-
1.发明授权VAPOR PHASE PRODUCTION OF 1,1,1,2,3,3,3-HEPTAFLUOROPROPANE FROM HYDROGEN FLUORIDE AND HEXAFLUOROPROPYLENE 有权的1,1,1,2,3,3,3-七氟丙烷氟化氢和六氟丙烯气相生产
公开(公告)号：EP1463696B1
公开(公告)日：2015-06-24
申请号：EP02782258.4
申请日：2002-10-31
CPC分类号： C07C17/38 , C07C17/087 , C07C17/383 , C07C19/08
-
2.发明授权
公开(公告)号：EP1611055B1
公开(公告)日：2008-05-28
申请号：EP04750024.4
申请日：2004-04-08
IPC分类号： C01B21/083
CPC分类号： C01B21/0837 , C01P2006/80
摘要： Disclosed is a distillation process for reducing the concentration of impurities dinitrogen difluoride and dinitrogen tetrafluoride in nitrogen trifluoride. The process comprises: (a) distilling a mixture comprising nitrogen trifluoride and dinitrogen difluoride and/or dinitrogen tetrafluoride in a distillation column in the presence of a compound having a higher normal boiling point than nitrogen trifluoride; (b) removing a mixture comprising dinitrogen difluoride and/or dinitrogen tetrafluoride as a sidedraw from the distillation column; (c) removing a mixture comprising the compound having a higher normal boiling point than nitrogen trifluoride from the bottom of the distillation column; and (d) removing a nitrogen trifluoride product having reduced concentration of dinitrogen difluoride and/or dinitrogen tetrafluoride from the top of the distillation column.
-
3.发明公开VAPOR PHASE PRODUCTION OF 1,1,1,2,3,3,3-HEPTAFLUOROPROPANE FROM HYDROGEN FLUORIDE AND HEXAFLUOROPROPYLENE 有权的1,1,1,2,3,3,3-七氟丙烷氟化氢和六氟丙烯气相生产
公开(公告)号：EP1463696A2
公开(公告)日：2004-10-06
申请号：EP02782258.4
申请日：2002-10-31
CPC分类号： C07C17/38 , C07C17/087 , C07C17/383 , C07C19/08
摘要： A process for the production of HFC-227ea from HF and HFP is provided. This process takes advantage of an azeotropic composition of HF and HFC-227ea in order to produce HFC-227ea essentially free of HF and recycle unreacted HF back to the reactor. The recycle of said azeotropic composition, also allows the use of HFC-227ea as a diluent to aid in control of reactor temperature for a highly exothermic reaction.
-
-
搜索结果
3 条记录 (耗时 0.012 秒)
