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.
本文公开了一种生产含有氢氟烯和氟化氢的共沸组成物的方法,该方法包括:脱氟化至少含有一个相邻碳上的氢和至少一个氟的氢氟碳化物,从而形成包括所述氢氟烯、未反应的氢氟碳化物和氟化氢的混合物,并蒸馏该混合物以产生包含所述氢氟烯和氟化氢的共沸组成物的馏分组成物和包含基本不含氟化氢的所述氢氟碳化物的柱底组成物。本文还公开了从氢氟碳化物和氟化氢中分离氢氟烯的方法。