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    • 2. 发明申请
    • PROCESS FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE
    • 制备2,3,3,3-四氯丙烯的方法
    • WO2010050373A3
    • 2010-11-25
    • PCT/JP2009067971
    • 2009-10-13
    • DAIKIN IND LTDNOSE MASATOSHITAKAHASHI KAZUHIROKOMATSU YUZOSUGIYAMA AKINARISHIBANUMA TAKASHI
    • NOSE MASATOSHITAKAHASHI KAZUHIROKOMATSU YUZOSUGIYAMA AKINARISHIBANUMA TAKASHI
    • C07C17/087C07C17/25C07C17/383C07C21/18
    • C07C17/25C07C17/087C07C17/383C07C21/18Y02P20/582C07C21/22
    • The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene comprising the steps of: (a) reacting 3,3,3-trifluoropropyne with hydrogen fluoride while heating to obtain a product containing 2,3,3,3-tetrafluoropropene; (b) separating the product obtained in Step (a) into Component A containing 2,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropyne, and Component B containing 1,3,3,3-tetrafluoropropene; (c) separating 2,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropyne contained in Component A obtained in Step (b) into each compound; (d) conducting a dehydrofluorination reaction by heating Component B obtained in Step (b) in the presence of a catalyst; (e) separating the product obtained in Step (d) into Component C containing 2,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropyne, and Component D containing 1,3,3,3-tetrafluoropropene; (f) separating 2,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropyne contained in Component C obtained in Step (e) into each compound; and (g) conducting a dehydrofluorination reaction by heating Component D obtained in Step (e) in the presence of a catalyst. The present invention provides an effective and industrially applicable process for preparing 2,3,3,3-tetrafluoropropene.
    • 本发明提供一种制备2,3,3,3-四氟丙烯的方法,包括以下步骤:(a)在加热的同时使3,3,3-三氟丙炔与氟化氢反应,得到含有2,3,3,3-四氟丙烯的产物 -tetrafluoropropene; (b)将步骤(a)中获得的产物分离成含有2,3,3,3-四氟丙烯和3,3,3-三氟丙炔的组分A,以及含有1,3,3,3-四氟丙烯的组分B; (c)将步骤(b)中获得的组分A中所含的2,3,3,3-四氟丙烯和3,3,3-三氟丙炔分离成各化合物; (d)通过加热步骤(b)中获得的组分B在催化剂存在下进行脱氟化氢反应; (e)将步骤(d)中获得的产物分离成含有2,3,3,3-四氟丙烯和3,3,3-三氟丙炔的组分C,以及含有1,3,3,3-四氟丙烯的组分D; (f)将步骤(e)中获得的组分C中所含的2,3,3,3-四氟丙烯和3,3,3-三氟丙炔分离成各化合物; 和(g)通过加热在步骤(e)中获得的组分D在催化剂存在下进行脱氟化氢反应。 本发明提供了制备2,3,3,3-四氟丙烯的有效和工业上适用的方法。
    • 10. 发明公开
    • METHOD FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE
    • VERFAHREN ZUR HERSTELLUNG VON 2,3,3,3-TETRAFLUORPROPEN
    • EP3020695A4
    • 2017-03-15
    • EP14823042
    • 2014-07-08
    • DAIKIN IND LTD
    • CHAKI TAKEHIROTAKAHASHI KAZUHIROTAKAKUWA TATSUYA
    • C07C17/20C07C17/25C07C21/18
    • C07C17/087C07C17/202C07C17/206C07C17/25C07C17/383Y02P20/582C07C21/18C07C19/10
    • This invention provides a method for producing 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, in two or three reaction steps, using at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3-tetrachloropropene as a starting material, the reaction products of at least two of the steps being supplied to the same distillation apparatus to subject the products to a separation operation simultaneously. With this method, 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, can be efficiently produced with reduced energy and equipment costs in an economically advantageous manner.
    • 本发明提供一种2,3,3,3-四氟丙烯的前体2,3,3,3-四氟丙烯或2-氯-1,1,1,2-四氟丙烷的制造方法,其特征在于, 反应步骤,使用至少一种选自1,1,1,2,3-五氯丙烷,2,3-二氯-1,1,1-三氟丙烷和1,1,2-三氯丙烷的含氯化合物, 3-四氯丙烯作为起始原料,将至少两个步骤的反应产物提供给同一蒸馏装置,以使产物同时进行分离操作。 利用该方法,能够以降低的能量有效地生产作为2,3,3,3-四氟丙烯的前体的2,3,3,3-四氟丙烯或2-氯-1,1,1,2-四氟丙烷 以及经济上有利的设备成本。