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Patent Agency Ranking
公开(公告)号：US20190099706A1
公开(公告)日：2019-04-04
申请号：US16140657
申请日：2018-09-25
Applicant: Chevron U.S.A. Inc.
Inventor： Vijay R. Sampath
Abstract: An integrated system for onboard scrubbing of a marine exhaust gas on a ship, comprising: a) a Venturi quencher having: i) two liquid inlets that feed quench water to the Venturi quencher; and ii) a hot exhaust gas entry that feeds the hot marine exhaust gas from an engine on the ship; and b) the rotating packed bed device, having: iii) a stationary gas distributor, placed along an outer circumference of the RPB device, that disengages a quenched marine exhaust gas from a cooled two-phase mixture, and uniformly distributes the quenched marine exhaust gas along the outer circumference of the RPB device; and iv) a stationary liquid distributor, centrally positioned, and with multiple liquid rings that are fitted with spray nozzles that spray a seawater along an inner circumference of the RPB device. Also, processes for using the integrated system, and a ship comprising the integrated system.
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公开(公告)号：US20180361312A1
公开(公告)日：2018-12-20
申请号：US15995278
申请日：2018-06-01
Applicant: Chevron U.S.A. Inc.
Inventor： Marcus Vinicius Dutra e Mello , Vijay R. Sampath , Steven Xugi Song
Abstract: A method for scrubbing flue gas, comprising: providing a rotating packed bed device onboard a ship or an offshore floating vessel; mixing seawater with the flue gas under centrifugal force in the rotating packed bed device to prevent blow-by and produce a scrubbed flue gas having low sulfur; and discharging the scrubbed flue gas; wherein the scrubbed flue gas has less than half of the sulfur that was originally present in the flue gas before the mixing. Also, a system for scrubbing the flue gas according to the method described. Also, a marine ship, comprising: an engine that combusts HSFO; a rotating packed bed device, in a hull or funnel of the ship, comprising a rotating shaft and a porous material that mixes seawater with flue gas and reduces sulfur in the flue gas; and a connector from the engine and the rotating packed bed device.
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公开(公告)号：US20210115341A1
公开(公告)日：2021-04-22
申请号：US17076471
申请日：2020-10-21
Applicant: CHEVRON U.S.A. INC
Inventor： Vijay R. Sampath
Abstract: The present invention pertains to improved processes and catalysts for aromatization. The processes generally contacting a feed stream comprising a naphtha fraction having a C6 to C8 content with a catalyst pellet composition to form aromatic hydrocarbons. The catalyst pellet composition generally comprises a plurality of cylindrical pellets each pellet comprising a Group VIII metal on a zeolite. The pellets may have (a) a plurality of holes passing through the length of the cylindrical pellets, (b) a dome-shaped top and bottom, and (c) a plurality of semi-circular grooves along the length of the exterior of the cylinder.
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公开(公告)号：US11499102B2
公开(公告)日：2022-11-15
申请号：US17076471
申请日：2020-10-21
Applicant: CHEVRON U.S.A. INC
Inventor： Vijay R. Sampath
Abstract: The present invention pertains to improved processes and catalysts for aromatization. The processes generally contacting a feed stream comprising a naphtha fraction having a C6 to C8 content with a catalyst pellet composition to form aromatic hydrocarbons. The catalyst pellet composition generally comprises a plurality of cylindrical pellets each pellet comprising a Group VIII metal on a zeolite. The pellets may have (a) a plurality of holes passing through the length of the cylindrical pellets, (b) a dome-shaped top and bottom, and (c) a plurality of semi-circular grooves along the length of the exterior of the cylinder.
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公开(公告)号：US11491441B2
公开(公告)日：2022-11-08
申请号：US15995278
申请日：2018-06-01
Applicant: Chevron U.S.A. Inc.
Inventor： Marcus Vinicius Dutra e Mello , Vijay R. Sampath , Steven Xugi Song
Abstract: A method for scrubbing flue gas, comprising: providing a rotating packed bed device onboard a ship or an offshore floating vessel; mixing seawater with the flue gas under centrifugal force in the rotating packed bed device to prevent blow-by and produce a scrubbed flue gas having low sulfur; and discharging the scrubbed flue gas; wherein the scrubbed flue gas has less than half of the sulfur that was originally present in the flue gas before the mixing. Also, a system for scrubbing the flue gas according to the method described. Also, a marine ship, comprising: an engine that combusts HSFO; a rotating packed bed device, in a hull or funnel of the ship, comprising a rotating shaft and a porous material that mixes seawater with flue gas and reduces sulfur in the flue gas; and a connector from the engine and the rotating packed bed device.
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