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    • 1. 发明公开
    • PART-STREAM DISTILLATION
    • 部分蒸馏
    • EP3212627A1
    • 2017-09-06
    • EP15786922.3
    • 2015-10-27
    • BASF SEDow Global Technologies LLC
    • RIEDEL, DominicTELES, Joaquim, HenriqueSEELIG, BiancaKAMPE, PhilipWEBER, MarkusSCHRÖDER, AlexanderURBANCZYK, DanielWEIDENBACH, MeinolfMÜLLER, UlrichWITZL, WernerPARVULESCU, Andrei-NicolaeBÄR, Holger
    • C07D301/12
    • C07D301/12
    • A continuous process for the preparation of propylene oxide, comprising (a) reacting propene with hydrogen peroxide in a reaction apparatus in the presence of acetonitrile as solvent, obtaining a stream SO containing propylene oxide, acetonitrile, water, at least one further component B wherein the normal boiling point of the at least one component B is higher than the normal boiling point of acetonitrile; (b) separating propylene oxide from SO, obtaining a stream SI containing acetonitrile, water and the at least one further component B; (c) dividing S1 into two streams S2 and S3; (d) subjecting S3 to a vapor-liquid fractionation in a first fractionation unit, obtaining a vapor fraction stream S4 a being depleted, relative to S3, of at least one of the at least one component B and obtaining a liquid bottoms stream S4b, and subjecting at least part of the vapor fraction stream S4 a to a vapor-liquid fractionation in a second fractionation unit, obtaining a vapor fraction stream S4c and a liquid bottoms stream S4 being depleted, relative to S4a, of at least one of the at least one component B; (e) recycling at least a portion of S4, optionally after work-up, to (a).
    • 一种制备环氧丙烷的连续方法,包括(a)在乙腈作为溶剂存在下,在反应装置中使丙烯与过氧化氢反应,获得含有环氧丙烷,乙腈,水,至少一种另外的组分B的物流SO,其中 至少一种组分B的标准沸点高于乙腈的标准沸点; (b)从SO中分离氧化丙烯,获得含有乙腈,水和至少一种其他组分B的料流S1; (c)将S1分成两个流S2和S3; (d)使S3在第一分馏单元中进行气液分馏,获得至少一种组分B中的至少一种的相对于S3被耗尽的蒸气分馏流S4a,并获得液体底部料流S4b, 并且使至少部分蒸气馏分流S4a在第二分馏单元中经受蒸气 - 液体分馏,获得相对于S4a而言至少一个蒸气馏分流S4c和液体底部物流S4被耗尽 至少一个组件B; (e)可选地在后处理之后,将至少一部分S4再循环至(a)。
    • 5. 发明公开
    • PART-STREAM DISTILLATION
    • TEILSTROMDESTILLATION
    • EP2991970A1
    • 2016-03-09
    • EP14719778.4
    • 2014-04-28
    • BASF SEDow Global Technologies LLC
    • TELES, Joaquim HenriqueRIEDEL, DominicSEELIG, BiancaKAMPE, PhilipURBANCZYK, DanielWEBER, MarkusSCHRÖDER, AlexanderPARVULESCU, Andrei-NicolaeMÜLLER, UlrichWEIDENBACH, MeinolfWITZL, WernerBÄR, Holger
    • C07D301/12
    • C07D301/12B01D3/143C07D301/32
    • A continuous process for the preparation of propylene oxide, comprising(a) reacting propene, optionally admixed with propane, with hydrogen peroxide in a reaction apparatus in the presence of acetonitrile as solvent, obtaining a stream S0 containing propylene oxide, acetonitrile, water, at least one further component B, optionally propene and optionally propane, wherein the normal boiling point of the at least one component B is higher than the normal boiling point of acetonitrile and wherein the decadic logarithm of the octanol-water partition coefficient (log K
      ow ) of the at least one component B is greater than zero; (b) separating propylene oxidefrom S0, obtaining a stream S1 containing acetonitrile, water and the at least one further component B; (c) dividing S1 into two streams S2 and S3;(d) subjecting S3 to a vapor-liquid fractionation in a fractionation unit, obtaining a vapor fraction stream S4 being depleted of the at least one component B; (e) recycling at least a portion of S4, optionally after work-up, to (a).
    • 一种用于制备环氧丙烷的连续方法,包括(a)在乙腈作为溶剂的存在下,在反应装置中将丙烯任选与丙烷一起与过氧化氢反应,得到含有环氧丙烷,乙腈,水的流S0 至少一种另外的组分B,任选的丙烯和任选的丙烷,其中至少一种组分B的标准沸点高于乙腈的标准沸点,其中辛醇 - 水分配系数(log Kow)的十进制对数 所述至少一个组分B大于零; (b)从S0分离环氧丙烷,得到含有乙腈,水和至少一种其它组分B的料流S1; (c)将S1划分成两个流S2和S3; (d)使S3在分馏装置中进行汽 - 液分馏,得到耗尽至少一种B成分的蒸汽馏分流S4; (e)将至少一部分S4,任选地在后处理之后再循环至(a)。