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1.发明申请公开(公告)号：US20190248720A1
公开(公告)日：2019-08-15
申请号：US16237319
申请日：2018-12-31
Applicant: INDIAN OIL CORPORATION LIMITED
Inventor： Saravanan SUBRAMANI , Prosenjit MAJI , Reshmi MANNA , Pushkar VARSHNEY , Latoor Lal SAROYA , Kamlesh GUPTA , Dheer SINGH , Debasis BHATTACHARYYA , Sanjiv Kumar MAZUMDAR , Sankara Sri Venkata RAMAKUMAR
Abstract: The present invention relates to a process for etherification of mixed olefinic light naphtha boiling in the range of C5-90° C. cut with simultaneous minimization of unreacted methanol concentration in the product. The etherification of mixed olefinic light naphtha produces the high octane blending component which can be blended directly in the gasoline pool without any recovery of the feed oxygenates like methanol, ethanol etc. which conventionally uses energy intensive separation processes.
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2.发明申请PROCESS FOR SIMULTANEOUS PRODUCTION OF ALCOHOLS AND OLIGOMER PRODUCT FROM HYDROCARBON FEED STOCK 审中-公开从油料进料库同时生产酒精和低聚物产品的方法公开(公告)号：US20150344383A1
公开(公告)日：2015-12-03
申请号：US14727307
申请日：2015-06-01
Applicant: Indian Oil Corporation Limited
Inventor： Saravanan SUBRAMANI , Reshmi MANNA , Pushkar VARSHNEY , Anju CHOPRA , Debasis BHATTACHARYYA , Brijesh KUMAR , Biswapriya DAS , Ravinder Kumar MALHOTRA
CPC classification number: C07C2/08 , B01J35/065 , B01J35/1009 , B01J35/1014 , B01J35/1061 , C07C2/28 , C07C29/04 , C07C2531/08 , C10G50/00 , C10G2400/02 , C10L1/02 , C10L1/06 , C10L1/16 , C10L1/1608 , C10L10/10 , C10L2200/0423 , C10L2270/023 , C07C11/02 , C07C31/10 , C07C31/12 , C07C31/125
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).
Abstract translation: 本发明涉及由含有异丁烯，丁烯，丁烷，丁二烯及其混合物的烯烃C4原料制备低聚物产物的方法。 特别地，本发明涉及在叔丁醇（TBA）和异丙醇（IPA）的存在下使用烯烃C 4原料制备低聚物的方法。
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公开(公告)号：US20210292670A1
公开(公告)日：2021-09-23
申请号：US17204732
申请日：2021-03-17
Applicant: Indian Oil Corporation Limited
Inventor： Saravanan SUBRAMANI , Vimal Kumar Upadhyay , Prosenjit Maji , Reshmi Manna , Vatsala Sugumaran , Mahalingam Vanamamalai , Madhusudan Sau , Gurpreet Singh Kapur , Sankara Sri Venkata Ramakumar
Abstract: 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.
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4.发明申请公开(公告)号：US20160333280A1
公开(公告)日：2016-11-17
申请号：US15222903
申请日：2016-07-28
Applicant: INDIAN OIL CORPORATION LIMITED
Inventor： Saravanan SUBRAMANI , Debasis BHATTACHARYYA , Reshmi MANNA , Satyen Kumar DAS , Tridib SARKAR , Santanam RAJAGOPAL
CPC classification number: C10G51/06 , B01J8/0055 , B01J8/1863 , B01J8/26 , B01J8/28 , B01J21/04 , B01J29/088 , B01J35/0006 , B01J35/0026 , B01J35/023 , B01J35/08 , B01J2208/00752 , B01J2208/00761 , B01J2208/00902 , B01J2208/00911 , C10G11/182 , C10G11/185 , C10G2300/104 , C10G2300/1044 , C10G2300/1059 , C10G2300/107 , C10G2300/1074 , C10G2300/1077 , C10G2300/301 , C10G2300/4018 , C10G2300/4025 , C10G2300/4093 , C10G2300/701 , C10G2300/703 , C10G2300/708 , C10G2300/807 , C10G2400/02 , C10G2400/20 , C10G2400/22 , C10G2400/28 , C10G2400/30
Abstract: The invention provides for a process and apparatus for simultaneous conversion of lighter and heavier hydrocarbon feedstocks into improved yields of light olefins in the range of C2 to C4, liquid aromatics in the range C6 to C8 mainly benzene, toluene, xylene and ethyl benzene and other useful products employing at least two different reactors operated in series with respect to catalyst flow and parallel with respect to feed flow under different regimes and process conditions with same catalyst system.
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公开(公告)号：US20220372382A1
公开(公告)日：2022-11-24
申请号：US17663530
申请日：2022-05-16
Applicant: Indian Oil Corporation Limited
Inventor： Pushkar VARSHNEY , Saravanan SUBRAMANI , Reshmi MANNA , Madhusudan SAU , Gurpreet Kapur SINGH , Sankara Sri Venkata RAMAKUMAR
Abstract: The present invention is related to the isomerization process in which a light naphtha stream comprising of paraffinic (mono and single branched), naphthenic and aromatic hydrocarbons in the range of C5-C7 is contacted with the solid catalyst in multiple reaction zones and in presence of hydrogen to produce high octane gasoline predominantly comprising of paraffins (single and di-branched) and naphthenes. The process scheme comprises of more than one isomerization reaction section operating at different temperatures and other operating conditions. The catalyst employed in these reaction sections is a high coordination sulfated mixed metal oxide catalyst which contains at least one noble metal and sulfated zirconia in addition to the other components. The process of the present invention also comprises more than one fractionation section and recycling of a particular stream to the reaction zone for improving the isomerization of light naphtha.
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Patent Agency Ranking
公开(公告)号：US20210252495A1
公开(公告)日：2021-08-19
申请号：US17178619
申请日：2021-02-18
Inventor： Chaitanya SAMPARA , Pushkar VARSHNEY , Reshmi MANNA , Saravanan SUBRAMANI , Madhusudan SAU , Debasis BHATTACHARYYA , Sankara Sri Venkata RAMAKUMAR
IPC: B01J35/00 , B01J21/06 , B01J37/02 , B01J37/00 , B01J35/02 , B01J23/42 , B01J31/04 , B01J23/44 , C07C5/22
Abstract: 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 μm, in presence of a combination of α-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.
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公开(公告)号：US20240216903A1
公开(公告)日：2024-07-04
申请号：US18524086
申请日：2023-11-30
Applicant: Indian Oil Corporation Limited
Inventor： Prosenjit MAJI , Saravanan SUBRAMANI , Satyen Kumar DAS , Madhusudan SAU
Abstract: The present invention relates to a process for in-situ regeneration of spent ion exchange resin catalyst used in the dimerization of olefins, etherification and alkylation processes by various impurities coming from feed streams and heavier oligomers forms as byproducts. The process involves backwashing with water which is followed by the step of naphtha washing. Naphtha washing involves filling the reactor with paraffinic naphtha and soaking the catalyst bed in naphtha. The step of naphtha washing is followed by naphtha circulation in the reactor. The last step involves treatment with diluted HCl solution wherein deposited impurities at the ion exchange sites are removed using diluted HCl. The process achieves up to 80% regeneration of spent catalysts.
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公开(公告)号：US20220081375A1
公开(公告)日：2022-03-17
申请号：US17478767
申请日：2021-09-17
Applicant: INDIAN OIL CORPORATION LIMITED
Inventor： Vineeth Venu NATH , Hima Bindu DOOSA , Ram Mohan THAKUR , Saravanan SUBRAMANI , Sahithi RAVULURI , Madhusudan SAU , Gurpreet Singh KAPUR , Sankara Sri Venkata RAMAKUMAR
Abstract: As part of an integrated oxidative alkane dehydrogenation and hydrogen generation process, carbon dioxide from Pressure Swing Adsorption (PSA) off gas stream of Hydrogen Generation Unit (HGU), and alkane from any known source are sent to oxidative dehydrogenation (ODH) unit for producing high value olefins, such as ethylene, propylene and butenes. Products formed from ODH reactor are separated and the stream comprising of hydrogen, carbon monoxide and methane are recycled to Shift reactor of HGU unit for enhanced production of hydrogen at PSA.
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公开(公告)号：US20220081373A1
公开(公告)日：2022-03-17
申请号：US17447828
申请日：2021-09-16
Applicant: Indian Oil Corporation Limited
Inventor： 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
Abstract: 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.
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10.发明申请公开(公告)号：US20220073441A1
公开(公告)日：2022-03-10
申请号：US17447028
申请日：2021-09-07
Applicant: Indian Oil Corporation Limited
Inventor： Saravanan SUBRAMANI , Pushkar VARSHNEY , Reshmi MANNA , Madhusudan SAU , Gurpreet Singh KAPUR , Sankara Sri Venkata RAMAKUMAR
Abstract: 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.
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