Method for preparing fuel ethanol with sweet Chinese sorghum stem slag after solid fermentation by enzyme hydrolysis process

A technology for solid fermentation and fuel ethanol, which is applied in the field of biological fermentation of biomass and can solve problems such as environmental pollution and increased operating costs.

Inactive Publication Date: 2008-03-12
王孟杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the existing data, domestic and foreign processes for producing ethanol from cellulose must first pretreat the raw materials, and then carry out enzymatic hydrolysis, which increases operating costs. If the acid used for pretreatment is not treated, it will also cause environmental damage Pollution

Method used

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Examples

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Embodiment Construction

[0012] The stalk residue of sweet sorghum after solid fermentation is hydrolyzed by enzyme to obtain pentose and hexose liquid, and then the pentose and hexose are co-fermented to produce fuel ethanol.

[0013] Through coarse material cultivation, highly active cellulase is decomposed, which greatly reduces the cost of cellulase. From the perspective of plant fiber hydrolysis, the sweet sorghum stalk solid fermentation residue is a loose material, and the sweet sorghum stalk residue contains 39.7% cellulose, 24.4% pentosan, and 22.54% lignin.

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PUM

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Abstract

The invention relates to a fermentation process for biologic mass, in particular to a process for making fuel alcohol by the solid fermented sweet kaoliang stem residues through a enzyme hydrolysis method. Cellulose enzyme of high activity is dissolved by culturing the raw materials. The semi cellulose hydrolysis is combined with the enzyme hydrolysis. The pentose and hexose are fermented together to improve the yield of alcohol. Except for a method of synthesizing, starch, natural sugar fluid and fiber are the three raw materials for producing alcohol. And the sweet kaoliang is a hi-energy crop integrating these three raw materials. The invention is the extension of prior process for making fuel alcohol by the solid fermented sweet kaoliang stem sugar juice, explores a way for making fuel alcohol by sweet kaoliang cellulose with reduced cost and environmental pollution.

Description

technical field [0001] The invention relates to a bio-fermentation process of biomass, in particular to prepare fuel ethanol by enzymatic hydrolysis of sweet sorghum stalk residue after solid fermentation. Background technique [0002] Since the supply of aged grains in my country can no longer meet the needs of fuel ethanol production, the development and utilization of biomass raw materials to diversify the raw materials for fuel ethanol production is the only way to develop my country's fuel ethanol production in the future. In order to solve the problem of raw material supply of fuel ethanol, the hydrolysis of plant fiber to produce fuel ethanol has become one of the most challenging frontier projects in the world today. [0003] Canadian company IOGEN has always been in the international leading position in the production technology of cellulosic fuel ethanol. In 2004, the company used wheat straw and wood processing residues as raw materials, adopted pretreatment and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/02C12P7/08
Inventor 王孟杰
Owner 王孟杰
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