CN216024022U

CN216024022U - Water washing methane purifying and pressurizing water washing device

Info

Publication number: CN216024022U
Application number: CN202122305043.9U
Authority: CN
Inventors: 张培全
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-15
Anticipated expiration: 2031-09-23

Abstract

The utility model belongs to the technical field of biogas purification and purification, and discloses a water washing biogas purification pressurized water washing device, which comprises a water washing tower and a waste gas treatment device, wherein the water washing tower comprises a shell, a water pipe and a positioning cover are wound on the outer wall of the shell, the positioning cover is covered outside the water pipe, heat insulation cotton is bonded on the inner wall of the positioning cover, the waste gas treatment device comprises a dehumidification box and an absorption box, the water pipe is wound on the outer wall of the water washing tower, the positioning cover is covered along the outer part of the water pipe to play a fixing role on the water pipe, the heat insulation cotton covered outside the water pipe is arranged on the inner wall of the positioning cover, when the ambient temperature outside the tower is extremely low, hot water is continuously introduced into the water pipe by using a water heater, and then flows into the water heater to heat the water washing tower, so that the water in the tower, the exhaust and drainage pipelines can be effectively prevented from being frozen, the normal operation of the methane washing work is ensured, and the purification progress is guaranteed.

Description

Water washing methane purifying and pressurizing water washing device

Technical Field

The utility model belongs to the technical field of biogas purification and purification, and particularly relates to a water washing biogas purification pressurized water washing device.

Background

The biogas contains methane, carbon dioxide and a small amount of hydrogen sulfide, and can become high-quality CH with high methane content and heat value and impurity gas component quality meeting the natural gas standard requirement after purification₄The pressurized water washing utilizes the difference of the solubility of methane and carbon dioxide in water, the carbon dioxide is absorbed by water in the pressurized water washing device under certain operation conditions, and the methane is purified, however, the existing methane pressurized water washing device still has defects when in use, when the temperature of the environment outside the tower is extremely low, the phenomena of freezing of water, drainage and liquid discharge pipelines in the tower easily occur, the pressurized water washing of the methane cannot be normally carried out, the methane purification progress is influenced, and when the pressure of the water washing tower is relieved, a large amount of waste gas containing impurity gas is directly discharged into the air, and the hydrogen sulfide in the steam can cause harm to the human health.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water-washing biogas purification pressurized water washing device, which solves the problems that when the existing biogas pressurized water washing device is used in an extremely low temperature environment, water in a water washing tower and exhaust and liquid discharge pipelines are easy to freeze, when the water washing tower is decompressed, waste gas is directly discharged into the air, and hydrogen sulfide can cause harm to human health.

In order to achieve the purpose, the utility model provides the following technical scheme: washing marsh gas purifies pressurization washing device, including the washing tower, the washing tower includes the casing, the winding has raceway and position cover on the outer wall of casing, the outside of raceway is located to the position cover, and bonds on the inner wall of position cover and have the heat preservation cotton.

Preferably, still include exhaust-gas treatment device, be connected with forcing pipe and pressure release pipe on the casing, exhaust-gas treatment device includes dehumidification case and absorption box, be connected with the gas-supply pipe between dehumidification case and the absorption box, be connected with the drain pipe on the dehumidification case, be connected with the outlet duct on the absorption box, the one end of pressure release pipe is connected to the dehumidification incasement, the inside of dehumidification case is provided with the sponge that absorbs water and is located the push pedal at the sponge top that absorbs water, the push pedal can reciprocate, and has seted up the exhaust hole in the push pedal.

Preferably, the water heater further comprises a water heater, a first water pump and a second water pump, wherein the water outlet end of the first water pump and the water inlet end of the second water pump are connected with the inside of the water heater through connecting pipes, and two ends of the water conveying pipe are respectively connected with the water inlet end of the first water pump and the water outlet end of the second water pump.

Preferably, still include electric putter, electric putter's expansion end is up to be connected with the connecting plate, be connected with the connecting rod between push pedal and the connecting plate, and the top of dehumidification case is run through in the connecting rod activity.

Preferably, the top of the dehumidification box is provided with a through hole, the inner wall of the through hole is bonded with a sealing ring, the connecting rod movably penetrates through the through hole, and the outer wall of the connecting rod is in close contact with the inner wall of the sealing ring.

Preferably, the pressure relief pipe is provided with a one-way valve, and the drain pipe is provided with an electromagnetic valve.

Compared with the prior art, the utility model has the following beneficial effects:

(1) according to the utility model, the water pipe is wound on the outer wall of the washing tower, the positioning cover is covered along the outside of the water pipe, so that the water pipe is fixed, the heat insulation cotton covered outside the water pipe is arranged on the inner wall of the positioning cover, when the ambient temperature outside the tower is extremely low, hot water is continuously introduced into the water pipe by using the water heater, and then flows into the water heater to heat the washing tower, so that the water in the tower and the exhaust and drainage pipelines can be effectively prevented from being frozen, the normal operation of methane washing is ensured, and the purification progress is ensured.

(2) According to the utility model, by arranging the waste gas treatment device, the waste gas discharged when the pressure of the washing tower is released firstly passes through the dehumidification box, is dehumidified by the water absorption sponge and then is introduced into the absorption box containing the sodium hydroxide solution, so that the solution can be prevented from being diluted by the moisture in the waste gas, the hydrogen sulfide gas in the waste gas can be removed by the solution, and the harm to the health of a human body by the hydrogen sulfide in the waste gas is prevented.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an external view of a water washing tower according to the present invention;

FIG. 4 is a schematic structural view of an exhaust gas treatment device according to the present invention;

in the figure: 1. a water heater; 2. a water delivery pipe; 3. washing the tower with water; 4. a pressure relief pipe; 5. an exhaust gas treatment device; 6. a dehumidification box; 7. an absorption tank; 8. a first water pump; 9. a second water pump; 10. a positioning cover; 11. heat preservation cotton; 12. a drain pipe; 13. a water-absorbing sponge; 14. pushing the plate; 15. an electric push rod; 16. a connecting plate; 17. a connecting rod; 18. a gas delivery pipe; 19. and an air outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: a washing biogas purification pressurized washing device comprises a washing tower 3, wherein the washing tower 3 comprises a shell, the bottom of the shell is connected with a liquid discharge pipe, the side wall of the bottom end of the shell is connected with an air inlet pipe, the top of the shell is connected with an exhaust pipe, a silk screen demister, a liquid distributor and a packing layer are sequentially installed in the shell from top to bottom, the packing in the packing layer adopts a ceramic step ring, one side of the shell is provided with a third water pump, a water inlet pipe is connected between the water outlet end of the third water pump and the liquid distributor, the water inlet end of the third water pump is connected with a pipeline communicated with clean water, the clean water is uniformly sprayed out from the silk screen demister, the clean water flows downwards from the upper end in the washing tower 3, biogas is introduced from the bottom end of the washing tower 3 through the air inlet pipe and flows upwards, the biogas flows in the reverse direction to the clean water, the clean water fully absorbs carbon dioxide, the biogas is effectively purified, and the purified biogas is discharged from the exhaust pipe and collected, the winding has raceway 2 and position cover 10 on the outer wall of casing, position cover 10 covers the outside of locating raceway 2, be used for fixed raceway 2, and it has heat preservation cotton 11 to bond on the inner wall of position cover 10, heat preservation cotton 11 is used for keeping warm raceway 2, when the outside ambient temperature of tower is extremely low, constantly let in hot water in raceway 2, can heat washing tower 3, can effectively prevent tower water and exhaust, drainage tube takes place to freeze, the normal clear of marsh gas washing work has been guaranteed, the guarantee purification progress.

Further, the waste gas treatment device comprises a waste gas treatment device 5, a pressure gauge is further arranged in the shell and used for monitoring the gas pressure in the tower, a pressure pipe and a pressure relief pipe 4 are connected to the shell, the pressure can be applied to the interior of the washing tower 3 through the pressure pipe, the pressure relief pipe 4 can relieve the pressure of the interior of the washing tower 3, the waste gas treatment device 5 comprises a dehumidification box 6 and an absorption box 7, a cover body is arranged at the top of the absorption box 7, a sodium hydroxide solution is arranged in the absorption box 7, a gas pipe 18 is connected between the dehumidification box 6 and the absorption box 7, a drain pipe 12 is connected to the dehumidification box 6, an air outlet pipe 19 is connected to the absorption box 7, one end of the pressure relief pipe 4 is connected to the interior of the dehumidification box 6, a water absorption sponge 13 and a push plate 14 positioned at the top of the water absorption sponge 13 are arranged in the dehumidification box 6, the push plate 14 can move up and down, an exhaust hole is formed in the push plate 14, waste gas discharged when the washing tower 3 is relieved, after the water absorption sponge 13 is dehumidified, the gas pipe 18 is introduced into the bottom end of the absorption box 7, hydrogen sulfide gas in waste gas reacts with sodium hydroxide solution, the reacted gas is discharged into the air through the exhaust pipe 19, harm to human health caused by direct discharge of pressure release waste gas containing hydrogen sulfide into the air can be avoided, and after the pressure release work is completed, the push plate 14 is made to move downwards to extrude the water absorption sponge 13, so that the water in the water absorption sponge 13 is extruded from the drain pipe 12, and the subsequent water absorption performance of the water absorption sponge is guaranteed.

Furthermore, the water heater also comprises a water heater 1, a first water pump 8 and a second water pump 9, wherein the water outlet end of the first water pump 8 and the water inlet end of the second water pump 9 are connected with the inside of the water heater 1 respectively, two ends of the water pipe 2 are connected with the water inlet end of the first water pump 8 and the water outlet end of the second water pump 9 respectively, the water heater 1 adopts a solar water heater, heated water is filled in the water pipe, the second water pump 9 pumps hot water into the water pipe 2, and the hot water flows back into the water heater 1 through the first water pump 8 to realize circulating water heating.

Concretely, still include electric putter 15, electric putter 15's expansion end up, and be connected with connecting plate 16, be connected with connecting rod 17 between push pedal 14 and the connecting plate 16, and connecting rod 17 activity runs through the top of dehumidification case 6, electric putter 15 is used for reciprocating of control push pedal 14, dehumidification case 6 normal during operation, electric putter 15 is in the open mode, its expansion end is released, push pedal 14 does not lead to the fact the extrusion to the sponge 13 that absorbs water, one side of washing tower 3 is provided with the support frame, dehumidification case 6, absorption box 7 and electric putter 15 are all installed on the support frame.

It is worth to say that the top of the dehumidifying box 6 is provided with a through hole, the inner wall of the through hole is bonded with a sealing ring, the connecting rod 17 movably penetrates through the through hole, the outer wall of the connecting rod 17 is in close contact with the inner wall of the sealing ring, and when the connecting rod 17 moves up and down, the through hole is always kept in a sealing state, so that the dehumidified gas can flow out of the dehumidifying box 6 from the gas conveying pipe 18.

Furthermore, install the check valve on the pressure release pipe 4, install the solenoid valve on the drain pipe 12, when 3 pressure release of washing tower, the solenoid valve is closed, and after the pressure release was accomplished, when push pedal 14 extrusion sponge 13 that absorbs water, the solenoid valve was opened, and the water of extruding does not flow back to in the drain pipe 12, flows out from drain pipe 12.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Washing marsh gas purifies pressurization washing device, its characterized in that: including washing tower (3), washing tower (3) include the casing, the winding has raceway (2) and location cover (10) on the outer wall of casing, the outside of raceway (2) is located in location cover (10) cover, and bonds on the inner wall of location cover (10) and have heat preservation cotton (11).

2. The water-washed biogas purification pressurized water washing device as claimed in claim 1, characterized in that: still include exhaust-gas treatment device (5), be connected with forcing pipe and pressure release pipe (4) on the casing, exhaust-gas treatment device (5) are including dehumidification case (6) and absorption box (7), be connected with gas-supply pipe (18) between dehumidification case (6) and absorption box (7), be connected with drain pipe (12) on dehumidification case (6), be connected with outlet duct (19) on absorption box (7), the one end of pressure release pipe (4) is connected to in dehumidification case (6), the inside of dehumidification case (6) is provided with sponge (13) and the push pedal (14) that are located sponge (13) top of absorbing water, push pedal (14) can reciprocate, and has seted up the exhaust hole on push pedal (14).

3. The water-washed biogas purification pressurized water washing device as claimed in claim 2, characterized in that: the water heater is characterized by further comprising a water heater (1), a first water pump (8) and a second water pump (9), wherein the water outlet end of the first water pump (8) and the water inlet end of the second water pump (9) are connected with a connecting pipe respectively, and the two ends of the water conveying pipe (2) are connected with the water inlet end of the first water pump (8) and the water outlet end of the second water pump (9) respectively.

4. A water-washed biogas purification pressurized water washing apparatus according to claim 3, characterized in that: still include electric putter (15), electric putter (15)'s expansion end is up to be connected with connecting plate (16), be connected with connecting rod (17) between push pedal (14) and connecting plate (16), and the top of dehumidification case (6) is run through in connecting rod (17) activity.

5. The water-washed biogas purification pressurized water washing device as claimed in claim 4, characterized in that: the through-hole has been seted up at the top of dehumidification case (6), and bonds on the inner wall of through-hole and have the sealing ring, connecting rod (17) activity runs through the through-hole, and the outer wall of connecting rod (17) and the inner wall in close contact with of sealing ring.

6. The water-washed biogas purification pressurized water washing device as claimed in claim 5, characterized in that: the pressure relief pipe (4) is provided with a one-way valve, and the drain pipe (12) is provided with an electromagnetic valve.