Process for production of azeotrope compositions comprising hydrofluoroolefin and hydrogen fluoride and uses of said azeotrope compositions in separation processes
申请人:E. I. du Pont de Nemours and Company
公开号:US07897823B2
公开(公告)日:2011-03-01
Disclosed herein is a process to produce an azeotrope composition comprising a hydrofluoroolefin and hydrogen fluoride, said process comprising, dehydrofluorinating a hydrofluorocarbon containing at least one hydrogen and at least one fluorine on adjacent carbons, thereby forming a mixture comprising said hydrofluoroolefin, unreacted hydrofluorocarbon and hydrogen fluoride, and distilling the mixture to produce a distillate composition comprising an azeotrope composition containing said hydrofluoroolefin and hydrogen fluoride and a column bottoms composition comprising said hydrofluorocarbon essentially free of hydrogen fluoride. Also disclosed herein are processes for separation of hydrofluoroolefins from hydrofluorocarbons and from hydrogen fluoride.
PROCESSES FOR PRODUCTION AND PURIFICATION OF HYDROFLUOROOLEFINS
申请人:MILLER RALPH NEWTON
公开号:US20110118512A1
公开(公告)日:2011-05-19
Disclosed herein are processes for the production of hydrofluoroolefins by dehydrofluorination. Also disclosed herein are processes for separation of hydrofluoroolefins from hydrofluorocarbons and from hydrogen fluoride.
本文揭示了通过脱氟制备氢氟烯的过程。同时,还揭示了从氢氟碳化物和氢氟酸中分离氢氟烯的过程。
Process for preparing fluorine-containing carboxylic acid ester