Patents by Inventor Sobhan Ghosh
Sobhan Ghosh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7604731Abstract: 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.Type: GrantFiled: July 15, 2004Date of Patent: October 20, 2009Assignee: Indian Oil Corporation LimitedInventors: 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
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Patent number: 7462275Abstract: 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.Type: GrantFiled: July 20, 2004Date of Patent: December 9, 2008Assignee: Indian Oil Corporation LimitedInventors: 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
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Patent number: 7381322Abstract: This invention provides a resid cracking apparatus comprising a riser, reactor, stripper cum separator with adjustable outlets in flow communication with adsorbent and catalyst regenerators for converting hydrocarbon residues containing higher concentration of conradson carbon content, poisonous metals such as nickel & vanadium and basic nitrogen etc., into lighter and valuable products and a process thereof.Type: GrantFiled: November 4, 2005Date of Patent: June 3, 2008Assignee: Indian Oil Corporation LimitedInventors: Kasliwal Pankaj, Rama Rao Marri, Dixit Jagdev Kumar, Saroya Latoor Lal, Sukumar Mandal, Satish Makhija, Sobhan Ghosh
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Publication number: 20070181462Abstract: 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.Type: ApplicationFiled: July 15, 2004Publication date: August 9, 2007Inventors: 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
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Publication number: 20070059238Abstract: 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.Type: ApplicationFiled: May 30, 2006Publication date: March 15, 2007Inventors: Ram Thakur, Mohan Kuvettu, Biswanath Sarkar, Venkatachalam Krishnan, Mitra Patel, Sanjay Ray, Gopal Ravichandran, Satish Makhija, Sobhan Ghosh
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Publication number: 20060096890Abstract: This invention provides a resid cracking apparatus comprising a riser, reactor, stripper cum separator with adjustable outlets in flow communication with adsorbent and catalyst regenerators for converting hydrocarbon residues containing higher concentration of conradson carbon content, poisonous metals such as nickel & vanadium and basic nitrogen etc., into lighter and valuable products and a process thereof.Type: ApplicationFiled: November 4, 2005Publication date: May 11, 2006Applicant: Indian Oil Corporation LimitedInventors: Kawliwal Pankaj, Rama Marri, Dixit Kumar, Saroya Lal, Sukumar Mandal, Satish Makhija, Sobhan Ghosh
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Patent number: 7029571Abstract: According to this invention, there is provided a process and apparatus for catalytic cracking of various petroleum based heavy feed stocks in the presence of solid zeolite catalyst and high pore size acidic components for selective bottom cracking and mixtures thereof, in multiple riser type continuously circulating fluidized bed reactors operated at different severities to produce high yield of middle distillates, in the range of 50–65 wt % of fresh feed.Type: GrantFiled: February 16, 2000Date of Patent: April 18, 2006Assignee: Indian Oil Corporation LimitedInventors: Debasis Bhattacharyya, Asit Kumar Das, Arumugam Velayutham Karthikeyani, Satyen Kumar Das, Pankaj Kasliwal, Manoranjan Santra, Latoor Lal Saroya, Jagdev Kumar Dixit, Ganga Sanker Mishra, Jai Prakash Singh, Satish Makhija, Sobhan Ghosh
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Patent number: 7008595Abstract: This invention provides a resid cracking apparatus comprising a riser, reactor, stripper cum separator with adjustable outlets in flow communication with adsorbent and catalyst regenerators for converting hydrocarbon residues containing higher concentration of conradson carbon content, poisonous metals such as nickel & vanadium and basic nitrogen etc., into lighter and valuable products and a process thereof.Type: GrantFiled: May 8, 2002Date of Patent: March 7, 2006Assignee: Indian Oil Corporation LimitedInventors: Kawliwal Pankaj, Rama Rao Marri, Dixit Jagdev Kumar, Saroya Latoor Lal, Sukumar Mandal, Satish Makhija, Sobhan Ghosh
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Publication number: 20060016725Abstract: 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.Type: ApplicationFiled: July 20, 2004Publication date: January 26, 2006Inventors: Asit Das, Debasis Bhattacharyya, Gadari Saidulu, Satayen Das, Bandaru Gupta, Ramakrishnan Ramanarayanan, Latoor Saroya, Konduri Lakshminarayana, Marri Rao, Vinod Upadhyay, Sukumar Mandal, Deepa Meghavathu, Arumugam Karthikeyani, Wadharwa Kalsi, Arvind Singh, Veena Bansal, Ashok Tiwari, Venkatachalam Krishnan, Satish Makhija, Sobhan Ghosh, Niranjan Raje
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Publication number: 20050284793Abstract: 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.Type: ApplicationFiled: July 15, 2004Publication date: December 29, 2005Inventors: 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
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Publication number: 20050158237Abstract: 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.Type: ApplicationFiled: January 16, 2004Publication date: July 21, 2005Applicant: INDIAN OIL CORPORATION LIMITEDInventors: Ram Thakur, Mohan Kuvettu, Biswanath Sarkar, Venkatachalam Krishnan, Mitra Patel, Sanjay Ray, Gopal Ravichandran, Satish Makhija, Sobhan Ghosh
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Process for preparing sodium silicate alkali solution depleted of sodium salt and enriched in silica
Patent number: 6864202Abstract: 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.Type: GrantFiled: October 29, 2002Date of Patent: March 8, 2005Assignee: Indian Oil Corporation LimitedInventors: Biswanath Sarkar, Ram Mohan Thakur, Nagesh Samant, Mohan Kuvettu Prabhu, Ravichandran Gopal, Mitra Bhanu Patel, Sanjay Kumar Ray, Krishnan Venkatachalam, Satish Makhija, Sobhan Ghosh -
Patent number: 6858556Abstract: 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.Type: GrantFiled: February 25, 2002Date of Patent: February 22, 2005Assignee: Indian Oil Corporation LimitedInventors: Mohan Prabhu Kuvettu, Sanjay Kumar Ray, Gopal Ravichandran, Venkatchalam Krishnan, Satyen Kumar Das, Satish Makhija, Sobhan Ghosh
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Process for preparing sodium silicate alkali solution depleted of sodium salt and enriched in silica
Publication number: 20040053773Abstract: 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.Type: ApplicationFiled: October 29, 2002Publication date: March 18, 2004Inventors: Biswanath Sarkar, Ram Mohan Thakur, Nagesh Samant, Mohan Kuvettu Prabhu, Ravichandran Gopal, Mitra Bhanu Patel, Sanjay Kumar Ray, Krishnan Venkatachalam, Satish Makhija, Sobhan Ghosh -
Publication number: 20030211017Abstract: This invention provides a resid cracking apparatus comprising a riser, reactor, stripper cum separator with adjustable outlets in flow communication with adsorbent and catalyst regenerators for converting hydrocarbon residues containing higher concentration of conradson carbon content, poisonous metals such as nickel & vanadium and basic nitrogen etc., into lighter and valuable products and a process thereof.Type: ApplicationFiled: May 8, 2002Publication date: November 13, 2003Inventors: Kawliwal Pankaj, Rama Rao Marri, Dixit Jagdev Kumar, Saroya Latoor Lal, Sukumar Mandal, Satish Makhija, Sobhan Ghosh
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Publication number: 20030166453Abstract: The present invention relates to a stabilized dual zeolite catalyst for cracking heavier hydrocarbons into lighter useful products said catalyst comprising two types of zeolites viz., low silica molecular sieve and stabilized high silica zeolite, silica-alumina based binder and kaolin clay and a process for the preparation of the stabilized dual zeolite catalyst.Type: ApplicationFiled: February 25, 2002Publication date: September 4, 2003Inventors: Mohan Prabhu Kuvettu, Sanjay Kumar Ray, Gopal Ravichandran, Venkatchalam Krishnan, Satyen Kumar Das, Satish Makhija, Sobhan Ghosh
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Patent number: 6613710Abstract: 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.Type: GrantFiled: September 25, 2001Date of Patent: September 2, 2003Assignee: Indian Oil Corporation LimitedInventors: Sanjay Kumar Ray, Mohan Prabhu Kuvettu, Venkatchalam Krishnan, Gopal Ravichandran, Kamlesh Gupta, Sukumar Mandal, Satish Makhija, Sobhan Ghosh, Arumugam Velayutham Karthikeyani, Mitra Bhanu Patel
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Publication number: 20030069126Abstract: 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.Type: ApplicationFiled: September 25, 2001Publication date: April 10, 2003Inventors: Sanjay Kumar Ray, Mohan Prabhu Kuvettu, Venkatchalam Krishnan, Gopal Ravichandran, Kamlesh Gupta, Sukumar Mandal, Satish Makhija, Sobhan Ghosh, Arumugam Velayutham Karthikeyani, Mitra Bhanu Patel
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Patent number: 6540904Abstract: The present invention provides a process for the upgradation of petroleum residue into useful fractions by subjecting petroleum residue in the presence of a solvent and ferrous sulphate catalyst to a pressure in the range of 10 atm. to 120 atm., temperature in the range of 380-420° C., for a period in the range of 0-120 minutes, in a reactor vessel, in an inert atmosphere. The charge is then cooled to room temperature and the product gas released through scrubbers. The residue is re-heated, if required, for free flow of liquid product. The resulting liquid product is distilled to obtain useful fractions.Type: GrantFiled: March 3, 2000Date of Patent: April 1, 2003Inventors: Suhas Ranjan Gun, Priya Bandhu Chowdhury, Kashi Nath Bhattacharya, Achinta Kumar Roy, Umanand Sharma, Swapan Kumar Ghosh, Awadhesh Kumar Sinha, Santosh Kumar Chanda, Sukumar Mandal, Sanjay Kumar Ray, Asit Kumar Das, Satish Makhija, Sobhan Ghosh, Akhilesh Kumar Bhatnagar
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Patent number: 6528447Abstract: A process for preparing a hydrocarbon conversion catalyst for use in a Fluid Catalyst Cracking (FCC) unit includes the steps of preparing a modified alumina-silica composite by reacting alumina with an acid to obtain an acidified alumina, aging the acidified alumina for from 0.25 to 60 hours, adding a silica source to the acidified alumina to obtain the composite; preparing a dispersed precursor slurry of the modified alumina-silica composite, and a rare earth exchanged USY zeolite (REUSY) containing at least one rare earth oxide present in an amount ranging from 3.8 to 4.0 wt %, and optionally kaolin clay; spray-drying the slurry to obtain spherical particles; and subjecting the spherical particles to calcination.Type: GrantFiled: March 19, 1999Date of Patent: March 4, 2003Assignee: Indian Oil Corporation LimitedInventors: Sobhan Ghosh, Satish Makhija, Venkatachalam Krishnan, Sanjay Kumar Ray, Mohan Prabhu Kuvettu