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.

公开(公告)号：US20220267233A1

公开(公告)日：2022-08-25

申请号：US17741306

申请日：2022-05-10

Applicant: PRECISION COMBUSTION, INC.

Inventor： Jeffrey Weissman

IPC: C07C2/84 ,  C07C5/333 ,  B01J12/00 ,  B01J19/24

Abstract: A process and apparatus for converting an alkane to an olefin. In one embodiment, the process involves oxidative coupling of an alkane, e.g., methane, with an oxidant, such as air, to produce an olefin having twice the number of carbon atoms as the alkane, e.g., ethylene. In another embodiment, the process involves oxidative dehydrogenation of an alkane, e.g., ethane, with an oxidant to form an olefin having the same number of carbon atoms as the alkane, e.g., ethylene. The process involves passing a flow of the oxidant from a first flow passage through a porous medium; diffusing a flow of the alkane from a second flow passage into the porous medium; and contacting the reactant alkane and the oxidant in the presence of a catalyst within the porous medium to produce the olefin.

公开(公告)号：US20220266213A1

公开(公告)日：2022-08-25

申请号：US17717907

申请日：2022-04-11

Applicant: Precision Combustion, Inc.

Inventor： Jeffrey G. Weissman

IPC: B01J19/00 ,  B01J20/34 ,  B01J20/28

Abstract: A solar reactor useful in reaction processes, more particularly, useful in endothermic reaction processes, such as a catalyzed process or an adsorption-desorption process. The reactor comprises a reaction pathway defined by an exterior wall and an interior wall, the exterior wall comprising a solar radiation receiver capable of converting solar radiation into heat and transmitting the heat to the reaction pathway. The reaction pathway has disposed therein, in alternating fashion, a plurality of reactive elements comprised of a catalyst or a sorbent and a plurality of heat transfer elements.

公开(公告)号：US11325070B1

公开(公告)日：2022-05-10

申请号：US17097016

申请日：2020-11-13

Applicant: PRECISION COMBUSTION INC.

Inventor： Warren F Smith ,  Jeffrey G Weissman ,  Prayush Singh

IPC: C01B32/40 ,  B01J35/04 ,  B01J35/02 ,  B01D53/86

Abstract: A catalytic reactor constructed of a thermally conductive housing defining a reaction zone having disposed therein: (a) a plurality of catalytic elements, each comprising a porous material having a catalyst supported thereon, and (b) a plurality of heat transfer elements, each comprising a porous, thermally conductive, and essentially catalytically inactive material; wherein the plurality of catalytic elements and the plurality of heat transfer elements are disposed in an alternating configuration within the reaction zone. The catalytic reactor is useful in chemical reactions where heat transfer is a rate limiting step.

公开(公告)号：US20220134315A1

公开(公告)日：2022-05-05

申请号：US17577155

申请日：2022-01-17

Applicant: Precision Combustion, Inc.

Inventor： Codruta Maria Zoican-Loebick ,  Jeffrey Weissman

IPC: B01J23/46 ,  B01J35/00 ,  C01B3/40 ,  B01J37/02 ,  B01J35/04 ,  B01J21/04 ,  B01J37/08

Abstract: A bimetallic catalyst composition containing a mesh substrate having supported thereon an alumina washcoat on which are impregnated bimetallic particles of rhodium and ruthenium in specified amounts. A process for the catalytic partial oxidation of a hydrocarbon, such as methane or natural gas, involving contacting the hydrocarbon with an oxidant in the presence of the aforementioned bimetallic catalyst under reaction conditions sufficient to produce synthesis gas, that is, to a mixture of hydrogen and carbon monoxide.

公开(公告)号：US11040928B1

公开(公告)日：2021-06-22

申请号：US16273234

申请日：2019-02-12

Applicant: PRECISION COMBUSTION, INC.

Inventor： Jeffrey Weissman

IPC: C07C2/84 ,  C07C5/333 ,  B01J12/00 ,  B01J19/24 ,  C07C11/04

Abstract: A process and apparatus for converting an alkane to an olefin. In one embodiment, the process involves oxidative coupling of an alkane, e.g., methane, with an oxidant, such as air, to produce an olefin having twice the number of carbon atoms as the alkane, e.g., ethylene. In another embodiment, the process involves oxidative dehydrogenation of an alkane, e.g., ethane, with an oxidant to form an olefin having the same number of carbon atoms as the alkane, e.g., ethylene. The process involves passing a flow of the oxidant from a first flow passage through a porous medium; diffusing a flow of the alkane from a second flow passage into the porous medium; and contacting the reactant alkane and the oxidant in the presence of a catalyst within the porous medium to produce the olefin.

公开(公告)号：US11015128B1

公开(公告)日：2021-05-25

申请号：US16849027

申请日：2020-04-15

Applicant: PRECISION COMBUSTION, INC.

Inventor： Codruta Maria Zoican-Loebick ,  Benjamin Baird ,  Jeffrey Weissman

IPC: C10G25/00 ,  C10L1/08 ,  B01J20/20 ,  B01J20/28 ,  B01J20/08 ,  B01D15/08

Abstract: A process of removing at least one metal contaminant, such as copper, from a fluid hydrocarbon, for example, crude oil or a liquid hydrocarbon fuel, such as an aviation fuel. The process involves contacting the metal-contaminated fluid hydrocarbon with a sorbent selected from graphene oxide or a functionalized graphene oxide. The process removes greater than 99 percent of the metal contaminant without reducing concentrations of advantageous additives, such as, antioxidants, icing inhibitors and corrosion inhibitors. Also disclosed are a purified fluid hydrocarbon composition and a metal contaminant filter system.

公开(公告)号：US10994241B1

公开(公告)日：2021-05-04

申请号：US16008115

申请日：2018-06-14

Applicant: Precision Combustion, Inc.

Inventor： Christian Junaedi ,  Codruta Maria Zoican-Loebick ,  Kyle Hawley

IPC: B01D53/04 ,  B01J20/20 ,  B01D53/047 ,  B01J20/04 ,  B01J20/06 ,  B01J20/02 ,  B01J20/28 ,  B01J20/32 ,  B01J20/34

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.

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

IPC: F23N1/02 ,  F23K5/00 ,  F23N3/08 ,  F23K5/10 ,  C01B3/38

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.

公开(公告)号：US10697915B1

公开(公告)日：2020-06-30

申请号：US15606077

申请日：2017-05-26

Applicant: PRECISION COMBUSTION, INC.

Inventor： Christian Junaedi ,  Subir Roychoudhury

IPC: G01N25/28 ,  G01N33/22

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.