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    A PROCESS FOR THE PRODUCTION OF NEEDLE COKE
    3.
    发明申请
    A PROCESS FOR THE PRODUCTION OF NEEDLE COKE 有权
    一种生产针刺的方法

    公开(公告)号：US20070181462A2

    公开(公告)日：2007-08-09

    申请号：US10892024

    申请日：2004-07-15

    申请人： Debasis Bhattacharyya ,  Satheesh Kumaran ,  Bandaru Prasad Gupta ,  Pramod Kumar ,  Asit Das ,  Gadari Saidulu ,  Satyen Das ,  Gurpreet Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raje

    发明人： Debasis Bhattacharyya ,  Satheesh Kumaran ,  Bandaru Prasad Gupta ,  Pramod Kumar ,  Asit Das ,  Gadari Saidulu ,  Satyen Das ,  Gurpreet Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raje

    IPC分类号： C10G51/02 ,  C10G9/00

    CPC分类号： C10G9/005 ,  C10B55/00 ,  C10G51/023

    摘要： A process is disclosed for producing needle coke from heavy atmospheric distillation residues having sulfur no more than 0.7 wt %, which process involves the steps of heating the feedstock to a temperature in the range of 440 to 520° C. for thermal cracking in a soaking column under pressure in the range of 1 to 10 kg/cm2 to separate the easily cokable material, separating the cracked products in a quench column and a distillation column and then subjecting the hydrocarbon fraction from the bottom of the quench column and a hydrocarbon fraction having a boiling point in the range of 380 to 480° C. from the distillation column and/or any other suitable heavier hydrocarbon streams in a definite ratio depending on certain characteristic parameters to thermal cracking in a second soaking column at a temperature of 460 to 540° C., pressure in the range of 2 to 20 kg/cm2 in presence of added quantity of steam for formation of a mesophase carbonaceous structure which on steam stripping and cooling forms a solid crystalline coke suitable for manufacturing of graphite electrode of large diameter having co-efficient of thermal expansion lower than 1.1×10−6/° C. measured on graphite artifact in the temperature range of 25 to 525° C.

    摘要翻译： 公开了一种用于从具有不超过0.7重量％的硫的重大气压蒸馏残余物生产针状焦炭的方法，该方法包括将原料加热至440-520℃范围内的温度以进行浸泡中的热裂解 柱在1至10kg / cm 2范围内的压力下分离易分解的易吸收材料，将裂化产物在骤冷塔和蒸馏塔中分离，然后将来自底部的烃馏分 骤冷塔和具有沸点在380-480℃范围内的沸点在380-480℃范围内的烃馏分和/或任何其它合适的较重的烃流以一定的比例取决于某些特征参数与第二次均热中的热裂解 在460至540℃的温度下，在存在用于形成中间相碳质结构的添加量的蒸汽的存在下，在2至20kg / cm 2范围内的压力，其中 在蒸汽汽提和冷却时，形成适用于制造热膨胀系数小于1.1×10 -6 /℃的大直径石墨电极的固体结晶焦炭，其温度在石墨伪影上测量 范围为25至525℃

    Process for the production of needle coke
    4.
    发明申请
    Process for the production of needle coke 有权
    生产针状焦的工艺

    公开(公告)号：US20050284793A1

    公开(公告)日：2005-12-29

    申请号：US10892024

    申请日：2004-07-15

    申请人： Debasis Bhattacharyya ,  Satheesh Kumaran ,  Bandaru Prasad Gupta ,  Pramod Kumar ,  Asit Das ,  Gadari Saidulu ,  Satyen Das ,  Gurpreet Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raje

    发明人： Debasis Bhattacharyya ,  Satheesh Kumaran ,  Bandaru Prasad Gupta ,  Pramod Kumar ,  Asit Das ,  Gadari Saidulu ,  Satyen Das ,  Gurpreet Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raje

    IPC分类号： C10B55/00 ,  C10B57/02 ,  C10G9/00 ,  C10G51/02

    CPC分类号： C10G9/005 ,  C10B55/00 ,  C10G51/023

    摘要： A process is disclosed for producing needle coke from heavy atmospheric distillation residues having sulfur no more than 0.7 wt %, which process involves the steps of heating the feedstock to a temperature in the range of 460 to 540° C. for thermal cracking in a soaking column under pressure in the range of 1 to 10 kg/cm2 to separate the easily cokable material, separating the cracked products in a quench column and a distillation column and then subjecting the hydrocarbon fraction from the bottom of the quench column and a heavy gas oil fraction having 10% true boiling point more than 370° C. and 90% true boiling point not less than 480° C. from the distillation column and/or any other suitable heavier hydrocarbon streams in a definite ratio depending on certain characteristic parameters to thermal cracking in a second soaking column at a temperature of 440 to 520° C., pressure in the range of 2 to 20 kg/cm2 in presence of added quantity of steam for formation of a mesophase carbonaceous structure which on steam stripping and cooling forms a solid crystalline coke suitable for manufacturing of graphite electrode of large diameter having co-efficient of thermal expansion lower than 1.1×10−6/° C. measured on graphite artifact in the temperature range of 25 to 525° C.

    摘要翻译： 公开了一种用于从具有不超过0.7重量％的硫的重大气压蒸馏残余物生产针状焦炭的方法，该方法包括将原料加热至在460至540℃范围内的温度以进行浸泡中的热裂解 柱在1至10kg / cm 2范围内的压力下分离易分解的易溶材料，将裂化产物在骤冷塔和蒸馏塔中分离，然后将来自底部的烃馏分 淬火塔和具有10％真实沸点大于370℃的重质瓦斯油馏分和来自蒸馏塔和/或任何其它合适的较重烃流的确定的90％真实沸点不低于480℃ 的比例取决于某些特征参数与第二均热塔中的热裂解在440至520℃的温度下，在2至20kg / cm 2范围内的压力，在加入量 蒸汽格式化 n的中间相碳质结构，其在蒸汽汽提和冷却时形成适于制造热膨胀系数小于1.1×10 -6 /℃的大直径石墨电极的固体结晶焦炭。 在25至525℃的温度范围内测量石墨伪影。

    Process for catalytic cracking of petroleum based feed stocks
    6.
    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
    8.
    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
    9.
    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。