PROCESS FOR DEHYDRATION OF ETHANOL TO ETHYLENE AT LOW ENERGY CONSUMPTION
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    发明申请
    PROCESS FOR DEHYDRATION OF ETHANOL TO ETHYLENE AT LOW ENERGY CONSUMPTION 有权
    乙醛在低能耗下脱乙苯的方法

    公开(公告)号:US20150299068A1

    公开(公告)日:2015-10-22

    申请号:US14646877

    申请日:2013-11-18

    IPC分类号: C07C1/24 C07C41/09

    摘要: A process for dehydration of an ethanol feedstock to ethylene by: a) preheating ethanol feedstock by heat exchange with effluent from e), b) pretreating the ethanol feedstock to produce pretreated ethanol feedstock, c) vaporizing a vaporization feedstock containing pretreated ethanol feedstock and at least a portion of the flow of treated water recycled in an exchanger to produce a vaporized feedstock, d) compressing said vaporized feedstock to produce a compressed feedstock, e) dehydrating said compressed feedstock in at least one adiabatic reactor, f) separating the effluent from the last adiabatic reactor of e) into an effluent containing ethylene and an effluent containing water, g) purifying at least a portion of the effluent containing water from 0 and separating at least one flow of treated water and at least one flow of unconverted ethanol, h) recycling at least a portion of the flow of treated water from g) upstream of c).

    摘要翻译: 乙醇原料通过以下方法脱乙醇的方法:a)通过与来自e)的流出物热交换来预热乙醇原料,b)预处理乙醇原料以产生经预处理的乙醇原料,c)蒸发含有经预处理的乙醇原料的蒸发原料, 在交换器中再循环的经处理水的至少一部分流动以产生蒸发的原料,d)压缩所述蒸发的原料以产生压缩原料,e)使至少一个绝热反应器中的所述压缩原料脱水,f)将流出物从 将e)的最后绝热反应器装入含有乙烯和含水的流出物的流出物中,g)将至少一部分含有水的流出物从0中纯化并分离至少一个处理水流和至少一个未转化的乙醇流, h)从c)上游再循环处理水流的至少一部分。

    PROCESS FOR OLIGOMERIZATION IN A CASCADE OF STIRRED GAS-LIQUID REACTORS WITH STAGED INJECTION OF ETHYLENE

    公开(公告)号:US20210107846A1

    公开(公告)日:2021-04-15

    申请号:US17256786

    申请日:2019-06-21

    IPC分类号: C07C2/32 B01J19/00 B01J19/24

    摘要: The invention relates to a process for the oligomerization of ethylene, carried out at a pressure of between 0.1 and 10.0 MPa, at a temperature of between 30 and 200° C., in a cascade of N gas/liquid reactors in series, N being at least equal to 2, comprising a step of introducing a catalytic oligomerization system into at least the first reactor of the cascade, a step of bringing said catalytic system and an optional solvent into contact with ethylene by introducing said ethylene into the lower part of the reaction chamber of at least the first reactor of the cascade, for each reactor n, a step of withdrawing a liquid fraction in the lower part of the reaction chamber of the reactor n, the liquid fraction being separated into two streams: a first stream corresponding to a first, “main”, part of the liquid fraction, which is conveyed to a heat exchanger for cooling; a second stream corresponding to the second part of the liquid fraction which constitutes the liquid feedstock of the following reactor n+1 in the cascade, a step of introducing said second part of the liquid phase withdrawn from the reactor n towards the reaction chamber of the following reactor n+1 in the direction of flow, a step of cooling said first part of the liquid fraction withdrawn from the reactor n in step c) by passing said first part of the liquid fraction into a heat exchanger in order to obtain a cooled liquid fraction, a step of introducing said liquid fraction cooled in step e) at the top of the reaction chamber of said reactor n, the steps a) to f) being carried out, unless indicated otherwise, for each reactor n of the cascade, n being between 1 and N. The invention also relates to a device of N stirred gas/liquid reactors in a cascade, enabling the oligomerization process to be carried out.