PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE
    61.
    发明申请
    PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE 有权
    生产2,3,3,3-四氯丙烯的方法

    公开(公告)号:US20150011804A1

    公开(公告)日:2015-01-08

    申请号:US14382082

    申请日:2013-02-25

    CPC classification number: C07C17/35 C07C17/206 C07C17/38 Y02P20/582 C07C21/18

    Abstract: The present invention relates, in part, an improved process for the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (1234yf). In certain non-limiting embodiments, the invention relates to methods for improving process efficiency during the fluorination of 1,1,2,3-tetrachloropropene, 2,3,3,3-tetrachloropropene, and/or 1,1,1,2,3-pentachloropropane to 2-chloro-3,3,3-trifluoropropene by separating and recycling unreacted HF, unreacted starting materials, and/or certain pro cess intermediates from the 2-chloro-3,3,3-trifluoropropene product stream.

    Abstract translation: 本发明部分地涉及用于生产某些氢氟烯烃,特别是2,3,3,3-四氟丙烯(1234yf)的改进方法。 在某些非限制性实施方案中,本发明涉及在1,1,2,3-四氯丙烯,2,3,3,3-四氯丙烯和/或1,1,1,2,3-四氯丙烯的氟化期间提高工艺效率的方法 通过从2-氯-3,3,3-三氟丙烯产物流中分离和循环未反应的HF,未反应的起始物质和/或某些过程中间体,将3-五氯丙烷加入到2-氯-3,3,3-三氟丙烯中。

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