Method for producing biogas employing super-effective biogas fermentation system

Abstract

The invention discloses a method for producing biogas employing a super-effective biogas fermentation system. The method comprises the following steps: a fermentation raw material is poured into a feeding pipe, wherein a plurality of fermentation zones in an annular fermentation pipeline generate different biogases in quantity; the fermentation zone with relatively high atmospheric pressure prompts biogas slurry to flow towards the fermentation zone with relatively low atmospheric pressure; when the biogas is fully collected in the fermentation zone with relatively high atmospheric pressure, the biogas generated by further fermentation flows towards the adjacent fermentation zone which is not full of the biogas; in the biogas production process in the annular fermentation pipeline, the biogas slurry is extruded in the fermentation pipeline into a feeding pipe, a discharge pipe and a bacteria distribution device; firstly, the biogas slurry in the fermentation pipeline is extruded into a water pressure room through the bacteria distribution device; and when the liquid level of the biogas slurry in the water pressure room reaches the lowest liquid levels of a feeding pipe drain pipe and a discharge pipe drain pipe, the biogas slurry flows into the water pressure room through the feeding pipe drain pipe, and flows into the water pressure room through the discharge pipe drain pipe in a one-way.

Description

technical field [0001] The invention relates to the technical field of biogas, in particular to a biogas fermentation system. Background technique [0002] With the development of my country's biogas science and technology and the promotion of rural household biogas, according to local use requirements and conditions such as temperature and geology, household biogas digesters include hydraulic pools with fixed arch covers, hydraulic pools with large uncovered covers, etc. There are several styles, but in summary, it is generally formed by four basic types of changes in hydraulic biogas digesters, floating cover biogas digesters, semi-plastic biogas digesters and tank biogas digesters. [0003] The short fermentation of the existing biogas fermentation system results in insufficient fermentation of the fermentation raw materials, and the poor fluidity of the biogas slurry results in uneven distribution of strains and easy sedimentation at the bottom layer, which affects the fe...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the fermentation route in the biogas fermentation system is short, the biogas slurry self-circulation effect is poor, and the uneven distribution of bacteria in the biogas slurry affects the gas production rate

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