发明名称 |
Process for producing 1,3-propanediol |
摘要 |
<p>Disclosed herein is a process for the recovery of 1,3-propanediol from an aqueous feed stream. The present invention involves contacting an aqueous feed stream that comprises water, 1,3-propanediol, and at least one contaminant with at least one solvent extractant to form a mixture. The mixture is separated into a first phase and a second phase. The second phase comprises a majority of the water from the aqueous feed stream. The first phase comprises solvent extractant and at least some of the 1,3-propanediol that was present in the aqueous feed stream. The first phase is removed from the separated second phase and is contacted with at least one hydrophobic solvent to form a second mixture. The second mixture is separated into a third phase and a fourth phase. The third phase comprises the majority of both the solvent extractant and the hydrophobic solvent. The fourth phase comprises 1,3-propanediol and the majority of the water of the first phase. The weight ratio in the fourth phase of 1,3-propanediol to any one contaminant present is greater than the weight ratio of 1,3-propanediol to the same contaminant in the aqueous feed stream prior to the aqueous feed stream being contacted with the solvent extractant.</p> |
申请公布号 |
EP2327464(B1) |
申请公布日期 |
2013.03.13 |
申请号 |
EP20110158112 |
申请日期 |
2004.05.06 |
申请人 |
A.E. STALEY MANUFACTURING COMPANY |
发明人 |
BANIEL, AVRAHAM M.;JANSEN, ROBERT P.;VITNER, ASHER;BAIADA, ANTHONY |
分类号 |
B01D11/00;B01D11/04;C02F1/00;C02F1/26;C02F1/44;C07C29/86;C07C31/18;C12P7/04;C12P7/14 |
主分类号 |
B01D11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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