Method for producing methane in secondary synchronous methane fermentation system

Abstract

The invention discloses a method for producing methane in a secondary synchronous methane fermentation system. The method comprises the following steps: fermenting to produce biogas in a primary fermentation system, and gathering the biogas in the side walls of a charging/discharging barrel and adjacent gas baffles or in a fermentation area formed between adjacent gas baffles; extruding the biogas slurry in a primary fermentation pipeline to flow to a first water guide pipe and a second water guide pipe, and finally allowing the biogas slurry to flow into a secondary fermentation pipeline; fermenting to produce biogas in a secondary fermentation system, and gathering the biogas between the side walls of a secondary feeding/discharging pipe and adjacent gas baffles or in a fermentation area formed between the adjacent gas baffles, allowing the biogas slurry to flow into a water pressure room in a one-way mode by virtue of a secondary discharging pipe, and allowing the biogas slurry in the secondary fermentation pipeline to flow into the water pressure room by virtue of a drainage pipe of a bacteria distribution device when the liquid level of the biogas slurry in the water pressure room reaches the lowest position of the upper part of the drainage pipe of the bacteria distribution device.

Description

technical field [0001] The invention relates to a biogas fermentation system, in particular to a multistage biogas fermentation system. Background technique [0002] Biogas, the chemical name; methane, as the name implies, is the gas in the swamp; with the development of biogas science and technology in China and the promotion of household biogas in rural areas, according to local use requirements and conditions such as temperature and geology, household biogas pits have fixed arch cover water pressure Type pool, large uncovered hydraulic pool, hanging pipe hydraulic pool, meandering cloth hydraulic pool, top return hydraulic pool, separated floating cover pool, semi-plastic pool, all-plastic pool and tank pool. Although there are various forms, they are generally formed by four basic types of changes: hydraulic biogas digesters, floating cover biogas digesters, semi-plastic biogas digesters and tank-type biogas digesters. [0003] The existing biogas still has many proble...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing biogas fermentation efficiency is low, the biogas convection effect is poor, the fermentation route is short, and the utilization rate of fermentation raw materials is low.

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