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公开(公告)号：US11476484B1
公开(公告)日：2022-10-18
申请号：US16672663
申请日：2019-11-04
Applicant: PRECISION COMBUSTION, INC.
Inventor： Subir Roychoudhury , Timothy LaBreche , Saurabh Vilekar , Francesco Macri
IPC: H01M8/0612 , H01M8/1246 , H01M8/04007 , H01M8/2475 , H01M8/04014 , B01J19/00 , B01J23/74 , H01M8/12
Abstract: A thermally integrated hotbox apparatus combining a steam reformer, a plurality of solid oxide fuel cell (SOFC) stacks, a plurality of oxidant manifolds, and at least one heat extractor. The steam reformer occupies a central position in the hotbox, around which are disposed in spaced-apart relation a plurality of SOFC stacks. A burner may be associated with the steam reformer, either within or outside the hotbox. An oxidant manifold is disposed between each pair of adjacent SOFC stacks. A heat exchanger is incorporated between an SOFC stack and an oxygen manifold. The hotbox design optimally captures thermal heat from the SOFC stacks for use in producing steam and operating the endothermic steam reformer. The apparatus reduces duty cycle of the burner, which produces heat and steam needed for operation of the endothermic steam reformer.
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公开(公告)号：US11454602B2
公开(公告)日：2022-09-27
申请号：US16855052
申请日：2020-04-22
Applicant: PRECISION COMBUSTION, INC.
Inventor： Christian Junaedi , Subir Roychoudhury
Abstract: A portable, compact, real-time and accurate sensor and method for deriving a physicochemical property of a liquid fuel, such as cetane number, carbon content, carbon/hydrogen (C/H) atomic ratio, or heating value (net heat of combustion). The sensor comprises a constant-volume ignition chamber equipped for measuring ignition delay and magnitude of a peak rise in pressure or temperature following dispensation of a liquid fuel into the chamber. The sensor utilizes air at atmospheric pressure and microliter quantities of fuel. The sensor can be implemented in real-time refinery operations for blending diesel fuels that meet government mandated cetane number standards as well as in applications for standardizing jet, biodiesel, and synthetic fuels, which presently are not classified by any physicochemical property.
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公开(公告)号：US12103365B1
公开(公告)日：2024-10-01
申请号：US17695320
申请日：2022-03-15
Applicant: Precision Combustion, Inc.
Inventor： Codruta Maria Zoican-Loebick , Christian Junaedi , Julian Prada , Subir Roychoudhury
IPC: B60H3/02
CPC classification number: B60H3/024 , B60H2003/028
Abstract: A dehumidification system comprising an enclosure having sidewalls, the sidewalls defining a cavity; an inlet fluidly coupled to the cavity, the inlet configured to receive air into the cavity; an outlet fluidly coupled to the cavity, the outlet configured to discharge the air from the cavity; a sorbent bed located within the cavity fluidly coupled to the inlet and the outlet; the sorbent bed comprising a substrate with dehumidification materials attached to the substrate and coupled to an insulator; a regenerable power source electrically coupled to the substrate configured to electrically heat the substrate to a predetermined temperature configured to regenerate the sorbent bed and a blower fluidly coupled to the inlet and the outlet, the blower configured to transfer air from the inlet through the sorbent bed and out the outlet.
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公开(公告)号：US11165073B2
公开(公告)日：2021-11-02
申请号：US16336158
申请日：2017-10-16
Applicant: PRECISION COMBUSTION, INC.
Inventor： Christian Junaedi , Subir Roychoudhury , Saurabh Vilekar , Kyle Hawley
IPC: H01M8/04007 , H01M8/12 , H01M8/18 , H01M8/0612 , C25B15/02 , C25B15/08 , 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 in 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：US20210202964A1
公开(公告)日：2021-07-01
申请号：US17193054
申请日：2021-03-05
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
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：US20200292479A1
公开(公告)日：2020-09-17
申请号：US16855052
申请日：2020-04-22
Applicant: PRECISION COMBUSTION, INC.
Inventor： Christian Junaedi , Subir Roychoudhury
Abstract: A portable, compact, real-time and accurate sensor and method for deriving a physicochemical property of a liquid fuel, such as cetane number, carbon content, carbon/hydrogen (C/H) atomic ratio, or heating value (net heat of combustion). The sensor comprises a constant-volume ignition chamber equipped for measuring ignition delay and magnitude of a peak rise in pressure or temperature following dispensation of a liquid fuel into the chamber. The sensor utilizes air at atmospheric pressure and microliter quantities of fuel. The sensor can be implemented in real-time refinery operations for blending diesel fuels that meet government mandated cetane number standards as well as in applications for standardizing jet, biodiesel, and synthetic fuels, which presently are not classified by any physicochemical property.
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公开(公告)号：US20200131984A1
公开(公告)日：2020-04-30
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 , F02M26/36 , F02B43/12 , F02B47/06 , B01J23/46 , B01J35/06 , C01B3/38 , C10L1/12 , C10L1/02 , C10L10/02
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：US09903585B1
公开(公告)日：2018-02-27
申请号：US14683527
申请日：2015-04-10
Applicant: Precision Combustion, Inc.
Inventor： Bruce Crowder , Subir Roychoudhury , Richard Mastanduno
CPC classification number: F23C13/02 , F02G1/055 , F02G2254/10 , F23C13/08 , F23R3/40
Abstract: A catalytic burner comprising a burner chamber and a utilization chamber, the burner chamber functionally divided into a fuel-oxidant mixing zone and a catalytic combustion zone. The burner chamber occupies a space disposed between outer and inner tubular walls of the burner. The utilization chamber, which is a space bounded by the inner tubular wall, remains hollow for secondary useful purposes, for example, connection to a heat sink of a Stirling engine and/or incorporation of a second heat source (e.g., solar or geothermal heat source). Auxiliary system components can also be packaged into the utilization chamber. The burner can function in hybrid flame and/or flameless modes, and can further include a recuperator to capture heat by-passing the heat sink.
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19.发明授权
公开(公告)号：US09446365B2
公开(公告)日：2016-09-20
申请号：US14192923
申请日：2014-02-28
Applicant: Precision Combustion, Inc.
Inventor： Christian Junaedi , Kyle Hawley , Subir Roychoudhury
CPC classification number: B01J8/06 , B01J19/2495 , B01J2219/00085 , C07C1/12 , C07C2521/04 , C07C2521/06 , C07C2521/08 , C07C2521/10 , C07C2523/42 , C07C2523/44 , C07C2523/46 , C07C2523/745 , C07C2523/75 , C07C2523/755 , C07C9/04
Abstract: A Sabatier process involving contacting carbon dioxide and hydrogen in a first reaction zone with a first catalyst bed at a temperature greater than a first designated temperature; feeding the effluent from the first reaction zone into a second reaction zone, and contacting the effluent with a second catalyst bed at a temperature equal to or less than a second designated temperature, so as to produce a product stream comprising water and methane. The first and second catalyst beds each individually comprise an ultra-short-channel-length metal substrate. An apparatus for controlling temperature in an exothermic reaction, such as the Sabatier reaction, is disclosed.
Abstract translation: 一种Sabatier方法，包括使第一反应区中的二氧化碳和氢气在大于第一指定温度的温度下与第一催化剂床接触; 将来自第一反应区的流出物进料到第二反应区，并在等于或小于第二指定温度的温度下将流出物与第二催化剂床接触，以产生包含水和甲烷的产物流。 第一催化剂床和第二催化剂床各自独立地包括超短通道长度的金属基材。 公开了一种用于控制放热反应中的温度的装置，例如萨巴蒂尔（Sabatier）反应。
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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.
