Landfill leachate anaerobic biogas purification method

A technology of landfill leachate and purification method, which is applied to the field of purification and purification of biogas produced by anaerobic fermentation of urban domestic landfill leachate, can solve the problems of complex biogas composition and inability to realize anaerobic biogas purification and purification of landfill leachate, and achieve purification High efficiency and the effect of reducing the content of water vapor

Active Publication Date: 2015-09-16
SHANGHAI CHENGYUE NEW ENERGY TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The composition of biogas produced by anaerobic fermentation of municipal solid waste leachate is complex, and the hydrogen sulfide, organic sulfur, VOCs, water vapor, etc. contained in it have a great impact on the puri

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  • Landfill leachate anaerobic biogas purification method

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[0043] The content of the present invention will be further explained below in conjunction with the drawings:

[0044] The figure shows the flow chart of the method for purification and purification of landfill leachate anaerobic biogas, including anaerobic tank 1, connected to anaerobic tank 1 with water seal tank 2, and connected to water seal tank 2 with centrifugal dewatering device I3, Roots blower 4 is connected to the dewaterer Ⅰ3, a wet desulfurization tower 5 is connected to the roots blower 4, a centrifugal desulfurizer Ⅱ6 is connected to the wet desulfurization tower 5, and a dry desulfurizer is connected to the centrifugal desulfurizer Ⅱ6 The hydrogen sulfide desulfurization tower 7, the dry hydrogen sulfide desulfurization tower 7 is connected to a dry organic sulfur desulfurization tower 8, the dry organic sulfur desulfurization tower 8 is connected to a VOCs removal device 9, and the VOCs removal device 9 is connected to The air inlet buffer tank 10 is connecte...

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Abstract

The invention relates to the field of biogas purification, and discloses a landfill leachate anaerobic biogas purification method. The method comprises the steps of gas liquid water dust removing, hydrogen sulfide rough removing, hydrogen sulfide fine removing, gas organic sulfur removing, biogas VOCs removing, freeze-drying machine processing, biogas purification system processing, and three-stage membrane separation system processing. With the method, water vapor content in biogas can be effectively reduced, such that subsequent compressor and membrane assemblies are protected, and a purification efficiency is high. After purification, a biogas concentration can be higher than 99.9%. CO2/CH4 high-efficiency separation membrane reflux gas can be reutilized, wherein a recovery rate can be higher than 99.0%.

Description

technical field [0001] The invention relates to a purification method in the field of biogas purification, in particular to a process method for purifying and purifying biogas produced by anaerobic fermentation of municipal solid waste leachate. Background technique [0002] Biogas is a mixed gas, mainly composed of methane (50-80%), carbon dioxide (20-50%), nitrogen, oxygen, hydrogen sulfide, hydrogen, etc. In order to facilitate transportation and prevent pipeline corrosion, dehydration treatment is required; in order to prevent personal safety problems caused by leakage, pipeline corrosion, boiler and power generation equipment corrosion, etc., hydrogen sulfide and organic sulfur need to be removed; in order to expand the application range and value of biogas, such as production To obtain compressed natural gas and pipeline gas for vehicles, to improve the calorific value and combustion performance, it is necessary to remove carbon dioxide. In recent years, due to rising...

Claims

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Application Information

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IPC IPC(8): C02F3/28C10L3/10
CPCY02A50/20Y02E50/30
Inventor 高航张宏宇
Owner SHANGHAI CHENGYUE NEW ENERGY TECH
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