CN214612337U

CN214612337U - Marsh gas pressurization washing device

Info

Publication number: CN214612337U
Application number: CN202120314386.9U
Authority: CN
Inventors: 甘海南; 段明秀; 唐宇彤; 张广兰; 顾业明; 张彦凯; 梁玥
Original assignee: Zhengzhou New Crown Energy Development Co ltd
Current assignee: Zhengzhou New Crown Energy Development Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-11-05
Anticipated expiration: 2031-02-03

Abstract

The utility model relates to a marsh gas pressurization washing device, including the washing jar, be equipped with marsh gas intake pipe on the washing jar, washing jar inboard below is equipped with the washing pond, the inlet connection marsh gas generating device of marsh gas intake pipe, the inlet end of marsh gas intake pipe deepens to washing pond bottom, washing jar top is equipped with first outlet duct and second outlet duct, the inlet end of first outlet duct and second outlet duct all deepens to washing pond top, be equipped with first molecular sieve and vacuum pump on the first outlet duct, the vacuum pump is located one side that first molecular sieve kept away from the washing jar, first outlet duct is normally closed state, the second outlet duct is normally open state; the utility model relates to a marsh gas pressurization washing device, which has the advantages of good purifying effect, high purifying efficiency and good environmental protection effect.

Description

Marsh gas pressurization washing device

Technical Field

The utility model relates to a marsh gas purifies technical field, especially relates to a marsh gas pressurization washing device.

Background

The main impurities in the biogas are carbon dioxide and hydrogen sulfide, the biogas purification treatment method mainly comprises a pressure swing adsorption method, a chemical adsorption method and a pressurized water washing method, the most common treatment method at present is the pressurized water washing method, the equipment is simple, the investment cost is low, but when the pressurized water washing method discharges impurity gas every time, the impurity gas is discharged into the atmosphere along with a small amount of methane to cause pollution, or the purity of the biogas is reduced after the impurity gas is collected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a biogas pressurizing and washing device, which is used for solving the problems that the prior biogas pollutes the atmosphere and the purity is reduced in the pressurizing and washing process.

The utility model discloses a realize through following technical scheme: the utility model provides a marsh gas pressurization washing device, includes the washing jar, be equipped with the marsh gas intake pipe on the washing jar, washing jar inboard below is equipped with the washing pond, the inlet connection marsh gas generating device of marsh gas intake pipe, the entrance point of marsh gas intake pipe is deepened to washing bottom of the pool portion, washing tank deck portion is equipped with first outlet duct and second outlet duct, the entrance point of first outlet duct and second outlet duct all deepens the washing pond top, be equipped with first molecular sieve and vacuum pump on the first outlet duct, the vacuum pump is located one side that washing jar was kept away from to first molecular sieve, first outlet duct is the normally closed state, the second outlet duct is the normally open state.

Furthermore, the outlet ends of the first air outlet pipe and the second air outlet pipe are respectively communicated with a three-way valve.

Furthermore, a pressure gauge is arranged on the water washing tank, and a probe of the pressure gauge extends into the upper part of the water washing tank.

Furthermore, a sampling tube is arranged on the water washing tank, and the inlet end of the sampling tube extends into the upper part of the water washing pool.

Furthermore, a second molecular sieve is arranged in the water washing tank and is positioned between the first air outlet pipe and the water washing pool.

Furthermore, a marsh gas equipartition device is arranged at the outlet end of the marsh gas inlet pipe and comprises a plurality of equipartition pipes, the plurality of equipartition pipes are radially and evenly distributed by taking the marsh gas inlet pipe as the circle center, and equipartition holes are evenly formed in the equipartition pipes.

The beneficial effects of the utility model reside in that: the utility model relates to a marsh gas pressurization washing device, through setting up first outlet duct and second outlet duct, the entrance point of first outlet duct and second outlet duct all deepens to the washing pond top, be equipped with first molecular sieve and vacuum pump on the first outlet duct, the vacuum pump is located the one side that first molecular sieve kept away from the washing jar, first outlet duct is normal closed state, the second outlet duct is normal open state, when this device normally purifies the operation, the marsh gas that purifies discharges through the second outlet duct, when this device needs the carbon dioxide of clearing up dissolving in the washing pond, hydrogen sulfide impurity, close the second outlet duct, open first outlet duct, through the vacuum pump evacuation in the washing jar, carbon dioxide, hydrogen sulfide gas precipitate, get into first outlet duct jointly with the methane gas that remains above the washing pond, the second molecular sieve adsorbs carbon dioxide, hydrogen sulfide impurity, the mixed gas after filtering uses methane to collect as the principal ingredients, promotes this device's purifying effect.

Drawings

FIG. 1 is a schematic view of the entire structure of embodiment 1;

fig. 2 is a schematic structural view of the biogas homogenizer in embodiment 1.

Wherein: 1. a water washing tank; 2. a marsh gas equipartition device; 3. a methane inlet pipe; 4. a first molecular sieve; 5. a vacuum pump; 6. a first air outlet pipe; 7. a second air outlet pipe; 8. a sampling tube; 9. a water washing pool; 10. a pressure gauge; 11. a three-way valve; 12. a second molecular sieve; 13. evenly dividing the pipes; 14. and (4) uniformly distributing the holes.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-2, a marsh gas pressurizing and washing device comprises a washing tank 1, wherein the washing tank 1 is a sealed stainless steel tank, a marsh gas inlet pipe 3 is arranged on the washing tank 1, a washing tank 9 is arranged below the inner side of the washing tank 1, washing liquid is filled in the washing tank 9 and is used for dissolving carbon dioxide and hydrogen sulfide, the inlet end of the marsh gas inlet pipe 3 is connected with a marsh gas generating device, marsh gas is provided for the washing tank 1 through the marsh gas generating device and improves the air pressure in the washing tank 1, the inlet end of the marsh gas inlet pipe 3 extends to the bottom of the washing tank 9, a marsh gas equipartition device 2 is arranged at the outlet end of the marsh gas inlet pipe 3, the marsh gas equipartition device 2 is tiled at the bottom of the washing tank 9, the marsh gas equipartition device 2 comprises a plurality of equipartition pipes 13, the equipartition pipes 13 are all communicated with the marsh gas inlet pipe 3, the plurality of equipartition pipes 13 are radially and uniformly distributed around the marsh gas inlet pipe 3, the equalizing pipe 13 is uniformly provided with equalizing holes 14, so that the marsh gas can uniformly enter the washing liquid after coming out of the marsh gas inlet pipe 3, and the washing efficiency is improved;

a first air outlet pipe 6 and a second air outlet pipe 7 are installed at the top of the washing tank 1, inlet ends of the first air outlet pipe 6 and the second air outlet pipe 7 extend into the upper portion of the washing tank 9, a second molecular sieve 12 is installed in the washing tank 1, the second molecular sieve 12 is located between the first air outlet pipe 6 and the washing tank 9, the second molecular sieve is a 3A molecular sieve and used for adsorbing water vapor in methane gas after water washing, a first molecular sieve 4 and a vacuum pump 5 are installed on the first air outlet pipe 6, the first molecular sieve 4 is a 4A molecular sieve, the vacuum pump 5 is located on one side, away from the washing tank 1, of the first molecular sieve 4, the entering amount of carbon dioxide, hydrogen sulfide and water vapor in the vacuum pump 5 is reduced, therefore corrosion to the vacuum pump 5 is reduced, and durability of the vacuum pump 5 is improved;

the first gas outlet pipe 6 is in a normally closed state, the second gas outlet pipe 7 is in a normally open state, when the device is in normal purification operation, purified methane is discharged through the second gas outlet pipe, when the device needs to clean carbon dioxide and hydrogen sulfide impurities dissolved in the washing tank, the second gas outlet pipe 7 is closed, the first gas outlet pipe is opened, the vacuum pump 5 is used for vacuumizing the washing tank, carbon dioxide and hydrogen sulfide gas are separated out and enter the first gas outlet pipe 6 together with methane gas remained above the washing tank, the second molecular sieve 4 adsorbs the carbon dioxide and the hydrogen sulfide impurities, the filtered mixed gas is collected by taking methane as a main component, the purification effect of the device is improved, the outlet ends of the first gas outlet pipe 6 and the second gas outlet pipe 7 are respectively communicated with the three-way valve 11, and the outlet end of the three-way valve 11 is communicated with the next process;

the water washing tank 1 is provided with the sampling tube 8, the inlet end of the sampling tube 8 extends into the position above the water washing tank 9, so that the purity of the methane which is washed by water can be conveniently extracted and detected, the water washing tank 1 is provided with the pressure gauge 10, and the probe of the pressure gauge 10 extends into the position above the water washing tank 9. The air pressure in the washing tank 1 can be monitored conveniently.

The working principle is as follows: when the device is used, the washing tank 9 is filled with washing liquid, the vacuum pump 5 is started to extract air in the space above the washing tank 9 in the washing tank 1, the vacuum pump 6 and the first air outlet pipe 6 are closed, then the methane generating device feeds methane into the washing tank 9 through the methane inlet pipe 3, the air pressure in the washing tank 1 is restored to normal pressure and then is raised to high pressure, and when the pressure in the washing tank 1 reaches the standard, the second air outlet pipe 7 is opened to discharge the methane filtered by the washing and the second molecular sieve;

when carbon dioxide and hydrogen sulfide dissolved in the washing liquid tend to be saturated and reach a preset upper limit value, the second air outlet pipe 7 is closed, the first air outlet pipe 6 is opened, the vacuum pump 5 is started to perform vacuum operation, the carbon dioxide and hydrogen sulfide gas dissolved in the washing liquid are separated out and enter the first air outlet pipe 6 together with methane gas remained above the washing pool, the second molecular sieve 4 adsorbs carbon dioxide and hydrogen sulfide impurities, and the filtered mixed gas is collected by taking methane as a main component, so that the purification effect of the device is improved, meanwhile, waste gas does not need to be discharged into the atmosphere, and the environment-friendly effect is good;

after the carbon dioxide and hydrogen sulfide gas removal operation is completed, the first gas outlet pipe 6 is closed again, the second gas outlet pipe 7 is opened, and the operation is circulated.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The biogas pressurization water washing device comprises a water washing tank (1) and is characterized in that a biogas inlet pipe (3) is arranged on the water washing tank (1), a water washing pool (9) is arranged below the inner side of the water washing tank (1), the inlet end of the biogas inlet pipe (3) is connected with a biogas generating device, the inlet end of the biogas inlet pipe (3) extends into the bottom of the water washing pool (9), a first outlet pipe (6) and a second outlet pipe (7) are arranged at the top of the water washing tank (1), the inlet ends of the first outlet pipe (6) and the second outlet pipe (7) extend into the upper part of the water washing pool (9), a first molecular sieve (4) and a vacuum pump (5) are arranged on the first outlet pipe (6), the vacuum pump (5) is positioned on one side of the first molecular sieve (4) far away from the water washing tank (1), the first outlet pipe (6) is in a normally closed state, the second air outlet pipe (7) is in a normally open state.

2. The biogas pressurized water washing device as claimed in claim 1, wherein the outlet ends of the first outlet pipe (6) and the second outlet pipe (7) are respectively communicated with a three-way valve (11).

3. The biogas pressurized water washing device as claimed in claim 1, characterized in that the water washing tank (1) is provided with a pressure gauge (10), and a probe of the pressure gauge (10) extends into the upper part of the water washing tank (9).

4. The biogas pressurized water washing device as claimed in claim 1, characterized in that the water washing tank (1) is provided with a sampling tube (8), and the inlet end of the sampling tube (8) extends into the upper part of the water washing tank (9).

5. The biogas pressurized water washing device as claimed in claim 1, characterized in that a second molecular sieve (12) is arranged in the water washing tank (1), and the second molecular sieve (12) is positioned between the first gas outlet pipe (6) and the water washing tank (9).

6. The pressurized methane washing device as claimed in claim 1, wherein the outlet end of the methane inlet pipe (3) is provided with a methane equipartition device (2), the methane equipartition device (2) comprises a plurality of equipartition pipes (13), the plurality of equipartition pipes (13) are radially and evenly distributed around the methane inlet pipe (3), and the equipartition pipes (13) are evenly provided with equipartition holes (14).