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METHOD FOR EXTRACTING ETHANOL FROM AN ETHANOL-WATER SOLUTION AND SYSTEM FOR EXTRACTING ETHANOL FROM AN ETHANOL-WATER SOLUTION
专利权人:
DYNASEP LLC
发明人:
BRIAN J. WAIBEL,VAL J. KRUKONIS
申请号:
BRPI0811837
公开号:
BRPI0811837A2
申请日:
2008.05.15
申请国别(地区):
BR
年份:
2014
代理人:
摘要:
The present invention provides methods and systems for extracting ethanol from an ethanol-water solution comprising (1) extracting ethanol from an ethanol-water solution with a first solvent comprising an esterified fatty acid, wherein the esterified fatty acid comprises a hydroxylated fatty acid component and an alcohol component such that the alcohol component is a C3-6 alcohol, such that the distribution coefficient for ethanol in the mixture of the ethanol-water solution and the first solvent is at least 0.02 favoring the transfer of ethanol from the ethanol-water solution to the first solvent, thereby extracting the ethanol from the ethanol-water solution into the first solvent, and (2) extracting the ethanol-enriched first solvent with carbon dioxide, such that the carbon dioxide is at a liquid or near supercritical phase, wherein the distribution coefficient for ethanol in a mixture of the first solvent and the carbon dioxide is at least 0.1 favoring the transfer of ethanol from the first solvent to the carbon dioxide.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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