Continuous low-temperature process to produce trans-1-chloro-3,3,3-trifluoropropene
    31.
    发明授权
    Continuous low-temperature process to produce trans-1-chloro-3,3,3-trifluoropropene 有权
    连续低温法生产反式-1-氯-3,3,3-三氟丙烯

    公开(公告)号:US08835700B2

    公开(公告)日:2014-09-16

    申请号:US14195899

    申请日:2014-03-04

    Abstract: Disclosed is process for the production of (E) 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)) by conducting a continuous reaction without the use of a catalyst. Also disclosed is an integrated system including one or more reactors for producing hydrofluoro olefins, particularly 1233zd(E). The manufacturing process includes six major unit operations: (1) a fluorination reaction of HCC-240fa (in continuous or semi-batch mode) using HF with simultaneous removal of by-product HCl and the product 1233zd(E); (2) recycle of unreacted HCC-240fa and HF together with under-fluorinated by-products back to (1); (3) separation and purification of by-product HCl; (4) separation of excess HF back to (1); (5) purification of final product, 1233zd(E); and (6) isomerization of by-product 1233zd(Z) to 1233zd(E) to maximize the process yield.

    Abstract translation: 公开了通过在不使用催化剂的情况下进行连续反应来制备(E)1-氯-3,3,3-三氟丙烯(HCFO-1233zd(E))的方法。 还公开了一种集成系统,其包括用于制备氢氟烯烃的一个或多个反应器,特别是1233zd(E)。 制造过程包括六个主要单元操作:(1)使用HF同时除去副产物HCl和产物1233zd(E)的HCC-240fa(连续或半间歇模式)的氟化反应; (2)将未反应的HCC-240fa和HF与未氟化的副产物一起回收至(1); (3)副产物HCl的分离和纯化; (4)将过量的HF分离回(1); (5)最终产物的纯化,1233zd(E); 和(6)副产物1233zd(Z)异构化为1233zd(E)以使工艺产率最大化。

    HIGH TEMPERATURE ISOMERIZATION OF (E)-1-CHLORO-3,3,3-TRIFLUOROPROPENE TO (Z)-1-CHLORO-3,3,3-TRIFLUOROPROPENE
    37.
    发明申请
    HIGH TEMPERATURE ISOMERIZATION OF (E)-1-CHLORO-3,3,3-TRIFLUOROPROPENE TO (Z)-1-CHLORO-3,3,3-TRIFLUOROPROPENE 有权
    (E)-1-氯代-3,3,3-三氟乙烯与(Z)-1-氯代-3,3,3-三氟苯酚的高温异构化

    公开(公告)号:US20160185692A1

    公开(公告)日:2016-06-30

    申请号:US14886628

    申请日:2015-10-19

    Abstract: Disclosed are processes for a high temperature isomerization reaction converting (E)-1-chloro-3,3,3-trifluoropropene to (Z)-1-chloro-3,3,3-trifluoropropene. In certain aspects of the invention, such a process includes contacting a feed stream with a heated surface, where the feed stream includes (E)-1-chloro-3,3,3-trifluoropropene or mixture of (E)-1-chloro-3,3,3-trifluoropropene with (Z)-1-chloro-3,3,3-trifluoropropene. The resulting product stream includes (Z)-1-chloro-3,3,3-trifluoropropene and (E)-1-chloro-3,3,3-trifluoropropene, where the ratio of (Z) isomer to (E) isomer in the product stream is higher than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another.

    Abstract translation: 公开了将(E)-1-氯-3,3,3-三氟丙烯转化为(Z)-1-氯-3,3,3-三氟丙烯的高温异构化反应方法。 在本发明的某些方面,这种方法包括使进料流与加热的表面接触,其中进料流包含(E)-1-氯-3,3,3-三氟丙烯或(E)-1-氯 -3,3,3-三氟丙烯与(Z)-1-氯-3,3,3-三氟丙烯。 所得产物流包含(Z)-1-氯-3,3,3-三氟丙烯和(E)-1-氯-3,3,3-三氟丙烯,其中(Z)异构体与(E)异构体 在产品流中比进料流高。 产物流中的(E)和(Z)异构体可以彼此分离。

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