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公开(公告)号：US11739277B2
公开(公告)日：2023-08-29
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
CPC classification number: C10L3/12 , B01D3/14 , B01J39/05 , B01J39/19 , C10L3/103 , C10L2290/141 , C10L2290/543 , C10L2290/548
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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公开(公告)号：US10584085B2
公开(公告)日：2020-03-10
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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3.发明授权公开(公告)号：US11274257B2
公开(公告)日：2022-03-15
申请号：US16560531
申请日：2019-09-04
Applicant: Indian Oil Corporation Limited
Inventor： 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
Abstract: 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.
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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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