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

    Abstract: 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feedstock of the following reactor n+1 in the cascade, a step of introducing said second part of the liquid phase withdrawn from the reactor n towards the reaction chamber of the following reactor n+1 in the direction of flow, a step of cooling said first part of the liquid fraction withdrawn from the reactor n in step c) by passing said first part of the liquid fraction into a heat exchanger in order to obtain a cooled liquid fraction, a step of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.

    METHOD AND PLANT FOR REDOX CHEMICAL LOOPING COMBUSTION OF A SOLID HYDROCARBON FEEDSTOCK
    7.
    发明申请
    METHOD AND PLANT FOR REDOX CHEMICAL LOOPING COMBUSTION OF A SOLID HYDROCARBON FEEDSTOCK 审中-公开
    固体碳氢化合物的氧化还原反应的方法和装置

    公开(公告)号:US20160146456A1

    公开(公告)日:2016-05-26

    申请号:US14897866

    申请日:2014-06-12

    Abstract: The invention relates to a method and to a device for chemical looping combustion CLC of a solid hydrocarbon feed wherein it is proposed to inject the solid hydrocarbon feed so as to limit any occurrence of sticking of the feed to the walls of the injection device. The solid feed is fed into a conveying zone operating under fluidized bed conditions and opening into a combustion reactor. A fluidization gas is injected into this conveying zone while controlling the flow of gas in such a way that the superficial velocity of the gas in the conveying zone is higher than the terminal velocity of the solid hydrocarbon feed particles and the terminal velocity of solid particles present in the combustion reactor, and while controlling the fluidization gas temperature in such a way that the temperature in the conveying zone is less than or equal to 500° C.

    Abstract translation: 本发明涉及一种用于固体烃进料的化学循环燃烧CLC的方法和装置,其中建议注入固体烃进料以便限制进料粘附到注射装置的壁上。 将固体进料送入在流化床条件下运行并输送到燃烧反应器中的输送区。 流化气体被注入到该输送区域中,同时控制气体的流动,使得输送区域中的气体的表观速度高于固体烃进料颗粒的末端速度和存在的固体颗粒的终端速度 在燃烧反应器中,并且以使输送区域的温度小于或等于500℃的方式控制流化气体温度。

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