Comprehensive recycling method of vinasse

A technology of distiller's grains and alcohol, applied in the field of bioengineering, can solve the problems of low added value, low quality of chemical synthesis, high production cost, etc.

Pending Publication Date: 2021-09-03
于立群
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the existing problems of low added value of distiller's grain utilization, low quality of xylitol chemical synthesis, high production cost, etc., and to provide a method for comprehensive reuse of distiller's grains, specifically using distiller's grains produced after alcoholic fermentation to pass through Bio-fermentation produces natural xylitol, arabitol, dietary cellulose and high-protein feed, so as to achieve comprehensive utilization of distiller's grains, reduce the cost of alcohol production, and provide better low-cost raw materials for the development of xylitol, sustainable, low-cost The purpose of carbon clean production to protect the environment is to provide a new source of raw materials for xylitol products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Embodiment one: what this embodiment records is a kind of method for comprehensive reuse of distiller's grains, and described method is specifically:

[0017] Step 1: The corn alcohol distiller's grains are filtered through a 10-30 mesh sieve (preferably 20 mesh), and the filter cake is corn husk, containing 35% hemicellulose, 30% cellulose, a trace amount of lignin, starch, hydrolyzed by biological enzymes or acid , hemicellulose is hydrolyzed into xylose, arabinose, glucose, filtered through 250-350 mesh filter cloth (preferably 300 mesh) to obtain crude xylose liquid and corn husk residue;

[0018] Step 2: Use crude xylose liquid as the culture medium, insert ZUC220 bacteria, or other bacteria and fungi for fermentation to convert xylose into xylitol, arabinose into arabitol, and other monosaccharides. , glucose, galactose, and mannose are consumed as carbon sources, and the xylose liquid is co-flowed and thickened, and after the fermentation is completed, the fermen...

specific Embodiment approach 2

[0021] Embodiment 2: The method for comprehensive reuse of distiller's grains described in Embodiment 1, the step 1 is specifically: the distiller's grains liquid in the production process of dry corn alcohol is filtered through a 20-mesh sieve, and the filtrate is continuously concentrated to obtain high Protein feed; preparation of corn husk hydrolyzate: add corn husk to a hydrolysis kettle, add dilute sulfuric acid water with 3 to 10 times the weight of corn husk into it, the concentration of sulfuric acid is 0.2%, heat up to 100-120 degrees, keep warm for 2 hours, and filter Removing the insoluble matter to obtain a hydrolyzed solution, the insoluble matter is rinsed and dried to obtain dietary fiber; the obtained liquid hydrolyzed solution is added with CaCO 3 After neutralization, insoluble matter was removed by filtration, and then the crude xylose solution was concentrated by evaporation to 15 wt%. After HPLC analysis, the solid content is as follows:

[0022] ...

specific Embodiment approach 3

[0023] Embodiment 3: The method for comprehensive reuse of distiller's grains described in Embodiment 1, in step 1, the biological enzymatic hydrolysis is specifically: adding corn husks into a hydrolysis kettle, adding corn husks 3-10 times the weight of Water, add 0.2-1wt% corn husk dry weight xylanase with an activity of 5000IU / g, heat up to 40-50 degrees, keep warm for 12-24 hours, then heat up to 100 °C for 30 minutes to inactivate xylan The hydrolase is filtered to remove insoluble matter to obtain a hydrolyzed solution, and the insoluble matter is rinsed and dried to obtain dietary fiber; the hydrolyzed solution is evaporated and concentrated to a crude xylose solution of 15wt%; , after ultrafiltration, the polyxylohydrolase concentrated solution is recycled back to the hydrolysis kettle for repeated use, and the filtrate is evaporated and concentrated to 15wt% crude xylose solution.

[0024] Embodiment 4: The method for comprehensive reuse of distiller's grains describ...

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PUM

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Abstract

The invention discloses a comprehensive reutilization method of vinasse, and relates to the fields of bioengineering technology, alcohol, fermentation, environmental protection, feed and the like. In order to solve the problems of low utilization additional value of vinasse, low quality of xylitol chemical synthesis and the like in the prior art, the method comprises the following steps: filtering the vinasse through a 20-mesh sieve, hydrolyzing corn bran serving as a filter cake by using biological enzyme or acid, and filtering through 300-mesh filter cloth to obtain crude xylose liquid and corn bran residues; taking the crude xylose liquid as a culture medium liquid, inoculating ZUC220 bacteria for fermentation, feeding the crude xylose liquid, and obtaining fermentation liquid of xylitol and arabitol after fermentation is finished; filtering, concentrating, decolorizing, desalting, crystallizing, centrifuging and drying the fermentation liquid, and obtaining xylitol and arabitol; performing alkali washing, rinsing, filtering and drying on the corn bran residues, and obtaining dietary cellulose. According to the method, wastes are recycled, so that useless corn bran in the vinasse is converted into xylitol and cellulose.

Description

technical field [0001] The invention relates to the fields of bioengineering technology, alcohol, fermentation, environmental protection, feed and the like, in particular to a method for comprehensive reuse of distiller's grains. Background technique [0002] Alcohol is a bulk fermented product and plays an important role in people's lives. In recent years, due to human energy shortages and the planet's intensified greenhouse effect, the understanding of the catastrophic consequences of rising temperatures has deepened and become more consistent, plus many gasoline producers and suppliers have advocated in recent years. The use of tertiary butyl cheese (MTBE) has been banned due to harmful health reasons such as pollution of groundwater, and the use of alcohol as a bio-energy part to replace gasoline as a liquid fuel and gasoline as a combustion engine has also become more and more loud. The development of fuel alcohol can not only consume a large amount of starch-containin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/18A23L33/22A23K10/38C12R1/19
CPCC12P7/18A23L33/22A23K10/38C12P2201/00C12P2203/00Y02P60/87
Inventor 于立群
Owner 于立群
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