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    Fluidized catalytic cracking process
    1.
    发明授权
    Fluidized catalytic cracking process 有权
    流化催化裂化工艺

    公开(公告)号：US06267873B1

    公开(公告)日：2001-07-31

    申请号：US09201896

    申请日：1998-11-30

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

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

    IPC分类号： C10G1100

    CPC分类号： C10G11/187 ,  C10G11/18 ,  Y10S585/91

    摘要： A fluidized catalytic cracking process for catalytically cracking a feed to lighter products includes introducing a heated catalyst and the feed into a bottom riser of a fluidized catalytic cracking apparatus and allowing the heated catalyst and the feed to preaccelerate upwardly within the bottom riser as a mixture; flowing the mixture upwardly from the bottom riser through a plurality of microriser tubes disposed within a regenerator under conditions effective to cause a cracking reaction of the hydrocarbons and result in a mixture including coked catalyst and hydrocarbon vapors; passing the mixture from the microriser tubes through a catalyst separator for separating the coked catalyst from the hydrocarbon vapors; collecting coked catalyst in a stripper for stripping out hydrocarbon vapors carried along with the coked catalyst and introducing the coked catalyst collected into a regenerator; simultaneous with flowing the mixture, combusting the coked catalyst within the regenerator under conditions effective to cause regeneration of the catalyst so that hot regenerated catalyst is produced and heat transferred to the microriser tubes; introducing the hot regenerated catalyst from the regenerator into the bottom riser for facilitating continuous operation; and directing hydrocarbon vapors from the catalyst separator and from the stripper to a fractionator for separation of products.

    摘要翻译： 将进料催化裂化成较轻产物的流化催化裂化方法包括将加热的催化剂和进料引入流化催化裂化装置的底部提升管中，并允许加热的催化剂和进料作为混合物在底部提升管内向前预加速; 在有效引起烃的裂解反应并产生包括焦化催化剂和烃蒸汽的混合物的条件下，将混合物从底部提升管向上流过设置在再生器内的多个微型管; 将混合物从微循环管通过催化剂分离器，用于将焦化的催化剂与烃蒸气分离; 在汽提器中收集焦化的催化剂，用于汽提与焦炭催化剂一起携带的烃蒸气并将收集的焦化催化剂引入再生器中; 同时使混合物流动，在有效使催化剂再生的条件下在再生器内燃烧焦化催化剂，使得产生热再生催化剂并将热量传递至微型管; 将热再生催化剂从再生器引入底部提升管，以便于连续操作; 并将碳氢化合物蒸汽从催化剂分离器和汽提器引导至用于分离产物的分馏器。

    Process for catalytic cracking of petroleum based feed stocks
    2.
    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
    3.
    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。

    Fluidized catalytic cracking process
    4.
    发明授权
    Fluidized catalytic cracking process 有权
    流化催化裂化工艺

    公开(公告)号：US06656344B1

    公开(公告)日：2003-12-02

    申请号：US09657813

    申请日：2000-09-08

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

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

    IPC分类号： C10G1100

    CPC分类号： C10G55/06 ,  C10G11/05 ,  C10G11/18

    摘要： A sequential processing for heavy petroleum residues is disclosed which uses a separate mixture of catalyst and adsorbent. The solid adsorbent and FCC (fluids catalytic cracking) catalyst particles differ significant at least on particle size or density or both. The adsorbent preferably consist of calcined coke or metal oxides of Al, Si, or Mg having enhanced ability of selectively capture different impurities of the residual oil. The adsorbent particles first treat the residual hydrocarbons in the riser bottom end subsequently the actual catalyst tales care of catalytic cracking in the upper section of the riser. The spent solid mixture is fed to the catalyst separator which uses steam at sufficiently high velocity but at lower temperature to lift the catalyst particles out of the separator. Such a novel low temperature faster separation minimizes Vanadium mobility and deactivation of the catalyst. A net coke stream is withdrawn from the separator/burner especially while processing residues above 5 wt % CCR. This allows successful processing of even very heavy residues with CCR of 20 wt % and metals (vanadium & nickel) or 300 ppm, without requiring higher catalyst make up or catalyst and edsorbent cooling.

    摘要翻译： 公开了重质石油残渣的连续处理，其使用催化剂和吸附剂的单独混合物。 固体吸附剂和FCC（流体催化裂化）催化剂颗粒至少在颗粒尺寸或密度上均有显着差异，或两者均不同。 吸附剂优选由具有增强的选择性捕获残余油杂质的能力的Al，Si或Mg的煅烧焦炭或金属氧化物组成。 吸附剂颗粒首先处理提升管底端中的残余烃，随后实际的催化剂在提升管的上部处理催化裂化。 将废弃的固体混合物加入催化剂分离器中，催化剂分离器以足够高的速度使用蒸汽，但是在较低的温度下将催化剂颗粒提升出分离器。 这种新颖的低温更快的分离使钒的迁移率和催化剂的失活最小化。 特别是在处理高于5wt％CCR的残留物时，将净焦炭流从分离器/燃烧器中排出。 这样可以成功地处理甚至非常重的残留物，CCR为20wt％，金属（钒和镍）或300ppm，而不需要较高的催化剂组成或催化剂和吸附剂冷却。

    Fluidized catalytic cracking apparatus
    5.
    发明授权
    Fluidized catalytic cracking apparatus 失效
    流化催化裂化装置

    公开(公告)号：US6027696A

    公开(公告)日：2000-02-22

    申请号：US843287

    申请日：1997-04-11

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

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

    IPC分类号： B01J8/26 ,  C10G11/18 ,  F27B15/14

    CPC分类号： C10G11/18 ,  B01J8/26

    摘要： A fluidized catalytic cracking apparatus for catalytically cracking a heavy hydrocarbon feed to lighter products includes a regenerator shell for heating spent catalyst, the regenerator shell having a bottom riser for introduction of the heavy hydrocarbon feed, a catalyst, and steam, and from which flows a stream, the bottom riser having a distributor for allowing the stream from the bottom riser to be distributed into a plurality of reaction tubes positioned within the regenerator shell; a catalyst separator connected to an upper end of the regenerator shell; a stripper connected to the catalyst separator to cause a stripping of the catalyst and the spent catalyst feed to the regenerator shell; and an air inlet provided in the regenerator shell so as to cause a combustion within the regenerator shell.

    摘要翻译： 用于将重质烃进料催化裂化成轻质产物的流化催化裂化装置包括用于加热废催化剂的再生器壳，再生器壳具有用于引入重质烃进料的底部提升管，催化剂和蒸汽， 底部提升管具有用于允许来自底部提升管的流分配到位于再生器壳体内的多个反应管中的分配器; 连接到再生器壳体的上端的催化剂分离器; 连接到催化剂分离器以使催化剂和废催化剂进料进入再生器壳体的汽提塔; 以及设置在再生器壳体中以使再生器壳体内的燃烧的空气入口。