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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：US10760014B2
公开(公告)日：2020-09-01
申请号：US15239363
申请日：2016-08-17
发明人： Pravesh Kumar , Pappu Naresh , Vinay Kumar Chaudhary , Darshankumar Manubhai Dave , Kamal Kumar , Murugan Balasundaram , Karumanchi Ramesh , Ganesh Vitthalrao Butley , Om Prakash Nandwani , Madhusudan Sau , Brijesh Kumar , Biswapriya Das
IPC分类号： C10G67/00 , B01J35/12 , C10G7/06 , C10G47/26 , C10G65/12 , C10G47/00 , C10G45/62 , B01J31/02
摘要： This invention relates to a process for hydro cracking of heavy oils. More particularly, this invention relates to a catalytic process for converting heavy oils, such as vacuum gas oil (VGO) and VGO containing a high proportion of vacuum resid (VR) to middle distillate products.
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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：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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公开(公告)号：US10900507B2
公开(公告)日：2021-01-26
申请号：US16206939
申请日：2018-11-30
发明人： Pravesh Kumar , Kamal Kumar , Darshankumar Manubhai Dave , Ramesh Karumanchi , Madhusudan Sau , Debasis Bhattacharyya , Sanjiv Kumar Mazumdar , Sankara Sri Venkata Ramakumar
摘要： A distribution unit for distributing a multi-phase fluid mixture is disclosed. The distribution unit includes a distribution body defining a first passage, and a first distal body portion having a plurality of first slots. The distribution body includes a second distal body portion having a plurality of second slots distributed on a side wall of the second distal body portion. Each of the plurality of second slots is adapted to accommodate a baffle plate. The second distal body portion includes at least one aperture formed on a bottom wall of the second distal body portion. The plurality of first slots, the plurality of second slots, and the at least one aperture are in fluid communication with the first passage to discharge the flow of the multi-phase fluid.
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公开(公告)号：US20200376455A1
公开(公告)日：2020-12-03
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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公开(公告)号：US10201810B2
公开(公告)日：2019-02-12
申请号：US15232695
申请日：2016-08-09
发明人： Brijesh Kumar , Pravesh Kumar , Kamal Kumar , Ganesh Vitthalrao Butley , Madhusudan Sau , Biswapriya Das
IPC分类号： C10G65/00 , B01J37/08 , C10G65/12 , B01J23/745 , B01J23/28 , B01J37/18 , B01J37/20 , B01J35/00 , C10G47/02 , C10G47/26 , C01B32/20 , B01J23/883
摘要： The present invention discloses a catalyst and process for hydrocracking of heavy hydrocarbon oils having majority portion boiling above 525° C. in the presence of hydrogen. A process comprising first step of converting heavy oil into lighter products in the presence of catalyst and hydrogen in slurry phase is disclosed. The process further comprises recycling of part of liquid products (HVGO) along with fresh heavy oil for improving the product selectivity. This recycled HVGO is having high concentrations of aromatics compounds. The separation of particles generated during the reaction at reactor exit also avoids the chances of choking of downstream sections.
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