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    Process for catalytic cracking of petroleum based feed stocks
    4.
    发明授权
    Process for catalytic cracking of petroleum based feed stocks 失效
    石油基原料催化裂化工艺

    公开(公告)号：US5846402A

    公开(公告)日：1998-12-08

    申请号：US855946

    申请日：1997-05-14

    申请人： Sukumar Mandal ,  Suresh Kumarshah ,  Debasis Bhattacharyya ,  Vutukuru Lakshmi Narasimha Murthy ,  Asit Kumar Das ,  Sanjeev Singh ,  Ram Mohan Thakur ,  Shankar Sharma ,  Jagdev Kumar Dixit ,  Sobhan Ghosh ,  Satyen Kumar Das ,  Manoranjan Santra ,  Latoor Lal Saroya ,  Marri Rama Rao ,  Ganga Shanker Mishra ,  Satish Makhija

    发明人： Sukumar Mandal ,  Suresh Kumarshah ,  Debasis Bhattacharyya ,  Vutukuru Lakshmi Narasimha Murthy ,  Asit Kumar Das ,  Sanjeev Singh ,  Ram Mohan Thakur ,  Shankar Sharma ,  Jagdev Kumar Dixit ,  Sobhan Ghosh ,  Satyen Kumar Das ,  Manoranjan Santra ,  Latoor Lal Saroya ,  Marri Rama Rao ,  Ganga Shanker Mishra ,  Satish Makhija

    IPC分类号： B01J29/80 ,  C10G11/05 ,  C10G11/18 ,  C10G11/00

    CPC分类号： B01J29/80 ,  C10G2400/20 ,  C10G2400/28

    摘要： A process for selective catalytic cracking of a petroleum-based feedstock to produce a product having a high yield of liquified petroleum gas (LPG) and light olefins having 3 to 4 carbons includes providing a fluidized bed reactor which is a high velocity riser, continuously circulating fluidized bed reactor; providing a solid acidic catalyst comprised of: from 1 to 6% by wt. of ultra stable Y-zeolite; from 8-25% by wt. of Pentasil zeolite which is shape selective; from 0-8% by wt. of an active material which is bottom selective; from 0-1% by wt. of rare earth constituents; and from 91 to 60% by wt. of nonacidic constituents and binder; charging the fluidized bed reactor with the solid acidic catalyst and the petroleum-based feedstock; and cracking the petroleum-based feedstock in the presence of the solid acidic catalyst in the fluidized bed reactor. The reactor is operated at a Weight Hourly Space Velocity (WHSV) ranging from 40 to 120 hr.sup.-1, a ratio of solid acidic catalyst to petroleum-based feedstock ranging from 15 to 25, a temperature at the top of the high velocity riser ranging from 530.degree. C. to 600.degree. C., recycled riser products ranging from 0 to 40%, a pressure in the fluidized bed reactor ranging from 1.0 to 4.0 kg/cm.sup.2 g, and an amount of steam for dilution and quenching of hydrocarbons ranging from 3 to 50 wt. % of the petroleum-based feedstock. The Pentasil zeolite has a pore size ranging from 5 to 6 .ANG. so that the catalyst is highly selective for LPG and C.sub.4 light olefins with minimum dry gas and coke make, and so that the vanadium tolerance of the catalyst is increased and ranges up to 21,000 PPM. The process produces a LPG yield ranging up to 40 to 65 wt. % of the fresh petroleum-based feedstock, a selectivity for the light olefins of at least 40 wt. %, and a selectivity for the LPG of at least 45 wt.

    摘要翻译： 选择性催化裂化石油基原料以生产具有高产率的液化石油气（LPG）和具有3至4个碳原子的轻质烯烃的产物的方法包括提供流化床反应器，其为高速提升管，连续循环 流化床反应器; 提供固体酸性催化剂，其包含：1至6重量％ 的超稳定Y型沸石; 8-25重量％。 具有形状选择性的pentasil沸石; 0-8重量％ 的底部选择性活性物质; 0-1重量％ 的稀土成分; 和91〜60重量％。 的非酸成分和粘合剂; 用固体酸性催化剂和石油基原料装入流化床反应器; 并在流化床反应器中在固体酸性催化剂存在下裂化石油基原料。 反应器以40至120小时-1的重量小时空间速度（WHSV）运行，固体酸性催化剂与石油基原料的比例为15至25，高速提升管顶部的温度范围 从530℃至600℃，循环的提升产品的范围为0至40％，流化床反应器的压力范围为1.0至4.0kg / cm2g，以及用于稀释和猝灭烃的蒸汽量 3〜50重量％ ％的石油基原料。 Pentasil沸石的孔径范围为5至6安格姆，使得催化剂对于具有最少干燥气体和焦炭的LPG和C4轻质烯烃具有高选择性，并且使得催化剂的耐钒性增加并且范围高达21,000 PPM。 该方法产生高达40至65重量％的LPG产率。 ％的新鲜石油基原料，轻质烯烃的选择性至少为40wt。 ％，并且LPG的选择性至少为45wt。

    Fluidized catalytic cracking process and apparatus
    10.
    发明授权
    Fluidized catalytic cracking process and apparatus 有权
    流化催化裂化工艺及装置

    公开(公告)号：US6149875A

    公开(公告)日：2000-11-21

    申请号：US219459

    申请日：1998-12-23

    申请人： Marri Rama Rao ,  Vutukuru Lakshmi Narasimha Murthy ,  Sanjeev Singh ,  Asit Kumar Das ,  Sobhan Ghosh ,  Debasis Bhattacharyya ,  Satish Makhija ,  Sukumar Mandal

    发明人： Marri Rama Rao ,  Vutukuru Lakshmi Narasimha Murthy ,  Sanjeev Singh ,  Asit Kumar Das ,  Sobhan Ghosh ,  Debasis Bhattacharyya ,  Satish Makhija ,  Sukumar Mandal

    IPC分类号： C10G11/05 ,  C10G11/18 ,  B01J8/26

    CPC分类号： C10G11/18 ,  C10G11/05

    摘要： A fluidized catalytic cracking apparatus includes a riser containing a regenerated catalyst and adsorbant, and has a first inlet for introduction of high velocity steam, a second inlet for introduction of a feed stream containing heavy residual fractions with high concentrations of conradson coke, metals including vanadium and nickel, and additional poisons including nitrogen, a third inlet for introduction of an adsorbent, and a fourth inlet disposed above the third inlet means for introduction of a regenerated catalyst, the adsorbent having a particle size which is larger than that of the regenerated catalyst. A stripper is provided into which the riser extends for causing separation of a hydrocarbon fraction from spent catalyst and adsorbent, and a separator is connected to the stripper and has a base, an inlet at the base for introduction of steam in the upward direction so as to provide a transport velocity in the upward direction for the spent catalyst and cause a separation of the particles of the spent catalyst from the adsorbent in use. A regenerator is connected to the separator and has an outlet and is in flow communication with the fourth inlet for introduction of the regenerated catalyst into the riser. A burner is provided for receiving the adsorbent from the separator and for causing a regeneration thereof, the burner having an inlet for introduction of oxygen containing gas and an outlet in flow communication with the third inlet for introduction of the adsorbent into the riser. A lift line is connected between the separator and the regenerator for allowing a flow of the spent catalyst from the separator into the regenerator while leaving the adsorbent within the separator in a fluidized condition the lift line having a plurality of steam inlets disposed at different elevations along its length for introduction of steam to provide said transport velocity.

    摘要翻译： 流化催化裂化装置包括含有再生催化剂和吸附剂的提升管，并且具有用于引入高速蒸汽的第一入口，用于引入含有高浓度康拉多焦炭的重残余馏分的进料流的第二入口，包括钒的金属 和镍，以及包括氮的附加毒物，用于引入吸附剂的第三入口，以及设置在第三入口装置上方以引入再生催化剂的第四入口，所述吸附剂的粒度大于再生催化剂的粒径 。 提供了一种汽提器，其中提升管延伸用于使烃馏分与废催化剂和吸附剂分离，并且分离器连接到汽提器并具有基座，底部是用于沿向上方向引入蒸汽的入口，以便 为废催化剂向上提供输送速度，并在使用中引起废催化剂颗粒与吸附剂的分离。 再生器连接到分离器并且具有出口并且与第四入口流动连通以将再生催化剂引入提升管。 提供燃烧器用于从分离器接收吸附剂并引起其再生，燃烧器具有用于引入含氧气体的入口和与第三入口流动连通的出口，用于将吸附剂引入提升管中。 升降线连接在分离器和再生器之间，用于允许废催化剂从分离器流入再生器，同时在分离器内留下吸附剂处于流化状态，提升管线具有沿着不同高度设置的多个蒸汽入口 其引入蒸汽的长度以提供所述输送速度。