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    • 1. 发明授权
    • PROCESS FOR PREPARING 1,1,1,3,3-PENTAFLUOROPROPANE
    • 制备1,1,1,3,3-五氟丙烷的方法
    • EP0812814B1
    • 2001-12-12
    • EP96901967.8
    • 1996-02-08
    • DAIKIN INDUSTRIES, LTD.
    • AOYAMA, HirokazuSHIBATA, NoriakiYAMAMOTO, Akinori
    • C07C19/08C07C17/23C07B61/00B01J23/44C07C17/38
    • C07C19/08C07C17/23
    • A process for preparing 1,1,1,3,3-pentafluoropropane comprising the step (A) of reducing 2,3-dichloro-1,1,1,3,3-pentafluoropropane with hydrogen in the presence of a hydrogenation catalyst under an atmospheric or elevated pressure by a vapor-phase reaction, the step (B) of introducing all of the products of the step (A) into a condenser to obtain a non-condensed component comprising hydrogen and hydrogen chloride and a condensed component comprising 1,1,1,3,3-pentafluoropropane or a non-condensed component comprising hydrogen and a condensed component comprising hydrogen chloride and 1,1,1,3,3-pentafluoropropane, the step (C) of separating hydrogen from the non-condensed component of the step (B) and recycling the hydrogen to the above step (A), and the step (D) of separating 1,1,1,3,3-pentafluoropropane from the condensed component of the step (B). This process makes it possible to prepare 1,1,1,3,3-pentafluoropropane industrially efficiently and economically.
    • 一种制备1,1,1,3,3-五氟丙烷的方法,包括在氢化催化剂存在下用氢气还原2,3-二氯-1,1,1,3,3-五氟丙烷的步骤(A) 通过气相反应在常压或升高的压力下,将步骤(A)的所有产物引入冷凝器以获得包含氢和氯化氢的非冷凝组分和包含1 ,1,1,3,3-五氟丙烷或含有氢的非缩合成分和含有氯化氢和1,1,1,3,3-五氟丙烷的缩合成分的工序(C) 步骤(B)的浓缩组分并将氢气再循环至上述步骤(A),和从步骤(B)的浓缩组分分离1,1,1,3,3-五氟丙烷的步骤(D)。 该工艺可以在工业上有效且经济地制备1,1,1,3,3-五氟丙烷。
    • 9. 发明公开
    • PROCESS FOR PREPARING 1,1,1,3,3-PENTAFLUOROPROPANE
    • VERFAHREN ZUR HERSTELLUNG VON 1,1,1,3,3-PENTAFLUOROPROPAN
    • EP0812814A1
    • 1997-12-17
    • EP96901967.8
    • 1996-02-08
    • DAIKIN INDUSTRIES, LTD.
    • AOYAMA, HirokazuSHIBATA, NoriakiYAMAMOTO, Akinori
    • C07C19/08C07C17/23C07B61/00B01J23/44
    • C07C19/08C07C17/23
    • A manufacturing method for 1,1,1,3,3-pentafluoropropane in which the method is composed of:

      step A wherein 2,3-dichloro-1,1,1,3,3-pentafluoropropane is reduced with hydrogen under the presence of hydrogenation catalyst in gaseous phase;
      step B wherein all of the products of the said step A are introduced into a cooler condenser, so that either a component of hydrogen and hydrogen chloride as non-condensation component and another compoment of 1,1,1,3,3-pentafluoropropane as condensation component, or a component of hydrogen as non-condensation component and another component of hydrogen chloride and 1,1,1,3,3-pentafluoropropane as condensation component are obtained;
      step C wherein hydrogen is separated from the non-condensation component of the said step B, and it is recycled to the said step A; and
      step D wherein 1,1,1,3,3-pentafluoropropane is separated from the condensation component of the said step B.

      The producing method based on a manufacturing process of 1,1,1,3,3-pentafluoropropane can be provided with good efficiency and economy in industrial scales.
    • 1,1,1,3,3-五氟丙烷的制造方法,其中该方法由以下组成:步骤A,其中2,3-二氯-1,1,1,3,3-五氟丙烷在氢气存在下用氢还原 的氢化催化剂; 步骤B,其中将所述步骤A的所有产物引入冷却器冷凝器中,使得氢和氯化氢的组分作为非缩合组分,另一组分为1,1,1,3,3-五氟丙烷作为 缩合成分或作为非缩合成分的氢成分,以及作为缩合成分的氯化氢和1,1,1,3,3-五氟丙烷的其他成分; 步骤C,其中氢与所述步骤B的非缩合组分分离,并将其再循环至所述步骤A; 和步骤D,其中1,1,1,3,3-五氟丙烷与所述步骤B的缩合组分分离。可以提供基于1,1,1,3,3-五氟丙烷的制备方法的制备方法 工业规模效益好,经济效益好。