知搜-全球专利检索

  1. 登录
  2. 注册
发明公开
CN107011113A 联合生产三氟丙烯、四氟丙烯和五氟丙烷的集成方法 无效 - 撤回

联合生产三氟丙烯、四氟丙烯和五氟丙烷的集成方法
摘要：
本申请涉及联合生产三氟丙烯、四氟丙烯和五氟丙烷的集成方法。公开了自单一氯代烃原料240fa起始的联合生产(E)1‑氯‑3,3,3‑三氟丙烯、(E)1,3,3,3‑四氟丙烯和1,1,1,3,3‑五氟丙烷的集成生产方法。该方法包括直接产生(E)1‑氯‑3,3,3‑三氟丙烯（1233zd(E)）的结合的液相或气相反应/提纯操作。在第二液相氟化反应器中，1233zd(E)与HF在催化剂存在下接触以高转化率和选择性反应产生1,1,1,3,3‑五氟丙烷（245fa）。第三反应器用于通过在液相中与苛性碱液接触或在气相中使用脱氟化氢催化剂进行245fa的脱氟化氢以产生(E)1,3,3,3‑四氟丙烯（1234ze(E)）。在该操作后可以进行一个或多个提纯过程以回收该1234ze(E)产物。
摘要（英）：

The invention relates to an integrated process to coproduce trans-1-chloro-3,3,3-trifluoropropene, trans-1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoropropane. Disclosed is an integrated manufacturing process to co-produce (E)1-chloro-3,3,3-trifluoropropene, (E)1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoro-propane starting from a single chlorinated hydrocarbon feed stock, 240fa. The process includes a combined liquid or vapor phase reaction/purification operation which directly produces (E)1-chloro-3,3,3-trifluoropropene (1233zd(E)) from 240fa. In the second liquid phase fluorination reactor 1233zd(E) is contacted with HF in the presence of catalyst to produce 1,1,1,3,3-pentafluoropropane (245fa) with high conversion and selectivity. A third reactor is used for dehydrofluorination of 245fa to produce (E)1,3,3,3-tetrafluoropropene (1234ze(E)) by contacting in the liquid phase with a caustic solution or in the vapor phase using a dehydrofluorination catalyst. This operation may be followed by one or more purification processes to recover the 1234ze(E) product.

0/0