Patents by Inventor Mainak Sarkar

Mainak Sarkar 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: 11866658
    Abstract: A process for the production of ultralow aromatic specialty distillate from different refinery streams particularly high sulfur streams. The process produces de-aromatized distillates with benzene content below 1 ppmw. Hydrocarbon feedstock having boiling temperature in the range of 90 and 350° C., preferably 140 and 320° C. The hydrocarbon feedstocks are obtained from any petroleum-refinery or bio-refinery or any other source producing hydrocarbon streams.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: January 9, 2024
    Inventors: Vasamsetty Naga Veera Hima Bindu, Mainak Sarkar, Ganesh Vitthalrao Butley, Ramesh Karumanchi, Sarvesh Kumar, Madhusudan Sau, Sankara Sri Venkata Ramakumar
  • Patent number: 11840672
    Abstract: The present invention relates to a process and system for complete conversion of crude oils by integrating Desalter unit, Atmospheric and vacuum column, high severity FCC process, Naphtha cracking process, residue slurry hydrocracking process, Delayed coking process, Selective mild hydrocracking aromatic production unit, Dehydrogenation units, Aromatic/olefin recovery section, gasifier unit along with syngas to olefins conversion section.
    Type: Grant
    Filed: January 11, 2023
    Date of Patent: December 12, 2023
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Ponoly Ramachandran Pradeep, Shahil Siddiqui, Vineeth Venu Nath, Darshankumar Manubhai Dave, Mainak Sarkar, Satyen Kumar Das, Madhusudan Sau, Sankara Sri Venkata Ramakumar
  • Publication number: 20230331645
    Abstract: A process for the upgrading of hydrocarbon streams, i.e., processing any hydrocarbon feed streams rich in benzene and sulphur compounds. The process for simultaneous hydrodesulfurization and benzene conversion to higher alkylated aromatic molecules (C7 to C10 aromatics), without need of prior treatment like distillation, or sulfur removal. The hydrocarbon feed streams are processed over sulfided metal catalyst impregnated on acid support simultaneously desulfurizes and alkylates the benzene molecules.
    Type: Application
    Filed: April 12, 2023
    Publication date: October 19, 2023
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Nayan DAS, Mainak SARKAR, Ganesh Vitthalrao BUTLEY, Kalicharan CHATTOPADHYAY, Sarvesh KUMAR, Madhusudan SAU
  • Publication number: 20230227738
    Abstract: The present invention relates to a process and system for complete conversion of crude oils by integrating Desalter unit, Atmospheric and vacuum column, high severity FCC process, Naphtha cracking process, residue slurry hydrocracking process, Delayed coking process, Selective mild hydrocracking aromatic production unit, Dehydrogenation units, Aromatic/olefin recovery section, gasifier unit along with syngas to olefins conversion section.
    Type: Application
    Filed: January 11, 2023
    Publication date: July 20, 2023
    Inventors: Ponoly Ramachandran PRADEEP, Shahil SIDDIQUI, Vineeth Venu NATH, Darshankumar Manubhai DAVE, Mainak SARKAR, Satyen Kumar DAS, Madhusudan SAU, Sankara Sri Venkata RAMAKUMAR
  • Publication number: 20230193146
    Abstract: A process for the production of ultralow aromatic specialty distillate from different refinery streams particularly high sulfur streams. The process produces de-aromatized distillates with benzene content below 1 ppmw. Hydrocarbon feedstock having boiling temperature in the range of 90 and 350° C., preferably 140 and 320° C. The hydrocarbon feedstocks are obtained from any petroleum-refinery or bio-refinery or any other source producing hydrocarbon streams.
    Type: Application
    Filed: December 19, 2022
    Publication date: June 22, 2023
    Inventors: Vasamsetty Naga Veera HIMA BINDU, Mainak Sarkar, Ganesh Vitthalrao Butley, Ramesh Karumanchi, Sarvesh Kumar, Madhusudan Sau, Sankara Sri Venkata Ramakumar
  • Patent number: 11578277
    Abstract: The present invention discloses an integrated process scheme for producing (i) high-octane gasoline blending stream (ii) high aromatic heavy naphtha stream which is a suitable feedstock for benzene, toluene, and xylene (BTX) production and (iii) high cetane ultra-low sulphur diesel (ULSD) stream suitable for blending in refinery diesel pool.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: February 14, 2023
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Nayan Das, Mainak Sarkar, Ganesh Vitthalrao Butley, Ramesh Karumanchi, Sarvesh Kumar, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
  • Patent number: 11548841
    Abstract: The present invention provides a novel route for synthesis and production of linear alpha olefins (LAO) and central olefins from the feedstock comprising fatty acids, triglycerides and esters of fatty acids, and mixture thereof through controlled hydrogenolysis, hydrogenation and dehydration reactions simultaneously in a hydro processing reactor containing a catalyst system having dual site—a metallic site for hydrogenation/reduction reaction under hydrogen environment, and an acidic site for conversion of alcohol to olefin via E1 or E2 reaction mechanism.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: January 10, 2023
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Vasamsetty Naga Veera Hima Bindu, Mainak Sarkar, Ganesh Vitthalrao Butley, Ajay Kumar, Sujit Mondal, Ramesh Karumanchi, Sarvesh Kumar, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
  • Publication number: 20220135890
    Abstract: The present invention discloses an integrated process scheme for producing (i) high-octane gasoline blending stream (ii) high aromatic heavy naphtha stream which is a suitable feedstock for benzene, toluene, and xylene (BTX) production and (iii) high cetane ultra-low sulphur diesel (ULSD) stream suitable for blending in refinery diesel pool.
    Type: Application
    Filed: November 5, 2021
    Publication date: May 5, 2022
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Nayan DAS, Mainak SARKAR, Ganesh Vitthalrao BUTLEY, Ramesh KARUMANCHI, Sarvesh KUMAR, Madhusudan SAU, Gurpreet Singh KAPUR, Sankara Sri Venkata RAMAKUMAR
  • Publication number: 20220098130
    Abstract: The present invention provides a novel route for synthesis and production of linear alpha olefins (LAO) and central olefins from the feedstock comprising fatty acids, triglycerides and esters of fatty acids, and mixture thereof through controlled hydrogenolysis, hydrogenation and dehydration reactions simultaneously in a hydro processing reactor containing a catalyst system having dual site—a metallic site for hydrogenation/reduction reaction under hydrogen environment, and an acidic site for conversion of alcohol to olefin via E1 or E2 reaction mechanism.
    Type: Application
    Filed: September 27, 2021
    Publication date: March 31, 2022
    Inventors: Vasamsetty Naga Veera HIMA BINDU, Mainak SARKAR, Ganesh Vitthalrao BUTLEY, Ajay KUMAR, Sujit MONDAL, Ramesh KARUMANCHI, Sarvesh KUMAR, Madhusudan SAU, Gurpreet Singh KAPUR, Sankara Sri Venkata RAMAKUMAR
  • Publication number: 20220089960
    Abstract: A process and a system are used for production of multiple grades of ultralow aromatic solvents/chemicals having preferred boiling range, flash point and viscosity from different hydrocarbon streams. A plurality of hydrotreating steps are used to hydrotreat a plurality of hydrocarbon feedstocks in the presence of a hydrogen gas stream and a catalyst system. Further, at least one dissolved gas stripping step, at least one adsorption step, and a distillation step are included in the process. Desired iso-paraffin molecules are thereby preserved, and the undesired aromatic molecules are converted into desired naphthene molecules.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 24, 2022
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Vasamsetty Naga Veera HIMA BINDU, Mainak SARKAR, Ganesh Vitthalrao BUTLEY, Ramesh KARUMANCHI, Sarvesh KUMAR, Madhusudan SAU, Gurpreet Singh KAPUR, Sankara Sri Venkata RAMAKUMAR
  • Patent number: 11001771
    Abstract: A process for upgrading light cycle oil (LCO) to a high octane gasoline and a high aromatic feedstock for aromatic complex, by utilizing fluid catalytic cracking (FCC) is disclosed. FCC cracks unconverted diesel range stream from a hydrocracker to a high octane gasoline. This process further improves the quality (e.g., research octane number (RON), and Sulfur) of gasoline by utilizing FCC and hydrocracking process.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: May 11, 2021
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Mainak Sarkar, Nayan Das, Ganesh Vitthalrao Butley, Sandeep Kumar, Ram Mohan Thakur, Ramesh Karumanchi, Sarvesh Kumar, Madhusudan Sau, Sanjiv Kumar Mazumdar, Sankara Sri Venkata Ramakumar
  • Publication number: 20200377807
    Abstract: The present invention provides a process for upgrading LCO to (i) high octane gasoline and high aromatic feedstock for aromatic complex, (ii) Utilization of FCC for cracking unconverted diesel range stream from hydrocracker to high octane gasoline. This invention discloses the process to improve the quality (e.g., RON, Sulfur) of gasoline by utilizing FCC and hydrocracking processes.
    Type: Application
    Filed: April 16, 2020
    Publication date: December 3, 2020
    Inventors: Mainak SARKAR, Nayan DAS, Ganesh Vitthalrao BUTLEY, Sandeep KUMAR, Ram Mohan THAKUR, Ramesh KARUMANCHI, Sarvesh KUMAR, Madhusudan SAU, Sanjiv Kumar MAZUMDAR, Sankara Sri Venkata RAMAKUMAR
  • Patent number: 10822557
    Abstract: The present invention relates to a process for production of High-Octane Gasoline blending component, Heavy Naphtha with high aromatic content and High Cetane Diesel from high aromatic middle distillate range boiling streams obtained from catalytic as well as thermal cracker units.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: November 3, 2020
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Mainak Sarkar, Nayan Das, Ganesh Vitthalrao Butley, Sarvesh Kumar, Rama Kant Yadav, Pastagia Kashyapkumar Mahindra, Madhusudan Sau, Debasis Bhattacharyya, Sanjiv Kumar Mazumdar, Sankara Sri Venkata Ramakumar
  • Patent number: 10655076
    Abstract: The present invention relates to an assorted co-staging and counter stage hydro-treating process configuration scheme is disclosed for deep desulfurization and deep hydro-treating of diesel range hydrocarbons for obtaining diesel product having product sulfur less than 10 ppm and cetane number more than 51.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: May 19, 2020
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Mainak Sarkar, Darshankumar Manubhai Dave, Ganesh Vitthalrao Butley, Ramesh Karumanchi, Arun Arangarasu, Sarvesh Kumar, Madhusudan Sau, Debasis Bhattacharyya, Sanjiv Kumar Mazumdar, Sankara Sri Venkata Ramakumar
  • Patent number: 10647930
    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: Grant
    Filed: August 30, 2018
    Date of Patent: May 12, 2020
    Assignee: 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
  • Patent number: 10604708
    Abstract: A multi-stage hydrotreating process obtains ultra-low sulfur diesel boiling range hydrocarbon having less than 10 ppm sulfur with elimination of external hot high pressure separator and avoids the formation of recombinant mercaptans by removing excess hydrogen sulfide formed during hydroprocessing reaction. The process includes mixing a diesel boiling range hydrocarbon feedstock with hydrogen and sending to the first predominantly liquid phase hydroprocessing reaction stage. Effluent from the first hydroprocessing reaction stage is sent to first separator zone of open and empty space in the upper part of the second hydroprocessing reaction stage to flash off the dissolved reaction products hydrogen sulfide and ammonia. Liquid part of the effluent of first hydroprocessing reaction stage is passed to the second predominantly liquid phase hydroprocessing reaction stage.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: March 31, 2020
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Ganesh Vitthalrao Butley, Yamini Gupta, Mainak Sarkar, Arun Arangarasu, Madhusudan Sau, Brijesh Kumar, Santanam Rajagopal, Ravinder Kumar Malhotra
  • Patent number: 10443002
    Abstract: The present invention discloses a process for enhancing quality of a hydrocarbon stream. More particularly, the present invention discloses a process for improvement of the combustion quality of a diesel range stream by dissolving an oxygen source in the feed stream before carrying out the oxidation, thereby enhancing the Cetane number, lubricity and reducing emission of the stream. The present invention also discloses a process for enhancing combustion quality of a hydrocarbon stream by carrying out the process in presence of an organometallic catalyst.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: October 15, 2019
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Mainak Sarkar, Arangarasu Arun, Yamini Gupta, Ganesh Vitthalrao Butley, Madhusudan Sau, Brijesh Kumar, Santanam Rajagopal, Arumugam Sakunthalai Ramadhas, Ravinder Kumar Malhotra
  • Publication number: 20190276753
    Abstract: The present invention relates to a process for production of High-Octane Gasoline blending component, Heavy Naphtha with high aromatic content and High Cetane Diesel from high aromatic middle distillate range boiling streams obtained from catalytic as well as thermal cracker units.
    Type: Application
    Filed: March 11, 2019
    Publication date: September 12, 2019
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Mainak SARKAR, Nayan DAS, Ganesh Vitthalrao BUTLEY, Sarvesh KUMAR, Rama Kant YADAV, Pastagia Kashyapkumar MAHINDRA, Madhusudan SAU, Debasis BHATTACHARYYA, Sanjiv Kumar MAZUMDAR, Sankara Sri Venkata RAMAKUMAR
  • Publication number: 20190276752
    Abstract: The present invention relates to an assorted co-staging and counter stage hydro-treating process configuration scheme is disclosed for deep desulfurization and deep hydro-treating of diesel range hydrocarbons for obtaining diesel product having product sulfur less than 10 ppm and cetane number more than 51.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Mainak SARKAR, Darshankumar Manubhai DAVE, Ganesh Vitthalrao BUTLEY, Ramesh KARUMANCHI, Arun ARANGARASU, Sarvesh KUMAR, Madhusudan SAU, Debasis BHATTACHARYYA, Sanjiv Kumar MAZUMDAR, Sankara Sri Venkata RAMAKUMAR
  • 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