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    Method for gas - solid contacting in a bubbling fluidized bed reactor
    5.
    发明申请
    Method for gas - solid contacting in a bubbling fluidized bed reactor 失效
    在鼓泡流化床反应器中气 - 固接触的方法

    公开(公告)号：US20020179489A1

    公开(公告)日：2002-12-05

    申请号：US09817744

    申请日：2001-03-26

    申请人： COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH

    发明人： Vasant Ramchandra Choudhary ,  Tushar Vasant Choudhary

    IPC分类号： C10G047/02 ,  C10G011/02 ,  C10G035/04

    CPC分类号： B01J8/1809 ,  B01J8/0055 ,  B01J8/1818 ,  B01J2208/00548 ,  C10G2/332 ,  C10G2/344 ,  C10G9/32 ,  C10G11/18 ,  C10G35/14 ,  C10G47/18 ,  C10G47/30

    摘要： The present invention relates to a method for gas-solid contacting in a bubbling fluidized bed reactor by: (a) introducing into a reactor with bed length to bed diameter ratio below about 5.0, a primary gas consisting essentially of reactant(s) of the reaction to be carried out in the bed of solid particles through a primary gas distributor located at the reactor bottom at a superficial gas velocity Up, which is very close or equivalent to the minimum fluidization velocity Umf, required for achieving the incipient fluidization of the solid particles in the bed to obtain an emulsion phase consisting essentially of the solid particles and the primary gas with little or no formation of gas bubbles to achieve incipient fluidization or liquid-like behavior of fluidizable solid particles; (b) forming gas bubbles in the incipiently fluidized bed by introducing through a secondary gas distributor located immediately above the primary gas distributor a secondary gas, selected from one of the reactants which is used in excess of that required for the reaction stoichiometry, steam, an inert or a mixture of two or more thereof at a superficial gas velocity, Us, which is related to the superficial velocity of the primary gas such that a ratio of the superficial velocity of the secondary gas to the superficial velocity of the primary gas Us/Up, is in the range from about 0.5 to about 10.0, preferably from about 1 to about 5.

    摘要翻译： 本发明涉及通过以下步骤在鼓泡流化床反应器中气 - 固接触的方法：（a）将床长至床直径比低于约5.0引入反应器中，主要气体基本上由 在固体颗粒床上通过位于反应器底部的主气体分布器以表面气体速度Up进行反应，该气体速度Up非常接近或等于实现固体初始流化所需的最小流化速度Umf 以获得基本上由固体颗粒和初级气体组成的乳液相，其中很少或不形成气泡，以实现可流化固体颗粒的初始流化或液体状态; （b）在初始流化床中形成气泡，通过位于初级气体分配器正上方的二次气体分配器引入二次气体，二次气体选自使用超过反应化学计量所需反应物的一种反应物之一，蒸汽， 惰性或其两种或多种的混合物，其表面气体速度为Us，其与初级气体的表观速度相关，使得二次气体的表观速度与初级气体的表观速度Us /升，在约0.5至约10.0，优选约1至约5的范围内。

    Process for the removal of particulates entrained in a fluid using a magnetically stabilized fluidized bed
    7.
    发明授权
    Process for the removal of particulates entrained in a fluid using a magnetically stabilized fluidized bed 失效
    使用磁稳定流化床除去夹带在流体中的微粒的方法

    公开(公告)号：US4296080A

    公开(公告)日：1981-10-20

    申请号：US935566

    申请日：1978-08-21

    申请人： Ronald E. Rosensweig

    发明人： Ronald E. Rosensweig

    IPC分类号： B01J8/42 ,  C10G35/14 ,  C10G45/20 ,  C01B17/60

    CPC分类号： B01J8/42 ,  C10G35/14 ,  C10G45/20 ,  Y10S423/16

    摘要： A fluidized bed process is disclosed which comprises subjecting a bed comprised of solid particulate magnetizable, fluidizable material within an external force field wherein at least a portion of the bed containing said solid particulate magnetizable and fluidizable material and fluidizing fluid are subjected to a nontime varying and substantially uniform applied magnetic field having a substantial component along the direction of the external force field such that said solid particulate magnetizable and fluidizable material has a component of magnetization along the direction of the external force field and wherein at least a portion of said bed containing the solid particulate magnetizable and fluidizable material is fluidized by a flow of fluid opposing said external force field at a superficial fluid velocity ranging between:(a) more than the normal minimum fluidization superficial fluid velocity required to fluidize said bed in the absence of said applied magnetic field; and,(b) less than the superficial fluid velocity required to cause time-varying fluctuations of pressure difference through said stably fluidized bed portion during continuous fluidization in the presence of said applied magnetic field. The strength of the magnetic field and its deviation from a vertical orientation are maintained so as to prevent and/or suppress the formation of bubbles in the fluidized media at a given fluid flow rate and with a selected fluidized particles makeup.Fluid throughput rates which are up to 10 to 20 or more times the flow rate of the fluidized bed at incipient fluidization in the absence of the applied magnetic field are achieved, concomitant with the substantial absence of bubbles. The magnetically stabilized fluidized bed has the appearance of an expanded fixed bed with no gross solids circulation and very little or no gas bypassing.

    摘要翻译： 公开了一种流化床方法，其包括在外部力场内对由固体颗粒可磁化的可流化材料组成的床进行处理，其中包含所述固体颗粒可磁化和可流化材料的床的至少一部分和流化流体经受不时变化， 基本均匀的施加磁场沿外力场的方向具有实质部件，使得所述固体颗粒可磁化和可流动的材料沿着外力场的方向具有磁化的分量，并且其中所述床的至少一部分包含 固体颗粒可磁化和可流动的材料通过与所述外力场相对的流体流以流体速度流动，所述表面流体速度范围在以下之间：（a）大于在不存在所述施加磁力的情况下使所述床流化所需的正常最小流化表面流体速度 领域; 和（b）在存在所述施加的磁场的情况下，在连续流化期间，小于通过所述稳定流化床部分引起的压力差时间变化所需的表观流体速度。 维持磁场的强度及其与垂直取向的偏差，以便以给定的流体流速和选择的流化颗粒组合来防止和/或抑制流化介质中气泡的形成。 实现了在没有施加的磁场的情况下在初始流化时流化床的流速高达10至20或更多次的流体通过速率，同时基本上不存在气泡。 磁稳定流化床具有膨胀的固定床的外观，没有总的固体循环，并且很少或没有气体旁路。

    Fluid catalytic cracking process for upgrading a gasoline-range feed
    8.
    发明授权
    Fluid catalytic cracking process for upgrading a gasoline-range feed 失效
    用于升级汽油范围进料的流化催化裂化过程

    公开(公告)号：US3948757A

    公开(公告)日：1976-04-06

    申请号：US361911

    申请日：1973-05-21

    申请人： Charles W. Strother

    发明人： Charles W. Strother

    IPC分类号： B01J8/26 ,  C10G11/18 ,  C10G35/14 ,  C10G11/02 ,  B01J9/20

    CPC分类号： B01J8/26 ,  C10G11/18 ,  C10G11/182 ,  C10G35/14

    摘要： A fluid catalytic cracking process for simultaneously cracking a gas oil feed and upgrading a gasoline-range feed to produce high quality motor fuel. The gasoline-range feed is contacted with freshly regenerated catalyst in a relatively upstream portion of a short-time dilute-phase riser reaction zone maintained at first catalytic cracking conditions and the gas oil feed is contacted with used catalyst in a relatively downstream portion of the riser reaction zone which is maintained at second catalytic cracking conditions.Particularly suited to efficiently cracking a gas oil feed and upgrading a wide variety of gasoline range-feed, including the more refractory of such feeds, is a fluid catalytic cracking process comprising a short-time dilute-phase riser reaction zone and a regeneration zone in which CO, produced by the oxidation of coke, is essentially completely oxidized to CO.sub.2 and in which at least part of the heat of combustion is transferred to regenerated catalyst.

    摘要翻译： 一种流体催化裂化方法，用于同时裂化瓦斯油进料和升级汽油范围进料以产生高质量的马达燃料。 汽油范围的进料在维持在第一催化裂化条件的短时间稀相提升管反应区的相对上游部分与新鲜再生的催化剂接触，并且瓦斯油进料在所述催化裂化反应的相对下游部分与所用催化剂接触 提升管反应区保持在第二催化裂化条件。