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Device and method for reducing content of high alcohols in strong-flavor Chinese spirit

A technology of Luzhou-flavor liquor and middle-to-higher alcohol, which is applied in the field of brewing, can solve the problems of unsatisfactory separation of higher alcohol and unsatisfactory retentate wine aroma, etc., and achieve the reduction of higher alcohol, small change in flavor, simple and effective operation Effect

Pending Publication Date: 2021-08-06
JIANGSU JIUMO HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For Luzhou-flavor liquor, the effect of directly using pervaporation permeable membrane to separate higher alcohol from high-alcohol liquor is not ideal
In addition, due to the lack of aroma substances in Luzhou-flavor liquor, when the pervaporation membrane is directly used to separate higher alcohols, other alcohols, aldehydes and ketone aroma substances will also be permeated through the membrane, resulting in the aroma of the retentate wine not meeting the requirements.

Method used

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  • Device and method for reducing content of high alcohols in strong-flavor Chinese spirit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Using the above device, during operation, the original wine with an alcohol content of 40° is diluted with water to form the first diluted wine with an alcohol content of 15°, which passes through the alcohol-permeable membrane module, which consists of four roll-type alcohol-permeable membrane separators connected in parallel , The alcohol-permeable membrane separator includes an alcohol-permeable membrane, which is a composite membrane that preferentially passes through higher alcohols. The base film layer is composed of polyvinylidene fluoride, and the active layer is composed of polydimethylsiloxane, polyvinyl alcohol, and hydrophobic nano-titanium dioxide. . The operating conditions are a temperature of 40 °C, a membrane surface velocity of 0.1 m / s, and a vacuum of 6000 Pa. Higher alcohols in diluted wine permeate the membrane preferentially compared to ethanol, and most of the higher alcohols in the original wine are first enriched on the permeation side of the me...

Embodiment 2

[0059] Using the above device, during operation, the original wine with an alcohol content of 46° is diluted with water to form the first diluted wine with an alcohol content of 18°, which passes through the alcohol-permeable membrane module, which consists of six tubular alcohol-permeable membrane separators connected in parallel , The alcohol-permeable membrane separator includes an alcohol-permeable membrane, which is a composite membrane that preferentially permeates higher alcohols. The base film layer is composed of alumina-zirconia ceramics, and the active layer is composed of polydimethylsiloxane and hydrophobic nano-titanium dioxide. The operating conditions are a temperature of 42°C, a membrane surface velocity of 0.4 m / s, and a vacuum of 5000 Pa. The higher alcohols in the diluted wine permeate the membrane preferentially compared to ethanol, and most of the higher alcohols in the original wine are first enriched on the permeation side of the membrane to form a first...

Embodiment 3

[0061] Using the above device, during operation, the original wine with an alcohol content of 60° is diluted with water to form the first diluted wine with an alcohol content of 30°, which passes through the alcohol-permeable membrane module, which is composed of five roll-type alcohol-permeable membrane separators connected in series The alcohol-permeable membrane separator includes an alcohol-permeable membrane, which is a composite membrane that preferentially passes through higher alcohols. The base film layer is composed of cellulose acetate and polytetrafluoroethylene, and the active layer is composed of polydimethylsiloxane, polyvinyl alcohol, Hydrophobic nano titanium dioxide composition. The operating conditions are a temperature of 45 °C, a membrane surface velocity of 0.5 m / s, and a vacuum of 2500 Pa. The higher alcohols in the diluted wine permeate the membrane preferentially compared to ethanol, and most of the higher alcohols in the original wine are first enrich...

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Abstract

The invention discloses a device and a method for reducing content of high alcohols in strong-flavor Chinese spirit. The method comprises the following steps: diluting raw liquor with water into first diluted liquor with the alcoholic strength of 15-30 degrees; passing the first diluted liquor through an alcohol-permeable membrane assembly to obtain first alcohol-free water on the retentate side and stage 1 penetrant on the permeation side; obtaining stage 2 penetrant on the permeation side until the volume of the stage 1 penetrant reaches 10% of the volume of the first diluted liquor; mixing the first alcohol-free water with the stage 2 penetrant to form second diluted liquor; and then, passing the second diluted liquor through a dehydration membrane to obtain second alcohol-free water on the permeation side and product liquor on the retentate side. The method is simple, effective, easy and convenient to operate, high in yield, and small in liquor loss; and the obtained stage 1 penetrant can be used in other flavoring liquor. Thus, the method is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of brewing, and relates to a device and a method for reducing the content of higher alcohols in Luzhou-flavor liquor. Background technique [0002] my country's liquor can be divided into more than ten types according to the aroma type, and the market share of Luzhou-flavor liquor is as high as 70%. Most of the liquors seen on the market are Luzhou-flavor liquors, which are mainly divided into single-grain Luzhou-flavor liquor represented by Luzhou Laojiao, and multi-grain Luzhou-flavor liquor represented by Wuliangye liquor, which are produced with sorghum as raw materials and Lao Wuzhen. Sulu, Wanyu and Luzhou-flavored liquors with excellent craftsmanship, such as Yanghe Daqu in Jiangsu, Kongjiafu and Daoverjing in Shandong, Kouzijiao in Anhui, Baofeng liquor in Henan, and strong-flavored liquor with sauce represented by Jiannanchun. Alcohols composed of three or more carbon atoms in liquor are collective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12G3/08C12H1/16C12H1/18B01D61/58
CPCC12G3/08C12H1/16C12H1/18B01D61/58
Inventor 丁晓斌孙雪飞沈春香相里粉娟戴萍萍
Owner JIANGSU JIUMO HIGH TECH CO LTD
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