发明名称 |
PROCESO PARA SEPARAR Y RECUPERAR FLUOROCARBUROS Y FLUORURO DE HIDROGENO DE UNA MEZCLA DE LOS MISMOS |
摘要 |
A process for separating and recovering an organic phase (e.g., fluorocarbons such as chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons and perfluorocarbons) from a feed stream of a mixture of fluorocarbons and hydrogen fluoride, wherein the mixture is characterized as forming at least one azeotrope or azeotrope-like composition involving at least one fluorocarbon and hydrogen fluoride, by passing the fluorocarbon/HF mixture feed stream through the feed side of a semipermeable membrane unit and then further separating a fluorocarbon-depleted hydrogen fluoride permeate stream and a fluorocarbon enriched residual stream exiting the membrane unit by conventional distillation. An essentially pure fluorocarbon phase and hydrogen fluoride phase are recovered from the distillation with the azeotrope or azeotrope-like distillate being recycled to the inlet of the semipermeable membrane unit. |
申请公布号 |
MX9205962(A) |
申请公布日期 |
1993.04.01 |
申请号 |
MX19920005962 |
申请日期 |
1992.10.16 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
KUNG HSING LEE;DOMENIC JOSEPH BARSOTTI;EDWARD KAORU SAKATA |
分类号 |
C01B7/19;C07C17/38;C07C19/08 |
主分类号 |
C01B7/19 |
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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