N-shaped underground plug-flow methane fermentation system

Abstract

The invention relates to a fermentation plant for large and medium methane tanks, has the characteristics of reducing the construction cost and floor area of large and medium methane pools and the like, and belongs to the technical field of environmental protection. The scheme of the invention has the characteristics of high yield, low manufacturing cost, full mechanization of shelling, stirring and feeding and labor conservation, and is convenient in management and the like. The technical scheme is as follows: the n-shaped underground plug-flow methane fermentation system comprises an n-shaped methane tank, wherein the upper part of the methane tank is connected with a feeding device, a mixer and an automatic discharge pipe viewport; and a fermentation material preprocessing pool, a discharge pool and an automatic residue-liquid separation pool are arranged outside the methane tank. The invention solves the problem of high construction cost in the large and medium methane tanks, and the problems of large occupied area, difficult popularization and the like in the ground large and medium methane fermentation systems.

Description

Technical field [0001] The invention relates to a fermentation device of a large and medium-sized biogas tank, which has the characteristics of reducing the construction cost and occupied area of ​​the large and medium-sized biogas tank, and belongs to the technical field of environmental protection. Background technique [0002] At present, due to the lack of daily management and follow-up services of household biogas digesters, many farmers have built them but not used them. In addition, rural household breeding is decreasing day by day, and the livestock and poultry manure used as raw material for biogas is insufficient, which makes the maintenance and daily management of the biogas digester a burden of life for users who have existing household biogas digesters due to insufficient fermentation raw materials. The phenomenon of preferring not to feed and refuel the biogas digester. In recent years, large-scale livestock and poultry farms in rural areas have developed rapi...

AI Technical Summary

Problems solved by technology

Household biogas digesters with mature technology cannot meet the needs of rural livestock and poultry farms at all, and the construction and operation costs of traditional large and medium-sized biogas digesters are relatively high, which is simply unaffordable for low-profit farming products.

Moreover, when the height of the traditional large and medium-sized biogas is too high, the biogas produced at the bottom should not emerge, and it is easy to produce crusting on the top layer, which hinders gas production.

At the same time, the winter temperature in the north is low, and it is difficult to keep the outdoor ground biogas digesters warm. The winter operation of large and medium-sized biogas is still a problem

The construction materials of traditional large and medium-sized biogas tanks are mostly steel structures, which are relatively expensive

At the same time, the above-ground large and medium-sized biogas fermentation systems usually occupy tens of acres of land, resulting in the reduction of cultivated land and other problems.

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