Patents by Inventor Martin Rothaemel
Martin Rothaemel 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: 10202554Abstract: A process and a plant for producing olefins from oxygenates such as methanol and/or dimethyl ether are proposed, in which initially the oxygenates are converted to a primary product containing propylene, other olefins, paraffins and aromatics in an olefin synthesis reactor. The primary product is separated into hydrocarbon fractions of different C chain length, wherein short-chain olefins such as propylene are obtained and beside further fractions there is also obtained a C7? fraction which contains C5/C6 olefins, as well as a C7+ fraction which contains aromatics. From the latter, the aromatics are separated and alkylated with the C5/C6 olefins to obtain alkyl aromatics. The same are hydrogenated completely and recirculated to the olefin synthesis reactor, where they likewise are converted to short-chain olefins.Type: GrantFiled: June 10, 2016Date of Patent: February 12, 2019Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Ingo Bauer, Martin Rothaemel
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Patent number: 9932281Abstract: The present invention relates to a process for the production of olefins from oxygenates, comprising the following steps: (i) heterogeneously catalyzed conversion of methanol to a product stream containing a C3? and a C4+ fraction, (ii) distillation of the product stream for separating the C3? fraction from a bottom product, and (iii) distillation of the bottom product for separating a stream containing the C4+ fraction and dimethyl ether from a stream containing water and methanol. Furthermore, the invention also comprises a plant for carrying out this process.Type: GrantFiled: December 3, 2013Date of Patent: April 3, 2018Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges ClaudeInventor: Martin Rothaemel
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Patent number: 9902659Abstract: A process for producing olefins from oxygenates includes the following steps: (i) heterogeneously catalyzed conversion of at least one oxygenate to a stream containing propylene, aromatics and cyclic olefins, (ii) at least partial hydrogenation of the aromatics and cyclic olefins to naphthenes, and (iii) at least partial recirculation of the naphthenes into the heterogeneously catalyzed conversion.Type: GrantFiled: February 4, 2014Date of Patent: February 27, 2018Assignee: L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDEInventors: Martin Rothaemel, Roberta Olindo, Stephane Haag, Thomas Renner, Frank Castillo-Welter
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Patent number: 9878964Abstract: A process for producing olefins from oxygenates comprises the following steps: (i) heterogeneously catalyzed conversion of at least one oxygenate to an entire stream containing propylene, aromatics and cyclic olefins; (ii) olefin interconversion of at least a part of the entire stream; (iii) separation of a stream rich in aromatics from the reaction product of the olefin interconversion; and (iv) hydrogenation of the stream rich in aromatics.Type: GrantFiled: February 4, 2014Date of Patent: January 30, 2018Assignee: L'AIR LIQUIDE SOCIÉTÉ ANONYME POUR L'ÉTUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDEInventors: Martin Rothaemel, Roberta Olindo, Stephane Haag, Thomas Renner, Frank Castillo-Welter
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Patent number: 9724620Abstract: In producing C2-C4 olefins, in particular propylene, from an educt mixture containing steam and oxygenates, such as methanol and/or dimethyl ether, the educt mixture is reacted in a reactor on a catalyst to a reaction mixture comprising low-molecular olefins and gasoline hydrocarbons, which in a first separating device is separated into a mixture rich in C5? olefins, a mixture rich in C5+ gasoline hydrocarbons, and an aqueous phase. To increase the yield of propylene the mixture rich in C5+ gasoline hydrocarbons is supplied to a second separating device, in which the aromatics contained in the mixture are separated. The residual stream largely free from aromatics is at least partly recirculated to the reactor.Type: GrantFiled: September 19, 2006Date of Patent: August 8, 2017Assignee: Lurgi GmbHInventors: Martin Rothaemel, Henning Buchold, Harald Kömpel, Andreas Glasmacher, Andreas Ochs
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Patent number: 9511361Abstract: A catalyst containing a pentasil-type alumosilicates and a binder, in the form of spheres having an average diameter between 0.3 and 7 mm, wherein the BET surface area of the catalyst ranges from 300 to 600 m2/g. Also disclosed is a method for producing the catalyst, wherein primary crystallites of the aluminosilicate having an average diameter of at least 0.01 ?m and less than 0.1 ?m are mixed with the binder, shaped into spheres having an average diameter between 0.3 and 7 mm, and subsequently calcined. Also disclosed is the use of the catalyst for converting methanol into olefins, in particular propylene. Also disclosed is a method for producing olefins from methanol, in which a feed gas is fed across the catalyst.Type: GrantFiled: November 16, 2010Date of Patent: December 6, 2016Assignees: CLARIANT PRODUKTE (DEUTSCHLAND) GMBH, AIR LIQUIDE GLOBAL E&C SOLUTIONS GERMANY GMBHInventors: Götz Burgfels, Manfred D. Frauenrath, Nadine Fromm, Angelika Glienke, Martin Rothämel, Sven Pohl
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Patent number: 9505684Abstract: A process and a plant for producing an olefin stream from a hydrocarbon mixture feed stream, wherein the olefin stream is depleted as regards its content of oxygen-containing organic compounds (oxygenates) as compared to the feed stream. The hydrocarbon mixture feed stream is charged to a separation column operated by a thermal separation process, for example to a distillation column, wherein a material stream enriched in oxygenates is withdrawn via a side outlet and removed from the process. The process according to the invention is particularly useful for processing the product streams obtained in the olefin synthesis by an OTO process.Type: GrantFiled: April 21, 2011Date of Patent: November 29, 2016Assignee: AIR LIQUIDE GLOBAL E&C SOLUTIONS GERMANY GMBHInventors: Hermann Bach, Thomas Renner, Martin Rothaemel, Michael Wilken
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Patent number: 9359272Abstract: A process and a plant for producing C2-C4 olefins, in particular propylene, from an educt mixture containing steam as well as methanol vapor and/or dimethyl ether vapor.Type: GrantFiled: June 23, 2006Date of Patent: June 7, 2016Assignee: Lurgi GmbHInventors: Martin Rothaemel, Uwe Finck, Thomas Renner, Henning Buchold
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Publication number: 20160145169Abstract: A process for producing olefins from oxygenates includes the following steps: (i) heterogeneously catalyzed conversion of at least one oxygenate to a stream containing propylene, aromatics and cyclic olefins, (ii) at least partial hydrogenation of the aromatics and cyclic olefins to naphthenes, and (iii) at least partial recirculation of the naphthenes into the heterogeneously catalyzed conversion.Type: ApplicationFiled: February 4, 2014Publication date: May 26, 2016Inventors: Martin ROTHAEMEL, Roberta OLINDO, Stephane HAAG, Thomas RENNER, Frank CASTILLO-WELTER
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Publication number: 20150376080Abstract: A process for producing olefins from oxygenates comprises the following steps: (i) heterogeneously catalyzed conversion of at least one oxygenate to an entire stream containing propylene, aromatics and cyclic olefins; (ii) olefin interconversion of at least a part of the entire stream; (iii) separation of a stream rich in aromatics from the reaction product of the olefin interconversion; and (iv) hydrogenation of the stream rich in aromatics.Type: ApplicationFiled: February 4, 2014Publication date: December 31, 2015Inventors: Martin ROTHAEMEL, Roberta OLINDO, Stephane HAAG, Thomas RENNER, Frank CASTILLO-WELTER
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Publication number: 20150353450Abstract: The present invention relates to a process for the production of olefins from oxygenates, comprising the following steps: (i) heterogeneously catalyzed conversion of methanol to a product stream containing a C3? and a C4+ fraction, (ii) distillation of the product stream for separating the C3? fraction from a bottom product, and (iii) distillation of the bottom product for separating a stream containing the C4+ fraction and dimethyl ether from a stream containing water and methanol. Furthermore, the invention also comprises a plant for carrying out this process.Type: ApplicationFiled: December 3, 2013Publication date: December 10, 2015Inventor: Martin ROTHAEMEL
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Patent number: 9085500Abstract: A process for producing a product containing C3H6 and C2H4 includes simultaneous conversion of MeOH and EtOH in an adiabatic sequentially operated reactor containing a plurality of reaction stages. Each of the plurality of reaction stages of the reactor is provided with a fixed bed of a form-selective catalyst. A gaseous feed stream including MeOH, DME and H2O is charged to at least a first of the reaction stages of the reactor with a temperature in a range of 300 to 600° C. at a pressure in a range of 0.1 to 20 bar[a]. EtOH is fed into at least, one of the reaction stages of the reactor.Type: GrantFiled: November 25, 2009Date of Patent: July 21, 2015Assignee: AIR LIQUIDE GLOBAL E&C SOLUTIONS GERMANY GMBHInventors: Henning Buchold, Harald Koempel, Sven Pohl, Martin Rothaemel, Ulrich Wagner
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Patent number: 9028567Abstract: For producing synthetic fuels, an educt mixture containing steam and oxygenates, such as methanol and/or dimethyl ether, is converted to olefins on a catalyst in a first process stage, and this olefin mixture then is divided in a separating means into a stream rich in C1-C4 hydrocarbons and a stream rich in C5+ hydrocarbons. The stream rich in C5+ hydrocarbons is divided into a stream rich in C5 and C6 hydrocarbons and a stream rich in C7+ hydrocarbons, wherein the stream rich in C5 and C6 hydrocarbons is at least partly subjected to an etherification with methanol. The ethers thus obtained are admixed to the gasoline product stream.Type: GrantFiled: July 3, 2010Date of Patent: May 12, 2015Assignee: Lurgi GmbHInventors: Martin Rothaemel, Theis Ohlhaver, Peter Trabold, Andreas Ochs, Harald Koempel
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Patent number: 8884074Abstract: A process produces dimethyl ether (DME) from methanol (MeOH). The process includes charging a feed mixture consisting of raw MeOH and a process-internally obtained return flow substantially consisting of unconverted MeOH and reaction water to an MeOH column. The feed mixture is evaporated in the MeOH column to form a first distillate substantially consisting of vaporous MeOH. The first distillate is supplied to a reactor and the MeOH is converted to DME by splitting off water in the reactor so as to form a reaction mixture. The reaction mixture is withdrawn from the reactor, charged to a mixture column and separated into a bottom product substantially consisting of water and a second distillate substantially consisting of DME and MeOH. The second distillate is separated in a DME column into a third distillate substantially consisting of DME, a bottom product consisting essentially of water-poor MeOH, and uncondensable gases discharged overhead.Type: GrantFiled: November 19, 2009Date of Patent: November 11, 2014Assignee: Air Liquide Global E&C Solutions Germany GmbHInventors: Bernd Ahlers, Gerhard Birke, Harald Koempel, Hermann Bach, Martin Rothaemel, Waldemar Liebner, Walter Boll, Veronika Gronemann
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Patent number: 8785708Abstract: In a process for the preparation of C2- to C4-olefins, a feed stream comprising oxygenates and steam is passed through at least one fixed-bed zone comprising zeolite catalyst, where the oxygenates are converted catalytically into olefins with high selectivity for lower olefins, and the reaction mixture leaving the fixed-bed zone is separated into a first product stream comprising C2- to C3-olefins and inert gas components, at least one second product stream comprising C4+-olefins, and a third product stream consisting of aqueous phase. In order to improve the yield of lower olefins, the aim is to regulate the temperature of the catalytic reaction in accordance with a target temperature value in the range from 440 to 520° C. specified for the reaction mixture exiting the fixed-bed zone by means of a supplementary stream consisting of olefins and inert gas components fed into the feed stream.Type: GrantFiled: February 28, 2006Date of Patent: July 22, 2014Assignee: Lurgi AGInventors: Martin Rothaemel, Walter Boll, Gerhard Birke, Harald Koempel, Waldemar Liebner, Hermann Bach
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Patent number: 8524970Abstract: In a process for producing synthetic fuels from an educt mixture containing hydrogen and oxygenates, such as methanol and/or dimethyl ether, the educt mixture is reacted on a catalyst in a first process stage to obtain a hydrocarbon product containing olefins with preferably 2 to 8 carbon atoms. In a second process stage the hydrocarbon product is oligomerized to long-chain olefins, from which gasoline and Diesel products are obtained. The hydrocarbon product obtained in the first process stage is separated into a liquid phase and a gaseous phase. The gaseous phase is supplied to the second process stage. The liquid phase is separated into a mixture rich in C6? hydrocarbons and a mixture containing C7+ hydrocarbons and aromatics. The mixture rich in C6? hydrocarbons is supplied to the second process stage. The mixture containing C7+ hydrocarbons ?+ and aromatics can be admixed to the gasoline product for quality improvement.Type: GrantFiled: April 29, 2008Date of Patent: September 3, 2013Assignee: Lurgi GmbHInventors: Martin Rothaemel, Uwe Fincke, Holger Dropsch, Henning Buchold
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Publication number: 20130060073Abstract: A process and a plant for producing an olefin stream from a hydrocarbon mixture feed stream, wherein the olefin stream is depleted as regards its content of oxygen-containing organic compounds (oxygenates) as compared to the feed stream. The hydrocarbon mixture feed stream is charged to a separation column operated by a thermal separation process, for example to a distillation column, wherein a material stream enriched in oxygenates is withdrawn via a side outlet and removed from the process. The process according to the invention is particularly useful for processing the product streams obtained in the olefin synthesis by an OTO process.Type: ApplicationFiled: April 21, 2011Publication date: March 7, 2013Applicant: LURGI GMBHInventors: Hermann Bach, Thomas Renner, Martin Rothaemel, Michael Wilken
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Publication number: 20120253090Abstract: A catalyst containing a pentasil-type alumosilicates and a binder, in the form of spheres having an average diameter between 0.3 and 7 mm, wherein the BET surface area of the catalyst ranges from 300 to 600 m2/g. Also disclosed is a method for producing the catalyst, wherein primary crystallites of the aluminosilicate having an average diameter of at least 0.01 ?m and less than 0.1 ?m are mixed with the binder, shaped into spheres having an average diameter between 0.3 and 7 mm, and subsequently calcined. Also disclosed is the use of the catalyst for converting methanol into olefins, in particular propylene. Also disclosed is a method for producing olefins from methanol, in which a feed gas is fed across the catalyst.Type: ApplicationFiled: November 16, 2010Publication date: October 4, 2012Applicants: LURGI GMBH, SUD-CHEMIE AGInventors: Götz Burgfels, Manfred D. Frauenrath, Nadine Fromm, Angelika Glienke, Martin Rothämel, Sven Pohl
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Publication number: 20120220804Abstract: A method of producing dimethyl ether by catalytic dehydration of crude methanol as feedstock in the gas phase includes providing the crude methanol from methanol synthesis, where the crude methanol having a total content of carbonyl compounds of not more than 100 wt-ppm, calculated, as mass equivalents of acetone. The crude methanol is evaporated, and the reaction temperature and reaction pressure are adjusted. A reactor filled with dehydration catalyst is charged with the evaporated crude methanol with a defined space velocity. A gaseous product mixture comprising dimethyl ether, non-reacted methanol and water is discharged. Cooling, partial condensation and separation of the gaseous product mixture are carried out so as to provide gaseous dimethyl ether, liquid water and methanol as products, and the methanol is recirculated.Type: ApplicationFiled: October 25, 2010Publication date: August 30, 2012Applicant: LURGI GMBHInventors: Peter Mitschke, Eckhard Seidel, Thomas Renner, Martin Rothaemel
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Publication number: 20120102829Abstract: For producing synthetic fuels, an educt mixture containing steam and oxygenates, such as methanol and/or dimethyl ether, is converted to olefins on a catalyst in a first process stage, and this olefin mixture then is divided in a separating means into a stream rich in C1-C4 hydrocarbons and a stream rich in C5+ hydrcarbons. The stream rich in C5+ hydrocarbons is divided into a stream rich in C5 and C6 hydrocarbons and a stream rich in C7+ hydrocarbons, wherein the stream rich in C5 and C6 hydrocarbons is at least partly subjected to an etherification with methanol. The ethers thus obtained are admixed to the gasoline product stream.Type: ApplicationFiled: July 3, 2010Publication date: May 3, 2012Applicant: LURGI GMBHInventors: Martin Rothaemel, Theis Ohlhaver, Peter Trabold, Andreas Ochs, Harald Koempel