公开(公告)号：US20050158237A1

公开(公告)日：2005-07-21

申请号：US10758898

申请日：2004-01-16

申请人： Ram Thakur ,  Mohan Kuvettu ,  Biswanath Sarkar ,  Venkatachalam Krishnan ,  Mitra Patel ,  Sanjay Ray ,  Gopal Ravichandran ,  Satish Makhija ,  Sobhan Ghosh

发明人： Ram Thakur ,  Mohan Kuvettu ,  Biswanath Sarkar ,  Venkatachalam Krishnan ,  Mitra Patel ,  Sanjay Ray ,  Gopal Ravichandran ,  Satish Makhija ,  Sobhan Ghosh

IPC分类号： C01B39/02 ,  C01B39/14 ,  C01B39/20 ,  C01B39/26

CPC分类号： C01B39/14 ,  C01B39/02 ,  C01B39/20 ,  C01B39/26

摘要： The present invention relates to a process for enhancing the yield of molecular sieve zeolite during the synthesis from a sodium aluminosilicate reaction mixture, said process comprising the step of adding at an intermediate stage of crystallization a source of aluminum to the sodium aluminosilicate reaction mixture and allowing the mixture to crystallize.

摘要翻译： 本发明涉及一种在由铝硅酸钠反应混合物合成过程中提高分子筛沸石的产率的方法，所述方法包括在中间阶段将铝源加入到硅铝酸钠反应混合物中并允许 混合物结晶。

公开(公告)号：US20070059238A1

公开(公告)日：2007-03-15

申请号：US11442871

申请日：2006-05-30

申请人： Ram Thakur ,  Mohan Kuvettu ,  Biswanath Sarkar ,  Venkatachalam Krishnan ,  Mitra Patel ,  Sanjay Ray ,  Gopal Ravichandran ,  Satish Makhija ,  Sobhan Ghosh

发明人： Ram Thakur ,  Mohan Kuvettu ,  Biswanath Sarkar ,  Venkatachalam Krishnan ,  Mitra Patel ,  Sanjay Ray ,  Gopal Ravichandran ,  Satish Makhija ,  Sobhan Ghosh

IPC分类号： C01B39/00

CPC分类号： C01B39/02 ,  C01B39/14 ,  C01B39/20 ,  C01B39/26

摘要： The present invention relates to a process for enhancing the yield of molecular sieve zeolite during the synthesis from a sodium aluminosilicate reaction mixture, said process comprising the step of adding at an intermediate stage of crystallization a source of aluminum to the sodium aluminosilicate reaction mixture and allowing the mixture to crystallize.

摘要翻译： 本发明涉及一种在由铝硅酸钠反应混合物合成过程中提高分子筛沸石的产率的方法，所述方法包括在中间阶段将铝源加入到硅铝酸钠反应混合物中并允许 混合物结晶。

公开(公告)号：US06864202B2

公开(公告)日：2005-03-08

申请号：US10282898

申请日：2002-10-29

申请人： Biswanath Sarkar ,  Ram Mohan Thakur ,  Nagesh Samant ,  Mohan Kuvettu Prabhu ,  Ravichandran Gopal ,  Mitra Bhanu Patel ,  Sanjay Kumar Ray ,  Krishnan Venkatachalam ,  Satish Makhija ,  Sobhan Ghosh

发明人： Biswanath Sarkar ,  Ram Mohan Thakur ,  Nagesh Samant ,  Mohan Kuvettu Prabhu ,  Ravichandran Gopal ,  Mitra Bhanu Patel ,  Sanjay Kumar Ray ,  Krishnan Venkatachalam ,  Satish Makhija ,  Sobhan Ghosh

IPC分类号： B01J29/06 ,  B01J37/00 ,  B01J29/08

CPC分类号： B01J29/06 ,  B01J37/0009 ,  B01J2229/42

摘要： The present invention relates to an improved process for obtaining sodium silicate alkali solution depleted of sodium salt and enriched in silica from a mother liquor recovered after isolation of molecular sieves and more particularly, the present invention relates to a process for recycling mother liquor obtained after the isolation of molecular sieves for the preparation of fresh molecular sieves or as a binder for producing Fluid Catalytic Cracking (FCC) catalyst.

摘要翻译： 本发明涉及一种用于从分离筛分离后回收的母液中获得不含钠盐并富集二氧化硅的硅酸钠碱溶液的改进方法，更具体地说，本发明涉及一种在 隔离用于制备新鲜分子筛的分子筛或用作制备流体催化裂化（FCC）催化剂的粘合剂。

公开(公告)号：US07517827B2

公开(公告)日：2009-04-14

申请号：US11506405

申请日：2006-08-17

申请人： Gopal Ravichandran ,  Biswanath Sarkar ,  Mohan P. Kuvettu ,  Deepa Megavathu ,  Sanjay K Ray ,  Shiba P. Choudhury ,  Sudipta Roy ,  Venkatachalam Krishnan ,  Satish Makhija

发明人： Gopal Ravichandran ,  Biswanath Sarkar ,  Mohan P. Kuvettu ,  Deepa Megavathu ,  Sanjay K Ray ,  Shiba P. Choudhury ,  Sudipta Roy ,  Venkatachalam Krishnan ,  Satish Makhija

IPC分类号： B01J29/06

CPC分类号： C10G11/05 ,  B01J21/16 ,  B01J29/06 ,  B01J29/18 ,  B01J29/40 ,  B01J29/65 ,  B01J29/70 ,  B01J29/7007 ,  B01J35/023 ,  B01J37/0045 ,  B01J2229/20 ,  B01J2229/38 ,  B01J2229/42

摘要： The present invention relates to a cracking catalyst composition for cracking heavy hydrocarbon and processes for preparing the catalyst. The process can include treating zeolite with sodium free basic compound with or without phosphate, treating an alumina with a dilute acid, acidifying a colloidal silica, preparing a fine slurry of clay with a source of phosphate, adding alumina slurry and/or acidified colloidal silica to clay phosphate slurry, adding treated zeolite and spray-drying the slurry and calcining the same to obtain a cracking catalyst having adequate ABD and attrition resistance property.

摘要翻译： 本发明涉及一种用于裂解重质烃的裂化催化剂组合物及其制备方法。 该方法可以包括用含有或不含磷酸盐的无钠碱性化合物处理沸石，用稀酸处理氧化铝，酸化胶体二氧化硅，用磷酸盐源制备粘土的细浆料，加入氧化铝浆料和/或酸化胶体二氧化硅 加入处理过的沸石并喷雾干燥浆料并煅烧，得到具有足够ABD和耐磨性的裂化催化剂。

公开(公告)号：US20070203017A1

公开(公告)日：2007-08-30

申请号：US11506405

申请日：2006-08-17

申请人： Gopal Ravichandran ,  Biswanath Sarkar ,  Mohan P. Kuvettu ,  Deepa Megavathu ,  Sanjay K. Ray ,  Shiba P. Choudhury ,  Sudipta Roy ,  Venkatachalam Krishnan ,  Satish Makhija

发明人： Gopal Ravichandran ,  Biswanath Sarkar ,  Mohan P. Kuvettu ,  Deepa Megavathu ,  Sanjay K. Ray ,  Shiba P. Choudhury ,  Sudipta Roy ,  Venkatachalam Krishnan ,  Satish Makhija

IPC分类号： B01J29/06

CPC分类号： C10G11/05 ,  B01J21/16 ,  B01J29/06 ,  B01J29/18 ,  B01J29/40 ,  B01J29/65 ,  B01J29/70 ,  B01J29/7007 ,  B01J35/023 ,  B01J37/0045 ,  B01J2229/20 ,  B01J2229/38 ,  B01J2229/42

摘要： The present invention relates to a cracking catalyst composition for cracking heavy hydrocarbon and processes for preparing the catalyst. The process can include treating zeolite with sodium free basic compound with or without phosphate, treating an alumina with a dilute acid, acidifying a colloidal silica, preparing a fine slurry of clay with a source of phosphate, adding alumina slurry and/or acidified colloidal silica to clay phosphate slurry, adding treated zeolite and spray-drying the slurry and calcining the same to obtain a cracking catalyst having adequate ABD and attrition resistance property.

摘要翻译： 本发明涉及一种用于裂解重质烃的裂化催化剂组合物及其制备方法。 该方法可以包括用含有或不含磷酸盐的无钠碱性化合物处理沸石，用稀酸处理氧化铝，酸化胶体二氧化硅，用磷酸盐源制备粘土的细浆料，加入氧化铝浆料和/或酸化胶体二氧化硅 加入处理过的沸石并喷雾干燥浆料并煅烧，得到具有足够ABD和耐磨性的裂化催化剂。

公开(公告)号：US07968079B2

公开(公告)日：2011-06-28

申请号：US11970780

申请日：2008-01-08

申请人： Biswanath Sarkar ,  Kapil Arya ,  Gopal Ravichandran ,  Mohan Prabhu Kuvettu ,  Shiba Prasad Choudhury ,  Venkatachalam Krishnan ,  Sanjay Kumar Ray ,  Jayaraj Christopher ,  Satish Makhija

发明人： Biswanath Sarkar ,  Kapil Arya ,  Gopal Ravichandran ,  Mohan Prabhu Kuvettu ,  Shiba Prasad Choudhury ,  Venkatachalam Krishnan ,  Sanjay Kumar Ray ,  Jayaraj Christopher ,  Satish Makhija

IPC分类号： C01B39/20

CPC分类号： B01J29/084 ,  C01B33/20 ,  C01B39/20

摘要： The present disclosure provides a ready-to-use seed composition water, a source of silica, a source of alumina, and Na20, wherein the molar ratio of H20:Na20 ranges from 5 to 20, Na20:SiO2 ranges from 0.4 to 5 and SiO2:Al203 ranges from 1.3 to 5 used in the preparation of a synthetic faujasite zeolite which has high thermal stability and higher crystallite size. It further provides a process for preparing the ready-to-use seed composition for preparation of synthetic faujasite zeolite that requires lower crystallization time. The present disclosure provides a seed composition that does not require maturing time and a reaction gel composition that has low water and soda content. The present disclosure further provides a process for the preparation of synthetic faujasite zeolite by blending seed and reaction gel reaction composition to form a seed gel composition and subjecting it to crystallization.

摘要翻译： 本公开提供了即用型种子组合物水，二氧化硅源，氧化铝源和Na 2 O，其中H 2 O:Na 2的摩尔比为5至20，Na 2 O:SiO 2的范围为0.4至5，以及 SiO 2：Al 2 O 3在用于制备具有高热稳定性和较高微晶尺寸的合成八面沸石沸石中使用的范围为1.3至5。 它还提供了一种制备即用型种子组合物的方法，该种子组合物用于制备需要较低结晶时间的合成八面沸石沸石。 本公开提供了不需要熟化时间的种子组合物和具有低水和苏打含量的反应凝胶组合物。 本公开还提供了通过混合种子和反应凝胶反应组合物来制备合成八面沸石沸石以形成种子凝胶组合物并使其结晶的方法。

公开(公告)号：US06613710B2

公开(公告)日：2003-09-02

申请号：US09961384

申请日：2001-09-25

申请人： Sanjay Kumar Ray ,  Mohan Prabhu Kuvettu ,  Venkatchalam Krishnan ,  Gopal Ravichandran ,  Kamlesh Gupta ,  Sukumar Mandal ,  Satish Makhija ,  Sobhan Ghosh ,  Arumugam Velayutham Karthikeyani ,  Mitra Bhanu Patel

发明人： Sanjay Kumar Ray ,  Mohan Prabhu Kuvettu ,  Venkatchalam Krishnan ,  Gopal Ravichandran ,  Kamlesh Gupta ,  Sukumar Mandal ,  Satish Makhija ,  Sobhan Ghosh ,  Arumugam Velayutham Karthikeyani ,  Mitra Bhanu Patel

IPC分类号： B01J2116

CPC分类号： B01J37/0045 ,  B01J21/04 ,  B01J21/16 ,  B01J29/40 ,  B01J29/7007 ,  B01J35/002 ,  B01J2229/42 ,  C10G11/05

摘要： A process for preparing bi-functional catalyst for Fluid Catalytic Cracking (FCC), that comprises molecular sieves, modified clay and semi-basic alumina and the catalyst for highly effective cracking of high boiling petroleum feedstock to provide simultaneously, enhanced yields of Liquefied Petroleum Gas (LPG) and reduction of undesirable bottoms.

公开(公告)号：US07462275B2

公开(公告)日：2008-12-09

申请号：US10894341

申请日：2004-07-20

申请人： Asit Kumar Das ,  Debasis Bhattacharyya ,  Gadari Saidulu ,  Satayen Kumar Das ,  Bandaru Venkata Hari P. Gupta ,  Ramakrishnan Ramanarayanan ,  Latoor Lal Saroya ,  Konduri Lakshminarayana ,  Marri Rama Rao ,  Vinod Ramchandra Upadhyay ,  Sukumar Mandal ,  Deepa Meghavathu ,  Arumugam Velayutham Karthikeyani ,  Wadharwa Ram Kalsi ,  Arvind Pratap Singh ,  Veena Bansal ,  Ashok Kumar Tiwari ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raghunath Raje

发明人： Asit Kumar Das ,  Debasis Bhattacharyya ,  Gadari Saidulu ,  Satayen Kumar Das ,  Bandaru Venkata Hari P. Gupta ,  Ramakrishnan Ramanarayanan ,  Latoor Lal Saroya ,  Konduri Lakshminarayana ,  Marri Rama Rao ,  Vinod Ramchandra Upadhyay ,  Sukumar Mandal ,  Deepa Meghavathu ,  Arumugam Velayutham Karthikeyani ,  Wadharwa Ram Kalsi ,  Arvind Pratap Singh ,  Veena Bansal ,  Ashok Kumar Tiwari ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raghunath Raje

IPC分类号： C10G67/00

CPC分类号： C10G11/05 ,  C10G2400/28

摘要： The present invention relates to a process for the conversion of hydrocarbon streams with 95% true boiling point less than 400° C. to very high yield of liquefied petroleum gas in the range of 45-65 wt % of feed and high octane gasoline, the said process comprises catalytic cracking of the hydrocarbons using a solid fluidizable catalyst comprising a medium pore crystalline alumino-silicates with or without Y-zeolite, non crystalline acidic materials or combinations thereof in a fluidized dense bed reactor operating at a temperature range of 400 to 550° C., pressure range of 2 to 20 kg/cm2 (g) and weight hourly space velocity in range of 0.1 to 20 hour−1, wherein the said dense bed reactor is in flow communication to a catalyst stripper and a regenerator for continuous regeneration of the coked catalyst in presence of air and or oxygen containing gases, the catalyst being continuously circulated between the reactor-regenerator system.

摘要翻译： 本发明涉及一种将95％真实沸点低于400℃的烃流转化成非常高产率的进料和高辛烷值汽油的45-65重量％的液化石油气的方法， 所述方法包括使用固体可流化催化剂催化裂化烃，所述固体可流化催化剂包含具有或不具有Y-沸石的中孔结晶铝硅酸盐，非结晶酸性物质或其组合，其在400至550℃的温度范围内操作的流化密床反应器 ℃，压力范围为2至20kg / cm2（g）和0.1至20小时-1范围内的重时空速，其中所述致密床反应器与用于连续的催化剂汽提塔和再生器流动连通 在存在空气和/或含氧气体的情况下再生焦化的催化剂，催化剂在反应器 - 再生器系统之间连续循环。

公开(公告)号：US06858556B2

公开(公告)日：2005-02-22

申请号：US10084637

申请日：2002-02-25

申请人： Mohan Prabhu Kuvettu ,  Sanjay Kumar Ray ,  Gopal Ravichandran ,  Venkatchalam Krishnan ,  Satyen Kumar Das ,  Satish Makhija ,  Sobhan Ghosh

发明人： Mohan Prabhu Kuvettu ,  Sanjay Kumar Ray ,  Gopal Ravichandran ,  Venkatchalam Krishnan ,  Satyen Kumar Das ,  Satish Makhija ,  Sobhan Ghosh

IPC分类号： B01J29/08 ,  B01J29/40 ,  B01J29/80 ,  C10G11/05 ,  B01J29/18

CPC分类号： C10G11/05 ,  B01J29/088 ,  B01J29/40 ,  B01J29/80 ,  B01J2229/26 ,  B01J2229/36 ,  B01J2229/42

摘要： A process for the preparation of a stabilized dual zeolite catalyst-comprising two types of zeolites, a low silica molecular sieve and a stabilized high silica zeolite is disclosed. The catalyst is useful for cracking heavier hydrocarbons into lighter useful products.

摘要翻译： 公开了一种制备稳定的双沸石催化剂的方法，其包括两种类型的沸石，低二氧化硅分子筛和稳定的高二氧化硅沸石。 该催化剂可用于将较重的烃开裂成更有用的产品。

公开(公告)号：US07604731B2

公开(公告)日：2009-10-20

申请号：US10892024

申请日：2004-07-15

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

发明人： Debasis Bhattacharyya ,  Satheesh Vetterkunnel Kumaran ,  Bandaru Venkata Hari Prasad Gupta ,  Pramod Kumar ,  Asit Kumar Das ,  Gadari Saidulu ,  Satyen Kumar Das ,  Gurpreet Singh Kapur ,  Veena Bansal ,  Venkatachalam Krishnan ,  Satish Makhija ,  Sobhan Ghosh ,  Niranjan Raghunath 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 / cm2的压力范围内以分离容易结合的材料，将裂化产物在骤冷塔和蒸馏塔中分离，然后对来自骤冷塔的底部的烃馏分和具有 取决于某些特征参数与第二个均热塔中的热裂解在460至540℃的温度下，从蒸馏塔和/或任何其它合适的较重烃流中的沸点在380至480℃范围内 在蒸汽的形成中间相含碳结构的添加量存在下，在2至20kg / cm2的范围内的压力，在汽提和 冷却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，在25至525℃的温度范围内测量石墨伪影。