Method for producing alcohol through liquor fermentation

A clear liquid and alcohol technology, applied in fermentation, biofuel and other directions, can solve the problems of increased content of fermentation by-products, contamination of bacteria, and reduced starch utilization rate, and achieves the goal of reducing the production of fermentation by-products, exuberant metabolism, and reducing losses. Effect

Inactive Publication Date: 2013-11-06
HENAN TIANGUAN GRP
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Problems solved by technology

[0004] In the existing technology of clear liquid fermentation to produce alcohol, as the patent No. ZL03126892 "Method for producing alcohol by clear liquid fermentation" and the patent No. ZL200410066017 "A closed cycle process for producing high-concentration alcohol by clear liquid fermentation", often Solid-liquid separation begins after liquefaction and saccharification, and clear liquid fermentation and d

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  • Method for producing alcohol through liquor fermentation

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Example Embodiment

[0016] Example 1

[0017] The present embodiment is the experimental data of the small test. The mixed raw materials of cassava, sorghum and wheat are used, and tap water is used for batching. The process steps include:

[0018] a. Take 50g of tapioca flour, 50g of sorghum flour, 50g of wheat flour, and crushed particle size of 50 meshes, put them into a 1000ml conical flask, add 225ml of tap water, stir evenly with a glass rod, adjust the pH of the slurry to 5.5 with NaOH, and add 11u of amylase / g dry material, stir evenly, put it into a constant temperature water bath for heating, and keep it at 86°C for 3 hours of liquefaction. Repeat three parallel samples;

[0019] b. Filter with a 90-mesh filter cloth and press manually, cool the clear liquid to 28°C, add 120 u / g dry material of saccharification enzyme, inoculate 0.2g dry yeast, and ferment at a constant temperature of 28°C for 50 hours. Distillation is carried out to produce alcohol, and fermentation indicators such ...

Example Embodiment

[0022] Example 2

[0023] The present embodiment is the experimental data of the small test. The mixed raw materials of cassava, corn and wheat are used, and tap water is used for batching. The process steps include:

[0024] a. Take 50g of tapioca flour, 50g of corn flour, 50g of wheat flour, crushed to 50 mesh, put into a 1000ml conical flask, add 380ml of tap water, stir evenly with a glass rod, adjust the pH of the slurry to 6.0 with NaOH, and add 13u of amylase / g dry material, stir evenly, put it into a constant temperature water bath for heating, and liquefy at 93°C for 2.6h. Repeat three parallel samples;

[0025] b. Filter with a 90-mesh filter cloth and squeeze by hand, cool the clear liquid to 33°C, add 190 u / g of saccharification enzyme dry material, inoculate 0.3g dry yeast, 33°C constant temperature cultivation and fermentation for 40h fermentation is complete, the mature mash after fermentation is completed Distillation is carried out to produce alcohol, and f...

Example Embodiment

[0028] Example 3

[0029] The present embodiment is the experimental data of the small test. The mixed raw materials of potato and sorghum are used, and tap water is used for batching. The process steps include:

[0030] a. Take 75g of potato flour and 75g of sorghum flour with a crushing size of 50 mesh, put them into a 1000ml conical flask, add 525ml of tap water, stir evenly with a glass rod, adjust the pH of the slurry to 6.5 with NaOH, add 17u / g of amylase to dry After stirring evenly, put it into a constant temperature water bath for heating, and liquefy at 100°C for 2h. Repeat three parallel samples;

[0031] b. Filter with a 90-mesh filter cloth and press manually, cool the clear liquid to 36°C, add 250u / g of saccharification enzyme dry material, inoculate 0.5g of dry yeast, 36°C constant temperature cultivation and fermentation for 30h and the fermentation is completed, and the mature mash after the fermentation is completed. Distillation produces alcohol, and tests ...

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Abstract

The invention discloses a method for producing alcohol through liquor fermentation. The method comprises the steps of performing solid-liquid separation on liquefied starchy raw materials to obtain liquor and solid residues, and adding glucoamylase and yeast to the liquor for alcohol fermentation; adding water to the solid residues for saccharification processing, performing solid-liquid separation again to obtain sugary washing water and waste residues, wherein the sugary washing water can be used for preparation or cultivation and fermentation of the yeast, and the waste residues can be produced into fertilizers and feeds or used for biogas fermentation. According to the method, the alcohol content of prepared fermented mature mash exceeds 15.2% (v/v), the residual total sugar can be lower than 1.03%, the content of residues and starch is lower than 2.91%, and the utilization rate of starch can reach above 96.5%; the liquor obtained through mash liquidation is not easy to contaminate and does not produce high glucose suppression in a fermentation process, fermentation by-products are reduced, equipment wear can be reduced obviously, and the utilization rate and the distillation efficiency of fermentation equipment can be improved.

Description

technical field [0001] The invention relates to the technical field of alcohol production, in particular to a method for producing alcohol by clear liquid fermentation. Background technique [0002] Alcohol is widely used in food, chemical medicine, dyestuff, national defense and other industries. Alcohol can be used not only as a fuel, but also as a strategic material. 2 / 3 of the alcohol in the world is used as fuel. The development of alcohol can not only promote the sustainable development of agriculture, but also can be used as clean energy to replace gasoline or gasoline additives, reduce industrial air pollution, protect the environment, and relieve the pressure of crude oil imports. my country's alcohol fermentation industry has a history of about 100 years. The ancient alcohol industry has been favored in recent years because of its laurels of green energy. Alcohol, as a renewable strategic resource, has become a key industrial product developed by the country. Alc...

Claims

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Application Information

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IPC IPC(8): C12P7/06
CPCY02E50/17Y02E50/10
Inventor 张建博杜风光孙沛勇周鹏黄玉涛
Owner HENAN TIANGUAN GRP
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