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公开(公告)号：US10647930B2
公开(公告)日：2020-05-12
申请号：US16118332
申请日：2018-08-30
发明人： 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
摘要： 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 μm, 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.
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公开(公告)号：US11866658B2
公开(公告)日：2024-01-09
申请号：US18084099
申请日：2022-12-19
发明人： Vasamsetty Naga Veera Hima Bindu , Mainak Sarkar , Ganesh Vitthalrao Butley , Ramesh Karumanchi , Sarvesh Kumar , Madhusudan Sau , Sankara Sri Venkata Ramakumar
CPC分类号： C10G67/14 , B01D3/148 , C10G2300/1048 , C10G2300/1096 , C10G2300/202 , C10G2300/301 , C10G2300/308 , C10G2300/4006 , C10G2300/4012 , C10G2300/4018
摘要： 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.
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公开(公告)号：US11548841B2
公开(公告)日：2023-01-10
申请号：US17448965
申请日：2021-09-27
发明人： 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
摘要： 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.
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公开(公告)号：US11999914B2
公开(公告)日：2024-06-04
申请号：US17481077
申请日：2021-09-21
发明人： Vasamsetty Naga Veera Hima Bindu , Mainak Sarkar , Ganesh Vitthalrao Butley , Ramesh Karumanchi , Sarvesh Kumar , Madhusudan Sau , Gurpreet Singh Kapur , Sankara Sri Venkata Ramakumar
CPC分类号： C10G67/14 , C10G7/00 , C10G25/00 , C10G31/00 , C10G45/08 , C10G45/50 , C10G67/06 , C10G2300/1037 , C10G2300/202 , C10G2300/207 , C10G2300/302 , C10G2300/308 , C10G2300/4006 , C10G2300/4012 , C10G2300/4018 , C10G2300/80 , C10G2400/30
摘要： 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.
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公开(公告)号：US11001771B2
公开(公告)日：2021-05-11
申请号：US16850822
申请日：2020-04-16
发明人： 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
摘要： 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.
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公开(公告)号：US20230193146A1
公开(公告)日：2023-06-22
申请号：US18084099
申请日：2022-12-19
发明人： Vasamsetty Naga Veera HIMA BINDU , Mainak Sarkar , Ganesh Vitthalrao Butley , Ramesh Karumanchi , Sarvesh Kumar , Madhusudan Sau , Sankara Sri Venkata Ramakumar
CPC分类号： C10G67/14 , B01D3/148 , C10G2300/1096 , C10G2300/202 , C10G2300/4006 , C10G2300/4012 , C10G2300/1048 , C10G2300/301 , C10G2300/4018 , C10G2300/308
摘要： 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.
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公开(公告)号：US11578277B2
公开(公告)日：2023-02-14
申请号：US17520455
申请日：2021-11-05
发明人： Nayan Das , Mainak Sarkar , Ganesh Vitthalrao Butley , Ramesh Karumanchi , Sarvesh Kumar , Madhusudan Sau , Gurpreet Singh Kapur , Sankara Sri Venkata Ramakumar
IPC分类号： C10G65/12
摘要： 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.
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公开(公告)号：US11498038B2
公开(公告)日：2022-11-15
申请号：US17364182
申请日：2021-06-30
发明人： Pravesh Kumar , Ramesh Karumanchi , Sarvesh Kumar , Madhusudhan Sau , Gurpreet Singh Kapur , Sankara Sri Venkata Ramakumar
IPC分类号： B01F5/06 , B01J19/00 , C10G45/00 , C10G47/00 , B01F3/04 , B01F25/431 , B01F23/232 , B01F25/00
摘要： The invention relates to Quench box assembly comprising quench pipe and quench box, to mix quench gas and vapor-liquid effluent from previous catalyst bed to achieve equilibrium temperature before entering the next bed. The quench pipe is in the form of ring having aperture while quench box consists of swirling section and a mixing chamber. The swirling section consists of inclined baffles to provide swirling action to incoming stream and the turbulence created by the swirling action increases the heat transfer rate thus requiring the smaller reactor volume to attain equilibrium temperature. The perforated plate being open from all the sides allowing the liquid to flow uniformly from all directions thus providing uniform distribution on the distributor tray. Hence, eliminates the requirement of rough liquid distributor before the distribution tray.
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公开(公告)号：US20220001341A1
公开(公告)日：2022-01-06
申请号：US17364182
申请日：2021-06-30
发明人： Pravesh Kumar , Ramesh Karumanchi , Sarvesh Kumar , Madhusudhan Sau , Gurpreet Singh Kapur , Sankara Sri Venkata Ramakumar
摘要： The invention relates to Quench box assembly comprising quench pipe and quench box, to mix quench gas and vapor-liquid effluent from previous catalyst bed to achieve equilibrium temperature before entering the next bed. The quench pipe is in the form of ring having aperture while quench box consists of swirling section and a mixing chamber. The swirling section consists of inclined baffles to provide swirling action to incoming stream and the turbulence created by the swirling action increases the heat transfer rate thus requiring the smaller reactor volume to attain equilibrium temperature. The perforated plate being open from all the sides allowing the liquid to flow uniformly from all directions thus providing uniform distribution on the distributor tray. Hence, eliminates the requirement of rough liquid distributor before the distribution tray.
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公开(公告)号：US11141707B2
公开(公告)日：2021-10-12
申请号：US16890153
申请日：2020-06-02
发明人： Pravesh Kumar , Darshankumar Manubhai Dave , Ramesh Karumanchi , Sarvesh Kumar , Madhusudan Sau , Gurpreet Singh Kapur , Sankara Sri Venkata Ramakumar
摘要： An inlet diffuser for the fixed-bed reactor is disclosed. The inlet diffuser comprises a truncated cone adapted to receive a stream of gas-liquid mixture. The truncated cone includes at least one opening formed on a circumference of the truncated cone. Further, the inlet diffuser comprises a vertical baffle plate in each of the openings and at least one horizontal baffle coupled to the truncated cone to absorb momentum of the stream received by the truncated cone. Furthermore, it comprises a cylindrical chamber in fluid communication with the truncated cone and adapted to receive the stream from the truncated cone. The cylindrical chamber includes at least one slot to discharge the stream from the inlet diffuser and a splash plate is disposed at a bottom portion of the cylindrical chamber with apertures to discharge the stream from the inlet diffuser.
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