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公开(公告)号:US20210236983A1
公开(公告)日:2021-08-05
申请号:US17211946
申请日:2021-03-25
Applicant: Precision Combustion, Inc.
Inventor: Christian Junaedi , Codruta Maria Zoican-Loebick , Kyle Hawley
Abstract: A first process and sorbent for removing ammonia from a gaseous environment, the sorbent comprised of graphene oxide having supported thereon at least one compound selected from metal salts, metal oxides and acids, each of which is capable of adsorbing ammonia. A second process and sorbent system for removing ammonia and a volatile organic compound from a gaseous environment; the sorbent system comprised of two graphene-based materials: (a) the aforementioned graphene oxide, and (b) a nitrogen and oxygen-functionalized graphene. The sorbents are regenerable under a pressure gradient with little or no application of heat. The processes are operable through multiple adsorption-desorption cycles and are applicable to purifying and revitalizing air contaminated with ammonia and organic compounds as may be found in spacesuits, aerospace cabins, underwater vehicles, and other confined-entry environments.
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公开(公告)号:US11011763B2
公开(公告)日:2021-05-18
申请号:US16336146
申请日:2017-10-16
Applicant: PRECISION COMBUSTION, INC.
Inventor: Christian Junaedi , Subir Roychoudhury , Kyle Hawley , Saurabh Vilekar
IPC: H01M8/04007 , C25B15/02 , C25B15/08 , H01M8/0612 , H01M8/12 , H01M8/18 , C25B1/00 , H01M8/2483 , H01M8/0258 , H01M8/2425 , C25B1/04 , C25B9/19 , C25B9/70 , C25B9/77 , C25B11/00 , H01M8/124
Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.
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公开(公告)号:US10787959B2
公开(公告)日:2020-09-29
申请号:US16463409
申请日:2017-12-06
Applicant: PRECISION COMBUSTION, INC.
Inventor: Subir Roychoudhury , Richard Mastanduno , Eric Edward Allocco , Saurabh Vilekar
IPC: F02B51/02 , F02M27/02 , C01B3/38 , C10L1/02 , F02M26/36 , B01J23/46 , B01J35/06 , C10L1/12 , C10L10/02 , F02B43/12 , F02B47/06 , F02B43/10
Abstract: A process of operating a spark-ignited internal combustion engine (SI-ICE) with improved fuel efficiency and reduced emissions including under steady state and under lean-operating conditions at high overall air to fuel (AFR) ratios. A first supply of high octane hydrocarbon fuel, such as gasoline or natural gas, and a first supply of oxidant are fed to a fuel reformer to produce a gaseous reformate with a reforming efficiency of greater than 75 percent relative to equilibrium. The gaseous reformate is mixed with a second supply of oxidant, after which the resulting reformate blended oxidant is fed with a second supply of high octane hydrocarbon fuel to the SI-ICE for combustion. Steady state fuel efficiency is improved by more than 3 percent, when the reformate comprises from greater than about 1 to less than about 18 percent of the total volume of reformate blended oxidant fed to the engine.
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公开(公告)号:US10525434B1
公开(公告)日:2020-01-07
申请号:US16048465
申请日:2018-07-30
Applicant: Precision Combustion, Inc.
Inventor: Jeffrey Weissman
Abstract: A chemical reactor for use in a chemical process wherein a reactant and/or a target product is prone to produce undesirable byproducts through secondary reactions. The reactor is configured with a first flow passage for passing a flow of an overly reactive reactant; a permeable first wall for controlled flow of the overly reactive reactant into a second flow passage providing a flow of a second reactant; a permeable second wall having a catalyst supported on an inner surface thereof for catalyzing reaction of the reactants flowing in the second flow passage; the permeable second wall passing through a flow containing the target product; and a non-permeable third wall defining a third flow passage for exiting the product mixture. The reactor can be employed in selective oxidation, oxidative dehydrogenation, and alkylation processes to reduce the formation of byproducts.
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公开(公告)号:US10411281B1
公开(公告)日:2019-09-10
申请号:US15894016
申请日:2018-02-12
Applicant: Precision Combustion, Inc.
Inventor: Saurabh Vilekar , Subir Roychoudhury , Christian Junaedi , Richard Mastanduno
IPC: H01M8/04007 , H01M8/04014 , H01M8/0612 , H01M8/1246 , H01M8/2425 , C01B3/40 , B01J19/24 , H01M8/124
Abstract: This invention pertains to a thermally-integrated solid oxide fuel cell system, providing for a solid oxide fuel cell stack disposed within a stack hotbox; a heat extractor disposed within the stack hotbox in thermal communication with the fuel cell stack and circumscribed around a full or partial perimeter of the fuel cell stack; a fuel reformer-combustor module disposed within the stack hotbox in thermal communication with the stack and disposed around a full or partial perimeter of the heat extractor; and a manifold fluidly connecting an outlet of the heat extractor to an inlet of a reformer section of the fuel reformer-combustor module.
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公开(公告)号:US20190226101A1
公开(公告)日:2019-07-25
申请号:US16336146
申请日:2017-10-16
Applicant: PRECISION COMBUSTION, INC.
Inventor: Christian Junaedi , Subir Roychoudhury , Kyle Hawley , Saurabh Vilekar
IPC: C25B9/08 , C25B1/06 , C25B15/02 , C25B15/08 , C25B9/20 , H01M8/04007 , H01M8/0612 , H01M8/12 , H01M8/18
Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.
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公开(公告)号:US10001278B1
公开(公告)日:2018-06-19
申请号:US14998388
申请日:2015-12-28
Applicant: Precision Combustion, Inc.
Inventor: Subir Roychoudhury , Richard Mastanduno , Bruce Crowder , David Lang Spence , Francesco Macri , Julian David Prada Bernal
CPC classification number: F23K5/08 , F23D5/126 , F23D17/002 , F23K2900/05081
Abstract: An apparatus and method for operating a gas-fired burner on a liquid fuel. The apparatus integrates a catalytic liquid fuel reformer with a flame burner designed for operation on a gaseous fuel of high Wobbe Index, e.g., natural gas. The method involves reacting a mixture of a liquid fuel and oxidant in a catalytic reformer to obtain a gaseous reformate having a low Wobbe Index; and thereafter combusting the gaseous reformate, optionally augmented with liquid co-fuel and oxidant, in the gas-fired burner under diffusion flame conditions. The invention allows commercial gas-fired appliances, such as stoves, ovens, ranges, grills, griddles, stock pot burners, clothes dryers, hot water heaters, and boilers to be operated on a liquid fuel, which offers advantages in logistics and camp operations.
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公开(公告)号:US20030141463A1
公开(公告)日:2003-07-31
申请号:US10331792
申请日:2002-12-30
Applicant: Precision Combustion, Inc.
Inventor: Theodore R. Strickland
IPC: G21G004/00
Abstract: The invention is an apparatus for producing an IR (infra-red) signature. In the method, the apparatus is mounted on a target to give the target an infra-red signature whereby the target can be acquired by an appropriate weapon sensor.
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公开(公告)号:US11722092B2
公开(公告)日:2023-08-08
申请号:US18080923
申请日:2022-12-14
Applicant: PRECISION COMBUSTION, INC.
Inventor: Subir Roychoudhury , Richard Mastanduno , Francesco Macri , Bruce Crowder
Abstract: A thermophotovoltaic generator incorporating a two-stage combustor for providing heat to a thermophotovoltaic cell. Combustor parts include a partial oxidation reactor, which functions catalytically to convert a hydrocarbon fuel and a first supply of an oxidant into a gaseous partial oxidation product; and further include downstream thereof, a deep oxidation reactor including a premixer plenum fluidly connected to a heat spreader comprising a porous matrix, such as a ceramic foam. Functionally, the deep oxidation reactor converts the gaseous partial oxidation product and a second supply of oxidant into complete combustion products. Heat produced by the two-stage combustor generates radiative energy from a photon emitter, which is directly converted to electricity in a photovoltaic diode cell.
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公开(公告)号:US11666852B1
公开(公告)日:2023-06-06
申请号:US17015796
申请日:2020-09-09
Applicant: Precision Combustion Inc.
Inventor: Jeffrey G. Weissman , Bruce Crowder , Richard Mastanduno
IPC: B01D53/04
CPC classification number: B01D53/0438 , B01D53/0431 , B01D53/0446 , B01D2253/102 , B01D2257/406 , B01D2257/504 , B01D2259/40096
Abstract: A regenerable adsorbent system having as constituent parts: a cylindrical perforated plate defining an interior plenum, around which is wrapped at least one layer of sorbent structure supporting a sorbent; and in thermal communication with the sorbent structure is disposed an electrical resistance heater, such as, a heating cable wrapped around the sorbent structure. In one embodiment, the perforated plate includes one or more flow constrictors disposed at a downstream end of the plate. Variations include alternating sections of sorbent structure and heating cable; as well as inserting a porous insulating material to retard heat losses. The system is useful for removing a target compound, such as a contaminant VOC, ammonia, or carbon dioxide, from a fluid flowstream, such as air. When the sorbent is saturated, the system is regenerated by heating the sorbent structure via the electrical resistance heater.