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    Multiple-stage hydrocarbon conversion with gravity-flowing catalyst particles
    1.
    发明授权
    Multiple-stage hydrocarbon conversion with gravity-flowing catalyst particles 失效
    具有重力流动催化剂颗粒的多阶段烃转化

    公开(公告)号：US4104149A

    公开(公告)日：1978-08-01

    申请号：US828803

    申请日：1977-08-29

    申请人： Elliot Veinerman ,  Donald E. Felch ,  Kenneth D. Peters

    发明人： Elliot Veinerman ,  Donald E. Felch ,  Kenneth D. Peters

    IPC分类号： C10G35/12

    CPC分类号： B01J8/12 ,  C10G35/12

    摘要： A multiple-stage catalytic conversion system in which a hydrocarbonaceous charge stock and hydrogen flow serially through a plurality of catalytic reaction zones, in each of which the catalyst particles are downwardly movable via gravity-flow. At least three reaction zones are utilized, with the fresh feed and hydrogen reactant stream being split between the first and second. The flow of that portion introduced into the second zone is restricted. Effluent flow from the first reaction zone is also restricted and combined with the effluent from the second reaction zone; the mixture is introduced into a third reaction zone. Where the catalytic conversion system consists of four reaction zones, the flow of effluent from the third is restricted prior to the introduction thereof into the fourth reaction zone. This technique decreases the mass flow to the first two zones and increases the pressure drop experienced within the entire conversion system, thus serving to alleviate the problems associated with the occurrence of stagnant catalyst areas as a result of catalyst particles being "pinned" within the reaction zone and thus unable to assume a downward, gravity-flow pattern. Restriction of the second zone feed and first reaction zone effluent insures a higher pressure in the first zone.

    摘要翻译： 一种多级催化转化系统，其中烃质电荷原料和氢气串联地通过多个催化反应区，其中每个催化剂颗粒可通过重力流向下移动。 使用至少三个反应区，其中新鲜进料和氢反应物流在第一和第二之间分配。 引入第二区域的部分的流动受到限制。 来自第一反应区的流出物流也受到限制并与来自第二反应区的流出物组合; 将混合物引入第三反应区。 当催化转化系统由四个反应区组成时，来自第三个反应区的流出物在引入第四反应区之前被限制。 这种技术降低了前两个区域的质量流量，并且增加了整个转化系统中经历的压降，从而有助于减轻由于催化剂颗粒在反应中被“固定”而导致停滞催化剂区域发生的问题 因此无法承受向下的重力流动模式。 第二区域进料和第一反应区流出物的限制在第一区域中确保更高的压力。

    Multiple-stage hydrocarbon conversion with gravity-flowing catalyst particles
    2.
    发明授权
    Multiple-stage hydrocarbon conversion with gravity-flowing catalyst particles 失效
    具有重力流动催化剂颗粒的多阶段烃转化

    公开(公告)号：US4119526A

    公开(公告)日：1978-10-10

    申请号：US795250

    申请日：1977-05-09

    申请人： Kenneth D. Peters ,  Elliot Veinerman ,  Donald E. Felch

    发明人： Kenneth D. Peters ,  Elliot Veinerman ,  Donald E. Felch

    IPC分类号： C10G35/12

    CPC分类号： B01J8/12 ,  C10G35/12

    摘要： A multiple-stage catalytic conversion system in which a hydrocarbonaceous charge stock and hydrogen flow serially through a plurality of catalytic reaction zones in each of which the catalyst particles are downwardly movable via gravity-flow. The flow of the product effluent from at least one reaction zone is restricted, as is the flow of the hydrogen-rich vaporous phase separated from the effluent from the last reaction zone and recycled to the first reaction zone. This technique increases the density of the reaction zone feed and the pressure drop within the entire reactor circuit, and thus serves to alleviate the problems associated with the occurrence of stagnant catalyst areas as a result of catalyst particles being "pinned" within the reaction zone and thus unable to assume a downward, gravity-flow pattern. Flow restriction may be effected either before, or after the inter-reaction zone heaters, preferably the former.

    摘要翻译： 一种多级催化转化系统，其中烃质电荷原料和氢气串联地通过多个催化反应区，其中催化剂颗粒通过重力流动向下移动。 来自至少一个反应区域的产物流出物的流动受到限制，从与最后反应区域的流出物分离出的富氢气相的流动也被循环到第一反应区。 这种技术增加了反应区进料的密度和整个反应器回路内的压降，从而有助于缓解由于催化剂颗粒在反应区内被“固定”而导致停滞的催化剂区域的发生所引起的问题， 因此不能承受向下的重力流动模式。 流动限制可以在反应前加热器之前或之后进行，优选前者。