Method for ecologically producing alcohol by taking tuberous crop as raw material

A manufacturing method and a technology for raw materials, applied in the field of alcohol ecological manufacturing, can solve problems such as alcohol pollution, and achieve the effects of eliminating the problem of large land occupation, saving water resources, and eliminating high-concentration wastewater pollution.

Inactive Publication Date: 2011-02-16
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, eliminate the coordination problem existing in the coupling of alcohol and biogas double fermentation, ensure the normal and stable operation of alcohol and biogas fermentation, thereby realizing zero discharge of high-concentration wastewater in the alcohol manufacturing process, and solving the problem The pollution problem of alcohol production by fermentation method, while saving a lot of precious water resources

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  • Method for ecologically producing alcohol by taking tuberous crop as raw material
  • Method for ecologically producing alcohol by taking tuberous crop as raw material

Examples

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Embodiment 1

[0037] Embodiment one: a kind of alcohol ecological production method using potatoes as raw material adopts the following process steps:

[0038] The raw material is dried cassava. The dried cassava is crushed and passed through a 30-mesh sieve. According to the ratio of feed water mass ratio of 1:3, the previous batch of degassed biogas slurry was added. During the mixing process, the pH of cassava starch slurry was adjusted to 6.2 with sulfuric acid, and then commercial high-temperature-resistant α-amylase was added. The amount of amylase added is 10u / g starch. After the mixing, the starch slurry was cooked at 105°C for 45 minutes to fully liquefy the starch. After cooking and liquefaction, the liquefied liquid is rapidly cooled down to 30°C, and then commercial glucoamylase is added. The amount of glucoamylase added is 100u / starch. Insert the cultured yeast seed liquid to start fermentation, and the inoculum amount of the yeast seed liquid is 10% of the volume of the li...

Embodiment 2

[0041] Embodiment two: a kind of alcohol ecological production method using potatoes as raw material adopts the following process steps:

[0042] Using fresh cassava as raw material, spray and wash the fresh cassava with water to remove the sediment on the surface of the cassava, then crush it, and pass it through a 20-mesh sieve. The degassed biogas slurry was added according to the ratio of material to water mass ratio of 1:1.5. During the mixing process, sulfuric acid was used to adjust the pH of cassava starch slurry to 6.6, and commercial high-temperature-resistant α-amylase was added. The amount of amylase added is 12u / g starch. The starch slurry after mixing was steamed at 105°C for 60 minutes to fully liquefy the starch. After cooking and liquefaction, cool the liquefied liquid to 28°C, and then add commercial glucoamylase in an amount of 150u / starch. Insert the cultured yeast seed liquid to start fermentation, and the inoculum amount of the yeast seed liquid is 12% ...

Embodiment 3

[0045] Embodiment three: a kind of alcohol ecological production method using potatoes as raw material adopts the following process steps:

[0046] Using dried sweet potato as raw material, crush the dried sweet potato and pass through a 40-mesh sieve. Add the degassed biogas slurry mixing material according to the ratio of feed water mass ratio of 1:3, adjust the pH of cassava starch slurry to 5.6 with sulfuric acid in the mixing process, add commercial high temperature resistant α-amylase, the amount of amylase added is 8u / g starch, cook at 105°C for 120 minutes to fully liquefy the starch; after cooking and liquefaction, cool the liquefied liquid to 28°C, then add commercial glucoamylase, the amount of glucoamylase added is 80u / starch; The cultured yeast seed liquid starts to ferment, and the inoculum amount of the yeast seed liquid is 8% of the volume of the liquefied liquid. After the alcoholic fermentation is finished, the fermented liquid is distilled to obtain the fin...

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Abstract

The invention discloses a method for ecologically producing alcohol by taking a tuberous crop as a raw material. The method comprises the following steps of: grinding the tuberous crop raw material; adding biogas slurry into the ground tuberous crop raw material according to a specific material-to-liquid mass ratio and mixing; adding liquefying enzyme, heating, boiling and liquefying; cooling, adding saccharifying enzyme and inoculating yeast for direct fermentation; and after fermentation is finished, distilling so as to obtain the alcohol. Processes such as two-stage marsh gas fermentation, solid and liquid separation, degassing and the like are performed on distilling waste liquor so as to obtain byproducts such as distilled grains, marsh gas, sludge and the like and the biogas slurry is recycled in a mixing process. In the method, a microorganism ecological food chain comprising alcohol yeast, marsh gas bacteria and the like is constructed, so that the dual-fermentation coupling of the alcohol and the marsh gas is realized, aeration treatment with large floor area and high operating cost is eliminated and the problem of pollution caused by high-concentration waste water produced by the conventional fermentation alcohol production is solved.

Description

technical field [0001] The invention relates to an alcohol ecological production method using potatoes as raw materials, specifically coupling alcohol fermentation and biogas fermentation to form a microbial ecological food chain and realize zero discharge of high-concentration waste water from potato alcohol production, which belongs to the technology of fermented food industry field. Background technique [0002] Fuel alcohol is currently the main and the largest biomass energy. Restricted by my country's national conditions of more people, less land and tight food balance, the production of ethanol from potatoes will be the main way to develop biomass energy in my country. However, the pollution of a large amount of distillation waste liquid produced during the production of potato ethanol has also become a bottleneck restricting its further development. [0003] The conventional method to solve the pollution problem of alcohol distillation waste liquid is to adopt the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06C12P5/02C12R1/865C12P19/14
CPCY02E50/17Y02E50/343Y02E50/10Y02E50/30
Inventor 张宏建张建华毛忠贵
Owner JIANGNAN UNIV
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