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Application of corn and rice in wheat ethanol fermentation process and method for utilizing mixed raw materials for crude material fermentation to product ethanol

A technology of ethanol fermentation and mixed raw materials, applied in fermentation, biofuels, etc., can solve the problems of solid-liquid separation of waste mash, dark color of DDGS, increased production costs, etc., to reduce the loss of nutrients such as starch and improve color , the effect of increasing liquidity

Active Publication Date: 2019-11-19
GUOTOU BIO TECH INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Compared with corn raw material ethanol production, wheat ethanol production has problems such as more foam during liquefaction and fermentation, high viscosity of feed liquid and difficulty in pumping, resulting in high-temperature jet liquefaction and easy clogging. In addition, the by-product DDGS has dark color and other problems. In addition, although raw meal fermentation The technical process is simple, the energy consumption is low, and the product yield is high. However, raw meal fermentation requires that the crushed particle size of starchy raw materials be finer than that of traditional cooking process, which will lead to some increase in electricity consumption and solid waste of waste mash after ethanol distillation. Liquid separation is difficult, increasing production costs

Method used

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  • Application of corn and rice in wheat ethanol fermentation process and method for utilizing mixed raw materials for crude material fermentation to product ethanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] This example is used to illustrate the method provided by the present invention for producing ethanol by fermenting mixed raw materials

[0090] (1) By weight, based on 100 parts by weight of wheat, the amount of corn is 700 parts by weight, and the amount of rice with hulls is 250 parts by weight. The three starchy raw materials are mixed and pulverized together, and the pulverized raw materials are sieved with 20 mesh The rate reaches more than 95%;

[0091] (2) The raw material after pulverizing is mixed with water and the clear liquid of step (6), clear liquid accounts for 10 volume % of batching water, is mixed with the powder slurry that dry matter content is 33 weight %, and the powder slurry temperature of preparation is 60 -63°C;

[0092] (3) carry out pretreatment to above-mentioned slurry, the method of described pretreatment is: with respect to every gram described slurry by dry weight, add acid fungal amylase 20U, acid protease 35U, woody amylase to above-...

Embodiment 2

[0097] This example is used to illustrate the method provided by the present invention for producing ethanol by fermenting mixed raw materials

[0098] (1) By weight, based on 100 parts by weight of wheat, the amount of corn is 300 parts by weight, and the amount of rice with hulls is 130 parts by weight. The three starchy raw materials are mixed and pulverized together, and the pulverized raw materials are sieved with 20 meshes The rate reaches more than 95%;

[0099] (2) mix the pulverized raw material with water and the clear liquid of step (6), the clear liquid accounts for 10% by volume of the batching water, and is mixed with a powder slurry with a dry matter content of 32% by weight, and the prepared slurry temperature is 57 -60°C;

[0100] (3) carry out pretreatment to above-mentioned slurry, the method of described pretreatment is: with respect to every gram described slurry in dry weight, add acid fungal amylase 10U, acid protease 40U, woody amylase to above-mention...

Embodiment 3

[0105] This example is used to illustrate the method provided by the present invention for producing ethanol by fermenting mixed raw materials

[0106] (1) By weight, based on 100 parts by weight of wheat, the amount of corn is 500 parts by weight, and the amount of rice with shells is 200 parts by weight. The three starchy raw materials are mixed and pulverized together, and the pulverized raw materials are sieved with 20 mesh The rate reaches more than 95%;

[0107] (2) mix the pulverized raw material with water and the clear liquid of step (6), the clear liquid accounts for 10% by volume of the batching water, and is mixed with a powder slurry with a dry matter content of 30% by weight, and the prepared slurry temperature is 58 -61°C;

[0108] (3) carry out pretreatment to above-mentioned slurry, the method of described pretreatment is: add acid fungal amylase 30U, acid protease 30U, wood Glycanase 1.5U, pectinase 0.4U, anbactin 15ppm and urea 1.5mmol / L, the pH was adjust...

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Abstract

The invention relates to the field of ethanol production through fermentation, in particular to application of corn and rice in a wheat ethanol fermentation process and a method for utilizing mixed raw materials for crude material fermentation to product ethanol. The method comprises the steps that the mixed raw materials containing a wheat pulverized product, a corn pulverized product and a ricepulverized product are mixed with an ingredient of water for pulp mixing to obtain powder pulp; a liquefaction enzyme is added to the powder pulp, and the powder pulp is liquefied to obtain liquefiedmash; a saccharifying enzyme and nutrients are added to the liquefied mash, yeast is inoculated for fermentation to obtain fermentation broth containing the ethanol, wherein the temperature of pulp mixing and liquefaction is lower than the starch gelatinization temperature of any one of the wheat, corn and rice. According to the method, through the joint crude material fermentation of the corn, rice and wheat, the viscosity of the material liquid can be reduced, the foaming amount in the liquefaction and fermentation process is reduced, and the solid-liquid separation characteristic of waste mash obtained after wheat ethanol distillation and the color and luster of a by-product DDGS are improved.

Description

technical field [0001] The invention relates to the field of ethanol production by fermentation, in particular to the application of corn and rice in the ethanol fermentation process of wheat and a method for producing ethanol by fermenting raw materials with mixed raw materials. Background technique [0002] Biofuel ethanol is ethanol that can be used as fuel made from renewable biomass. Bioenergy represented by it is a national strategic emerging industry related to agriculture, energy, environment and regional economy. In recent years, the development of my country's biofuel ethanol industry is also facing a new development situation. On the one hand, as the price of corn rises, the cost of ethanol production continues to rise, and the cost advantage of using corn as raw material to produce ethanol is getting smaller and smaller; on the other hand, in order to deal with various possible food security risks, my country still needs to actively Do a good job in grain storage...

Claims

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Application Information

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IPC IPC(8): C12P7/06
CPCC12P7/06Y02E50/10
Inventor 俞建良林海龙刘劲松熊强岳国君
Owner GUOTOU BIO TECH INVESTMENT CO LTD
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