Patents by Inventor Debasis Bhattacharyya

Debasis Bhattacharyya 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).

  • Patent number: 10280372
    Abstract: The present invention relates to a novel catalyst composition for catalytic cracking of hydrocarbon streams to enhance the yield of light olefins. The catalyst composition for the cracking of hydrocarbon feed streams to light olefins, comprises a USY zeolite with silica/alumina ratio of more than 40, pentasil zeolite, a phosphate compound and alumina silica binder. The yield of olefins is further increased when the catalyst composition is impregnated with a cerium oxide. The present invention also provides a process of increasing the yield of light olefins from hydrocarbon feed streams comprising contacting the hydrocarbon streams with catalyst compositions of the present invention.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: May 7, 2019
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Biswanath Sarkar, Satyen Kumar Das, Somnath Kukade, Ganga Shankar Mishra, Eswar Prasad Dalai, Velusamy Chidambaram, Sudhir Kumar Pandey, Ram Mohan Thakur, Debasis Bhattacharyya, Santanam Rajagopal
  • Patent number: 10273417
    Abstract: An apparatus which is an integral hardware consisting of an annular downer reactor and a concentric upflow riser regenerator for catalytic cracking of hydrocarbon feed to is disclosed. The annular downer reactor terminates in annular stripper which is also concentric with the regenerator. The regenerator, reactor and stripper are in fluid connection with each other. The apparatus is highly compact and provides efficient contact between circulating catalyst and hydrocarbon feed. The proposed hardware includes a novel radial distributor for providing improved control and radial distribution of catalyst inside the downflow reactor. The radial distributor has equal numbers of stationary and movable parts placed one after another to cover the entire annular opening at the bottom of the regenerated catalyst vessel. The radial distributor is concentric with regenerator and located between the catalyst holding vessel and the reactor. A process for catalytic cracking using the invented apparatus is also disclosed.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: April 30, 2019
    Assignee: INDIAN OIL CORPORATION LTD.
    Inventors: Mukthiyar Sadhullah, Satheesh Vetterkunnel Kumaran, Debasis Bhattacharyya, Gadari Saidulu, Somnath Kukade, Brijesh Kumar, Santanam Rajagopal
  • Patent number: 10266459
    Abstract: A process and apparatus for catalytic cracking of hydrocarbon feedstock employing circulating fluidized bed reactor-regenerator configuration for maximizing the yield of propylene (C3 olefin) is disclosed. The apparatus comprises two reaction zones operating under different temperature and weight hourly space velocity (WHSV), one primary zone for cracking of hydrocarbon feedstock and other as secondary zone for cracking of C4 fraction produced from the cracking of hydrocarbon feedstock in the primary reaction zone, optionally admixed with C4 stream from external source. Two dedicated conduits equipped with valves for control of catalyst flow rate are provided to supply the hot catalyst from a common catalyst regeneration zone wherein the catalyst flowing though conduit connected to the secondary reaction zone is cooled employing a heat exchanging device.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: April 23, 2019
    Assignee: Indian Oil Corporation Limited
    Inventors: Manoj Kumar Bhuyan, Satheesh Vetterkunnel Kumaran, Debasis Bhattacharyya, Shoeb Hussain Khan, Bidyut De, Sudhir Kumar Pande
  • Publication number: 20190100705
    Abstract: The present invention relates to a hydrocracking reactor system and a process utilizing the same for upgrading heavy hydrocarbonaceous material to value-added products. Accordingly, an aspect of the present invention includes dispersing a liquid feedstock pre-mixed with a catalyst from top of a reactor vessel to obtain dispersed droplets having a predetermined droplet size less than 500 ?m, introducing a gaseous feed comprising primarily of hydrogen from bottom of the reactor vessel to form a continuous gaseous phase throughout a cross-section of the reactor vessel, and allowing the dispersed droplets to contact the continuous gaseous phase throughout the cross-section of the reactor vessel to form reaction effluent comprising one or more lighter product hydrocarbons. The method may further include removing at least a top portion and at least a bottom portion of the reaction effluent from the reactor vessel.
    Type: Application
    Filed: August 30, 2018
    Publication date: April 4, 2019
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Mainak SARKAR, Darshankumar Manubhai DAVE, Ramesh KARUMANCHI, Madhusudan SAU, Ganesh Vitthalrao BUTLEY, Nepal VISHWAKARMA, Kamal KUMAR, Pravesh KUMAR, Sarvesh KUMAR, Debasis BHATTACHARYYA, Sanjiv Kumar MAZUMDAR, Sankara Sri Venkata RAMAKUMAR
  • Publication number: 20190055481
    Abstract: The present invention relates to resid processing, particularly related to conversion of resid material with maximum recovery of lighter hydrocarbons. The invented process utilizes a novel scheme for integration of solvent de-asphalting and delayed coking processes to maximize the residue conversion to valuable products, with cleaner quality of middle distillates and fuel oil products, in comparison with other integrated solvent de-asphalting and delayed coking schemes. This process also has an additional flexibility to vary the recycle quantity, without impacting fractionator operation of the delayed coking section, which further enhances the product recovery and achieves maximum conversion of the resid feedstock, with minimum impact on liquid product properties.
    Type: Application
    Filed: March 6, 2018
    Publication date: February 21, 2019
    Applicant: Indian Oil Corporation Limited
    Inventors: Ponoly Ramachandran PRADEEP, Satyen Kumar DAS, Terapalli Hari Venkata Devi PRASAD, Arjun Kumar KOTTAKUNA, Debasis BHATTACHARYYA, Sanjiv Kumar MAZUMDAR, Sankara Sri Venkata RAMAKUMAR
  • Publication number: 20190011126
    Abstract: An apparatus and a method for achieving progressive reduction of flue gas is disclosed. Accordingly, an aspect of the present invention is to provide an apparatus comprising of an orifice chamber having an inlet pipe for receiving the flue gas, a flow region defined downstream of an exit of the inlet pipe and having at least a first section and a second section, and an outlet pipe to disperse a pressure reduced flue gas. The first section defined downstream of the inlet pipe has a flow developer means and at least one auxiliary orifice plate. The second section defined downstream of the first section has a plurality of orifice plates spaced apart along a flow length of the second section.
    Type: Application
    Filed: March 14, 2018
    Publication date: January 10, 2019
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Saidulu GADARI, Manoj Kumar YADAV, Shoeb Hussain KHAN, Satheesh Vetterkunnel KUMARAN, Debasis BHATTACHARYYA, Sankara Sri Venkata RAMAKUMAR
  • Publication number: 20190001353
    Abstract: An apparatus and a method for mixing and atomizing a hydrocarbon stream is disclosed. The apparatus comprises of an inner conduit having a first inlet for receiving the hydrocarbon stream, and a second inlet for receiving a primary dispersion stream. The inner conduit produces a primary mixture comprising the hydrocarbon stream and the primary dispersion stream. The apparatus further includes an outer conduit having a third inlet for receiving a secondary dispersion stream. Further, said inner and outer conduits together define an annular passage. The distal end of the annular passage defines a second set of orifices for allowing the secondary dispersion stream flowing there-through to come in contact with the primary mixture and thereby dispensing the secondary mixture so obtained through an outlet.
    Type: Application
    Filed: March 7, 2018
    Publication date: January 3, 2019
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Shoeb Hussain KHAN, Venkata Hari Prasad Gupta BANDARU, Jagdev Kumar DIXIT, Gautam THAPA, Satheesh Vetterkunnel KUMARAN, Debasis BHATTACHARYYA, Sankara Sri Venkata RAMAKUMAR
  • Patent number: 10159951
    Abstract: The present invention discloses a method and an apparatus for mixing and atomizing a hydrocarbon stream using a diluent/dispersion stream.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: December 25, 2018
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Bidyut De, Shoeb Hussain Khan, Satheesh Vetterkunnel Kumaran, Debasis Bhattacharyya, Brijesh Kumar
  • Publication number: 20180345267
    Abstract: According to an embodiment, a spent catalyst distributor for distributing spent catalyst in a catalyst regenerator vessel housing a dense phase catalyst bed and a dilute phase catalyst bed is disclosed. The spent catalyst distributor comprises a conduit comprising a proximal end and a distal end. The conduit projects horizontally or horizontally and downwardly into the regenerator vessel and includes an opening located at the distal end for introducing the spent catalyst at a first location inside the regenerator vessel. The conduit further includes a plurality of orifices located along a length of the conduit between the distal end and an inner wall of the regenerator vessel for introducing the spent catalyst at a plurality of locations inside the regenerator vessel.
    Type: Application
    Filed: March 12, 2018
    Publication date: December 6, 2018
    Inventors: Shoeb Hussain KHAN, Vikas BADHAN, Venkata Hari Prasad Gupta BANDARU, Gautam THAPA, Satheesh Vetterkunnel KUMARAN, Debasis BHATTACHARYYA, Sankara Sri Venkata RAMAKUMAR
  • Patent number: 10130929
    Abstract: An apparatus which is an integral hardware consisting of an annular downer reactor and a concentric upflow riser regenerator for catalytic cracking of hydrocarbon feed to is disclosed. The annular downer reactor terminates in annular stripper which is also concentric with the regenerator. The regenerator, reactor and stripper are in fluid connection with each other. The apparatus is highly compact and provides efficient contact between circulating catalyst and hydrocarbon feed. The proposed hardware includes a novel radial distributor for providing improved control and radial distribution of catalyst inside the downflow reactor. The radial distributor has equal numbers of stationary and movable parts placed one after another to cover the entire annular opening at the bottom of the regenerated catalyst vessel. The radial distributor is concentric with regenerator and located between the catalyst holding vessel and the reactor. A process for catalytic cracking using the invented apparatus is also disclosed.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: November 20, 2018
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Mukthiyar Sadhullah, Satheesh Vetterkunnel Kumaran, Debasis Bhattacharyya, Gadari Saidulu, Somnath Kukade, Brijesh Kumar, Santanam Rajagopal
  • Patent number: 10131589
    Abstract: The present invention relates to a process for production of oligomer products from olefinic C4 feed stocks comprising isobutene, butenes, butanes, butadienes and mixture thereof. Particularly, the present invention relates to a process for the preparation of oligomers using olefinic C4 feed stock in presence of tertiary butyl alcohol (TBA) and iso propyl alcohol (IPA).
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: November 20, 2018
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Saravanan Subramani, Reshmi Manna, Pushkar Varshney, Anju Chopra, Debasis Bhattacharyya, Brijesh Kumar, Biswapriya Das, Ravinder Kumar Malhotra
  • Publication number: 20180264430
    Abstract: An apparatus which is an integral hardware consisting of an annular downer reactor and a concentric upflow riser regenerator for catalytic cracking of hydrocarbon feed to is disclosed. The annular downer reactor terminates in annular stripper which is also concentric with the regenerator. The regenerator, reactor and stripper are in fluid connection with each other. The apparatus is highly compact and provides efficient contact between circulating catalyst and hydrocarbon feed. The proposed hardware includes a novel radial distributor for providing improved control and radial distribution of catalyst inside the downflow reactor. The radial distributor has equal numbers of stationary and movable parts placed one after another to cover the entire annular opening at the bottom of the regenerated catalyst vessel. The radial distributor is concentric with regenerator and located between the catalyst holding vessel and the reactor. A process for catalytic cracking using the invented apparatus is also disclosed.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 20, 2018
    Applicant: INDIAN OIL CORPORATION LTD.
    Inventors: Mukthiyar SADHULLAH, Satheesh Vetterkunnel KUMARAN, Debasis BHATTACHARYYA, Gadari SAIDULU, Somnath KUKADE, Brijesh KUMAR, Santanam RAJAGOPAL
  • Publication number: 20180208853
    Abstract: The present invention relates to delayed coking of heavy petroleum residue producing petroleum coke and lighter hydrocarbon products. The invented process utilize a pre-cracking reactor and a reactor furnace for mild thermal cracking of the feedstock and an intermediate separator, before being subjected to higher severity thermal cracking treatment in a coker furnace and a coking drums, resulting in reduction in overall coke yield.
    Type: Application
    Filed: March 26, 2018
    Publication date: July 26, 2018
    Inventors: Satyen Kumar DAS, Ponoly Ramachandran PRADEEP, Terapalli Hari Venkata Devi PRASAD, Arjun Kumar KOTTAKUNA, Madhusudan SAU, Debasis BHATTACHARYYA, Sanjiv Kumar MAZUMDAR, Sankara Sri Venkata RAMAKUMAR
  • Patent number: 9920266
    Abstract: The present invention relates to an apparatus and method for mixing and atomizing a hydrocarbon stream using a diluent/dispersion stream.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: March 20, 2018
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Shoeb Hussain Khan, Bidyut De, Satheesh Vetterkunnel Kumaran, Manoj Kumar Yadav, Debasis Bhattacharyya, Brijesh Kumar
  • Publication number: 20180050969
    Abstract: A process and apparatus for catalytic cracking of hydrocarbon feedstock employing circulating fluidized bed reactor-regenerator configuration for maximizing the yield of propylene (C3 olefin) is disclosed. The apparatus comprises two reaction zones operating under different temperature and weight hourly space velocity (WHSV), one primary zone for cracking of hydrocarbon feedstock and other as secondary zone for cracking of C4 fraction produced from the cracking of hydrocarbon feedstock in the primary reaction zone, optionally admixed with C4 stream from external source. Two dedicated conduits equipped with valves for control of catalyst flow rate are provided to supply the hot catalyst from a common catalyst regeneration zone wherein the catalyst flowing though conduit connected to the secondary reaction zone is cooled employing a heat exchanging device.
    Type: Application
    Filed: August 21, 2017
    Publication date: February 22, 2018
    Inventors: Manoj Kumar BHUYAN, Satheesh Vetterkunnel KUMARAN, Debasis BHATTACHARYYA, Shoeb Hussain KHAN, Bidyut DE, Sudhir Kumar PANDE
  • Patent number: 9873096
    Abstract: The present subject matter relates to a feed nozzle assembly 100 for atomizing a heavy hydrocarbon feed by mixing the hydrocarbon feed with a diluent and an atomizing media. The feed nozzle assembly 100 includes at least one primary mixing chambers 101 for receiving the liquid hydrocarbon feed and the diluent to create a primary mixture. The primary mixture is than forwarded to a secondary mixing chamber 102. The secondary mixing chamber extends to a tertiary mixing chamber 103. A steam inlet 110 is provided to inject streams of steam to the secondary mixing chamber 102 and to the tertiary mixing chamber 103 through a first opening and a second opening, respectively, located within the steam inlet 110.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: January 23, 2018
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Bidyut De, Pankaj Kumar Kasliwal, Debasis Bhattacharyya, Venkatachalam Krishnan, Santanam Rajagopal
  • Publication number: 20180016503
    Abstract: The present subject matter describes a method and apparatus for operating a delayed coker. The method comprises contacting a vapour produced in a delayed coker-drum with a catalyst maintained in form of a bed, and maintaining a level of said catalyst-bed within pre-defined limits during catalytic-cracking of the vapour. Thereafter, the cracked-vapour is routed to a coker-fractionator column to trigger conversion into one or more hydrocarbon products.
    Type: Application
    Filed: July 14, 2017
    Publication date: January 18, 2018
    Inventors: Terapalli Hari Venkata Devi PRASAD, Ponoly Ramachandran PRADEEP, Satyen Kumar DAS, Jagdev Kumar DIXIT, RAJESH, Gautam THAPA, Debasis BHATTACHARYYA, Sankara Sri Venkata RAMAKUMAR, Biswapriya DAS
  • Patent number: 9868903
    Abstract: The present invention relates to a liquid phase additive comprising an alkyl nitrate; a petroleum sulphonates; an aliphatic, aromatic, cyclohexylamines or hetroalkylated lower amines; a hindered phenol based compounds; a phosphate esters and an aliphatic alcohols for use in delayed coking process with decreased coke yield and increased yield of liquid and/or gaseous product and a process for preparing the liquid phase additive. The present invention also relates to a process for thermal cracking of petroleum residue producing petroleum coke and lighter hydrocarbon products by using liquid phase additive.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: January 16, 2018
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Satyen Kumar Das, Ponoly Ramachandran Pradeep, Terapalli Hari Venkata Devi Prasad, Jagdev Kumar Dixit, Gautam Thapa, Ram Mohan Thakur, Vinod Kumar Sharma, Debasis Bhattacharyya, Suresh Kumar Puri, Anurag Ateet Gupta, Brijesh Kumar, Biswapriya Das, Ravinder Kumar Malhotra
  • Patent number: 9840671
    Abstract: The present invention provides a delayed coking process comprising a step of subjecting a mixed feed comprises residual heavy hydrocarbon feedstock and bio oil obtained from fast pyrolysis of lignocellulosic biomass of one or more of Jatropha, Cashew nut, Karanjia and Neem to a delayed coking process and a system for the delayed coking process.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: December 12, 2017
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Ram Mohan Thakur, Ajay Kumar Arora, Terapalli Hari Venkata Devi Prasad, Pradeep Ponoly Ramachandran, Jagdev Kumar Dixit, Rajesh, Debasis Bhattacharyya, Suresh Kumar Puri, Brijesh Kumar, Santanam Rajagopal, Ravinder Kumar Malhotra
  • Patent number: 9783744
    Abstract: Present invention relates to a novel process for upgrading a residual hydrocarbon oil feedstock having a significant amount of Conradson Carbon Residue (concarbon), metals, especially vanadium and nickel, asphaltenes, sulfur impurities and nitrogen to a lighter more valuable hydrocarbon products by reducing or minimizing coke formation and by injecting fine droplets of oil soluble organo-metallic compounds at multiple elevations of the riser with varying dosing rates.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: October 10, 2017
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Sayapaneni Gopinath Bhanuprasad, Sadhullah Mukthiyar, Gadari Saidulu, Ram Mohan Thakur, Indranil Roy Choudhary, Manoj Kumar Yadav, Satheesh Vetterkunnel Kumaran, Debasis Bhattacharyya, Brijesh Kumar, Biswapriya Das