Process for the preparation of pentafluoroethane (r125), chlorotetrafluoroethane (r124), and optionally dichlorotrifluoroethane (rl23), process for preparing a stream of crude product containing pentafluoroethane (r125), chlorotetrafluoroethane (r124) and dichlorotrifluoroethane (r123) preparing a first crude product stream containing pentafluorethane (r125), and a second crude product stream comprising chlorotetrafluoroethane (r124), process for preparing a first raw product stream containing pentafluorethane (r125), a second product stream comprising chlorotetrafluoroethane (r124) and a third stream of crude product comprising dichlorotrifluoroethane (r123), process for the preparation of halogenated ethanes

摘要

"PROCESS FOR THE PREPARATION OF PENTAFLUORETHANE (R125), CHLOROTEFLUETHOREAN (R124), AND OPTIONALLY DICLOROTRIFLUETHETAN (R123), PROCESS FOR PREPARING A CRUTE PROTECTORLETHOREAN PENTAFLUETHOREAN (R123), FOR PREPARATION OF A FIRST RAW PRODUCT CURRENT CONTAINING PENTAFLUORETAN (R125), AND A SECOND CRUTE PRODUCT CURRENT UNDERSTANDING, PROCESS FOR PREPARING A FIRST RAW PRODUCT CURRENT PRODUCT RAW UNDERSTANDING CHLOROTHTRANFLUORETANE (R124) AND A THIRD PRODUCT CURRENT UNDERSTANDING DICLOROTRIFLUORETANE (R123), PROCESS FOR PREPARING HALOGENATED ETHANS ". A process for the preparation of halogenated ethanes, particularly pentafluoroethane, from a mixture produced by the reaction of perchlorethylene, hydrogen fluoride and a recycle stream. The preferred process utilizes phase separation techniques to ensure that the azeotropic amount of HF is included in the product stream, thereby minimizing hydrogen fluoride that is entrained with the desired products after they are separated from the reaction mixture, and while At the same time it prevents unwanted by-products from being recycled for reaction.