Patents by Inventor Sateesh Daggupati
Sateesh Daggupati 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: 11945728Abstract: A process for obtaining vanadium component in the form of vanadium oxide from gasifier slag is disclosed. The process comprises pulverizing the slag to obtain pulverized slag, which is blended with water and an alkali salt to obtain a slurry. The slurry is dried and then roasted in the presence of air to obtain a roasted slag. The roasted slag is leached to obtain a first filtrate comprising the vanadium component. The first filtrate is reacted with a magnesium salt to remove a silica component in the form of a precipitate. The silica free second filtrate is reacted with an ammonium salt to obtain ammonium metavanadate, which is further calcined to obtain the significant amount of vanadium pentoxide (V2O5).Type: GrantFiled: April 3, 2019Date of Patent: April 2, 2024Assignee: Reliance Industries LimitedInventors: Sateesh Daggupati, Sachchit Majhi, Sukumar Mandal, Asit Kumar Das, Vipulkumar Rameshbhai Panchotia, Mehul Bharatbhai Joshi, Gopal Ravichandran, Praveen Kumar Chinthala, Swapan Kumar Ghosh, Ajit Vishwanath Sapre
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Patent number: 11879165Abstract: The present disclosure relates to a process for recovering vanadium in the form of iron vanadate from a gasifier slag. The process comprises pulverizing the slag to obtain pulverized slag (2). The pulverized slag (2) is soaked in water (6) and an alkali salt (4) to obtain a slurry (8), followed by roasting the slurry in the presence of air to obtain roasted slag (12) which is leached (14) to obtain a first solution (18). The first solution (18) is heated at a temperature in the range of 60° C. to 80° C. while adding an iron salt (17) in an amount in the range of 10 wt % to 60 wt % at a pH in the range of 4 to 10, to obtain a second solid residue (21) which is dried to obtain iron vanadate (24).Type: GrantFiled: February 9, 2019Date of Patent: January 23, 2024Assignee: Reliance Industries LimitedInventors: Sateesh Daggupati, Sachchit Majhi, Sukumar Mandal, Asit Kumar Das, Vishwanath Sapre Ajit
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Patent number: 11643609Abstract: The present disclosure relates to a process and a system for producing synthesis gas. The carbonaceous feedstock is gasified, in the presence of at least one of oxygen and steam, in a first reactor to obtain a gaseous mixture comprising H2, CO, CH4, CO2, H2O, tar and char. The gaseous mixture is treated in a second reactor, in the presence of a catalyst, to obtain synthesis gas. The system comprises a first reactor, a connecting conduit, a second reactor, at least one cyclone separator, at least one heat exchanger and at least one synthesis gas filter unit. The process and the system of the present disclosure are capable of producing synthesis gas with comparatively higher conversion of the unreacted char.Type: GrantFiled: August 4, 2017Date of Patent: May 9, 2023Assignee: RELIANCE INDUSTRIES LIMITEDInventors: Sateesh Daggupati, Clifton Gregg Keeler, Sukumar Mandal, Asit Kumar Das, Sachchit Kumar Majhi, Ajay Gupta, Ajit Vish Sapre
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Patent number: 11383227Abstract: The present disclosure relates to a hydrothermally stable catalyst composition. The hydrothermally stable supported catalyst composition comprises K2CO3 impregnated on an amorphous silica-alumina support. The weight ratio of silica to alumina in the support is in the range of 0.1 to 1.5. The amount of K2CO3 is in the range of 5 wt % to 60 wt % with respect to the total catalyst composition. The catalyst composition is characterized by a pore volume in the range of 0.1 cc/g to 0.9 cc/g, a surface area in the range of 40 m2/g to 250 m2/g and an attrition index in the range of 2% to 8%. The present disclosure also relates to a process for preparing the catalyst composition. The catalyst composition provides improved hydrothermal stability, attrition resistance, high pore volume and surface area for gasifying carbonaceous feed at low temperature, as compared to a conventional catalyst composition.Type: GrantFiled: September 6, 2017Date of Patent: July 12, 2022Assignee: RELIANCE INDUSTRIES LIMITEDInventors: Sukumar Mandal, Sateesh Daggupati, Sachchit Kumar Majhi, Asit Kumar Das
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Patent number: 11319493Abstract: The present disclosure provides a method for catalytic conversion of waste plastic into liquid fuel. The method comprises thermally decomposing the waste plastic at a temperature in the range of 350 to 650° C. and under a pressure in the range of 0.0010 psi to 0.030 psi, to obtain a gaseous stream. The gaseous stream is further subjected to four stage sequential cooling to a temperature in the range of ?5 to ?15° C. to obtain a gas-liquid mixture comprising a gaseous fraction and a liquid fraction. The gas-liquid mixture is fed to the gas-liquid separator to obtain the gaseous fraction comprising C1 to C4 hydrocarbons and the liquid fraction comprising liquid fuel. The method of the present disclosure is simple, economical and energy efficient, which provides a high value liquid fuel with enhanced yield.Type: GrantFiled: August 28, 2019Date of Patent: May 3, 2022Assignee: Reliance Industries LimitedInventors: Sateesh Daggupati, Sayani Thakur, Sachchit Majhi, Sukumar Mandal, Asit Kumar Das, Vishwanath Sapre Ajit
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Publication number: 20210348061Abstract: The present disclosure provides a method for catalytic conversion of waste plastic into liquid fuel. The method comprises thermally decomposing the waste plastic at a temperature in the range of 350 to 650° C. and under a pressure in the range of 0.0010 psi to 0.030 psi, to obtain a gaseous stream. The gaseous stream is further subjected to four stage sequential cooling to a temperature in the range of ?5 to ?15° c. to obtain a gas-liquid mixture comprising a gaseous fraction and a liquid fraction. The gas-liquid mixture is fed to the gas-liquid separator to obtain the gaseous fraction comprising C1 to C4 hydrocarbons and the liquid fraction comprising liquid fuel. The method of the present disclosure is simple, economical and energy efficient, which provides a high value liquid fuel with enhanced yield.Type: ApplicationFiled: August 28, 2019Publication date: November 11, 2021Applicant: Reliance Industries LimitedInventors: Sateesh Daggupati, Sayani Thakur, Sachchit Majhi, Sukumar Mandal, Asit Kumar Das, Vishwanath Sapre Ajit
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Publication number: 20210283585Abstract: The present disclosure relates to a hydrothermally stable catalyst composition. The hydrothermally stable supported catalyst composition comprises K2CO3 impregnated on an amorphous silica-alumina support. The weight ratio of silica to alumina in the support is in the range of 0.1 to 1.5. The amount of K2CO3 is in the range of 5 wt % to 60 wt % with respect to the total catalyst composition. The catalyst composition is characterized by a pore volume in the range of 0.1 cc/g to 0.9 cc/g, a surface area in the range of 40 m2/g to 250 m2/g and an attrition index in the range of 2% to 8%. The present disclosure also relates to a process for preparing the catalyst composition. The catalyst composition provides improved hydrothermal stability, attrition resistance, high pore volume and surface area for gasifying carbonaceous feed at low temperature, as compared to a conventional catalyst composition.Type: ApplicationFiled: September 6, 2017Publication date: September 16, 2021Applicant: Reliance Industries LimitedInventors: Sukumar Mandal, Sateesh Daggupati, Sachchit Kumar Majhi, Asit Kumar Das
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Publication number: 20210017038Abstract: A process for obtaining vanadium component in the form of vanadium oxide from gasifier slag is disclosed. The process comprises pulverizing the slag to obtain pulverized slag, which is blended with water and an alkali salt to obtain a slurry. The slurry is dried and then roasted in the presence of air to obtain a roasted slag. The roasted slag is leached to obtain a first filtrate comprising the vanadium component. The first filtrate is reacted with a magnesium salt to remove a silica component in the form of a precipitate. The silica free second filtrate is reacted with an ammonium salt to obtain ammonium metavanadate, which is further calcined to obtain the significant amount of vanadium pentoxide (V2O5).Type: ApplicationFiled: April 3, 2019Publication date: January 21, 2021Applicant: Reliance Industries LimitedInventors: Sateesh Daggupati, Sachchit Majhi, Sukumar Mandal, Asit Kumar Das, Vipulkumar Rameshbhai Panchotia, Mehul Bharatbhai Joshi, Gopal Ravichandran, Praveen Kumar Chinthala, Swapan Kumar Ghosh, Vishwanath Sapre Ajit
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Publication number: 20200370145Abstract: The present disclosure relates to a process for recovering vanadium in the form of iron vanadate from a gasifier slag. The process comprises pulverizing the slag to obtain pulverized slag (2). The pulverized slag (2) is soaked in water (6) and an alkali salt (4) to obtain a slurry (8), followed by roasting the slurry in the presence of air to obtain roasted slag (12) which is leached (14) to obtain a first solution (18). The first solution (18) is heated at a temperature in the range of 60° C. to 80° C. while adding an iron salt (17) in an amount in the range of 10 wt % to 60 wt % at a pH in the range of 4 to 10, to obtain a second solid residue (21) which is dried to obtain iron vanadate (24).Type: ApplicationFiled: February 9, 2019Publication date: November 26, 2020Applicant: Reliance Industries LimitedInventors: Sateesh Daggupati, Sachchit Majhi, Sukumar Mandal, Asit Kumar Das, Vishwanath Sapre Ajit
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Publication number: 20190169513Abstract: The present disclosure relates to a process and a system for producing synthesis gas. The carbonaceous feedstock is gasified, in the presence of at least one of oxygen and steam, in a first reactor to obtain a gaseous mixture comprising H2, CO, CH4, CO2, H2O, tar and char. The gaseous mixture is treated in a second, reactor, in the presence of a catalyst, to obtain synthesis gas. The system comprises a first reactor, a connecting conduit, a second reactor, at least one cyclone separator, at least one heat exchanger and at least one synthesis gas filter unit. The process and the system of the present disclosure are capable of producing synthesis gas with comparatively higher conversion of the unreacted char.Type: ApplicationFiled: August 4, 2017Publication date: June 6, 2019Applicant: RELIANCE INDUSTRIES LIMITEDInventors: Sateesh DAGGUPATI, Clifton Gregg KEELER, Sukumar MANDAL, Asit Kumar DAS, Sachchit Kumar MAJHI, Ajay GUPTA, Ajit Vish SAPRE
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Patent number: 10208262Abstract: An improved process for the catalytic gasification of a carbonaceous feedstock in a dual fluidized bed reactor for producing synthesis gas is disclosed. The disclosure uses ?-alumina as a catalyst support i and heat carrier in the gasification zone (102). The gasification zone (102) is operated at 700-750° C. to prevent substantial conversion of ?-alumina to ?-alumina, which would manifest in the enablement of high catalyst loading and high recyclability. The catalyst is an alkali metal, preferably K2CO3, so that conversion proportional to total K2CO3 to solid carbon ratio is achieved with as high K2CO3 loading as 50 wt % on the solid support. The combustion zone (140) is operated at 800°-840° C., to prevent any conversion of the ?-alumina to ?-alumina, so that catalyst recyclability of up to 98% is achieved between two successive cycles.Type: GrantFiled: December 18, 2013Date of Patent: February 19, 2019Assignee: Reliance Industries LimitedInventors: Sateesh Daggupati, Sukumar Mandal, Asit Kumar Das, Ajit Vishwanath Sapre
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Publication number: 20150361362Abstract: An improved process for the catalytic gasification of a carbonaceous feedstock in a dual fluidized bed reactor for producing synthesis gas is disclosed. The disclosure uses ?-alumina as a catalyst support iand heat carrier in the gasification zone (102). The gasification zone (102) is operated at 700-750° C. to prevent substantial conversion of ?-alumina to ?-alumina, which would manifest in the enablement of high catalyst loading and high recyclability. The catalyst is an alkali metal, preferably K2CO3, so that conversion proportional to total K2CO3 to solid carbon ratio is achieved with as high K2CO3 loading as 50 wt % on the solid support. The combustion zone (140) is operated at 800°-840° C., to prevent any conversion of the ?-alumina to ?-alumina, so that catalyst recyclability of up to 98% is achieved between two successive cycles.Type: ApplicationFiled: December 18, 2013Publication date: December 17, 2015Applicant: Reliance Industries LimitedInventors: Sateesh Daggupati, Sukumar Mandal, Asit Kumar Das, Ajit Vishwanath Sapre