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Alcohol production method by taking sugariness raw material as fermentation substrate

A production method and sugar technology, applied in the field of biomass liquid fuel processing, can solve the problems of large area of ​​waste water treatment projects, high waste water treatment costs, hidden dangers of environmental pollution, etc., so as to achieve water-saving production and eliminate environmental pollution. Hidden dangers and the effect of reducing production costs

Inactive Publication Date: 2013-08-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the waste water treatment project occupies a large area and has high infrastructure costs. On the other hand, the cost of waste water treatment is high, and it is difficult to completely treat it, which brings great hidden dangers to environmental pollution.

Method used

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  • Alcohol production method by taking sugariness raw material as fermentation substrate

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A kind of alcohol production method using sugary material as fermentation substrate, adopts following steps:

[0027] (1) Raw material storage: Take 16 tons of sweet sorghum stalks and dry them naturally to control their water content to 20%;

[0028] (2) Crushing: crushing the sweet sorghum stalks with a water content of 20% in (1);

[0029] (3) Moisture adjustment: Add 6 tons of distilled waste water and 4 tons of fresh water to the crushed material obtained in (2), and adjust the moisture content of the material to 70%;

[0030] (4) Alcoholic fermentation: Mix the cultured yeast seed liquid with the material obtained in (3) at a ratio of 15% (v / m) and carry out alcoholic fermentation; the moisture content of the fermented material is 74%, and the fermentation temperature is 28°C, fermentation time 30 hours; (5) Obtaining and using distillation waste water: After alcohol fermentation, after distillation and rectification, 1 ton of fuel ethanol with an ethanol content...

Embodiment 2

[0033] A kind of alcohol production method using sugary material as fermentation substrate, adopts following steps:

[0034] (1) Material moisture control: take 8 tons of sweet sorghum stalks and 8 tons of sugarcane, and control their moisture content to remain unchanged;

[0035] (2) Pulverization: Add 7.25 tons of distillation waste liquid and fresh water to the sweet sorghum stalks with a moisture content of 70% in (1), adjust the moisture content of the pulverized materials to 84.3%, and pulverize;

[0036] (3) Alcoholic fermentation: Mix 1.5 tons of cultured yeast seed liquid with the material obtained in (3) and carry out alcoholic fermentation; the moisture content of the fermented material is 85%, the fermentation temperature is 30°C, and the fermentation time is 16 hours ;

[0037] (4) Acquisition and use of distillation wastewater: After alcoholic fermentation, 1 ton of industrial alcohol with an ethanol content of 99.5% (v / v) and 30 tons of distiller's grains with ...

Embodiment 3

[0040] A kind of alcohol production method using sugary material as fermentation substrate, adopts following steps:

[0041] (1) Material moisture control: Take 16 tons of sugarcane and reduce its moisture content to 50%;

[0042] (2) Crushing: crushing the sugarcane stalks with a water content of 50% in (1);

[0043] (3) Moisture adjustment: Mix 1 ton of the cultured yeast seed liquid and 1.4 tons of distillation waste liquid, and then mix with the pulverized material to adjust the water content of the material to 60%;

[0044] (4) Alcoholic fermentation: send the mixed materials into the fermenter for alcoholic fermentation; the fermentation temperature is 40°C, and the fermentation time is 24 hours;

[0045] (5) Obtaining and using distillation wastewater: After alcoholic fermentation, 1 ton of industrial alcohol with an ethanol content of 99.5% (v / v) and 9.8 tons of distiller's grains with a water content of 74% are obtained after distillation and rectification. The dist...

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Abstract

The present invention relates to an alcohol production method by taking sugariness raw material as fermentation substrate, which includes: smashing the stored raw materials; adjusting the moisture of the smashed material by taking anaerobic wastewater as a moisture modulator; accessing well-cultivated yeast seed liquid and blending the liquid with the material for alcohol fermentation; distilling to get crude alcohol and a vinasse after fermentation; squeezing the vinasse; putting the obtained distilled wastewater into the smashed material for moisture modulation; accessing well-cultivated yeast seed liquid for alcoholic fermentation, and perform the next steps in cycle. In the present invention, the distilled wastewater is used as moisture modulator of the materials, which can significantly reduce water consumption in solid alcohol fermentation, and can realize zero discharge of wastewater to achieve significant environmental and economic benefits.

Description

technical field [0001] The invention relates to an alcohol production method using sugary raw materials as fermentation substrates, and belongs to the technical field of biomass liquid fuel processing. Background technique [0002] Due to the non-renewability of petrochemical resources and the consideration of environmental protection, all countries in the world are committed to the development of renewable energy to replace the current petrochemical resources. Among the many renewable energy sources, fuel ethanol is a more practical choice. [0003] In consideration of food security, countries are actively promoting the production of non-grain fuel ethanol. Among many candidate raw materials, sugary raw materials (such as sweet sorghum, sugarcane, sugar beet, etc.) are a potential choice. There are two main processes for producing ethanol from sweet sorghum stalks: solid-state fermentation and liquid-state fermentation. The liquid fermentation method must squeeze the jui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06C12R1/865
CPCY02E50/10
Inventor 李十中张成明李纪红仉磊
Owner TSINGHUA UNIV
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