Patents by Inventor Ralph Schellen
Ralph Schellen 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: 20180361349Abstract: The invention relates to a method particularly for reacting phosgene with compounds that contain hydroxyl, thiol, amino and/or formamide groups, comprising the steps of: (I) providing a reactor which has a first reaction chamber (300, 310, 320, 330, 340, 350) and a second reaction chamber (200, 210, 220, 230, 240, 250, 260), the first and the second reaction chambers being separated from one another by means of a porous carbon membrane (100, 110, 120, 130, 140, 150); (II) providing carbon monoxide and chlorine in the first reaction chamber; and simultaneously (III) providing a compound containing hydroxyl, thiol, amino and/or formamide groups in the second reaction chamber. The porous carbon membrane is configured to catalyse the reaction of carbon monoxide and chlorine to obtain phosgene, and to allow this formed phosgene to pass into the second reaction chamber. The invention also relates to a reactor that is suitable for carrying out the claimed method.Type: ApplicationFiled: August 28, 2018Publication date: December 20, 2018Inventors: Leslaw MLECZKO, Aurel WOLF, Ralph SCHELLEN, Konstantinos METAXAS, Jens Stefan ROGGAN
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Patent number: 8758647Abstract: Process for the endothermic, catalytic gas phase oxidation of hydrocarbons with steam and carbon dioxide to hydrogen and carbon monoxide (synthesis gas), performed in 5 to 30 series-connected reaction zones under adiabatic conditions.Type: GrantFiled: December 4, 2009Date of Patent: June 24, 2014Assignee: Bayer Intellectual Property GmbHInventors: Ralph Schellen, Evin Hizaler Hoffmann, Leslaw Mleczko, Stephan Schubert, Rushikesh Apte
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Patent number: 8697914Abstract: Process for preparing bis(para-amino-cyclohexyl)methane by multiphase reaction of methylenedianiline with hydrogen, in which the reaction is performed in 5 to 50 series-connected reaction zones under adiabatic conditions.Type: GrantFiled: December 4, 2009Date of Patent: April 15, 2014Assignee: Bayer Intellectual Property GmbHInventors: Evin Hizaler Hoffmann, Leslaw Mleczko, Ralph Schellen, Stephan Schubert
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Patent number: 8557880Abstract: The present invention relates to a multistage adiabatic process for performing the Fischer-Tropsch synthesis at low temperatures, in which the synthesis is performed in 5 to 40 series-connected reaction zones under adiabatic conditions.Type: GrantFiled: December 4, 2009Date of Patent: October 15, 2013Assignee: Bayer Intellectual Property GmbHInventors: Ralph Schellen, Leslaw Mleczko, Evin Hizaler Hoffmann, Stephan Schubert, Rushikesh Apte
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Publication number: 20120136076Abstract: The present invention relates to a multistage adiabatic process for performing the Fischer-Tropsch synthesis at low temperatures, in which the synthesis is performed in 5 to 40 series-connected reaction zones under adiabatic conditions.Type: ApplicationFiled: December 4, 2009Publication date: May 31, 2012Applicant: BAYER TECHNOLOGY SERVICES GMBHInventors: Ralph Schellen, Leslaw Mleczko, Evin Hizaler Hoffmann, Stephan Schubert, Rushikesh Apte
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Publication number: 20110303581Abstract: The present invention relates to a process for the endothermic, catalytic gas phase reaction of naphtha with hydrogen to form benzene, in which the reaction is carried out in 5 to 12 serial reaction zones under adiabatic conditions.Type: ApplicationFiled: December 4, 2009Publication date: December 15, 2011Applicant: BAYER TECHNOLOGY SERVICES GMBHInventors: Ralph Schellen, Evin Hizaler Hoffmann, Leslaw Mleczko, Stephan Schubert, Bharat Marwaha
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Publication number: 20110251431Abstract: Process for preparing bis(para-amino-cyclohexyl)methane by multiphase reaction of methylenedianiline with hydrogen, in which the reaction is performed in 5 to 50 series-connected reaction zones under adiabatic conditions.Type: ApplicationFiled: December 4, 2009Publication date: October 13, 2011Applicant: Bayer Technology Services GMBHInventors: Evin Hizaler Hoffmann, Leslaw Mleczko, Ralph Schellen, Stephan Schubert
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Publication number: 20110240926Abstract: Process for preparing hydrogen and carbon monoxide (synthesis gas) by endothermic, catalytic gas phase oxidation of hydrocarbons with steam and carbon dioxide, and for simultaneous preparation of ethylene by exothermic, heterogeneously catalyzed, oxidative coupling of methane, wherein the particular reactions are performed in at least three series-connected reaction zones under adiabatic conditions, and wherein the heat of reaction of the exothermic, heterogeneously catalyzed, oxidative coupling of methane is supplied to the endothermic, catalytic gas phase oxidation of hydrocarbons with steam and carbon dioxide.Type: ApplicationFiled: December 5, 2009Publication date: October 6, 2011Applicant: BAYER TECHNOLOGY SERVICES GMBHInventors: Ralph Schellen, Leslaw Mleczko, Evin Hizaler Hoffmann, Stephan Schubert
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Publication number: 20110240925Abstract: Process for the endothermic, catalytic gas phase oxidation of hydrocarbons with steam and carbon dioxide to hydrogen and carbon monoxide (synthesis gas), performed in 5 to 30 series-connected reaction zones under adiabatic conditions.Type: ApplicationFiled: December 4, 2009Publication date: October 6, 2011Applicant: Bayer Technology Services GMBHInventors: Ralph Schellen, Evin Hizaler Hoffmann, Leslaw Mleczko, Stephan Schubert, Rushikesh Apte
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Publication number: 20110130573Abstract: Method for the production of phthalic acid anhydride by catalytic gas phase oxidation of o-xylol with oxygen, in which the reaction is carried out in 5 to 60 serially arranged reaction zones under adiabatic conditions, and reactor system for carrying out the method.Type: ApplicationFiled: May 26, 2009Publication date: June 2, 2011Applicant: Bayer Technology Services GMBHInventors: Evin Hizaler Hoffmann, Leslaw Mleczko, Ralph Schellen, Stephan Schubert, André Hoffmann
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Publication number: 20110060149Abstract: Process for preparing ethylene oxide by catalytic gas phase oxidation of ethylene with oxygen, in which the reaction is performed in 5 to 50 reaction zones connected in series under adiabatic conditions, and reactor system for carrying out the process.Type: ApplicationFiled: May 16, 2009Publication date: March 10, 2011Applicant: Bayer Technology Services GMBHInventors: Evin Hizaler Hoffmann, Leslaw Mleczko, Ralph Schellen, Stephan Schubert
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Publication number: 20100310436Abstract: A chemical reactor 1 for the reaction of fluid reaction mixtures is disclosed. The reactor includes at least one adiabatic reaction zone 2 with a catalyst bed 3 and at least one heat exchanger 4 downstream of the reaction zone 2. The heat exchanger 4 includes plates 5, 6 which are layered on top of one another and joined to one another. The individual plates 5, 6 have at least two separate fluid flow channels 7, 8 arranged in a predetermined pattern. The plates have fluid flow channels 7, 8 which are arranged so that the reaction mixture flows through the heat exchanger 4 in a first flow path direction and the heat-transfer medium used in the heat exchanger 4 flows through the heat exchanger 4 in a second flow path direction. The plates 5, 6 in the heat exchanger 4 are joined to one another by hard soldering.Type: ApplicationFiled: September 6, 2008Publication date: December 9, 2010Applicant: BAYER TECHNOLOGY SERVICES GMBHInventors: Ralph Schellen, Evin Hizaler Hoffmann, Leslaw Mleczko, Stephan Schubert
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Publication number: 20100260660Abstract: The present invention relates to a process for preparing chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, in which the reaction is carried out over 18 to 60 catalyst beds connected in series under adiabatic conditions, and to a reactor system for performing the process.Type: ApplicationFiled: June 26, 2008Publication date: October 14, 2010Applicant: BAYER TECHNOLOGY SERVICES GMBHInventors: Ralph Schellen, Leslaw Mleczko, Stephan Schubert, Oliver Felix Karl Schlüter, Aurel Wolf
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Publication number: 20100189633Abstract: The present invention relates to a process for preparing chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, by reacting the process gas mixture in a reactor in at least two separate reaction zones under adiabatic conditions over catalyst beds, and by passing the process gas mixture leaving at least one reaction zone subsequently through a heat exchanger connected downstream of the particular reaction zone. It further relates to a reactor system for preparing chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen by means of the process according to the invention.Type: ApplicationFiled: July 1, 2008Publication date: July 29, 2010Applicant: BAYER TECHNOLOGY SERVICES GMBHInventors: Ralph Schellen, Leslaw Mleczko, Stephan Schubert, Oliver Felix Karl Schlüter, Aurel Wolf
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Publication number: 20090093655Abstract: The present invention relates to a process and an apparatus for preparing aromatic amines by means of a heterogeneously catalysed hydrogenation, wherein the catalyst required for the reaction is applied to the interior wall of one or more reaction channels which are cooled from the outside.Type: ApplicationFiled: March 1, 2007Publication date: April 9, 2009Applicant: BAYER TECHNOLOGY SERVICES GMBHInventors: Stephan Schubert, Ralph Schellen, Leslaw Mleczko, Stephan Laue, Peter Lehner
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Publication number: 20090028780Abstract: The present invention relates to a process and an apparatus for preparing chlorine by gas-phase oxidation of hydrogen chloride by means of an oxygen-containing gas stream, wherein the catalyst required for the reaction is applied to the interior wall of one or more externally cooled reaction channels.Type: ApplicationFiled: March 2, 2007Publication date: January 29, 2009Applicant: BAYER TECHNOLOGY SERVICES GMBHInventors: Stephan Schubert, Ralph Schellen, Leslaw Mleczko
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Patent number: 6378753Abstract: The invention relates to a gas distribution system which can be connected to a gas supply, the purpose of said gas distribution system being to admit and distribute a non-oxidizing gas in a shroud (17, 20, 21, 23) covering at least one solder container (22). Printed circuit modules (12) are transported through said shroud and while they are being transported, are brought into contact with a wave of solder (24). The gas distribution system has at least one gas distributor situated above and at least one gas distributor (19, 31) situated below the printed circuit modules (12) in order to produce a protective gas atmosphere with low residual oxygen values. Both gas distributors are provided with flow elements (48, 49, 51 to 56, 59; 35, 37, 44, 45). Said flow elements produce a displacement gas blanket which is distributed homogeneously over the discharge surfaces (59, 44, 45) directed towards the solder container.Type: GrantFiled: June 19, 2000Date of Patent: April 30, 2002Assignee: Messer Griesheim GmbHInventors: Ralph Schellen, Jens Tauchmann