Patents by Inventor Madhusudan Sau
Madhusudan Sau 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: 11952543Abstract: The present invention relates to a process for production of high yield of hydrogen by carrying out the dry reforming of the dry gas generated from the process itself by utilizing the same catalyst for cracking and producing high yield of light olefins such as ethylene, propylene and butylenes from residue feedstocks.Type: GrantFiled: November 11, 2020Date of Patent: April 9, 2024Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Sadhullah Mukthiyar, Gadari Saidulu, Manoj Kumar Bhuyan, Kamlesh Gupta, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11891356Abstract: A process for conversion of hydrocarbon feedstock into lighter olefins of C2 to C4 carbons, the process comprising of cracking the hydrocarbon feedstock in a reactor in the presence of a catalyst. The catalyst for short contact time catalytic cracking process of heavy hydrocarbons having contact time less than 1 second to produce light olefins of C2 to C4 carbon in the range of 40 to 60 wt % on fresh feed basis in a fluidized bed reactor which is concentric downflow reactor in presence of catalyst consisting of ultra-stable Y zeolite in the range of 5-10 wt %, 4 to 8 wt % of pentasil zeolite, 2.5-5 wt % of bottom selective material, 0.5-2 wt % of rare earth and 75-88 wt % of support material.Type: GrantFiled: February 21, 2023Date of Patent: February 6, 2024Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Sadhullah Mukthiyar, Shikha Saluja, Gadari Saidulu, Arumugam Velayutham Karthikeyani, Madhusudan Sau, Debasis Bhattacharyya, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11873276Abstract: The present invention discloses process and apparatus for the production of light olefins from their respective alkanes by catalytic dehydrogenation, where in the dehydrogenation reaction is carried out in multiple semi-continuously operated fluidized bed isothermal reactors, connected to a common regenerator and wherein the process is carried out in a sequence of steps in each cycle i.e., entry of hot regenerated catalyst, pre-treatment with reducing gas, dehydrogenation reaction, stripping, transfer of catalyst to regenerator and catalyst regeneration. Process cycle in each reactor starts at different times such that the catalyst inventory in the regenerator is invariable with time.Type: GrantFiled: September 16, 2021Date of Patent: January 16, 2024Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Hima Bindu Doosa, Saravanan Subramani, Ram Mohan Thakur, Vineeth Venu Nath, Kumaresan Loganathan, Bineesh Kanattukara Vijayan, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11866658Abstract: 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: GrantFiled: December 19, 2022Date of Patent: January 9, 2024Inventors: Vasamsetty Naga Veera Hima Bindu, Mainak Sarkar, Ganesh Vitthalrao Butley, Ramesh Karumanchi, Sarvesh Kumar, Madhusudan Sau, Sankara Sri Venkata Ramakumar
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Patent number: 11859132Abstract: The present invention discloses a process and an apparatus for conversion of waste plastic pyrolysis oil into value added products, wherein, the pyrolysis oil is produced from waste plastics by utilizing HCGO as a preheating stream. The process and apparatus as disclosed improves the conventional DCU process in terms of liquid, gaseous yields and reduction in coke yields and without disturbing the hardware of the conventional process along with energy efficient production of pyrolysis oil. The present process and apparatus include a delayed coking process and a system for the delayed coking process which involves the integration of delayed coking system with pyrolysis section and utilization of produced pyrolysis oil by co-processing it with residual heavy hydrocarbon feedstock.Type: GrantFiled: August 2, 2022Date of Patent: January 2, 2024Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Shahil Siddiqui, Ponoly Ramachandran Pradeep, Vijayan Kanattukara Bineesh, Satyen Kumar Das, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11840672Abstract: 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: GrantFiled: January 11, 2023Date of Patent: December 12, 2023Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Ponoly Ramachandran Pradeep, Shahil Siddiqui, Vineeth Venu Nath, Darshankumar Manubhai Dave, Mainak Sarkar, Satyen Kumar Das, Madhusudan Sau, Sankara Sri Venkata Ramakumar
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Publication number: 20230331645Abstract: 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: ApplicationFiled: April 12, 2023Publication date: October 19, 2023Applicant: INDIAN OIL CORPORATION LIMITEDInventors: Nayan DAS, Mainak SARKAR, Ganesh Vitthalrao BUTLEY, Kalicharan CHATTOPADHYAY, Sarvesh KUMAR, Madhusudan SAU
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Patent number: 11788013Abstract: High-quality graphite/needle grade coke is produced with reduced impurity levels and improved coefficient of thermal expansion using an integrated hydrotreatment, catalytic cracking and coking reaction sections, employing a combination of highly paraffinic hydrotreated VGO stream and aromatic CLO stream, which is thereafter processed in a delayed coking section.Type: GrantFiled: September 17, 2021Date of Patent: October 17, 2023Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Ponoly Ramachandran Pradeep, Shivam Ashok Dixit, Prantik Mondal, Jitumoni Brahma, Rajesh, Terapalli Hari Venkata Devi Prasad, Satyen Kumar Das, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11739277Abstract: Organic sulfur compounds which are generally present in the crude oil undergoes various transformations while processing the crude oil in the secondary processing units such as fluid catalytic cracker, hydrocracker, delayed coker, visbreaker, etc. The sulfur present in the feed which enters into these secondary processing units are distributed into various products coming out of the units. Sulfur compounds which are present in the various product fractions are removed to meet the desired specifications before routing to the final product pool. Conventionally, sulfur present in the LPG has been removed by amine treatment followed by caustic and water wash. The present invention relates to a process for removal of sulfur and other impurities from Liquefied Petroleum Gas (LPG) comprising olefins through reactive desulfurization route. The present invention is an eco-friendly process as it minimizes or eliminates the use of caustic which is conventionally used to remove the sulfur from LPG.Type: GrantFiled: March 17, 2021Date of Patent: August 29, 2023Assignee: Indian Oil Corporation LimitedInventors: Saravanan Subramani, Vimal Kumar Upadhyay, Prosenjit Maji, Reshmi Manna, Vatsala Sugumaran, Mahalingam Vanamamalai, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Publication number: 20230265026Abstract: A process for conversion of hydrocarbon feedstock into lighter olefins of C2 to C4 carbons, the process comprising of cracking the hydrocarbon feedstock in a reactor in the presence of a catalyst. The catalyst for short contact time catalytic cracking process of heavy hydrocarbons having contact time less than 1 second to produce light olefins of C2 to C4 carbon in the range of 40 to 60 wt % on fresh feed basis in a fluidized bed reactor which is concentric downflow reactor in presence of catalyst consisting of ultra-stable Y zeolite in the range of 5-10 wt %, 4 to 8 wt % of pentasil zeolite, 2.5-5 wt % of bottom selective material, 0.5-2 wt % of rare earth and 75-88 wt % of support material.Type: ApplicationFiled: February 21, 2023Publication date: August 24, 2023Applicant: INDIAN OIL CORPORATION LIMITEDInventors: Sadhullah MUKTHIYAR, Shikha SALUJA, Gadari SAIDULU, Arumugam Velayutham KARTHIKEYANI, Madhusudan SAU, Debasis BHATTACHARYYA, Gurpreet Singh KAPUR, Sankara Sri Venkata RAMAKUMAR
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Patent number: 11731094Abstract: The present invention provides a multistage single reactor system for hydroprocessing and a process of carrying out multistage hydroprocessing in the said reactor assembly consisting of, a fixed bed solid catalyst system, a feed injection system enabling axial flow of hydrogen saturated hydrocarbon feed, a hydrogen dispensing system inside the reactor enabling minimum required hydrogen flow in cross-flow pattern, also using multitudes of integrated separation and withdrawal limbs for continuous staging. The innovative reactor disclosed in the present invention enables continuous separation and withdrawal of gaseous products along the reactor length by means of combined horizontal reactor orientation and vertical separation limbs provided at the top of the horizontally oriented reactor. The advantage of the reactor assembly includes effective heat sink of exothermic reactions and lower severity of operation due to removal of inhibitory gaseous products.Type: GrantFiled: July 26, 2022Date of Patent: August 22, 2023Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Yamini Gupta, Arun Arangarasu, Nepal Viswakarma, Ganesh Vitthalrao Butley, Sarvesh Kumar, Madhusudan Sau, Gurpreet Kapur Singh, Sankara Sri Venkata Ramakumar
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Patent number: 11732200Abstract: The present invention relates to an integrated process for increasing the research octane number (RON) of FCC gasoline with simultaneous reduction in benzene content. In this process, benzene rich gasoline fraction is reacted with light olefin rich gaseous streams like FCC off gas/dry gas, coker off gas to produce alkyl aromatics using FCC catalyst system containing ZSM-5 zeolite. The catalyst is continuously drawn from the FCC regenerator by suitably placing the alkylation reactor in communication with the FCC regenerator. The product stream of the alkylation reactor is routed to main fractionator for separation of off gas and benzene lean gasoline. This integrated process not only improves the octane number of gasoline but also lowers the gasoline benzene content. Further the integrated alkylation reactor system acts as a heat sink lowering the FCC regenerator temperature and enables the FCC unit to process high CCR feeds.Type: GrantFiled: March 25, 2022Date of Patent: August 22, 2023Assignee: Indian Oil Corporation LimitedInventors: Sandup Tshering Bhutia, Vineeth Venu Nath, Arvind Wamandas Mahant, Bandaru Hari Venkata Prasad Gupta, Ram Mohan Thakur, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11731121Abstract: The present invention provides a process of preparing a high coordination sulfated mixed metal oxide catalyst. The process comprises mixing specific ratios of alumina and zirconia mixtures at specific particle size limits which do not exceed 37 ?m, in the presence of a combination of ?-amino acids, i.e., non-polar side chains and basic side chains having molecular weight less than 250, nitric acid (HNO3) and sulfuric acid (H2SO4) at a pH range of 1.5 to 3.8 at temperatures below 30° C. The catalysts have a high conversion towards hydrocarbon isomerization reaction while concurrently having crushing strength in range of 2.0 daN and 5.0 daN, allowing for efficient commercial application.Type: GrantFiled: February 18, 2021Date of Patent: August 22, 2023Assignees: Viridis Chemicals Private Limited, Indian Oil Corporation LimitedInventors: Chaitanya Sampara, Pushkar Varshney, Reshmi Manna, Saravanan Subramani, Madhusudan Sau, Debasis Bhattacharyya, Sankara Sri Venkata Ramakumar
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Publication number: 20230227738Abstract: 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: ApplicationFiled: January 11, 2023Publication date: July 20, 2023Inventors: Ponoly Ramachandran PRADEEP, Shahil SIDDIQUI, Vineeth Venu NATH, Darshankumar Manubhai DAVE, Mainak SARKAR, Satyen Kumar DAS, Madhusudan SAU, Sankara Sri Venkata RAMAKUMAR
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Publication number: 20230193146Abstract: 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: ApplicationFiled: December 19, 2022Publication date: June 22, 2023Inventors: Vasamsetty Naga Veera HIMA BINDU, Mainak Sarkar, Ganesh Vitthalrao Butley, Ramesh Karumanchi, Sarvesh Kumar, Madhusudan Sau, Sankara Sri Venkata Ramakumar
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Patent number: 11661556Abstract: The present invention relates to a sequential thermo-chemical treatment along with adsorption-based pre-treatment process for residual oils having a very high naphthenic acid content. First stage of the process is a thermal pre-treatment step which results into generation of hydrocarbon stream with a reduced naphthenic acid content due to high temperature. In second stage of pre-treatment, generated hydrocarbon stream from stage-1 is subjected to esterification reaction with alcohol, such as methanol, to further reduce the TAN of hydrocarbon stream. After recovery of alcohol from the reaction mixture, depending on TAN reduction required reaction mixture may be subjected to an adsorption stage, third stage pre-treatment, where an adsorbent mixture comprising of FCC spent catalyst is used to adsorb the TAN of feed hydrocarbon stream. The treated hydrocarbon stream is then co-processed with DCU feed stock for producing lighter hydrocarbons.Type: GrantFiled: June 27, 2022Date of Patent: May 30, 2023Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Shivam Ashok Dixit, Ponoly Ramachandran Pradeep, Jitumoni Brahma, Terapalli Hari Venkata Devi Prasad, Satyen Kumar Das, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11649200Abstract: The present invention discloses an integrated process and an apparatus for production of various alcohols and Oligomerization of Olefinic feed stocks comprising butylenes and mixture thereof. In this process the combined light olefinic hydrocarbon feedstock is divided into two streams and contacted in two different reaction zones, viz. hydration and oligomerization. The mixture of alcohols and oligomer product from hydration reaction is separated and the bottom stream from separator is routed to oligomerization reaction zone in a controlled quantity as selectivity enhancer. Both the reaction zones are operated at different conditions. The product from oligomerization zone is further separated in to lighter and heavier components. Each reaction zone may comprise series of reactors filled with acidic catalysts comprising ion exchange resins.Type: GrantFiled: September 7, 2021Date of Patent: May 16, 2023Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Saravanan Subramani, Pushkar Varshney, Reshmi Manna, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11643607Abstract: The present invention provides a process for production of graphite coke from an admixture of coal and petroleum-based hydrocarbons. This particularly describes a process wherein a mixture of coal tar pitch and hydrocarbon feedstock such as CLO is purified in a solvent treatment step and the purified mixed feedstock is subjected to thermal cracking to produce high quality graphite/needle coke. This process also provides a synergy in improved coke quality coke formation while using an admixture of coal tar pitch and CLO while subjected to common purification and coking steps.Type: GrantFiled: August 2, 2021Date of Patent: May 9, 2023Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Prantik Mondal, Ponoly Ramachandran Pradeep, Terapalli Hari Venkata Devi Prasad, Satyen Kumar Das, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Patent number: 11642656Abstract: The present invention provides a catalyst composition for the production of olefins from lighter alkanes by oxidative dehydrogenation route and methods of making the dehydrogenation catalyst composites.Type: GrantFiled: January 4, 2021Date of Patent: May 9, 2023Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Kumaresan Loganathan, Arumugam Velayutham Karthikeyani, Hima Bindu Doosa, Ram Mohan Thakur, Alex Cheru Pulikottil, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
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Publication number: 20230101524Abstract: The present invention provides a method for production of anode grade coke by processing crude oil feed stock in a DCU. The method comprising separation of low boiling light molecular weight components from heavier molecules and processing the same in Delayed Coker Unit after mixing with aromatic rich stream to overcome the operational issue envisaged due to processing of paraffin containing crude feed. The coke so obtained was calcined to produce an improved quality coke having lesser impurities (Sulfur <3 wt %) and better crystallinity.Type: ApplicationFiled: September 22, 2022Publication date: March 30, 2023Applicant: INDIAN OIL CORPORATION LIMITEDInventors: Shivam Ashok DIXIT, Terapalli Hari Venkata Devi PRASAD, Ponoly Ramachandran PRADEEP, Rajesh *, Satyen Kumar DAS, Madhusudan SAU, Gurpreet Singh KAPUR, Sankara Sri Venkata RAMAKUMAR