CN212741258U

CN212741258U - Device for producing well site purified coal bed gas

Info

Publication number: CN212741258U
Application number: CN202021212045.2U
Authority: CN
Inventors: 武杰; 王江泽; 王美林; 韩作颖; 陈林勇; 刘健
Original assignee: Shanxi Jincheng Anthracite Mining Group Co Ltd
Current assignee: Shanxi Jincheng Anthracite Mining Group Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-03-19
Anticipated expiration: 2030-06-28

Abstract

The utility model provides a device of production well site purification coal bed gas, belongs to coal bed gas and develops and utilize technical field, can solve the problem of the influence of hydrogen sulfide, buggy, moisture to gathering pipeline line that the coal bed gas exploitation in-process produced, including dehydrator and desulfurization dust remover, dehydrator and desulfurization dust remover pass through communicating pipe and connect, and dehydrator upper portion is equipped with the gas vent, and the lower part is equipped with the outlet, and the dehydrator side is equipped with the outlet duct, is equipped with the cooler in the dehydrator, and desulfurization dust remover's upper portion is equipped with the intake pipe, and the lower extreme of intake pipe is equipped with the screen cloth, and desulfurization dust remover's upper portion is equipped with annotates liquid mouth and disapp. The utility model has the advantages of reasonable design, installation convenient to use, the simple operation. The method can be directly used for primary desulfurization, dust removal and dehydration of gas in a coal bed gas production well field. The burden of subsequent desulfurization and dust removal is reduced.

Description

Device for producing well site purified coal bed gas

Technical Field

The utility model belongs to the technical field of the coal bed gas is developed and is utilized, concretely relates to device of coal bed gas is purified in production well site.

Background

The coal bed gas is unconventional natural gas which is generated in the coal bed in the coal-forming process and exists in the coal bed, the main component of the natural gas is methane, the coal bed gas also contains a small amount of hydrogen sulfide, the hydrogen sulfide is a harmful gas and can cause harm to human bodies, and the hydrogen sulfide can corrode a gas transmission pipeline. Coal bed gas is produced from pores in the coal bed, so coal dust in the coal bed can be produced along with the production of the coal bed gas, and especially in the coal bed with serious coal dust discharge and the coal bed with less water production, the coal dust can easily enter a gathering and transporting pipeline along with the production of the coal bed gas, and the problem that the pipeline is blocked by the coal dust accumulation can be caused over time. In addition, the production process of the coal bed gas is drainage and depressurization gas production, so the coal bed gas produced by the gas well necessarily contains moisture, too high moisture can influence the utilization of the coal bed gas in the later period, and the icing in the pipeline can be caused in winter to influence the gathering and transportation. In summary, the problems of hydrogen sulfide, coal dust and water in the coal bed gas mining and gathering process have great influence on the quality of coal bed gas products and the pipeline transportation safety, the currently widely adopted method is to perform simple dehydration treatment in a coal bed gas production well field, and install special purification equipment in a booster station and a compression station for desulfurization, dust removal and dehydration treatment, but because the purification effect at a production well site is too poor, the load of the purification equipment in the booster station and the compression station is very large, and the cost is very high.

For example, CN201620006235.6 in the prior art is a purification device for coal bed gas liquefaction, which comprises a housing, an air outlet pipe and an air inlet pipe; a dust removal chamber and a demisting chamber are arranged in the shell, a plurality of cloth bags are uniformly distributed on the partition plate, and a pulse injection device is arranged above the cloth bags; an adsorption layer is arranged in the demisting chamber, and a mounting plate is arranged at the right end of the adsorption layer; an inclined plate is arranged between the pulse injection device and the adsorption layer, and a liquid storage device is arranged at the lower end of the inclined plate; a blowback pipe is arranged at the top of the demisting chamber; the bottom of the dust chamber is communicated with a collecting box; and a cooling cover is covered on the side wall of the shell, and a condensation pipe is coiled in the cooling cover. Aims to carry out dust removal treatment on the coal bed gas.

CN201310143089.2 a low pressure natural gas/coal bed gas purifier-discloses a low pressure natural gas/coal bed gas purifier, includes a jar body, set gradually gravity settling chamber, cyclone and gas filter in the jar body. The invention adopts three-stage treatment modes of gravity settling, cyclone separation and filtration, can efficiently remove various solid-liquid impurities contained in low-pressure natural gas or coal bed gas, and the removal amount of liquid and solid impurities in the gas after the third-stage treatment can reach 1000g/104m³(Qi) above.

The technical scheme belongs to professional treatment equipment and is not suitable for being installed and applied on the coal bed methane mining site.

Disclosure of Invention

The utility model discloses to the problem of hydrogen sulfide, buggy, the influence of moisture to gathering pipeline that the in-process produced is adopted to the coal bed gas, provide a device that production well site purified coal bed gas.

The utility model adopts the following technical scheme:

the utility model provides a device of production well site purification coal bed gas, includes dehydrator and desulfurization dust remover, dehydrator and desulfurization dust remover pass through communicating pipe and connect, and dehydrator upper portion is equipped with the gas vent, and the lower part is equipped with the outlet, and the dehydrator side is equipped with the outlet duct, is equipped with the cooler in the dehydrator, and desulfurization dust remover's upper portion is equipped with the intake pipe, and the lower extreme of intake pipe is equipped with the screen cloth, and desulfurization dust remover's upper portion is equipped with annotates the liquid mouth and loses the mouth, and the lower.

The cooler is a stainless steel cooling ball.

The cooler is a hollow metal ball, and the hollow metal ball is connected with the refrigerator.

The center of the cooler is flush with the axis of the communicating pipe.

The lower end of the air inlet pipe is inserted into the desulfurization dust remover.

The air inlet pipe is provided with a first valve, the air release port is provided with a second valve, the communicating pipe is provided with a third valve, the exhaust port is provided with a fourth valve, the air outlet pipe is provided with a fifth valve, the water outlet port is provided with a sixth valve, and the liquid outlet port is provided with a seventh valve.

And a window for observing the liquid level is arranged on the side wall of the desulfurization dust remover.

The utility model has the advantages as follows:

the utility model has the advantages of reasonable design, installation convenient to use, the simple operation. The method can be directly used for primary desulfurization, dust removal and dehydration of gas in a coal bed gas production well field. The burden of subsequent desulfurization and dust removal is reduced. The desulfurizing dust remover is provided with a visual window, so that the liquid in the cylinder can be observed in time, and the effective implementation of the purifying process is ensured. The desulfurization dust removal air inlet installs the screen cloth additional, improves desulfurization dust removal effect. The cooler in the dehydrator directly condenses the water vapor in the coal bed gas, and the dehydration effect can be effectively improved.

In a word, the utility model discloses can install in the source occasion of gas production gas transmission, carry out preliminary effective desulfurization, dust removal, dehydration to the coal bed gas that has just taken out, improve pipe gas transmission quality and gas transmission safety, reduce the low reaches compression, the purification cost before the liquefaction.

Drawings

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

wherein: 1-valve one; 2-liquid injection port; 3-air leakage port; 4-valve two; 5-valve III; 6-an exhaust port; 7-valve four; 8-valve five; 9-a dehydrator; 10-a cooler; 11-valve six; 12-a water discharge port; 13-a desulfurizing dust collector; 14-a screen mesh; 15-liquid discharge port; 16-valve seven; 17-a window; 18-an air inlet pipe; 19-communicating tube; 20-air outlet pipe.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in the figure, a device for producing well site purified coal bed gas, comprises a dehydrator 9 and a desulfurization dust remover 13, the dehydrator 9 and the desulfurization dust remover 13 are connected through a communicating pipe 19, the upper part of the dehydrator 9 is provided with an exhaust port 6, the lower part of the dehydrator is provided with an exhaust port 12, the side surface of the dehydrator 9 is provided with an air outlet pipe 20, a cooler 10 is arranged in the dehydrator 9, the upper part of the desulfurization dust remover 13 is provided with an air inlet pipe 18, the lower end of the air inlet pipe 18 is provided with a screen 14, the upper part of the desulfurization dust remover 13 is provided with an injection port 2.

The cooler 10 is a stainless steel cooling ball.

The cooler 10 is a hollow metal ball, and the hollow metal ball is connected with a refrigerator.

The center of the cooler 10 is flush with the axis of the communication pipe 19.

The lower end of the inlet pipe 18 is inserted into the interior of the desulfurization dust separator 13.

The air inlet pipe 18 is provided with a first valve 1, the air release port 3 is provided with a second valve 4, the communicating pipe 19 is provided with a third valve 5, the exhaust port 6 is provided with a fourth valve 7, the air outlet pipe 20 is provided with a fifth valve 8, the water discharge port 12 is provided with a sixth valve 11, and the liquid discharge port 15 is provided with a seventh valve 16.

The side wall of the desulfurization dust remover 13 is provided with a window 17 for observing the liquid level.

And (3) filling a supersaturated NaOH solution and a defoaming agent into the desulfurization dust remover 13 from a liquid injection port 2 at the top of the desulfurization dust remover 13, immersing an air inlet pipe 18 with a screen 14 in the liquid level, and sealing the liquid injection port 2 after liquid injection. Open valve 1 of intake pipe 18, the coal bed gas that the well site directly produced gets into desulfurization dust remover 13 inside by the intake pipe 18 at desulfurization dust remover 13 top, through hydrogen sulfide and dust in the inside alkaline liquid filtration coal bed gas, gets into dehydrator 9 through communicating pipe 19 afterwards, and the coal bed gas flow that gets into in dehydrator 9 meets microthermal stainless steel ball after the condensation dehydration, and the gas after the dehydration is exported outside pipeline by outlet duct 20 and is accomplished whole purification process.

When the liquid in the desulfurization dust remover 13 is observed from the window 17 to be insufficient or extremely turbid and the liquid in the cylinder needs to be filled or cleaned, the valve I1 and the valve III 5 are closed, the valve II 4 is opened to release the air, and then the liquid is filled from the liquid filling port 2 or the valve VII 16 is opened to discharge the sewage.

And the valve six 11 is required to be opened periodically to drain the dehydrator 9, the valve five 8 and the valve three 5 are closed firstly, and the valve four 7 is opened to discharge the water after being deflated.

Claims

1. The utility model provides a device of production well site purification coal bed gas which characterized in that: including dehydrator (9) and desulfurization dust remover (13), dehydrator (9) and desulfurization dust remover (13) are connected through communicating pipe (19), dehydrator (9) upper portion is equipped with gas vent (6), and the lower part is equipped with outlet (12), and dehydrator (9) side is equipped with outlet duct (20), is equipped with cooler (10) in dehydrator (9), and the upper portion of desulfurization dust remover (13) is equipped with intake pipe (18), and the lower extreme of intake pipe (18) is equipped with screen cloth (14), and the upper portion of desulfurization dust remover (13) is equipped with and annotates liquid mouth (2) and disappointing mouth (3), and the lower part is equipped with drain outlet (15).

2. The device for producing well site purified coal bed gas of claim 1, wherein: the cooler (10) is a stainless steel cooling ball.

3. The device for producing well site purified coal bed gas of claim 1, wherein: the cooler (10) is a hollow metal ball, and the hollow metal ball is connected with the refrigerator.

4. The device for producing well site purified coal bed gas of claim 1, wherein: the center of the cooler (10) is flush with the axis of the communicating pipe (19).

5. The device for producing well site purified coal bed gas of claim 1, wherein: the lower end of the air inlet pipe (18) is inserted into the desulfurization dust remover (13).

6. The device for producing well site purified coal bed gas of claim 1, wherein: the air inlet pipe (18) is provided with a first valve (1), the air release port (3) is provided with a second valve (4), the communicating pipe (19) is provided with a third valve (5), the exhaust port (6) is provided with a fourth valve (7), the air outlet pipe (20) is provided with a fifth valve (8), the water outlet (12) is provided with a sixth valve (11), and the liquid outlet (15) is provided with a seventh valve (16).

7. The device for producing well site purified coal bed gas of claim 1, wherein: and a window (17) for observing the liquid level is arranged on the side wall of the desulfurization dust remover (13).