Closed cycle technique for producing alcohol in high concentration through fermentation of clear solution

A closed-loop, high-concentration technology, applied in fermentation, biofuels, etc., can solve the problems of large investment, difficult implementation of small and medium-sized alcohol factories, high operating costs, etc., to eliminate serious pollution, improve equipment utilization, and achieve zero emissions Effect

Inactive Publication Date: 2006-11-29
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

These methods all have the problems of large investment and high operating costs, which are difficult to implement for small and medium-sized alcohol factories.

Method used

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  • Closed cycle technique for producing alcohol in high concentration through fermentation of clear solution

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Embodiment 1

[0021] In the embodiment of the present invention, the starchy raw material is industrial starch: 180g is mixed with distilled waste mash and 800ml of tap water for pulping; then heated for liquefaction and saccharification, the liquefaction and saccharification methods are not limited, but the double-enzyme continuous jet liquefaction process is the best Excellent, liquefaction temperature: 95°C, liquefaction holding time: 60 minutes, add 12U of high temperature resistant enzyme α-amylase per gram of starch during liquefaction, quickly cool down to 62°C, add 180U of glucose per gram of starch during saccharification Enzyme, saccharification for 12 hours; after saccharification, the temperature is raised to 80°C, and the solid-liquid separation operation is performed by filtration while it is hot, to remove yeast, coagulated protein and other insoluble solids in the sugar solution. The solid-liquid separation method is not limited, but requires Can obtain clear sugar solution 8...

Embodiment 2

[0024] In the embodiment of the present invention, 1700 g of corn endosperm powder is taken as the starchy raw material, 4500 ml of the previous batch of distillation waste liquid is added, 14 U of high-temperature-resistant α-amylase is added per gram of starch, heated after stirring, and liquefied at 95 ° C for 50 minutes in vacuum flash evaporation; Rapidly cool down to 62°C, add 200U of glucose glucoamylase per gram of starch, keep warm at 62°C for saccharification for 9 hours, heat up to 80°C after saccharification, and filter while hot to obtain 4725ml of clear sugar solution with a sugar concentration of 25.9% (w / w ); the clear sugar solution was divided into two parts, one part was diluted with water to a sugar concentration of 16% (w / w), cooled to 32°C, and 8% (v / v) of expanded alcoholic yeast was added for constant temperature culture and fermentation, and the other Part of the sugar solution is concentrated to 36.5% (w / w), and the concentrated sugar solution is added...

Embodiment 3

[0026] In the embodiment of the present invention, the starchy raw material takes 7800kg of low-fat corn flour, and adds 24m of the last batch of distillation waste liquid 3 , add 16U high-temperature-resistant α-amylase per gram of starch, heat evenly after stirring, keep warm at 95°C for liquefaction for 50 minutes, and vacuum flash evaporate; quickly cool down to 62°C, add 220U glucose glucoamylase per gram of starch, keep warm at 62°C for saccharification for 9 After saccharification, the temperature was raised to 80°C, filtered while hot, and 23.4m of clear sugar solution was obtained. 3 , sugar concentration 26.3% (w / w); the clear sugar solution is divided into three parts, one part is diluted with distillation waste liquid and water to a sugar concentration of 16% (w / w), cooled to 32°C, and 8% (v / v) is fermented by the expanded cultivation of alcoholic yeast, and the other two portions of clear sugar liquid are concentrated to 34% (w / w), and the concentrated sugar liqu...

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Abstract

A closed-loop process for preparing high-concentration alcohol includes pulverizing starch material, mixing it with the rejected distilled liquid, heating, liquefying, saccharifying, solid-liquid separation to obtain clear saccharide solution, inoculating yeast, ferment, distilling to obtain alcohol and distilled liquid, and cyclic use of the rejected distilled liquid.

Description

technical field [0001] The invention relates to a closed-circuit circulation process for producing high-concentration alcohol by fermenting clear liquid, specifically selecting starchy raw materials and waste mash to ferment and produce alcohol, and belongs to the technical field of food fermentation processing. Background technique [0002] Fermentation of starchy raw materials to produce alcohol is one of the main methods of alcohol production. Before the present invention was made, in the process of producing alcohol by fermentation of traditional starchy raw materials, the starchy raw materials were pulverized, mixed with water, cooked for liquefaction and slightly saccharified, and then inoculated with alcoholic yeast for fermentation (as introduced in the book "Alcohol Industry Handbook", Edited by Zhang Kechang and others, Light Industry Press). This traditional fermentation process has the following characteristics: [0003] 1. A high saccharification rate is not r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/06
CPCY02E50/17Y02E50/10
Inventor 毛忠贵段作营张建华李永飞
Owner JIANGNAN UNIV
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