申请人:Ohno Hiromoto
公开号:US20110112341A1
公开(公告)日:2011-05-12
The present invention provides a process for producing 1,2,3,4-tetrachlorohexafluorobutane having a high purity at a low cost industrially and efficiently. The process for producing 1,2,3,4-tetrachlorohexafluorobutane according to the present invention comprises a step of allowing 1,2,3,4-tetrachlorobutane to react with a fluorine gas to prepare a reaction product containing 1,2,3,4-tetrachlorohexafluorobutane and hydrogen-containing compounds as an impurity, and a step of introducing the reaction product into single or plural distillation columns and distilling to separate the hydrogen-containing compounds from the reaction product and thereby preparing purified 1,2,3,4-tetrachlorohexafluorobutane wherein the at least one of distillation columns has a theoretical plate number of 15 or more.
本发明提供了一种在工业上以低成本高效率生产高纯度的1,2,3,4-四氯六氟丁烷的方法。根据本发明的生产1,2,3,4-四氯六氟丁烷的方法包括以下步骤:允许1,2,3,4-四氯丁烷与氟气反应,制备含有1,2,3,4-四氯六氟丁烷和含氢化合物作为杂质的反应产物;将反应产物引入单个或多个蒸馏塔,并进行蒸馏以将含氢化合物与反应产物分离,从而制备纯化的1,2,3,4-四氯六氟丁烷,其中至少一个蒸馏塔的理论板数为15或更多。