CN216937618U

CN216937618U - Gas collecting and treating device in landfill yard closing project

Info

Publication number: CN216937618U
Application number: CN202122942067.5U
Authority: CN
Inventors: 乔新泉; 郑志刚; 王东伟; 许环
Original assignee: China National Chemical Engineering No14 Construction Co ltd
Current assignee: China National Chemical Engineering No14 Construction Co ltd
Priority date: 2021-11-27
Filing date: 2021-11-27
Publication date: 2022-07-12
Anticipated expiration: 2031-11-27

Abstract

The utility model discloses a gas collecting and treating device in a landfill yard sealing project, which comprises an air extraction well, an air storage tank, a combustion chamber and a waste gas treatment chamber, wherein the air extraction well is vertically arranged in the sealed landfill yard, an air outlet pipe is arranged in the air extraction well, an air extraction hole is arranged on the surface of the air outlet pipe, the air extraction hole is connected with an air extraction pipe which is inclined inwards and upwards, an air extractor is arranged above the inner wall of the air extraction well, the air extractor is connected with the air storage tank through a pipeline, the air storage tank is connected with the combustion chamber, a water tank is communicated above the combustion chamber, the combustion chamber is connected with the waste gas treatment chamber, and an exhaust pipe is arranged outside the waste gas treatment chamber.

Description

Gas collecting and treating device in landfill yard closing project

Technical Field

The utility model belongs to the technical field of waste gas treatment, and particularly relates to a gas collecting and treating device in a landfill yard closing project.

Background

The existing urban refuse landfill is a place for stacking solid refuse, the solid refuse is piled up like a mountain after being dumped for a long time, sewage cross flow is generated, odor is pungent, the refuse landfill needs to be sealed according to the current environmental protection requirements of the country, the compacted refuse is covered on the outer layer to form a hill, the refuse is covered below the hill, green plants are planted on the hill, the environment is protected, but the refuse is fermented for a long time in the closed environment, the concentration of combustible gas such as methane, methane and the like can be very high, the danger is very high, and therefore the gas in the sealing engineering needs to be collected and processed.

Disclosure of Invention

In order to solve the problems, the utility model discloses a gas collecting and treating device in a landfill yard sealing project, holes are drilled in the landfill yard sealing project, waste gas in a mountain body is pumped out through pumping, the safety is improved, the waste gas is incinerated after being treated, the heat is recycled, the practicability is high, and the device is worthy of popularization.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

gas collection processing apparatus in landfill yard engineering, including aspiration well, gas holder, combustion chamber, exhaust-gas treatment room, the vertical setting of aspiration well is equipped with the outlet duct in the aspiration well in the landfill yard that seals, and the outlet duct surface is equipped with the aspirating hole, the ascending exhaust tube of tilt inside is connected to the aspirating hole, and aspiration well inner wall top is equipped with the air exhauster, the air exhauster passes through the pipe connection gas holder, gas tank connection combustion chamber, combustion chamber top intercommunication water tank, the exhaust-gas treatment room is connected to the combustion chamber, and the exhaust-gas treatment room is equipped with the blast pipe outward.

As an improvement of the utility model, the number of the pumping wells is more than or equal to 4.

As an improvement of the utility model, the air outlet pipe extends into the ground level of the refuse landfill.

As an improvement of the utility model, a sealing cover is arranged on the extraction well.

As an improvement of the utility model, the surface of the air outlet pipe is provided with an anticorrosive coating.

As an improvement of the utility model, the pipeline is provided with a control valve.

As an improvement of the utility model, a pressure gauge is arranged on the gas storage tank.

As a modification of the utility model, a fire gun is arranged outside the combustion chamber.

As an improvement of the utility model, a thermometer is arranged on the water tank.

As an improvement of the utility model, the exhaust pipe is provided with a detection port.

The beneficial effects of the utility model are as follows:

(1) waste gas in the refuse landfill is pumped out through pumping, and is conveyed to the combustion chamber along a pipeline for incineration, the heat is recycled, the incinerated gas is treated, and the gas is discharged after being detected to meet the environmental protection standard, so that the structure is reasonable, the operation is convenient, the fire prevention risk is reduced, the overflow of peculiar smell is avoided, and the environment is protected;

(2) the gas well is directly pumped in the sealed refuse landfill without digging the original refuse dump for pipe placing, so that the construction is convenient, and the cost is reduced;

(3) a plurality of extraction wells are arranged, an internal exhaust fan continuously extracts gas to form micro negative pressure, and the gas can enter an air outlet pipe from an extraction pipe, so that waste gas such as methane, methane and the like can be fully collected;

(4) an air exhaust pipe which inclines upwards inwards is arranged in the air outlet pipe, so that gas can enter the air outlet pipe, and solid garbage and percolate cannot enter the air outlet pipe, so that the air exhaust hole is not blocked;

(5) the inner surface and the outer surface of the air outlet pipe are provided with the anti-corrosion layers, so that the service life is long.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of an outlet pipe according to the present invention.

List of reference symbols:

1. the device comprises an air pumping well, 2, an air storage tank, 3, a combustion chamber, 4, a waste gas treatment chamber, 5, a refuse landfill, 6, an air outlet pipe, 7, an air pumping hole, 8, an air pumping pipe, 9, an exhaust fan, 10, a pipeline, 11, a water tank, 12, an exhaust pipe, 13, a sealing cover, 14, a control valve, 15, a pressure gauge, 16, a fire gun, 17, a thermometer, 18 and a detection port.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the utility model and not as limiting the scope of the utility model.

As shown in the figure, the gas collecting and treating device in the landfill yard sealing project comprises an air extraction well 1, a gas storage tank 2, a combustion chamber 3 and a waste gas treatment chamber 4, wherein the air extraction well 1 is vertically arranged in a sealed landfill yard 5, an air outlet pipe 6 is arranged in the air extraction well 1, an air extraction hole 7 is formed in the surface of the air outlet pipe 6, the air extraction hole 7 is connected with an air extraction pipe 8 which inclines upwards inwards, an exhaust fan 9 is arranged above the inner wall of the air extraction well 1, the exhaust fan 9 is connected with the gas storage tank 2 through a pipeline 10, the gas storage tank 2 is connected with the combustion chamber 3, a water tank 11 is communicated above the combustion chamber 3, the combustion chamber 3 is connected with the waste gas treatment chamber 4, and an exhaust pipe 12 is arranged outside the waste gas treatment chamber 4.

According to the gas collecting and treating device in the landfill yard sealing project, a well (the air pumping well 1) is drilled on the sealed landfill yard, waste gas in the landfill yard is pumped out through air pumping, the waste gas is conveyed to the combustion chamber along a pipeline to be burnt, the heat is recycled, the burnt gas is treated, the waste gas is discharged after being detected to meet the environmental protection standard (the detection port 18 is arranged on the exhaust pipe 12), the structure is reasonable, the operation is convenient, the fire prevention risk is reduced, the odor is prevented from overflowing, and the environment is protected.

The utility model directly pumps the gas well in the sealed refuse landfill without digging the original refuse dump for pre-burying and pipe placing, thereby having convenient construction and reducing cost.

The utility model is provided with a plurality of extraction wells (the number of the extraction wells 1 is more than or equal to 4), the internal exhaust fan continuously extracts to form micro negative pressure, gas can continuously enter the gas outlet pipe from the extraction pipe, and waste gas such as methane, methane and the like can be fully collected.

The air outlet pipe 6 is internally provided with an air exhaust pipe 8 which inclines upwards inwards, so that gas can enter, solid garbage and percolate can not enter the air outlet pipe, and the air exhaust hole 7 is ensured not to be blocked.

According to the utility model, the air outlet pipe 6 extends into the horizontal line of the refuse landfill to extract waste gas from the lowest part, and the waste gas rises after entering the air extraction pipe 8, so that the exhaust fan 9 is arranged above to ensure that all gas in the air outlet pipe 6 is extracted.

The sealing cover 13 is arranged on the air extraction well 1, so that the peculiar smell of waste gas is prevented from overflowing.

The surface of the air outlet pipe 6 is provided with the anticorrosive coating, and the service life of the air outlet pipe 6 is long.

The pipeline 10 is provided with a control valve 14 for controlling the flow.

The pressure gauge 15 is arranged on the gas storage tank 2, so that the pressure inside the gas storage tank 2 can be monitored at any time, and the safety is ensured.

The fire gun 16 is arranged on the outer side of the combustion chamber 3, combustible gas such as methane, methane and the like can be ignited and can be fully combusted, the heat of combustion is transferred into the water tank 11 to heat water, and the water tank 11 is provided with the thermometer 17, so that the monitoring is convenient.

It should be noted that the above-mentioned contents only illustrate the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and it will be apparent to those skilled in the art that several modifications and embellishments can be made without departing from the principle of the present invention, and these modifications and embellishments fall within the protection scope of the claims of the present invention.

Claims

1. Gaseous collection processing apparatus in landfill yard closing project, its characterized in that: including aspirating well, gas holder, combustion chamber, exhaust-gas treatment room, the vertical setting of aspirating well is equipped with the outlet duct in the aspirating well in the rubbish landfill that seals, and the outlet duct surface is equipped with the aspirating hole, the aspirating hole is connected and is turned towards the ascending exhaust tube of leanin, and aspirating well inner wall top is equipped with the air exhauster, the air exhauster passes through the pipe connection gas holder, gas tank connection combustion chamber, combustion chamber top intercommunication water tank, the exhaust-gas treatment room is connected to the combustion chamber, is equipped with the blast pipe outside the exhaust-gas treatment room.

2. The gas collecting and processing device in the landfill yard engineering of claim 1, characterized in that: the number of the pumping wells is more than or equal to 4.

3. The gas collecting and processing device in the landfill yard engineering of claim 1, characterized in that: the air outlet pipe extends into the horizontal line of the refuse landfill.

4. The gas collecting and processing device in the landfill yard closing project of claim 1, wherein: and a sealing cover is arranged on the extraction well.

5. The gas collecting and processing device in the landfill yard engineering of claim 1, characterized in that: and an anticorrosive layer is arranged on the surface of the air outlet pipe.

6. The gas collecting and processing device in the landfill yard engineering of claim 1, characterized in that: and a control valve is arranged on the pipeline.

7. The gas collecting and processing device in the landfill yard engineering of claim 1, characterized in that: and a pressure gauge is arranged on the gas storage tank.

8. The gas collecting and processing device in the landfill yard engineering of claim 1, characterized in that: and a fire gun is arranged outside the combustion chamber.

9. The gas collecting and processing device in the landfill yard engineering of claim 1, characterized in that: and a thermometer is arranged on the water tank.

10. The gas collecting and processing device in the landfill yard closing project of claim 1, wherein: the exhaust pipe is provided with a detection port.