CN201317769Y

CN201317769Y - Low-cost collecting device for methane generated by landfill of municipal refuse

Info

Publication number: CN201317769Y
Application number: CNU2008200817510U
Authority: CN
Inventors: 李国强; 李哲
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-07
Filing date: 2008-10-07
Publication date: 2009-09-30
Anticipated expiration: 2018-10-07

Abstract

A low-cost collecting device for the methane generated by the landfill of municipal refuse comprises a methane collecting pipe, and pipelines and an evacuating device used for conveying and centralized use of the collected methane. The low-cost collecting device is characterized in that the methane collecting pipe made of PC materials is inserted in a methane collecting well excavated in a refuse landfill, a methane filtering layer made of centimeter stones used for building is arranged in an area measured at least 30 centimeters in radius in the vicinity of the methane collecting pipe; and air inlets are densely formed at the wall of the methane collecting pipe. The low-cost collecting device ensures that the methane generated by the garbage can be rapidly collected to the methane collecting pipe, so as to improve the methane collecting effect; and then through the action of the evacuating device of a methane collecting chamber, the utility model can improve the ability of collecting the underground methane generated by the refuse landfill.

Description

The municipal wastes landfill produces the low-cost collection apparatus of biogas

Technical field

The utility model relates to a kind of collection apparatus that the municipal wastes landfill produces biogas of collecting.

Background technology

Domestic waste is a waste that amount is big, and landfill disposal is the mode that generally adopts at present.Because the composition of domestic waste mainly is depleted dish class, garbage or materials such as discarded wrapping paper and moisture, be embedded in undergroundly for a long time, produce chemical reaction in its fermentation, and the biogas that generates is energy of great use.Usually said biogas obtains by the construction methane-generating pit, a general mature technology that is used for improving peasant's living environment and solution energy problem in the rural area that possesses the biogas raw material.And the rubbish of city refuse landfill generation biogas utilizes as the energy, one has the more technology of golden eggs beyond doubt, from the below ground drilling well of refuse landfill, following pipe extracts biogas and guides to generating set change biogas can also be a lot of into the technology of electric energy at present., but because the pipeline that adopts is metal pipe material, the composition corrosion that cost height, pipeline are produced in the chemical reaction of scrap heap easily reduces work-ing life.In addition, the pipeline in being in rubbish around processing not interests to collect biogas also be a problem.

The utility model content

The purpose of this utility model just provides the low-cost collection apparatus that a kind of municipal wastes landfill produces biogas.

Concrete scheme is:

A kind of municipal wastes landfill produces the low-cost collection apparatus of biogas, comprises the getter pipe and pipeline and the extraction equipment that uses carried and concentrated to the biogas of collecting; Wherein, PC material getter pipe inserts in the gas recovery well of digging in the refuse landfill, is enclosing the filter gas-bearing formation that is filled with centimetre stone formation for building at least 30 centimeters scopes around the getter pipe; Have the air inlet port that is covered with tube wall on the getter tube wall.The nose end of getter pipe is connected to gas transmission to be in charge of, and each gas transmission is in charge of and is switched to the collection chamber that vacuum fan is installed, and picks out aspirating pipeline to user side from collection chamber.User side comprises the equipment that adopts marsh gas power generation, perhaps with collective and the individual consumer of biogas as the life combustion gas.Also being equipped with one in aspirating pipeline is the safe pool of envelope gas-bearing formation with water, to alleviate the pipeline gas pressure loads.In addition, the getter pipe adopts the PC material to make body.Upper end at the getter pipe is manufactured with threaded connector, in order to after up landfill surpasses existing getter pipe height when rubbish with getter pipe spreading up, do the film envelope surface and the soil layer capping of same way as again and handle, the biogas in the continuation collection scrap heap.

Just can make the low-cost collection apparatus that a kind of municipal wastes landfill produces biogas according to such scheme.Because pipeline adopts the PC pipe, can reduce cost, and increases work-ing life.After the getter pipe is placed in the gas recovery well of refuse landfill, adopt centimetre stone for building to be enclosed in constituting of getter pipe all around around the body and filtered gas-bearing formation, isolated contacting of rubbish and getter pipe, and gap is preferably arranged wherein, both avoided tiny grain material in the rubbish to the obstruction of getter tube wall air inlet port, guarantee that again the biogas that rubbish produces is pooled in the getter pipe fast, has improved the getter effect.Pass through the effect of middle vacuum fan in the collection chamber again, just can improve the acquisition capacity of the underground biogas of refuse landfill.

Description of drawings

Fig. 1 is the low-cost collection apparatus structural representation that the municipal wastes landfill produces biogas.

Embodiment

Below in conjunction with accompanying drawing,, technical scheme is described further as an embodiment.

With reference to Fig. 1, the getter pipe 9 of this device adopts the PC pipe, opens a series of air inlet port 10 on tube wall.During installation, decide earlier earlier the digging point of gas recovery well 2 in refuse landfill 1, according to the area of landfill yard, selected a plurality of gas recovery wells 2 so that the biogas of refuse landfill 1 underground rubbish generation can be faster from each station acquisition to getter pipe 9.Dig into round shape gas recovery well 2 again.The diameter in well chamber can consider to determine promptly after getter pipe 9 inserts in the gas recovery well 2, the gap more than 30 centimeters is arranged around the pipe and between waste layer according to the size of getter pipe.In the interval of tube wall and waste layer, fill centimetre stone commonly used in the building and form filter gas-bearing formation 11; Because formation ventilation space naturally between centimetre stone has guaranteed to be pooled to fast around the getter pipe from biogas in the scrap heap.Simultaneously, guaranteed that again the air inlet port 10 on the getter tube wall can be not blocked.In addition after the vacuum fan work of installing in the collection chamber 6 of upper pipeline, make all to form a kind of subnormal ambient in the space of the filter gas-bearing formation 11 that the outer centimetre stone of getter pipe 9 inner chambers, getter tube wall constitutes, the biogas that produces in the scrap heap just can be pooled to around the getter pipe 9 faster.The upper end of the getter pipe of installing in each gas recovery well 2 is connected a gas transmission and is in charge of 7 to collection chamber 6, each gas recovery well is received the biogas that comes collect in the chamber; Connect pipeline from collection chamber 6 and form induction pipe 5, be transported to each user side 4.Just constitute the low-cost collection apparatus that a municipal wastes landfill produces biogas.

With reference to Fig. 1, the bottom of each getter pipe 9 promptly is in the part of garbage loading embeading layer below ground, opens air inlet port 10 on its tube wall; Be in the above not perforate of part in garbage loading embeading layer ground.In order to guarantee pipeline air feed safety, in aspirating pipeline 5, installing one is the safe pool 3 of envelope gas-bearing formation with water.Do not drain for the biogas that produces in the scrap heap that makes refuse landfill 1 below ground in addition, on landfill yard ground, lay plastic membranous layer, handle with the soil layer press seal again from the surface.Guarantee to reach best aerogenesis environment in the landfill yard scrap heap.

Pile up waste layer again when reaching getter pipe 9 upper ends on original garbage loading embeading layer in order to solve, original equipment continues available, is manufactured with threaded connector 8 in getter pipe 9 upper ends.When the rubbish of landfill up is stacked into the getter mouth of pipe again, can utilize pipeline connection spreading getter pipe 9, other pipeline all up extends thereupon and gets final product.

The municipal wastes landfill that constitutes according to such scheme produces the biogas that the low-cost collection apparatus of biogas obtains, and concentrates after aspirating pipeline 5 is delivered to biogas is that the power station 4 of the energy is that variable biogas energy is that electric energy uses.Also can pass through gas distributing system, flow to urban and rural residents and do the use of the daily life energy.

Claims

1, a kind of municipal wastes landfill produces the low-cost collection apparatus of biogas, comprises getter pipe (8) and pipeline and the extraction equipment that uses carried and concentrated to the biogas of collecting; It is characterized in that in the gas recovery well (2) of digging in PC material getter pipe (8) the insertion refuse landfill (1), enclosing the filter gas-bearing formation (10) that is filled with centimetre stone formation for building at least 30 centimeters scopes around the getter pipe; Have the air inlet port (9) that is covered with tube wall on the getter tube wall.

2, a kind of municipal wastes landfill according to claim 1 produces the low-cost collection apparatus of biogas, and it is characterized in that filtering gas-bearing formation (10) is to be filled by centimetre stone to constitute.

3, a kind of municipal wastes landfill according to claim 1 produces the low-cost collection apparatus of biogas, the nose end that it is characterized in that the getter pipe is connected to gas transmission and is in charge of (7), each gas transmission is in charge of and is switched to the collection chamber (6) that vacuum fan is installed, and picks out aspirating pipeline (5) to user side (4) from collection chamber (6).

4, a kind of municipal wastes landfill according to claim 3 produces the low-cost collection apparatus of biogas, it is characterized in that user side (4) comprises the equipment that adopts marsh gas power generation, perhaps with collective and the individual consumer of biogas as the life combustion gas.

5, a kind of municipal wastes landfill according to claim 3 produces the low-cost collection apparatus of biogas, and it is characterized in that also being equipped with in aspirating pipeline (5) one is the safe pool (3) of envelope gas material with water.