Continuous solid-state fermentation device for preparing fuel ethanol

Abstract

The invention belongs to the technical field of fuel ethanol production through microbial fermentation, in particular to a solid-state fermentation process and a device for preparing fuel ethanol. The process mainly comprises two steps that: strain adding and continuous solid-state fermentation, i.e. fermentation strains are added into fermentation raw materials before crushed materials enter a continuous fermentation tank body, and then, the mixed fermentation materials are continuously fermented in the continuous solid-state fermentation tank so that fermentable sugar is converted into ethanol. The continuous solid-state fermentation is adopted in the invention, the fermentable sugar content in straws can be sufficiently utilized, the use of preservatives is avoided, the yield of the ethanol is improved, the continuous solid-state fermentation device is adopted, the traditional production mode is changed, the continuity of the solid-state fermentation process is really realized, the rotating speed of the fermentation tank body and the plate shoveling angle can be regulated, and the adjustability and the controllability of the production are enhanced.

Description

technical field

[0001] The invention belongs to the technical field of producing fuel ethanol by microbial fermentation. It specifically relates to a solid-state fermentation process and device for producing fuel ethanol, in particular to a continuous solid-state fermentation process and device for producing fuel ethanol based on sugary raw materials. Background technique

[0002] With the development of society, fossil resources have been gradually exhausted, and countries around the world have begun to devote themselves to the research of renewable energy materials, and fuel ethanol, a new green energy that can replace petroleum fuels, has attracted widespread attention at home and abroad. Because its combustion characteristics are very close to those of gasoline, it can be mixed with gasoline in a certain proportion, and can also be used directly as fuel, which greatly reduces the emission of harmful gases and has broad development space.

[0003] Due to the rapid increa...

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