Patents by Inventor Reshmi Manna
Reshmi Manna 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: 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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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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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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Publication number: 20220372382Abstract: 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.Type: ApplicationFiled: May 16, 2022Publication date: November 24, 2022Inventors: Pushkar VARSHNEY, Saravanan SUBRAMANI, Reshmi MANNA, Madhusudan SAU, Gurpreet Kapur SINGH, Sankara Sri Venkata RAMAKUMAR
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Patent number: 11274257Abstract: The present invention provides a process for a production of light olefins and aromatics from cracked light naphtha by selective cracking. The present invention thus provides a process for up grading cracked olefinic naphtha to high value petrochemical feed stocks. This process is based on catalytic cracking in which the catalyst activity is optimized by depositing coke for production of light olefins and aromatics. The proposed process has high flexibility and can be operated either in maximizing olefins as reflected from the PIE ratio or in maximizing aromatics (BTX) at different modes of operation depending upon the product requirement.Type: GrantFiled: September 4, 2019Date of Patent: March 15, 2022Assignee: Indian Oil Corporation LimitedInventors: Subramani Saravanan, Bandaru Venkata Hari Prasadgupta, Prosenjit Maji, Shoeb Hussain Khan, Jagdev Kumar Dixit, Shakti Singh, Reshmi Manna, Madhusudan Sau, Debasis Bhattacharyya, Sanjiv Kumar Mazumdar, Sankara Sri Venkata Ramakumar
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Publication number: 20220073441Abstract: 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: ApplicationFiled: September 7, 2021Publication date: March 10, 2022Inventors: Saravanan SUBRAMANI, Pushkar VARSHNEY, Reshmi MANNA, Madhusudan SAU, Gurpreet Singh KAPUR, Sankara Sri Venkata RAMAKUMAR
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Publication number: 20210292670Abstract: 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: ApplicationFiled: March 17, 2021Publication date: September 23, 2021Inventors: 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: 20210252495Abstract: 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 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: ApplicationFiled: February 18, 2021Publication date: August 19, 2021Inventors: Chaitanya SAMPARA, Pushkar VARSHNEY, Reshmi MANNA, Saravanan SUBRAMANI, Madhusudan SAU, Debasis BHATTACHARYYA, Sankara Sri Venkata RAMAKUMAR
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Publication number: 20200080006Abstract: The present invention provides a process for a production of light olefins and aromatics from cracked light naphtha by selective cracking. The present invention thus provides a process for up grading cracked olefinic naphtha to high value petrochemical feed stocks. This process is based on catalytic cracking in which the catalyst activity is optimized by depositing coke for production of light olefins and aromatics. The proposed process has high flexibility and can be operated either in maximizing olefins as reflected from the PIE ratio or in maximizing aromatics (BTX) at different modes of operation depending upon the product requirement.Type: ApplicationFiled: September 4, 2019Publication date: March 12, 2020Inventors: Subramani SARAVANAN, Bandaru Venkata HARI PRASADGUPTA, Prosenjit MAJI, Shoeb Hussain KHAN, Jagdev Kumar DIXIT, Shakti SINGH, Reshmi MANNA, Madhusudan SAU, Debasis BHATTACHARYYA, Sanjiv Kumar MAZUMDAR, Sankara Sri Venkata RAMAKUMAR
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Patent number: 10584085Abstract: 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.Type: GrantFiled: December 31, 2018Date of Patent: March 10, 2020Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Saravanan Subramani, Prosenjit Maji, Reshmi Manna, Pushkar Varshney, Latoor Lal Saroya, Kamlesh Gupta, Dheer Singh, Debasis Bhattacharyya, Sanjiv Kumar Mazumdar, Sankara Sri Venkata Ramakumar
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Publication number: 20190248720Abstract: 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.Type: ApplicationFiled: December 31, 2018Publication date: August 15, 2019Applicant: INDIAN OIL CORPORATION LIMITEDInventors: Saravanan SUBRAMANI, Prosenjit MAJI, Reshmi MANNA, Pushkar VARSHNEY, Latoor Lal SAROYA, Kamlesh GUPTA, Dheer SINGH, Debasis BHATTACHARYYA, Sanjiv Kumar MAZUMDAR, Sankara Sri Venkata RAMAKUMAR
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Patent number: 10131589Abstract: 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: GrantFiled: June 1, 2015Date of Patent: November 20, 2018Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Saravanan Subramani, Reshmi Manna, Pushkar Varshney, Anju Chopra, Debasis Bhattacharyya, Brijesh Kumar, Biswapriya Das, Ravinder Kumar Malhotra
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Publication number: 20160333280Abstract: 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.Type: ApplicationFiled: July 28, 2016Publication date: November 17, 2016Applicant: INDIAN OIL CORPORATION LIMITEDInventors: Saravanan SUBRAMANI, Debasis BHATTACHARYYA, Reshmi MANNA, Satyen Kumar DAS, Tridib SARKAR, Santanam RAJAGOPAL
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Patent number: 9433912Abstract: 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.Type: GrantFiled: March 30, 2011Date of Patent: September 6, 2016Assignee: INDIAN OIL CORPORATION LIMITEDInventors: Saravanan Subramani, Debasis Bhattacharyya, Reshmi Manna, Satyen Kumar Das, Tridib Sarkar, Santanam Rajagopal
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Publication number: 20150344383Abstract: 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: ApplicationFiled: June 1, 2015Publication date: December 3, 2015Inventors: Saravanan SUBRAMANI, Reshmi MANNA, Pushkar VARSHNEY, Anju CHOPRA, Debasis BHATTACHARYYA, Brijesh KUMAR, Biswapriya DAS, Ravinder Kumar MALHOTRA
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Publication number: 20130056393Abstract: 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.Type: ApplicationFiled: March 30, 2011Publication date: March 7, 2013Applicant: INDIAN OIL CORPORATION LIMITEDInventors: Saravanan Subramani, Debasis Bhattacharyya, Reshmi Manna, Satyen Kumar Das, Tridib Sarkar, Santanam Rajagopal