Patents by Inventor Laurent Prost
Laurent Prost has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11780730Abstract: A reformer tube for producing synthesis gas by steam reforming of hydrocarbon-containing input gases is proposed where an outer shell tube is divided by means of a separating tray into the reaction chamber and an exit chamber, a dumped bed of a steam-reforming-active, solid catalyst is arranged in the reaction chamber, at least one heat exchanger tube is arranged inside the reaction chamber and inside the dumped catalyst bed whose entry end is in fluid connection with the catalyst bed and whose exit end is in fluid connection with the exit chamber, wherein gas-contacted parts of the reformer tube, in particular the at least one heat exchanger tube, are fabricated from a nickel-based alloy and coated on their inside with an aluminum diffusion layer.Type: GrantFiled: November 21, 2017Date of Patent: October 10, 2023Assignee: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Dieter Ulber, Sebastien Doublet, Pascal Del-Gallo, Laurent Prost
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Patent number: 11583821Abstract: A device for measuring the internal temperature of a reforming tube including a first structure having an axial part of tubular shape positioned in the lengthwise direction of a reforming tube and a radial part projecting radially towards the central axis of the reforming tube, a second structure of oblong shape having at least one thermocouple made of welded Nicrosil/Nisil conductors arranged longitudinally against the axial part and radially against the radial part, and an outer sheath enveloping the first structure and the second structure.Type: GrantFiled: December 3, 2018Date of Patent: February 21, 2023Assignee: L'Air Liquide, Sociâté Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Sébastien Cadalen, Daniel Gary, Laurent Prost
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Publication number: 20220274080Abstract: The present invention relates to a method to prevent the fluidization of a catalytic fixed bed present in a tubular reactor operated in upward-flow configuration by estimating a pressure drop margin remaining before fluidization of the catalytic bed and adjusting the reactant gas flow in response. It relates also to a method to operate safely a furnace suitable for performing endothermic reactions containing a plurality of catalytic fixed bed reactors operated in upward-flow configuration, and to a method to debottleneck safely a catalytic fixed bed reactor involving a gas flowing in up flow direction.Type: ApplicationFiled: July 30, 2020Publication date: September 1, 2022Inventors: Marie BASIN, Daniel GARY, Laurent PROST, Dieter ULBER
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Patent number: 11351517Abstract: A reformer tube for producing synthesis gas by steam reforming of hydrocarbon-containing feed gases, in which a structured stream reforming catalyst is used, is proposed. According to the invention, a heat exchanger tube is arranged in the interior of the structured catalyst, with the feed gas stream flowing firstly through the structured catalyst and subsequently in countercurrent through the heat exchanger tube. This improves the heat exchange between the synthesis gas product stream and the structured catalyst and the feed gas stream flowing through it, especially in the radial direction.Type: GrantFiled: September 5, 2017Date of Patent: June 7, 2022Assignee: L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Dieter Ulber, Daniel Gary, Laurent Prost, Jean-Philippe Tadiello, Marie Basin
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Publication number: 20210077971Abstract: A device for measuring the internal temperature of a reforming tube including a first structure having an axial part of tubular shape positioned in the lengthwise direction of a reforming tube and a radial part projecting radially towards the central axis of the reforming tube, a second structure of oblong shape having at least one thermocouple made of welded Nicrosil/Nisil conductors arranged longitudinally against the axial part and radially against the radial part, and an outer sheath enveloping the first structure and the second structure.Type: ApplicationFiled: December 3, 2018Publication date: March 18, 2021Inventors: Sébastien CADALEN, Daniel GARY, Laurent PROST
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Patent number: 10888834Abstract: The invention relates to an exchanger-reactor comprising at least three stages with at least one stage comprising both: millimetric channels at least partially covered with a catalyst for stimulating a steam reforming reaction, and millimetric channels at least partially covered with a catalyst for stimulating a water gas reaction.Type: GrantFiled: August 19, 2016Date of Patent: January 12, 2021Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Matthieu Flin, Marie Basin, Olivier Dubet, Daniel Gary, Laurent Prost, Solène Valentin, Marc Wagner
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Publication number: 20190337801Abstract: A reformer tube for producing synthesis gas by steam reforming of hydrocarbon-containing input gases is proposed where an outer shell tube is divided by means of a separating tray into the reaction chamber and an exit chamber, a dumped bed of a steam-reforming-active, solid catalyst is arranged in the reaction chamber, at least one heat exchanger tube is arranged inside the reaction chamber and inside the dumped catalyst bed whose entry end is in fluid connection with the catalyst bed and whose exit end is in fluid connection with the exit chamber, wherein gas-contacted parts of the reformer tube, in particular the at least one heat exchanger tube, are fabricated from a nickel-based alloy and coated on their inside with an aluminum diffusion layer.Type: ApplicationFiled: November 21, 2017Publication date: November 7, 2019Applicant: L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Precedes Georges ClaudeInventors: Dieter ULBER, Sebastien DOUBLET, Pascal DEL-GALLO, Laurent PROST
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Publication number: 20190275494Abstract: A reformer tube for producing synthesis gas by steam reforming of hydrocarbon-containing feed gases, in which a structured stream reforming catalyst is used, is proposed. According to the invention, a heat exchanger tube is arranged in the interior of the structured catalyst, with the feed gas stream flowing firstly through the structured catalyst and subsequently in countercurrent through the heat exchanger tube. This improves the heat exchange between the synthesis gas product stream and the structured catalyst and the feed gas stream flowing through it, especially in the radial direction.Type: ApplicationFiled: September 5, 2017Publication date: September 12, 2019Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Dieter ULBER, Daniel GARY, Laurent PROST, Jean-Philippe TADIELLO, Marie BASIN
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Patent number: 10053780Abstract: Process for depositing a corrosion-protection coating on at least one portion of the surfaces of a metallic substrate having at least one cavity with an equivalent diameter emm<2 mm and a length/width ratio of greater than 150, using an aqueous suspension comprising powder of the metal to be deposited on the substrate combined with an agent for protecting the surface of the metal powder, a diluent, and at least one additive, the particles of the suspension each having an equivalent diameter d such that d?emm/10.Type: GrantFiled: September 17, 2014Date of Patent: August 21, 2018Assignees: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, Centre National de la Recherche Scientifique, Université de Lorraine, Université de LimogesInventors: Thierry Chartier, Pascal Del-Gallo, Sebastien Doublet, Thierry Mazet, Laurent Prost, Nicolas Ramenatte, Fabrice Rossignol, Michel Vilasi
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Publication number: 20180193818Abstract: The invention relates to an exchanger-reactor comprising at least three stages with at least one stage comprising both: millimetric channels at least partially covered with a catalyst for stimulating a steam reforming reaction, and millimetric channels at least partially covered with a catalyst for stimulating a water gas reaction.Type: ApplicationFiled: August 19, 2016Publication date: July 12, 2018Inventors: Matthieu FLIN, Marie BASIN, Olivier DUBET, Daniel GARY, Laurent PROST, Solène VALENTIN, Marc WAGNER
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Publication number: 20180170750Abstract: Reactor-exchanger comprising at least 3 stages with, on each stage, at least one area promoting the heat exchanges and at least one distribution area upstream and/or downstream of the area promoting the heat exchanges, characterized in that the area promoting the heat exchanges comprises cylindrical millimetric channels, there being 1 to 1000 of said channels with a length of between 10 mm and 500 mm.Type: ApplicationFiled: February 3, 2016Publication date: June 21, 2018Inventors: Pascal DEL-GALLO, Olivier DUBET, Matthieu FLIN, Laurent PROST, Marc WAGNER
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Patent number: 9915484Abstract: Process for producing an element comprising a multilayer architecture, the layers of which comprise primary channels on their upper faces, said process comprising the following successive steps: (a) producing secondary channels on the lower faces of each layer, each secondary channel being intended to be facing a primary channel of the neighboring lower layer within the architecture, (b) depositing a coating that protects against oxidation at a temperature of between 500° C. and 1000° C. and against corrosion over all of the lower and upper surfaces of the layers, (c) sanding or mechanical cleaning of the surfaces intended to be assembled, and (d) assembling via superposition of the various layers so that each secondary channel of a lower face of an upper layer is facing and is centered on a primary channel of the neighboring lower layer, the width of each secondary channel being greater than the width of the primary channel which it is facing within the architecture.Type: GrantFiled: March 17, 2014Date of Patent: March 13, 2018Assignees: L'AIR LIQUIDE SOCIÉTÉ ANONYME POUR L'ÉTUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE LORRAINEInventors: Damien Sallais, Laurent Prost, Pascal Del-Gallo, Marc Wagner, Michel Vilasi, Thierry Mazet, Stephane Mathieu
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Publication number: 20160317990Abstract: The invention relates to a compact catalytic reactor comprising at least three plates with at least one area of millimetric channels on each plate, promoting heat exchange, and at least one distribution area upstream and/or downstream of the area of millimetric channels, the channels being separated by walls. The distribution areas are characterized by: the discontinuity of the walls along the distribution area on the side of the inflow of gaseous flows or on the side of the outflow thereof; and the increase in the width of the walls along the distribution area on the side of the inflow of gaseous flows or on the side of the outflow thereof.Type: ApplicationFiled: December 4, 2014Publication date: November 3, 2016Applicants: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, Centre National De La Recherche Scientifique, Universite De Lorraiine, Fives CryoInventors: Solene VALENTIN, Laurent PROST, Olivier DUBET, Matthieu FLIN, Jean-Marc COMMENGE, Guislain GENIN, Laurent FALK, Johan DIB, Thierry MAZET
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Publication number: 20160237574Abstract: Process for depositing a corrosion-protection coating on at least one portion of the surfaces of a metallic substrate having at least one cavity with an equivalent diameter emm<2 mm and a length/width ratio of greater than 150, using an aqueous suspension comprising powder of the metal to be deposited on the substrate combined with an agent for protecting the surface of the metal powder, a diluent, and at least one additive, the particles of the suspension each having an equivalent diameter d such that d?emm/10.Type: ApplicationFiled: September 17, 2014Publication date: August 18, 2016Applicants: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, Centre National de la Recherche Scientifique, Universite de Limoges, Universite de LorraineInventors: Thierry CHARTIER, Pascal DEL-GALLO, Sebastien DOUBLET, Thierry MAZET, Laurent PROST, Nicolas RAMENATTE, Fabrice ROSSIGNOL, Michel VILASI
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Publication number: 20160061539Abstract: Process for producing an element comprising a multilayer architecture, the layers of which comprise primary channels on their upper faces, said process comprising the following successive steps: (a) producing secondary channels on the lower faces of each layer, each secondary channel being intended to be facing a primary channel of the neighboring lower layer within the architecture, (b) depositing a coating that protects against oxidation at a temperature of between 500° C. and 1000° C. and against corrosion over all of the lower and upper surfaces of the layers, (c) sanding or mechanical cleaning of the surfaces intended to be assembled, and (d) assembling via superposition of the various layers so that each secondary channel of a lower face of an upper layer is facing and is centered on a primary channel of the neighboring lower layer, the width of each secondary channel being greater than the width of the primary channel which it is facing within the architecture.Type: ApplicationFiled: March 17, 2014Publication date: March 3, 2016Applicants: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE LORRAINEInventors: Damien SALLAIS, Laurent PROST, Pascal DEL-GALLO, Marc WAGNER, Michei VILASI, Thierry MAZET, Stephane MATHIEU
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Patent number: 5338367Abstract: Pickling process in an acid bath containing an oxidant in order to enhance the pickling kinetics, wherein at least one peroxygenated derivative of titanium or at least of one element of the titanium family included in the product to be pickled is formed, the metal being ionized to a higher valency, the formation of the peroxygenated compound is controlled by measurement of the redox potential, and the quantity of oxidizing agent is limited so as to maintain an oxido-reduction potential lower than the passivation potential of the metallic product.Type: GrantFiled: November 18, 1992Date of Patent: August 16, 1994Assignee: Ugine, Aciers de Chatillon et GueugnonInventors: Dominique Henriet, Didier Paul, Laurent Prost