Biogas steam explosion fermentation system

Abstract

The invention relates to a biogas production system for steam explosion fermentation of solid biomass, and belongs to the field of biological environment and energy. The invention provides a novel solid biomass treatment system which mainly comprises three process stages of steam explosion, biological acid hydrolysis and liquid fermentation. First, the system destroys the microscopic anti-degradation structure of the degradation-resistant biomass solid waste by ICSE treatment, the solid waste can be fully blended with water and rapidly acidified, and the solid retention period is shortened to72 hours; then the biomass is subjected to acid hydrolysis in a bio-acidolysis reactor, an acid hydrolyzate is extracted by a solid-liquid separation device, and a solid substrate is discharged; finally, the acid hydrolyzate is accurately metered into a high-efficiency anaerobic fermentation reactor for liquid fermentation and converted into biogas. In addition, the system has a full automatic feed and discharge function, and creates conditions for unmanned integration of a distributed biogas production device.

Description

Technical field [0001] The invention relates to a biological natural gas production system for steam explosion fermentation of solid biomass, which belongs to the field of biological environment and energy. Background technique [0002] Solid biomass is a type of organic matter that is relatively difficult to degrade. Among them, difficult-to-degrade solid waste represented by various types of straw, garden waste, organic garbage, bagasse, bacterial residue, algae, sludge, etc. is currently in the environmental field. Focus on the direction of research. This kind of solid waste generally has a complete anti-degradation structure, especially under anaerobic conditions, the fermentation decomposition rate is slower. For such substances, pretreatment methods are often used to accelerate the degradation rate. The general method is to mix with feces and strong alkali, and then simply pile and pretreat it, and then feed it into a mixed fermentation tank for anaerobic fermentation. T...

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Problems solved by technology

This overcomes the problems of traditional mixed fermentation that it is difficult to balance gas production efficiency and gas production rate, and it is difficult to isolate the feed and discharge.

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