Methane generation system in several U-shaped fermentation zones

Abstract

The invention provides a U-shaped methane generation system with multiple fermentation regions. The U-shaped methane generation system comprises a feed pipe, a discharge pipe and a U-shaped fermentation pipeline, wherein the U-shaped fermentation pipeline is arranged horizontally; the feed pipe and the discharge pipe are vertically connected to the two end sides of the U-shaped fermentation pipeline; a water pressure chamber is arranged on the upper part of the U-shaped fermentation pipeline; a feed pipe drain hole is formed in the connection position of the water pressure chamber and the feed pipe, while a discharge pipe drain hole is formed in the connection position of the water pressure chamber and the discharge pipe; a feed pipe gas stop plate is arranged at the connection position of the U-shaped fermentation pipeline and the feed pipe, while a discharge pipe gas stop plate is arranged at the connection position of the U-shaped fermentation pipeline and the discharge pipe; at least one gas stop plate is further arranged between the feed pipe gas stop plate and the discharge pipe gas stop plate; a fermentation region is formed between the feed / discharge pipe and the adjacent gas stop plate or the adjacent gas stop plate; an independent gas collecting pipe is arranged at the top of each fermentation region; the top of each fermentation region is connected with the independent gas collecting pipe and a valve is arranged on the gas collecting pipe; a U-shaped channel-type fermentation device is adopted and the fermentation path is long; sufficient flowing of the biogas slurry in the system is realized by virtue of the water pressure difference and the control of a one-way valve; besides, bacteria are distributed evenly to effectively prevent crusting; the U-shaped methane generation system with multiple fermentation regions is high in gas generation rate and suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of biogas, in particular to a biogas fermentation system. Background technique [0002] According to statistics, there are currently about 3 million biogas problems in my country. The problems are: 1. Unreasonable materials used, causing serious air and water leakage in the pool; 2. Poor mechanical performance of biogas digesters, reducing biogas The structural strength of the pool causes wide structural stress cracks inside the pool body; 3. The connection between the inlet / outlet pipe and the pool body is bent, sheared or even broken, and the shearing causes serious water and air leakage in the biogas tank; 4. 1. The fermentation route of the biogas digester is short, the efficiency of gas production is low, it is easy to crust, it is difficult to clean, and a large number of waste ponds are generated. Contents of the invention [0003] The technical problem to be solved by the invention is that the ferme...

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Problems solved by technology

[0003] 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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