Production technology of starchiness raw material alcohol

A starchy raw material and production process technology, applied in the direction of microorganisms, biofuels, methods based on microorganisms, etc., can solve the problems of loose bacteria pollution control, high emissions, increased power consumption, etc., to reduce distillation power consumption, The effect of reducing the waste of water resources and improving the utilization rate of equipment

Inactive Publication Date: 2011-11-23
HENAN TIANGUAN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. The saccharification process is incomplete saccharification, the saccharification temperature is 58-62°C lower, and the control of bacterial contamination is not strict
[0007] 3. Fermentation with slag is generally used in the fermentation process, and the separation of dregs is carried out after distillation. With the increase of the concentration of fermented mash, the fermented mash becomes more and more viscous, resulting in prolonged fermentation time, and the total sugar and residual sugar of fermented mash On the high side, the power consumption increases, the crude distillation process is affected, and the further improvement of fermentation intensity is limited; and most of them are fermented while saccharifying, and the cycle is 36-48h long; the fermentation intensity is 1.9g / (L·h), and the alcohol content is 11-12 % (v / v)
[0008] 4. The distilled clear liquid is directly discharged, which not only causes waste of residual active ingredients and water resources, but also discharges about 50,000 mg / L of COD, about 30,000 mg / L of BOD, and about 8% of solids. The high discharge volume brings environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Starch raw material alcohol production technique of the present invention is to carry out according to the following steps:

[0027] 1) Crushing and mixing of raw materials: Take starchy raw materials and grind them into particles with a particle size of no more than 0.2mm

[0028] granules, put them into the mixing tank, add water and heat to 60°C for stirring, then add the liquefied enzyme in the way of feeding, so that the liquefied enzyme is evenly dispersed in the slurry mixed with raw materials and water, continue to stir evenly, and make a mixed Slurry, wherein the amount of water added is twice the mass of the pulverized raw material, and the amount of liquefied enzyme added is 10U / g of raw material. In this step, stirring is carried out at a higher temperature, and the liquefying enzyme is added in the way of feeding and sprinkling, which is beneficial to the water absorption and swelling of the starch, reduces the consumption of the liquefying enzyme, shortens...

Embodiment 2

[0037]The production process of starchy raw material alcohol in this embodiment is basically the same as that of Example 1, the difference is only that: the flow rate of liquefying enzyme in step 1) is 12.5U / g to pulverize the raw material; the secondary jet liquefaction time in step 2) is 1.5 h; in step 3), add glucoamylase according to the amount of 180 U / g of raw materials, and the saccharification time is 4 hours; in step 6), the amount of distiller’s sugar added is 40 grams per cubic second saccharification solution, and the incubation time is 7 hours; The fermentation time in step 7) is 33 hours.

Embodiment 3

[0039] The production process of starchy raw material alcohol in this embodiment is basically the same as that of Example 1, the only difference being: the flow rate of the liquefying enzyme in step 1) is 15U / g raw material; the secondary jet liquefaction time in step 2) is 1h; Add glucoamylase according to the amount of 190 U / g of raw materials in 3), and the saccharification time is 2 hours; in step 6), the amount of distiller’s sugar added is 50 grams per cubic second saccharification solution, and the incubation time is 8 hours; step 7) Medium fermentation time is 30h.

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PUM

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Abstract

The invention discloses a production technology of starchiness raw material alcohol. The technology is characterized in that: starchiness raw materials are liquefied and completely saccharified under a relatively high temperature; before fermentation, grain stillage and residual are separated, and the materials are washed; and saccharified liquid with a saccharide density of 25% by mass is fermented. According to the invention, high density mash fermentation is realized, fermentation time is reduced, amounts of total sugar and residual sugar are reduced, and discharging of COD, BOD and solids is reduced. With advantages such as high equipment utilization rate and low steam consumption, the production technology is suitable for the productions of alcohols produced from starchiness raw materials such as wheat, corn, rice, dried sweet potato and cassava.

Description

[0001] technical field [0002] The invention belongs to the technical field of alcohol production, in particular to a starchy raw material alcohol production process. Background technique [0003] In the known technology, most of the industries that utilize starchy raw materials such as wheat and corn to carry out alcohol production adopt [0004] Use thick mash fermentation technology to increase the fermentation intensity so that the enterprise can maximize the production rate, and it has been widely successful and recognized in the alcohol fermentation industry. At present, the process of alcohol production generally includes steps such as raw material crushing-liquefaction-saccharification-fermentation-distillation-segregation, and the main defects are: [0005] 1. Mix the raw materials at a low temperature of 30°C after the raw materials are crushed, and add liquefaction enzyme after the mixing. The starch absorbs water and swells for a short time, which is not conduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06C12P19/14C12R1/865
CPCY02E50/17Y02E50/10
Inventor 韩家林宋峰王景胜康新凯董青山李晓
Owner HENAN TIANGUAN GRP
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