发明名称 |
Separation of R-1233 from hydrogen fluoride |
摘要 |
The invention relates to a process for separating monochloro-trifluoropropenes such as HCFC-1233 from azeotrope or azeotrope like combinations with HF. The process employs a cold, liquid phase separations and multiple azeotropic distillation trains. |
申请公布号 |
US9061958(B2) |
申请公布日期 |
2015.06.23 |
申请号 |
US201414264374 |
申请日期 |
2014.04.29 |
申请人 |
Arkema Inc. |
发明人 |
Wismer John A.;Chen Benjamin Bin |
分类号 |
C07C17/38;C07C17/383;B01D3/36 |
主分类号 |
C07C17/38 |
代理机构 |
|
代理人 |
Boyd Steven D. |
主权项 |
1. A method for producing monochloro-trifluoropropene from an azeotrope or azeotrope like combination of monochloro-trifluoropropene and HF which comprises (a) distilling a reaction mixture comprising hydrogen fluoride, monochloro-trifluoropropene, and hydrogen chloride to remove hydrogen chloride as overhead and a bottoms stream, (b) cooling the bottoms stream to form two liquid phases, (c) separating said two liquid phases in a liquid phase separator into a first light phase comprising hydrogen fluoride in excess over an azeotrope or azeotrope like combination of monochloro-trifluoropropene and hydrogen fluoride and a second heavy phase comprising an excess of monochloro-trifluoropropene over an azeotrope or azeotrope like combination of monochloro-trifluoropropene, (d) distilling said first light phase in a distillation column to produce a top stream of an azeotrope of monochloro-trifluoropropene and hydrogen fluoride and a bottoms stream of hydrogen fluoride, (e) contacting said second heavy phase with an absorbent to remove HF followed by distilling said second heavy phase in a distillation train to provide a monochloro-trifluoropropene stream. |
地址 |
King of Prussia PA US |