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Comprehensive utilization device and method of biomass landfill gas

A technology for landfill gas and biomass, applied in separation methods, chemical instruments and methods, waste fuels, etc., can solve the problems of reducing greenhouse effect biomass landfill gas, etc., to reduce pollution and waste of resources, economical simplicity, Promising effects

Inactive Publication Date: 2013-03-27
雷学军 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biomass landfill is to bury the carbon dioxide absorbed by plant photosynthesis into the ground to reduce the content of carbon dioxide on the earth. However, there is no action to reduce the greenhouse effect by using biomass landfill at home and abroad, and there is no method to use biomass landfill gas.

Method used

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  • Comprehensive utilization device and method of biomass landfill gas

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Experimental program
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Effect test

Embodiment 1

[0029] see figure 1 , the comprehensive utilization equipment of biomass landfill gas includes a gas collection tank 1; the gas collection tank 1 communicates with the dehydration tower 2 through the A pipeline 17; the bottom of the dehydration tower 2 communicates with the leachate pool 8 through the M pipeline 33 , the top of the dehydration tower 2 communicates with the bottom of the filter tower 3 through the B pipeline 18; the bottom of the filter tower 3 is provided with a drain valve 27, and the top of the filter tower 3 communicates with the bottom of the desulfurization tower 4 through the C pipeline 19; the top of the desulfurization tower 4 Connect with the upper part of the vacuum deoxidation tower 5 through the D pipe 21; the top of the vacuum deoxidation tower 5 is provided with a deoxidation solution pipe 36, and the deoxygenation solution pipe 36 extends into the inner cavity of the vacuum deoxidation tower 5, and the bottom of the vacuum deoxidation tower 5 is ...

Embodiment 2

[0037] A method for comprehensive utilization of biomass landfill gas based on the above equipment, comprising the steps of:

[0038] (1) Collect biomass landfill gas to gas collection tank;

[0039] (2) The gas collected in step (1) is dehydrated by a dehydration tower, filtered by a filter tower, desulfurized by a desulfurization tower, deoxidized by a vacuum deoxidation tower, dried by a drying tower, and then separated into methane, nitrogen and carbon dioxide by a membrane separation device;

[0040] (3) Purify and compress the methane separated in step (2) into the methane storage tank; purify and compress the nitrogen through the nitrogen purification device and collect it into the nitrogen storage tank; purify the carbon dioxide through the carbon dioxide purification device It is compressed and collected in a carbon dioxide storage tank.

[0041] Among them, step (1) is to set up multiple vertical gas collection wells during the biomass landfill, and the top of the c...

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Abstract

The invention discloses a comprehensive utilization device and a method of biomass landfill gas. The principle of the invention is that the separation purpose is reached based on the different membrane permeability of various gases in pretreated mixed gas under the promotion of a pressure. The device and method of the invention are applicable to multiple fields such as industry, agriculture, medicine, chemical engineering, machinery, electronics, and the like, are clean, high-efficient, economical, and simple, can reduce the influence to the environment and the destroy to the ecology by biomass landfill gas, and have wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of utilization of biomass landfill gas, and in particular relates to a comprehensive utilization device and method of biomass landfill gas. Background technique [0002] After the biomass is landfilled, the organic matter undergoes biochemical reactions to produce a large amount of gas, which is usually called landfill gas. The reaction is divided into four stages: the first stage is aerobic biodecomposition, which may last for several weeks, and the main components are nitrogen, oxygen and carbon dioxide; oxygen is brought in by biomass during landfilling, and after a period of biochemical reaction is gradually depleted, and carbon dioxide is produced over time. The second stage is anaerobic biological decomposition, the main components are hydrogen, nitrogen and carbon dioxide; oxygen depletion enters the anaerobic reaction stage. The third stage is anaerobic biological decomposition, the carbon dioxide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00C07C9/04C07C7/00C01B21/04C01B31/20C01B32/50
CPCY02E50/346Y02E50/30
Inventor 雷学军祝加铧雷谨榕雷训
Owner 雷学军