Method for generating methane by using device capable of promoting multistage fermentation with barometric disturbance

Abstract

The invention discloses a method for generating methane by using a device capable of promoting multistage fermentation with barometric disturbance, which comprises the following steps: biogas is generated by fermentation in a primary fermentation system and accumulated in a fermentation which is formed between the side wall of an inlet / outlet charging barrel and the adjacent gas barrier or between the adjacent gas barriers, and biogas slurry in a primary fermentation pipeline is forced to flow to a first water manifold and a second water manifold and finally flow into a secondary fermentation pipeline; biogas is generated by fermentation in a secondary fermentation system and accumulated in a fermentation region which is formed between the side wall of a secondary inlet / outlet charging barrel and the adjacent gas barrier or between the adjacent gas barriers, and flows into a water pressure chamber through a discharge line drainage pipe; and when the secondary fermentation pipeline is used for storing the biogas, the biogas slurry stored in the water pressure chamber unidirectionally flows into the secondary fermentation pipeline through a drainage pipe of a bacterium distributor.

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...

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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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