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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：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：US11022318B1
公开(公告)日：2021-06-01
申请号：US16527198
申请日：2019-07-31
Applicant: Precision Combustion, Inc.
Inventor： Julian David Prada Bernal , Francesco Macri
Abstract: A gas-fired burner adapted for use on a liquid fuel. A method for essentially smokeless start-up and steady state operation of 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 to be operated on a liquid fuel, thereby offering advantages in logistics and camp operations.
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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：US20230006227A1
公开(公告)日：2023-01-05
申请号：US17940096
申请日：2022-09-08
Applicant: PRECISION COMBUSTION, INC.
Inventor： Subir Roychoudhury , Timothy LaBreche , Saurabh Vilekar , Francesco Macri
IPC: H01M8/0612 , B01J23/74 , H01M8/2475 , H01M8/04007 , H01M8/04014 , H01M8/1246 , B01J19/00
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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Patent Agency Ranking
公开(公告)号：US10738996B1
公开(公告)日：2020-08-11
申请号：US15988000
申请日：2018-05-24
Applicant: Precision Combustion, Inc.
Inventor： Subir Roychoudhury , Richard Mastanduno , Bruce Crowder , David Lang Spence , Francesco Macri , Julian David Prada Bernal
Abstract: A gas-fired burner adapted for use on a liquid fuel. A method for essentially smokeless start-up and steady state operation of 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 to be operated on a liquid fuel, thereby offering advantages in logistics and camp operations.
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公开(公告)号：US11682781B2
公开(公告)日：2023-06-20
申请号：US17940096
申请日：2022-09-08
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
CPC classification number: H01M8/0618 , B01J19/00 , B01J23/74 , H01M8/04014 , H01M8/04037 , H01M8/1246 , H01M8/2475 , H01M2008/1293
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：US20230124247A1
公开(公告)日：2023-04-20
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：US11558004B1
公开(公告)日：2023-01-17
申请号：US16798630
申请日：2020-02-24
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：US11415315B1
公开(公告)日：2022-08-16
申请号：US16798565
申请日：2020-02-24
Applicant: PRECISION COMBUSTION, INC.
Inventor： Subir Roychoudhury , Richard Mastanduno , Bruce Crowder , Francesco Macri
Abstract: A two-stage combustor having as constituent parts: a partial oxidation reactor, which catalytically converts a hydrocarbon fuel and a first supply of oxidant into a gaseous partial oxidation product; and a deep oxidation reactor having a premixer plenum fluidly connected to a porous heat spreader, which converts the gaseous partial oxidation product to deep oxidation products. In one embodiment, the premixer plenum provides an empty space wherein combustion occurs in flame mode. In a second embodiment, the premixer plenum contains a high pore density foam matrix, absent catalyst, which facilitates holding a flameless combustion downstream within the porous heat spreader. In both embodiments heat produced during combustion is transmitted from the heat spreader to an associated heat acceptor, such as a heater head of a Stirling engine.
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