INTEGRATED PROCESS FOR THE CO-PRODUCTION OF TRANS-1-CHLORO-3,3,3-TRIFLUOROPROPENE, TRANS-1,3,3,3-TETRAFLUOROPROPENE, AND 1,1,1,3,3-PENTAFLUOROPROPANE
申请人:Merkel Daniel C.
公开号:US20130261354A1
公开(公告)日:2013-10-03
Disclosed is an integrated process to co-produce trans-1-chloro-3,3,3-trifluoro-propene (1233zd (E)), trans-1,3,3,3-tetrafluoropropene (1234ze (E)), and 1,1,1,3,3-pentafluoropropane (245fa). Overall the co-production is a three-step process. The chemistry involves the steps of:
(1) the reaction of 1,1,1,3-tetrachloropropene and/or 1,1,3,3-tetrachloropropene with anhydrous HF in excess in a liquid-phase catalyzed reactor in such a way as to co-produce primarily 1233zd (E) and 244fa (plus by-product HCl); an optionally
(2) the 244fa stream can then be used to directly produce any (or all) of the following desired products;
(a) the 244fa stream can be dehydrochlorinated to produce the desired second product 1234ze (E); and/or
(b) the 244fa stream can be dehydrofluorinated to produce 1233zd (E) if more of that product is desired; and/or
(c) the 244fa stream can be further fluorinated to form 245fa.
揭示了一种集成工艺,用于共同生产反式-1-氯-3,3,3-三氟丙烯(1233zd(E))、反式-1,3,3,3-四氟丙烯(1234ze(E))和1,1,1,3,3-五氟丙烷(245fa)。总体而言,共生产是一个三步骤的过程。化学涉及以下步骤:(1)1,1,1,3-四氯丙烯和/或1,1,3,3-四氯丙烯与过量无水HF在液相催化反应器中反应,以共同生产主要的1233zd(E)和244fa(加副产物HCl);可选地(2)244fa流可以直接用于生产以下任何(或所有)所需的产品;(a)244fa流可以脱氢氯生成所需的第二产品1234ze(E);和/或(b)如果需要更多的该产品,则可以将244fa流脱氟生成1233zd(E);和/或(c)244fa流可以进一步氟化形成245fa。