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A processing method for producing ethanol by adding distiller's grain liquid and corn

A processing method and clear liquid technology, applied in biochemical equipment and methods, liquid production bioreactors, specific-purpose bioreactors/fermenters, etc., can solve the problem of high loss rate of inorganic acid equipment and difficult handling of corn oil , high corn prices and other issues, to achieve the effect of increasing the saccharification rate, increasing the added value of products, and reducing the saccharification time

Active Publication Date: 2020-01-31
台州中知英健机械自动化有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous consumption of energy, the use of fermentation to produce alcohol gradually replaces petrochemical production of alcohol has become a major trend in the development of biomass energy. Due to the need to deal with aged grains, the technology of using corn as raw material to produce alcohol is the development of China's alcohol industry. However, in the development process of corn alcohol, due to the high content of corn starch, and the corn oil contained in the process is not easy to handle, and the price of corn is high, the cost of producing alcohol is very high. Therefore, in the process of corn fermentation to produce alcohol, the multi-level utilization of raw materials to increase the added value of products and reduce energy consumption is the current research direction in China. Now the most commonly used method in the mainstream production of corn alcohol is to use the five-tower differential pressure Distillation method, for example, Chinese patent CN 1736527 A discloses an alcohol five-tower differential pressure distillation device and its technology. This technology utilizes a number of technology combinations that reuse heat to reduce the steam consumption index and achieve the effect of saving energy and reducing consumption. However, using This method carries out device improvement, is relatively complicated, and the improvement cost is higher, therefore, in corn alcohol processing method, be necessary to solve following several problems (1) through reasonable improvement, further reduce the energy consumption of alcohol production process; (2) corn The processing process of alcohol further increases the added value of products, prolongs the industrial chain, and carries out diversified production; (3) The loss rate of inorganic acid equipment used in the processing process of corn alcohol is large

Method used

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  • A processing method for producing ethanol by adding distiller's grain liquid and corn
  • A processing method for producing ethanol by adding distiller's grain liquid and corn
  • A processing method for producing ethanol by adding distiller's grain liquid and corn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Mix the corn flour slurry after extracting part of the starch with the centrifuged clear liquid of spent distiller's grains discharged from the crude distillation tower to obtain a slurry with a corn starch concentration of 15%; add 10u / g of high-temperature-resistant α-amylase to the slurry Carry out precooking, the precooking temperature is 50°C, and the precooking time is 20 minutes. After the precooking is completed, it is heated to 95°C and maintained for 90 minutes in an aftercooker to obtain liquefied mash; the liquefied mash is pumped into the mash pot for saccharification to obtain mash mash. The amount of glucoamylase added is 200u / g, the saccharification temperature is 50°C, and the saccharification time is 20 minutes. Continuous fermentation is carried out in 5 fermentation tanks to obtain mature mash. g Add activated active dry yeast, after 12 hours of fermentation, divide about 1 / 3 of the mash from the first fermenter to the second fermenter, then refill th...

Embodiment 2

[0045] Mix the corn flour slurry after extracting part of the starch with the centrifuged clear liquid of spent distiller's grains discharged from the crude distillation tower to obtain a slurry with a corn starch concentration of 20%; add 15u / g of high-temperature-resistant α-amylase to the slurry Carry out precooking, the precooking temperature is 60°C, and the precooking time is 30 minutes. After the precooking is completed, it is heated to 105°C and maintained for 120 minutes in an aftercooker to obtain liquefied mash; the liquefied mash is pumped into the mash pot for saccharification to obtain mash mash. The amount of glucoamylase added is 250u / g. The saccharification temperature is 65°C and the saccharification time is 30 minutes. Continuous fermentation is carried out in 10 fermenters to obtain mature mash. g Add activated active dry yeast, after 16 hours of fermentation, divide about 1 / 3 of the mash from the first fermenter to the second fermenter, then refill the firs...

Embodiment 3

[0048]The corn flour slurry after extracting part of the starch is mixed with the centrifuged clear liquid of waste distiller's grains discharged from the crude distillation tower to obtain a slurry with a corn starch concentration of 17%; add 13u / g high temperature resistant α-amylase to the slurry Carry out precooking, the precooking temperature is 55°C, and the precooking time is 25 minutes. After the precooking is completed, it is heated to 100°C and maintained for 110 minutes in an aftercooker to obtain liquefied mash; the liquefied mash is pumped into the mash pot for saccharification to obtain mash mash. The amount of glucoamylase added is 220u / g. The saccharification temperature is 60°C and the saccharification time is 25 minutes. Continuous fermentation is carried out in 8 fermenters to obtain mature mash. g add activated active dry yeast, after 14 hours of fermentation, divide about 1 / 3 of the mash from the first fermenter to the second fermenter, and then refill the ...

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Abstract

The invention relates to an ethyl alcohol processing method, and particularly relates to an ethyl alcohol processing method by clear solution of distillers grain and corn; the method includes steps (1) pretreatment; (2) cooking; (3) saccharification; (4) fermentation; (5) distilling; (6) back recycling treatment of distiller grain. According to the invention, ethyl alcohol is fermented by recycling and using corn powder after starch is extracted; meanwhile, distiller grain is further recycled to produce high protein feed and edible oil; during the whole alcoholic fermentation process, the fermentation technique applies acid-free diastatic fermentation, improved five-tower distilling process and other processes, so as to further reach the purposes of prolonging the industrial chain of ethyl alcohol production by corn, improving the product additional value, saving energy and reducing consumption, reducing cost and improving the economic benefit.

Description

【Technical field】 [0001] The invention relates to an alcohol production process, in particular to a processing method for producing alcohol by adding distiller's grain liquid and corn. 【Background technique】 [0002] With the continuous consumption of energy, the use of fermentation to produce alcohol gradually replaces petrochemical production of alcohol has become a major trend in the development of biomass energy. Due to the need to deal with aged grains, the technology of using corn as raw material to produce alcohol is the development of China's alcohol industry. However, in the development process of corn alcohol, due to the high content of corn starch, and the corn oil contained in the process is not easy to handle, and the price of corn is high, the cost of producing alcohol is very high. Therefore, in the process of corn fermentation to produce alcohol, the multi-level utilization of raw materials to increase the added value of products and reduce energy consumption...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/08C12P19/14C12M1/00
CPCC12M21/12C12M23/58C12M43/02C12P7/08C12P19/14
Inventor 韦李国
Owner 台州中知英健机械自动化有限公司
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