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    • 3. 发明申请
    • A PROCESS FOR THE PREPARATION OF PROPYLENE OXIDE
    • 一种制备环氧丙烷的方法
    • WO2017140774A1
    • 2017-08-24
    • PCT/EP2017/053492
    • 2017-02-16
    • BASF SE
    • RIEDEL, DominicTELES, Joaquim H.SCHELLING, HeinerWEGERLE, UlrikeMÜLLER, UlrichPARVULESCU, Andrei-NicolaeMANNWEILER, JochenHENN, TimoLÜDERITZ, ThomasWÖRZ, Nicolai TonioMÜLLER, ChristianWEBER, MarkusURBANCZYK, Daniel
    • C07D301/12C07D301/36
    • C07D301/12C07D301/36
    • A continuous process for the preparation of propylene oxide, comprising a start-up stage and normal run stage, wherein the normal run stage comprises (i) continuously providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, a formate salt, water and optionally propane, wherein in the liquid feed stream, the molar amount of the formate salt relative to the molar amount of hydrogen peroxide at a given point of time during the normal run stage is a N (Fo/H 2 O 2 ); (ii) continuously passing the liquid feed stream provided in (i) into an epoxidation zone comprising a catalyst comprising a titanium zeolite having framework type MWW, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the formate salt, optionally propene, and optionally propane; (iii) continuously removing an effluent stream from the epoxidation zone, the effluent stream comprising propylene oxide, acetonitrile, water, at least a portion of the formate salt, optionally propene, and optionally propane; wherein the normal run stage is characterized in an average rate of change of a N (Fo/H 2 O 2 ) of less than 0 h -1 .
    • 一种用于制备环氧丙烷的连续方法,其包括启动阶段和正常运行阶段,其中正常运行阶段包括(i)连续提供包含丙烯,过氧化氢, 乙腈,甲酸盐,水和任选的丙烷,其中在液体进料流中,相对于在正常运行阶段期间的给定时间点的过氧化氢的摩尔量,甲酸盐的摩尔量是N (F0 / H <子> 2 0 <子> 2 ); (ii)将(i)中提供的液体进料流连续通入包含催化剂的环氧化区中,所述催化剂包含具有骨架型MWW的钛沸石,并使液体进料流在环氧化区中经受环氧化反应条件,获得反应混合物,所述反应混合物包含 环氧丙烷,乙腈,水,甲酸盐,任选的丙烯和任选的丙烷; (iii)连续地从环氧化区中除去流出物流,所述流出物流包含环氧丙烷,乙腈,水,至少一部分甲酸盐,任选的丙烯和任选的丙烷; 其中所述正常运行阶段的特征在于小于0小时的αN(Fo / H2θO 2)的平均变化率 -1