Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for extracting and separating isopropanol in fermentation alcohol

A technology for fermenting alcohol and isopropanol, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as restricting the development of alcohol export enterprises, and achieve the effect of increasing relative volatility

Active Publication Date: 2015-11-04
太仓海关综合技术服务中心
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These safety requirements restrict the development of alcohol export enterprises

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method for extracting and separating isopropanol in fermented alcohol, adding alkali and extractant to the alcoholic fermentation broth; the alkali is potassium hydroxide; the extractant is ethylene glycol, diethylene glycol, triethylene glycol, and the alkali-containing fermentation broth The volume ratio to extractant is 1:0.5. The concentration of ethanol and isopropanol in the alcoholic fermentation broth is 5g / L. The operation mode of alkaline extraction is intermittent. The addition of potassium hydroxide is 0.1g / L. Among them, the removal rates of protein and bacteria were 89.96% and 99.99%; the recovery rates of ethanol and isopropanol were 96.58% and 95.66%, respectively.

Embodiment 2

[0015] A method for extracting and separating isopropanol in fermented alcohol, adding alkali and extractant to the alcoholic fermentation broth; the alkali is sodium hydroxide; the extractant is ethylene glycol, diethylene glycol, triethylene glycol, and the alkali-containing fermentation broth The volume ratio to extractant is 1:4. The concentration of ethanol and isopropanol in the alcoholic fermentation broth is 300g / L. The mode of operation of alkaline extraction is batch or continuous. The addition amount of sodium hydroxide is 0.2g / L. Among them, the removal rates of protein and bacteria were 92.89% and 99.99%; the recovery rates of ethanol and isopropanol were 97.28% and 96.36%, respectively.

Embodiment 3

[0017] A method for extracting and separating isopropanol in fermented alcohol, adding alkali and extractant to the alcoholic fermentation broth; the alkali is potassium hydroxide; the extractant is ethylene glycol, diethylene glycol, triethylene glycol, and the alkali-containing fermentation broth The volume ratio to the extractant is 1:0.5~1:2. The concentration of ethanol and isopropanol in the alcoholic fermentation broth is 150g / L. The mode of operation of alkaline extraction is batch or continuous. The addition of potassium hydroxide is 0.15g / L. Among them, the removal rates of protein and bacteria were 90.55% and 99.99%; the recovery rates of ethanol and isopropanol were 95.22% and 96.35%, respectively.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for extracting and separating isopropanol in fermentation alcohol. Alkali and an extracting agent are added into alcohol fermentation liquor; the alkali is potassium hydroxide or sodium hydroxide; and the extracting agent is ethylene glycol, diethylene glycol and triethylene glycol, wherein a volume ratio of alkali-containing fermentation liquor to the extracting agent is 1:0.5 to 1:4. According to the method, ethylene glycol potassium achieves the effect of a carrier, so that ethanol in a system is continuously carried out by the ethylene glycol potassium which does not change and only achieves the carrier effect of transferring the ethanol; hydrogen bonding ability formed by the ethylene glycol and ethanol is stronger than that formed by isopropanol and water, so that isopropanol-ethanol relative volatility is greatly improved under the dual effects of alkali and ethylene glycol.

Description

technical field [0001] The invention relates to the field of edible alcohol detection, in particular to a method for extracting and separating isopropanol in fermented alcohol. Background technique [0002] The use of alcohol involves different fields such as medicine and health, food, organic synthesis, solvent, fuel, military industry, and civilian use, and occupies a very important position in the national economy. Alcohol production by fermentation has a long history, and the process control (including cooking, saccharification, fermentation, distillation, etc.) is relatively mature. However, with the frequent occurrence of technical barriers in international trade involving items such as safety and health, the alcohol industry is currently facing severe challenges. More and more safety items appear in contracts and orders for alcohol trade, such as isopropanol, Oxane, dehydrating agent residues (such as benzene, toluene, xylene, cyclohexane), etc. These safety require...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/86C07C31/08C07C31/10
Inventor 宋昌盛曹喜焕
Owner 太仓海关综合技术服务中心
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com