a pressure-resistant and corrosion-resistant biogas purification device includes a box body 1, a filter frame 14, a water pump 7 and a drain 11. A gas boosting device 2 is fixedly installed below the left side wall of the box body 1, and an air outlet 10 is opened at the top of the box body 1 above the purification bin 4.

[0021] like Figure 2 As shown, a purification bin 4 is opened on the left side of the interior of the box body 1, and a clean water bin 5 is opened on the right side of the interior of the box body 1. The gas boosting device 2 is movably connected and communicated with one end of the air intake pipe 3, and the other end of the air intake pipe 3 passes through the left side wall of the box body 1 and is located at the lower part of the purification bin 4.

[0022] like Figure 2As shown, a water pump 7 is fixedly installed on the inner bottom of the clean water tank 5, and the top of the water pump 7 is movably connected and communicated with a water pump 8, and the other end of the water pump 8 passes through the partition between the purification tank 4 and the clean water tank 5 and is located above the filter frame 14, and the branch of the water pump 8 passes through the partition between the purification tank 4 and the clean water tank 5 and is located below the support plate 17. A plurality of nozzles 9 are evenly distributed on the surface of one end of the water pump 8 located inside the purification tank 4, and the nozzles 9 can flush the purification tank 4 and wash away the residue, thereby reducing corrosion and increasing the life of the equipment.

[0023] like Figure 2 As shown, a drain port 11 is provided at the bottom of the purification bin 4, a drain pipe 13 is provided at the bottom of the box body 1 below the drain port 11, and a liquid inlet 12 is provided through the middle section of the left side wall of the box body 1. The drain pipe 13 can be used to discharge the absorption liquid and flushing water.

[0024] like Figure 3 As shown, a filter frame 14 is fixedly installed on the upper inner side of the purification bin 4, shock absorbers 16 are fixedly installed at the four bottom corners of the filter screen 15, and a support plate 17 is fixedly connected to the bottom of the shock absorber 16. The filter screen 15 is detachably installed on the inner side of the filter frame 14, and absorbent cotton 18 is movably installed on the surface of the support plate 17. Holes are provided on the surface of the support plate 17 to facilitate the passage of gas. The absorbent cotton 18 can absorb moisture in the biogas and can buffer the filter screen 15 to prevent the filter screen 15 from being damaged or falling off due to excessive impact force of the gas.

[0025] In actual use, the biogas enters the purification bin 4 inside the box body 1 after being pressurized by the gas boosting device 2, and the absorption liquid is added from the liquid inlet 12 to make it accumulate at the bottom of the purification bin 4. After the biogas is discharged from the air inlet pipe 3, it is fully in contact with the absorption liquid, and the carbon dioxide therein will be absorbed by the absorption liquid, while the biogas rises normally, and is further purified when passing through the filter screen 15, and then discharged from the air outlet 10 to complete the purification. The inside of the purification bin 4 can be flushed through the clean water bin 5, the water pumping pipe 8 and the nozzle 9, and clean water is added to the clean water bin 5 from the water inlet 6, and then the water pump 7 is started. , clean water is pumped out along the pumping pipe 8 and sprayed out from the nozzle 9 to rinse the purification bin 4, thereby washing away the residual liquid, etc., avoiding corrosion to the inner side of the box body 1, and improving the service life of the device. At the same time, the filter frame 14, the shock absorber 16 and the support plate 17 can prevent the gas impact force from being too large. When the biogas moves upward, the support plate 17 is pushed upward. Under the squeezing action of the shock absorber 16, the absorbent cotton 18 contacts the filter screen 15. The absorbent cotton 18 buffers the gas while the water vapor, preventing the filter screen 15 from falling off due to excessive gas impact force, thereby improving the practicability of the device.

Claims

1. A pressure-resistant and corrosion-resistant biogas purification device, comprising a housing (1), a filter frame (14), a water pump (7) and a water outlet (11), characterized in that: A purification bin (4) is provided on the left side of the interior of the box (1), and a clean water bin (5) is provided on the right side of the interior of the box (1). A gas boosting device (2) is fixedly installed below the left side wall of the box (1), and the gas boosting device (2) is movably connected and communicated with one end of the air intake pipe (3). The other end of the air intake pipe (3) passes through the left side wall of the box (1) and is located below the interior of the purification bin (4). A filter frame (14) is fixedly installed on the upper inner side of the purification bin (4), and a filter screen (15) is detachably installed on the inner side of the filter frame (14). Shock absorbers (16) are fixedly installed at the four corners of the bottom of the filter screen (15). The bottom of the device (16) is fixedly connected to a support plate (17), the inner bottom of the clean water tank (5) is fixedly installed with a water pump (7), the top of the water pump (7) is movably connected and communicated with a water pump (8), and the other end of the water pump (8) passes through the partition between the purification tank (4) and the clean water tank (5) and is located above the filter frame (14), the surface of the support plate (17) is movably installed with absorbent cotton (18), the branch of the water pump (8) passes through the partition between the purification tank (4) and the clean water tank (5) and is located below the support plate (17), and a plurality of nozzles (9) are evenly distributed on the surface of one end of the water pump (8) located inside the purification tank (4).

2. The pressure-resistant and corrosion-resistant biogas purification equipment according to claim 1, characterized in that: An air outlet (10) is provided at the top of the box body (1) above the purification bin (4).

3. The pressure-resistant and corrosion-resistant biogas purification equipment according to claim 1, characterized in that: A water outlet (11) is provided at the bottom of the purification bin (4), and a drainage pipe (13) is provided at the bottom of the box body (1) below the water outlet (11).

4. The pressure-resistant and corrosion-resistant biogas purification equipment according to claim 1, characterized in that: A liquid inlet (12) is provided through the middle section of the left side wall of the box body (1).

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