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公开(公告)号：US20210309587A1
公开(公告)日：2021-10-07
申请号：US16910027
申请日：2020-06-23
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , Lei Zhang , Brandon J. O'Neill , Mark A. Deimund , Alice Lin
Abstract: Systems and methods are provided for oligomerization of olefins to distillate boiling range products while also recycling naphtha boiling range olefins as part of the feed. By performing the olefin oligomerization while also recycling naphtha boiling range olefins, it has been discovered that the resulting distillate boiling range products can have an unexpected improvement in diesel combustion quality, such as an unexpected improvement in cetane rating. In order to manage coke formation and maintain consistent activity profile for the oligomerization catalyst, the reaction can be performed in a moving bed reactor. Additional temperature control can be maintained by the recycling of the naphtha boiling range portions of the oligomerization product back to the reactor.
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公开(公告)号：US20210017548A1
公开(公告)日：2021-01-21
申请号：US16870914
申请日：2020-05-09
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , Giovanni Pilloni , Kelsey M. McNeely
Abstract: The present disclosure relates to processes for producing hydrocarbon fuels from lignocellulosic biomass. A process may include introducing biomass to a pretreatment system, and a first separation system forming a pentose-rich stream and a pentose-lean stream. The pentose-lean stream may be introduced to a hydrolysis system forming a hydrolysate and the hydrolysate introduced to a second separation system forming a hexose-rich stream and a lignin stream. Additionally, at least one of the pentose-rich stream or the hexose-rich stream may be introduced to a bioreactor containing microorganisms configured to produce hydrocarbon fuels. Additionally, the present disclosure also relates to systems for the production of hydrocarbon fuels. A system may include a pretreatment system, a first separation system, a hydrolysis system, a second separation system, and one or more bioreactors. Alternatively a system may include a pretreatment system, a hydrolysis system, a sugar separation system, and one or more bioreactors.
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公开(公告)号：US20200248079A1
公开(公告)日：2020-08-06
申请号：US16263026
申请日：2019-01-31
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , Brian A. Cunningham , Anjaneya S. Kovvali , Brenda A. Raich , Christopher G. Smalley
IPC: C10G63/04
Abstract: Systems and methods are provided for conversion of light paraffinic gases to form liquid products in a two-stage reaction system. In a first stage, the light paraffinic gas is exposed to heat transfer particles in a side riser, where the heat transfer particles correspond to particles used in a separate process. Examples of a separate process include fluidized coking and fluid catalytic cracking. The conditions in the side riser can be selected to allow for conversion of at least a portion of the paraffins to olefins. After conversion, the converted olefin stream is passed to the second reaction stage while the heat transfer particles are returned to the separate process. The converted olefin stream is then exposed to a conversion catalyst under conditions for forming aromatics from the converted olefin stream in a second reaction stage. By performing the initial alkane conversion to olefins in the first reaction stage, the amount of coke formed during the aromatics formation process is reduced or minimized.
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公开(公告)号：US10188998B2
公开(公告)日：2019-01-29
申请号：US15924734
申请日：2018-03-19
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , Michael F. Raterman , Anjaneya S. Kovvali
Abstract: Systems and methods are provided for controlling the flow and transport of catalyst particles within a reaction system. The flow of catalyst particles can be managed using a rotating disc or wheel that is configured within a roller volume to allow for control over the rate of catalyst flow while reducing or minimizing attrition of the catalyst particles. This can be achieved in part by maintaining a relationship between the center of the rotating disc, the inlet for catalyst particles to the roller volume, and the top wall of the roller volume so that catalyst particles are not exposed to compressive forces and/or abrasion during rotation of the disc. Additionally or alternately, the disc and roller volume surfaces can be configured to reduce or minimize the potential for catalyst particles to become trapped in “dead space” regions within the roller volume. By using a disc to provide force for transport of particles through the roller volume, the speed of catalyst movement can be controlled at relatively slow catalyst flow rates with a reduced or minimized risk for clogging or plugging within the roller volume.
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公开(公告)号：US10577243B2
公开(公告)日：2020-03-03
申请号：US15343778
申请日：2016-11-04
Applicant: ExxonMobil Research and Engineering Company
Inventor： Matthew S. Ide , John F. Brody , Jianxin Wu , Joshua W. Allen , Frank Hershkowitz , Arsam Behkish , Anastasios I. Skoulidas
IPC: C01B3/40 , B01J23/10 , B01J23/46 , B01J23/63 , B01J35/04 , B01J35/10 , B01J37/02 , B01J37/08 , B01J38/02 , B01J23/89 , B01J8/04 , B01J23/83 , B01J35/00 , B01J37/00 , C01B3/46
Abstract: A reforming catalyst with improved surface area is provided by using high surface area alumina doped with a stabilizer metal as a catalyst support. The surface area of the catalyst can be higher than a typical reforming catalyst, and the surface area can also be maintained under high temperature operation. This can allow use of the catalyst for reforming in a higher temperature environment while maintaining a higher surface area, which can allow for improved dispersion and/or activity of an active metal such as rhodium on the catalyst support. The catalyst can be suitable for production of syngas from natural gas or other hydrocarbon-containing feeds.
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Patent Agency Ranking
公开(公告)号：US10351486B2
公开(公告)日：2019-07-16
申请号：US15343670
申请日：2016-11-04
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , Michael F. Raterman , Surya Bhaskara Reddy Karri
Abstract: Multiphase separators, processes and systems for converting an oxygenate and/or olefin feedstock to a hydrocarbon product are described herein.
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公开(公告)号：US11213796B2
公开(公告)日：2022-01-04
申请号：US16909983
申请日：2020-06-23
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , Anjaneya S. Kovvali , Adam C. Madlinger , Thomas M. Smith
Abstract: A feed distribution apparatus and method of using such an apparatus are provided for introducing a three-phase flow into a moving bed reactor that is operated under co-current flow conditions. The feed distribution apparatus can allow for separate introduction of liquid and solids in a manner that allows for even distribution of liquid within the solids. The gas portion of the flow can be introduced in any of a variety of convenient manners for distributing gas into a liquid or solid flow.
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公开(公告)号：US11130718B2
公开(公告)日：2021-09-28
申请号：US16909999
申请日：2020-06-23
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , Anjaneya S. Kovvali
IPC: C07C2/12 , C07C1/24 , B01J38/12 , B01J29/70 , B01J29/90 , B01J19/24 , B01J19/00 , C01B3/26 , C07C29/151
Abstract: Systems and methods are provided for upgrading of methane and/or small alkanes to distillate boiling range hydrocarbons. The upgrading is performed using a reaction system where various types of integration are provided from downstream reaction stages to upstream reaction stages. Such integration can include recycle of various reaction products as well as thermal integration. Having a reaction system that begins with reforming of hydrocarbons and finishes with production of distillate can enable unexpected synergies between downstream reaction stages and upstream reaction stages.
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公开(公告)号：US11299443B2
公开(公告)日：2022-04-12
申请号：US16910027
申请日：2020-06-23
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , Lei Zhang , Brandon J. O'Neill , Mark A. Deimund , Alice Lin
Abstract: Systems and methods are provided for oligomerization of olefins to distillate boiling range products while also recycling naphtha boiling range olefins as part of the feed. By performing the olefin oligomerization while also recycling naphtha boiling range olefins, it has been discovered that the resulting distillate boiling range products can have an unexpected improvement in diesel combustion quality, such as an unexpected improvement in cetane rating. In order to manage coke formation and maintain consistent activity profile for the oligomerization catalyst, the reaction can be performed in a moving bed reactor. Additional temperature control can be maintained by the recycling of the naphtha boiling range portions of the oligomerization product back to the reactor.
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公开(公告)号：US10913042B2
公开(公告)日：2021-02-09
申请号：US16214846
申请日：2018-12-10
Applicant: ExxonMobil Research and Engineering Company
Inventor： Arsam Behkish , David W. Maher , Paul F. Keusenkothen , Jaime A. Valencia
Abstract: Systems and methods are provided for conversion of light paraffinic gases to form liquid products in a process performed in a fixed bed radial-flow reactor. The light paraffins can correspond to C3+ paraffins. Examples of liquid products that can be formed include C6-C12 aromatics, such as benzene, toluene, and xylene. The fixed bed radial-flow reactor can allow for improved control over the reaction conditions for paraffin conversion in spite of the fixed bed nature of the reactor. This can allow the process to operate with improved efficiency while reducing or minimizing the complexity of operation relative to non-fixed bed reactor systems.
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