Multi-element circulating straw biogas fermentation system

Abstract

The invention relates to a multi-element circulating straw biogas fermentation system. By connecting a straw pre-treatment tank, a stirring tank, a fermentation tank, a solid-liquid separation tank, a first biogas residue storage tank, a second biogas residue storage tank, water supplementing tank and a gas storage tank, the recycling and reusing of biogas and biogas residues are achieved, and temperature in a fermentation process is guaranteed, so as to improve a straw composting degree, shorten a fermentation cycle, increase a fermentation substrate degrading and using rate and guarantee temperature of the fermentation system; the fermentation system is efficient, energy-saving, strong in applicability and simple in structure; the fermentation system can bring about good economic and environmental protection benefits; and the fermentation system is excellent in practical value and popularization significance.

Description

technical field [0001] The invention relates to the technical field of biogas fermentation, in particular to a multiple-circulation straw biogas fermentation system. Background technique [0002] Energy shortage, environmental pollution and the resulting human health problems are the main problems faced by today's society. Therefore, the research and development of renewable clean energy has become extremely urgent. Straw biogas fermentation can not only realize the reuse of waste straw, but also obtain clean energy. It has an important role in saving firewood, electricity, labor, increasing fertilizer, increasing production, increasing efficiency and purifying the environment. my country is a large agricultural country with an annual output of about 600 million tons of straw waste. Therefore, it is an effective way to use straw in a reasonable and efficient way to use the resource-rich agricultural waste straw for fermentation to produce biogas. However, most of the curren...

AI Technical Summary

Problems solved by technology

However, most of the current biogas fermentation systems have problems such as low substrate degradation rate and biogas yield, unstable temperature of the fermentation system, and low level of industrialization, which seriously restrict the development of new energy technologies for straw biogas fermentation.

Images