Patents by Inventor Rachid Mabrouk
Rachid Mabrouk 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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Publication number: 20190143261Abstract: A method for reducing the loss of solvent during carbon dioxide capture from flue gas in an amine based solvent process by the steps of feeding a flue gas containing carbon dioxide to an absorber column containing an amine solvent; absorbing carbon dioxide in the amine solvent forming a rich solvent; feeding the rich solvent to at least one inter-stage cooler; recovering the rich solvent and feeding the rich solvent to a regeneration column; separating the carbon dioxide from the rich solvent and recovering the carbon dioxide to form a lean solvent; feeding the lean solvent to the absorber column. The improvement is realized by one of feeding steam to the flue gas; feeding steam to the absorber column after introduction of amine solvent; feeding the flue gas stream to a demister before feeding to the absorber column or increasing the lean solvent inlet temperature into the absorber column.Type: ApplicationFiled: January 15, 2019Publication date: May 16, 2019Inventors: Rachid Mabrouk, Stevan Jovanovic, Joseph Naumovitz, Ramachandran Krishnamurthy
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Publication number: 20180148330Abstract: A method for producing hydrogen in a steam methane reformer is disclosed. The method provides for the steps of feeding a mixture of fuel and air to a steam methane reformer; feeding a mixture of steam and hydrocarbons to the steam methane reformer; contacting the steam and hydrocarbons with a metal monolith supported catalyst; providing an electric current to the metal monolith supported catalyst; and recovering the hydrogen. The electric current applied to the metal monolith supported catalyst will encounter electrical resistance which will create heat. This heat can supplement that provided for by the reaction of the fuel and air allowing for a reduction in fueling costs as well as treatment costs of the resultant flue gas.Type: ApplicationFiled: November 30, 2016Publication date: May 31, 2018Inventors: Satish S. Tamhankar, Raju Natarajan, Ramachandran Krishnamurthy, Rachid Mabrouk
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Publication number: 20180104642Abstract: A method for reducing the loss of solvent during carbon dioxide capture from flue gas in an amine based solvent process by the steps of feeding a flue gas containing carbon dioxide to an absorber column containing an amine solvent; absorbing carbon dioxide in the amine solvent forming a rich solvent; feeding the rich solvent to at least one inter-stage cooler; recovering the rich solvent and feeding the rich solvent to a regeneration column; separating the carbon dioxide from the rich solvent and recovering the carbon dioxide to form a lean solvent; feeding the lean solvent to the absorber column. The improvement is realized by one of feeding steam to the flue gas; feeding steam to the absorber column after introduction of amine solvent; feeding the flue gas stream to a demister before feeding to the absorber column or increasing the lean solvent inlet temperature into the absorber column.Type: ApplicationFiled: October 19, 2016Publication date: April 19, 2018Inventors: Rachid Mabrouk, Stevan Jovanovic, Joseph Naumovitz, Ramachandran Krishnamurthy
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Patent number: 9908091Abstract: A furnace for steam reforming a feed stream containing hydrocarbon, preferably methane, having: a combustion chamber, a plurality of reactor tubes arranged in the combustion chamber for accommodating a catalyst and for passing the feed stream through the reactor tubes, and at least one burner which is configured to burn a combustion fuel in the combustion chamber to heat the reactor tubes. In addition at least one voltage source is provided which is connected to the plurality of reactor tubes in such a manner that in each case an electric current which heats the reactor tubes to heat the feedstock is generable in the reactor tubes.Type: GrantFiled: March 3, 2016Date of Patent: March 6, 2018Assignee: Linde AktiengesellschaftInventors: Wolfgang Vogel, Rachid Mabrouk, Christoph Stiller, Stefan Hübner, Harald Ranke, Andreas Seliger
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Publication number: 20170368495Abstract: A method for separating carbon dioxide from a flue gas stream wherein the flue gas stream is fed to an absorber column thereby producing a carbon dioxide depleted flue gas stream and wherein carbon dioxide absorbed from the carbon dioxide rich flue gas stream in the solvent is fed from the absorber column to a stripper column as a carbon dioxide rich solvent blend. The method is an improvement over prior carbon dioxide separation process by feeding the flue gas stream to a gas pre-treatment device prior to feeding into the absorber column preferably for decreasing the oxygen content in the flue gas and recycling a carbon dioxide product from the stripper column to the absorber column to increase the carbon dioxide content in the flue gas.Type: ApplicationFiled: June 22, 2016Publication date: December 28, 2017Inventors: Rachid Mabrouk, Stevan Jovanovic, Ramachandran Krishnamurthy
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Patent number: 9790433Abstract: A process for producing hydrocarbons is disclosed in which a first feed substream and a second feed substream are obtained from a hydrocarbonaceous feed stream, of which the first feed substream is converted by means of partial oxidation or autothermal reforming to a first synthesis gas stream and the second feed substream is converted by means of steam reforming to a second synthesis gas stream and subsequently combined with the first synthesis gas stream to give a third synthesis gas stream, of which at least a first portion is converted by Fischer-Tropsch synthesis to a crude product stream comprising hydrocarbons of different chain lengths, from which light hydrocarbons are separated in a tail gas, in order to recycle them and use them in the partial oxidation or autothermal reforming. The characteristic feature here is that unsaturated hydrocarbons are separated from at least a portion of the tail gas.Type: GrantFiled: February 27, 2017Date of Patent: October 17, 2017Assignee: Linde AktiengesellschaftInventors: Albrecht Heinzel, Rachid Mabrouk
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Publication number: 20170260457Abstract: A process for producing hydrocarbons is disclosed in which a first feed substream and a second feed substream are obtained from a hydrocarbonaceous feed stream, of which the first feed substream is converted by means of partial oxidation or autothermal reforming to a first synthesis gas stream and the second feed substream is converted by means of steam reforming to a second synthesis gas stream and subsequently combined with the first synthesis gas stream to give a third synthesis gas stream, of which at least a first portion is converted by Fischer-Tropsch synthesis to a crude product stream comprising hydrocarbons of different chain lengths, from which light hydrocarbons are separated in a tail gas, in order to recycle them and use them in the partial oxidation or autothermal reforming. The characteristic feature here is that unsaturated hydrocarbons are separated from at least a portion of the tail gas.Type: ApplicationFiled: February 27, 2017Publication date: September 14, 2017Inventors: Albrecht Heinzel, Rachid Mabrouk
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Publication number: 20170152219Abstract: A method for producing urea. A methane-containing feed gas stream is reacted with oxygen by partial oxidation to form a synthesis gas stream containing hydrogen and carbon monoxide. The carbon monoxide is reacted with water in a water gas-shift reaction to form carbon dioxide and hydrogen. The synthesis gas stream is separated into a first synthesis gas substream a second synthesis gas substream. The first synthesis gas substream is subjected to pressure-swing adsorption to separate hydrogen and the second synthesis gas substream is subjected to temperature-swing adsorption to separate carbon dioxide. The separated is reacted with nitrogen to form ammonia and the ammonia is reacted with the carbon dioxide to form urea.Type: ApplicationFiled: November 17, 2016Publication date: June 1, 2017Inventors: Rachid Mabrouk, Klemens Wawrzinek, Christian Voss, Josef Schwarzhuber, Andreas Seliger, Benedikt Schürer, Gabriel Salazar Duarte
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Publication number: 20170022057Abstract: A process for generating a syngas from a CO2-rich and hydrocarbon-containing feed gas, wherein a CO2-rich and hydrocarbon-containing feed gas is provided and is reacted in a syngas generation step by means of partial oxidation or steam reforming to give an H2- and CO-comprising syngas. At least CO2 is removed from the feed gas in a scrubbing of the feed gas by means of a scrubbing medium, before the feed gas is fed to the syngas generation step.Type: ApplicationFiled: March 2, 2016Publication date: January 26, 2017Inventors: Harald Ranke, Marcus Guzmann, Rachid Mabrouk, Ulrich Heucke
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Patent number: 9475696Abstract: A method for producing synthesis gas and ammonia by forming a synthesis gas mixture; separating solids from the synthesis gas mixture; subjecting the synthesis gas mixture to a shift reaction and separating the reaction products by a pressure swing adsorption unit. The hydrogen and nitrogen separated in the pressure swing adsorption unit are fed to an ammonia reactor to produce ammonia.Type: GrantFiled: February 24, 2014Date of Patent: October 25, 2016Assignee: Linde AktiengesellschaftInventors: Rachid Mabrouk, Ramachandran Krishnamurthy
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Publication number: 20160289071Abstract: A process for producing synthesis gas, by providing a feed gas stream, the feed gas stream including a hydrocarbon, preferably methane, and steam; heating of at least one part of the feed gas stream in a first steam reformer using heat of combustion; and converting of the heated feed gas stream into a synthesis gas stream of CO and H2 in a reforming step. At least one part of the feed gas stream is heated outside the first steam reformer, at least partly using electric energy.Type: ApplicationFiled: March 4, 2016Publication date: October 6, 2016Inventors: Rachid Mabrouk, Wolfgang Vogel, Volkmar Lemme, Andreas Seliger
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Publication number: 20160288074Abstract: A furnace for steam reforming a feed stream containing hydrocarbon, preferably methane, having: a combustion chamber, a plurality of reactor tubes arranged in the combustion chamber for accommodating a catalyst and for passing the feed stream through the reactor tubes, and at least one burner which is configured to burn a combustion fuel in the combustion chamber to heat the reactor tubes. In addition at least one voltage source is provided which is connected to the plurality of reactor tubes in such a manner that in each case an electric current which heats the reactor tubes to heat the feedstock is generable in the reactor tubes.Type: ApplicationFiled: March 3, 2016Publication date: October 6, 2016Inventors: Wolfgang Vogel, Rachid Mabrouk, Christoph Stiller, Stefan Hübner, Harald Ranke, Andreas Seliger
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Publication number: 20150307351Abstract: A pressure swing adsorption (PSA) method provides a tail gas stream that is compressed and reformed by at least one of partial oxidation and steam reforming apparatus to produce a synthesis gas with a hydrogen to carbon monoxide ratio. The synthesis gas produced is usable for downstream synthesis of synthetic fuels and/or oxygenates. An apparatus is also provided.Type: ApplicationFiled: March 4, 2015Publication date: October 29, 2015Inventors: Rachid Mabrouk, Joseph Naumovitz
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Publication number: 20150291437Abstract: A method for producing synthesis gas and ammonia by forming a synthesis gas mixture; separating solids from the synthesis gas mixture; subjecting the synthesis gas mixture to a shift reaction and separating the reaction products by a pressure swing adsorption unit. The hydrogen and nitrogen separated in the pressure swing adsorption unit are fed to an ammonia reactor to produce ammonia.Type: ApplicationFiled: February 24, 2014Publication date: October 15, 2015Inventors: Rachid Mabrouk, Ramachandran Krishnamurthy
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Publication number: 20150260029Abstract: A system for enhanced oil recovery from an oil field that uses the associated gases collected to produce synthetic crude oil from a GTL plant. The pressure in the oil field is maintained by injecting nitrogen obtained from an ASU. The ASU is powered by an associated power plant that uses oxygen produced by the ASU and the Fisher Tropsch tail gases (hydrogen and steam) of the GTL plant. Nitrogen recovered from the tail gas of the power plant boosts the available nitrogen needed for the enhanced oil recovery operation.Type: ApplicationFiled: March 4, 2015Publication date: September 17, 2015Inventors: Rachid Mabrouk, Harald Ranke
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Publication number: 20150259202Abstract: The invention relates to a process for the production of synthesis gas from tail gas including autothermal reforming and shifting a portion of autothermally reformed process gas in order to produce a product stream of synthesis gas richer in carbon monoxide.Type: ApplicationFiled: October 10, 2013Publication date: September 17, 2015Applicant: Haldor Topsøe A/SInventors: Ib Dybkjær, Rachid Mabrouk, Kim Aasberg-Petersen, Christian Niels Schjødt
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Patent number: 8440855Abstract: An integrated process for the production of acetic acid, ethylene and vinyl acetate monomer comprising the steps of: (a) evaporating at least part of an ethanol feed stock (b) producing in a first reaction zone a first product stream comprising acetic acid by oxidative or partly oxidative dehydrogenation of ethanol feed stock; (c) producing in a second reaction zone a second product stream comprising ethylene from an ethanol feed stock; (d) reacting in a third reaction zone an acetic acid reaction stream containing at least a portion of the acetic acid from the first reaction zone with an ethylene reaction stream containing at least a portion of the ethylene product from the second reaction zone and with oxygen to a third product stream comprising vinyl acetate monomer; (e) passing at least a portion of the third product stream to a distillation section and isolating at least a portion of the vinyl acetate monomer; (f) supplying at least part of reaction heat from the third reaction zone to provide heat forType: GrantFiled: December 8, 2010Date of Patent: May 14, 2013Assignee: Haldor Topsoe A/SInventors: Bodil Voss, Rachid Mabrouk, Claus Hviid Christensen
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Patent number: 8067474Abstract: A process for the preparation of hydrocarbon products comprising the steps of a) providing a synthesis gas comprising hydrogen, carbon monoxide and carbon dioxide; (b) reacting at least part of the synthesis gas to an oxygenate mixture comprising methanol and dimethyl ether in presence of one or more catalysts which together catalyse a reaction of hydrogen and carbon monoxide to oxygenates at a pressure of at least 3 MPa; (c) withdrawing from step (b) a reaction mixture comprising amounts of methanol, dimethyl ether, carbon dioxide and water together with unreacted synthesis gas and cooling the reaction mixture to obtain a liquid phase with the amounts of methanol, dimethyl ether and water and simultaneously dissolving carbon dioxide in the liquid phase; (d) separating the carbon dioxide containing liquid phase from a remaining gaseous phase comprising hydrogen and carbon monoxide; (e) evaporating and reacting the liquid phase being withdrawn from step (d) in presence of a catalyst being active in the conversType: GrantFiled: March 17, 2010Date of Patent: November 29, 2011Assignee: Haldor Topsøe A/SInventors: Poul Erik Højlund Nielsen, Finn Joensen, John Bøgild Hansen, Esben Lauge Sørensen, Jørgen Madsen, Rachid Mabrouk
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Publication number: 20110137074Abstract: An integrated process for the production of acetic acid, ethylene and vinyl acetate monomer comprising the steps of: (a) evaporating at least part of an ethanol feed stock (b) producing in a first reaction zone a first product stream comprising acetic acid by oxidative or partly oxidative dehydrogenation of ethanol feed stock; (c) producing in a second reaction zone a second product stream comprising ethylene from an ethanol feed stock; (d) reacting in a third reaction zone an acetic acid reaction stream containing at least a portion of the acetic acid from the first reaction zone with an ethylene reaction stream containing at least a portion of the ethylene product from the second reaction zone and with oxygen to a third product stream comprising vinyl acetate monomer; (e) passing at least a portion of the third product stream to a distillation section and isolating at least a portion of the vinyl acetate monomer; (f) supplying at least part of reaction heat from the third reaction zone to provide heat forType: ApplicationFiled: December 8, 2010Publication date: June 9, 2011Inventors: Bodil Voss, Rachid Mabrouk, Claus Hviid Christensen
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Publication number: 20100240779Abstract: A process for the preparation of hydrocarbon products comprising the steps of a) providing a synthesis gas comprising hydrogen, carbon monoxide and carbon dioxide; (b) reacting at least part of the synthesis gas to an oxygenate mixture comprising methanol and dimethyl ether in presence of one or more catalysts which together catalyse a reaction of hydrogen and carbon monoxide to oxygenates at a pressure of at least 3 MPa; (c) withdrawing from step (b) a reaction mixture comprising amounts of methanol, dimethyl ether, carbon dioxide and water together with unreacted synthesis gas and cooling the reaction mixture to obtain a liquid phase with the amounts of methanol, dimethyl ether and water and simultaneously dissolving carbon dioxide in the liquid phase; (d) separating the carbon dioxide containing liquid phase from a remaining gaseous phase comprising hydrogen and carbon monoxide; (e) evaporating and reacting the liquid phase being withdrawn from step (d) in presence of a catalyst being active in the conversType: ApplicationFiled: March 17, 2010Publication date: September 23, 2010Inventors: Poul Erik Højlund Nielsen, Finn Joensen, John Bøgild Hansen, Esben Lauge Sørensen, Jørgen Madsen, Rachid Mabrouk