Large/ultra-large biogas digester suitable for dry continuous fermentation

Abstract

The invention discloses a large / ultra-large biogas digester suitable for dry continuous fermentation. The biogas digester comprises a feeding tank, a fermentation tank, a sunlight room, a heat collection high-temperature water tank and an automatic temperature control system, the fermentation tank is cuboid-shaped, and the fermentation tank comprises a foundation base, a tank wall, a support steel pipe, a circulating coil pipe and a double-roller feeder with blades; the feeding tank is built on the east of the fermentation tank and is connected with the fermentation tank; the sunlight room is built right above the feeding tank; the heat collection high-temperature water tank is built right above the fermentation tank; and the automatic temperature control system can automatically control hot water circulation in the heat collection high-temperature water tank, the fermentation tank and the feeding tank. The biogas digester has the beneficial effects that the biogas digester is suitable for dry-method continuous fermentation and can be made into the large / ultra-large biogas digester, in addition, the volume gas production rate of the biogas digester is obviously improved (more than 5 times), and the biogas digester is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to a biogas digester, in particular to a large / super-large biogas digester suitable for dry continuous fermentation, and belongs to the technical field of environmental protection. Background technique [0002] At present, the environmental pollution at home and abroad is serious, and energy is in short supply. The development of new energy and renewable new energy is an urgent problem to be solved. Our country attaches great importance to this aspect, and has already begun to vigorously develop renewable new energy—biogas. [0003] In my country, the biogas fermentation process can be divided into wet fermentation process and dry fermentation process from the perspective of fermentation concentration, among which: [0004] (1) Wet fermentation process: the dry matter concentration of the fermentation feed liquid is controlled below 10%, and a large amount of water is added when the fermentation starts. The amount of gas produce...

AI Technical Summary

Problems solved by technology

However, due to the high solid concentration of dry fermentation, it is difficult to adopt continuous or semi-feeding feeding methods. Most of them use batch feeding (intermittent fermentation), and the work efficiency is low. In addition, dry fermentation also has discharge difficult problem, which severely limits its application

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