Patents by Inventor Wilhelm Albert Meulenberg
Wilhelm Albert Meulenberg 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: 11786870Abstract: Disclosed are a CMS membrane, characterized in that it is obtainable by pyrolysis of a polyimide composed of the monomers 1-(4-aminophenyl)-1,3,3-trimethyl-2H-inden-5-amine and 5-(1,3-dioxo-2-benzofuran-5-carbonyl-2-benzofuran-1,3-dione of the following formulae: preferably by pyrolysis of the polyimide having the CAS number 62929-02-6, and a supported CMS membrane comprising a CMS membrane obtainable from a polyimide by pyrolysis and a porous support, characterized in that a mesoporous intermediate layer is provided between the CMS membrane and the porous support. Further disclosed are a process for preparing the supported membrane, the use of the membranes for separating gas mixtures or liquid mixtures, an apparatus for gas separation or for liquid separation, and the use of the polyimide for preparing a CMS membrane by pyrolysis.Type: GrantFiled: September 16, 2019Date of Patent: October 17, 2023Assignee: Forschungszentrum Jülich GmbHInventors: Patrick Tchoua Ngamou, Mariya E. Ivanova, Wilhelm Albert Meulenberg, Olivier Guillon
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Publication number: 20220032237Abstract: Disclosed are a CMS membrane, characterized in that it is obtainable by pyrolysis of a polyimide composed of the monomers 1-(4-aminophenyl)-1,3,3-trimethyl-2H-inden-5-amine and 5-(1,3-dioxo-2-benzofuran-5-carbonyl-2-benzofuran-1,3-dione of the following formulae: preferably by pyrolysis of the polyimide having the CAS number 62929-02-6, and a supported CMS membrane comprising a CMS membrane obtainable from a polyimide by pyrolysis and a porous support, characterized in that a mesoporous intermediate layer is provided between the CMS membrane and the porous support. Further disclosed are a process for preparing the supported membrane, the use of the membranes for separating gas mixtures or liquid mixtures, an apparatus for gas separation or for liquid separation, and the use of the polyimide for preparing a CMS membrane by pyrolysis.Type: ApplicationFiled: September 16, 2019Publication date: February 3, 2022Inventors: Patrick Tchoua Ngamou, Mariya E. Ivanova, Wilhelm Albert Meulenberg, Olivier Guillon
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Patent number: 8778054Abstract: A method for generating heat energy in a power plant by burning a carbonaceous fuel in a combustion chamber of the power plant and a system for carrying out the method is described. A combustion chamber is fluidly connected to a membrane chamber that includes a membrane operating at a temperature between 600 and 1000° C. The combustion chamber receives a cleaned flue-gas oxygen mixture for combustion from the membrane chamber. Oxygen from heated air passes through the membrane in the membrane chamber to the permeate side of the membrane, where it is mixed with cleaned heated flue gas and the resulting gas mixture is fed to the combustion chamber. Flue gas removed from the combustion chamber are cooled, cleaned and heated as described herein and recirculated to the membrane chamber.Type: GrantFiled: April 3, 2010Date of Patent: July 15, 2014Assignee: Forschungszentrum Juelich GmbHInventors: Jewgeni Nazarko, Ernst Riensche, Reinhard Menzer, Wilhelm Albert Meulenberg, Stefan Baumann
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Publication number: 20130216938Abstract: The material according to the invention is based on a material having the composition Ln6WO12 with a defect fluorite structure in which the cations, at least partially, have been substituted in a defined manner in the A and/or B position. It has the following composition: Ln1-xAx)6(W1-yBy)zO12-? where Ln=an element from the group (La, Pr, Nd, Sm), A=at least one element from the group (La, Ce, Pr, Nd, Eu, Gd, Tb, Er, Yb, Ca, Mg, Sr, Ba, Th, In, Pb), B=at least one element from the group (Mo, Re, U, Cr, Nb), 0?x?0.7 and 0?y?0.5, wherein, however, either x or y>0, 1.00?z?1.25 and 0???0.3. The mixed proton-electron conducting material exhibits an improved mixed conductivity, good chemical stability as well as good sintering properties, and can be used in particular as a material for a hydrogen-separating membrane or as a electrolyte at higher temperatures.Type: ApplicationFiled: June 28, 2011Publication date: August 22, 2013Applicants: UNIVERSIDAD POLITECNICA DE VALENCIA, FORSCHUNGSZENTRUM JULICH GMBHInventors: Wilhelm Albert Meulenberg, Mariya Ivanova, Hans Peter Buchkremer, Detlev Stoever, Jose Manuel Serra Alfaro, Sonia Escolastico
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Patent number: 8506678Abstract: Provided is a power plant for generating electrical energy comprising a combustion chamber for producing steam, at least one downstream flue gas purification stage, a separation stage for CO2, a recycling circuit for the flue gas, and a high-temperature O2 membrane, which is connected upstream of the combustion chamber. The high-temperature O2 membrane has an inlet and an outlet on the feed side which are thermally coupled by way of a heat exchanger. On the permeate side, the high-temperature O2 membrane has only an outlet which is connected to the combustion chamber and/or the flue gas recycling circuit and a means for cooling and/or compression which is disposed in this outlet.Type: GrantFiled: October 29, 2008Date of Patent: August 13, 2013Assignee: Forschungszentrum Juelich GmbHInventors: Wilhelm Albert Meulenberg, Stefan Baumann, Ludger Blum, Ernst Riensche
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Patent number: 8486184Abstract: A composite membrane for selective gas separation, comprises a layer system having a continuously porous, mechanically stable carrier layer, which has an average pore size in the ?m range, further having at least one continuously porous intermediate layer, which is disposed on the carrier layer and has an average pore size in the range of 2 to 200 nm, and further having a gastight functional layer, which is disposed on the intermediate layer and is made of a mixed-conductive material having a maximum layer thickness of 1 ?m. The carrier layer comprises a structural ceramic, a metal, or a cermet and has a layer thickness of no more than 1 mm. The intermediate layer is present with a total layer thickness of no more than 100 ?m and has an average pore size in the range of 10 to 100 nm. The functional layer comprises a perovskite, a fluorite, or a material having a K2NiF4 structure, such as La1-xSrxCo1-yFeyO3-8 (LSCF).Type: GrantFiled: February 21, 2009Date of Patent: July 16, 2013Assignee: Forschungszentrum Juelich GmbHInventors: Stefan Baumann, Jose Manuel Serra Alfaro, Wilhelm Albert Meulenberg, Hans-Peter Buchkremer, Detlev Stoever
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Publication number: 20120060728Abstract: A combustion system comprising a burner and a combustion chamber, is connected by way of a line to a membrane unit having a high-temperature membrane for extracting the combustion oxygen from the air, the membrane unit having a feed line for a flushing gas on the permeate side. The combustion system further comprises a circulation element for recirculated flue gas, a heat exchanger being disposed upstream of the membrane unit inside the flue gas line. Disclosed is a method for operating this combustion system, in which carbon-containing fuel is burned in an oxygen-flue gas atmosphere, and in which the oxygen for combustion is produced from air by means of a membrane unit comprising a high-temperature membrane, and in which the flue gas is in part recirculated.Type: ApplicationFiled: April 3, 2010Publication date: March 15, 2012Inventors: Jewgeni Nazarko, Ernst Riensche, Reinhard Menzer, Wilhelm Albert Meulenberg, Stefan Baumann
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Publication number: 20110020192Abstract: The invention relates to a composite membrane for selective gas separation, comprising a layer system having a through-and-through porous, mechanically stable carrier layer, which has an average pore size in the ?m range, further having at least one through-and-through porous intermediate layer, which is disposed on the carrier layer and has an average pore size in the range between 2 and 200 nm, and further having a gas-tight functional layer, which is disposed on the intermediate layer and is made of mixed-conductive material having a maximum layer thickness of 1 ?m. The carrier layer comprises structural ceramics, a metal or a cermet and has a layer thickness of no more than 1 mm. The intermediate layer is present in a total layer thickness of no more than 100 ?m and has an average pore size in the range of 10 and 100 nm. The functional layer comprises a perovskite, a fluorite, or a material having a K2NiF4structure, such as La1-xSrxCo1-yFeyO3-?(LSCF).Type: ApplicationFiled: February 21, 2009Publication date: January 27, 2011Applicant: FORSCHUNGSZENTRUM JÜLICH GMBHInventors: Stefan Baumann, Jose Manuel Serra Alfaro, Wilhelm Albert Meulenberg, Hans-Peter Buchkremer, Detlev Stoever
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Publication number: 20100263377Abstract: Provided is a power plant for generating electrical energy comprising a combustion chamber for producing steam, at least one downstream flue gas purification stage, a separation stage for CO2, a recycling circuit for the flue gas, and a high-temperature O2 membrane, which is connected upstream of the combustion chamber. The high-temperature O2 membrane has an inlet and an outlet on the feed side which are thermally coupled by way of a heat exchanger. On the permeate side, the high-temperature O2 membrane has only an outlet which is connected to the combustion chamber and/or the flue gas recycling circuit and a means for cooling and/or compression which is disposed in this outlet.Type: ApplicationFiled: October 29, 2008Publication date: October 21, 2010Inventors: Wilhelm Albert Meulenberg, Stefan Baumann, Ludger Blum, Ernst Riensche
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Publication number: 20100172813Abstract: A method for separating carbon dioxide from a flue gas using a membrane (membrane module) is characterized in that the flue gas is at temperatures above the condensation point of the water vapor before entering the membrane separation stage. In this way, condensation of any potentially entrained water vapor out of the flue gas is avoided, so as to consistently prevent clogging of the membrane pores. The high temperatures can be achieved in different ways. The temperature of the flue gas can easily be increased to the necessary temperatures by way of an upstream heat exchanger or a burner. A compressor, which is connected upstream of the membrane module and also advantageously increases the CO2 partial pressure, brings about the necessary temperature increase at the same time. As a further alternative for the invention, the CO2 separation is performed even before desulfurizing the flue gas.Type: ApplicationFiled: May 30, 2008Publication date: July 8, 2010Inventors: Jewgeni Nazarko, Ernst Riensche, Ludger Blum, Reinhard Menzer, Wilhelm Albert Meulenberg, Martin Bram
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Publication number: 20090266237Abstract: The invention relates to a method for the hydrothermal production of a microporous membrane. According to said method, a colloidal solution comprising zeolite frameworks with 4-ring, 6-ring, and/or 8-ring pores which are provided as crystallites whose size ranges from 2 to 25 nm is applied to a porous substrate with the aid of a wet application technique. The applied layer is contacted with a hydrothermal liquid, and a nanocrystalline, microporous zeolite layer having an average pore diameter of 0.2 to 0.45 nm is synthesized at temperatures ranging between 50 and 250° C. and at an autogenous pressure. Such a microporous membrane comprising a porous substrate and at least one nanocrystalline zeolite layer that is disposed thereupon and has an average pore diameter of 0.2 to 0.45 nm is advantageously suitable for use as a separating device for gas phase separation, making it possible to separate particularly N2O2, N2/CO2, H2/CO2, or CO2/CH4 gas mixtures.Type: ApplicationFiled: April 1, 2006Publication date: October 29, 2009Inventors: Jose Manuel Serra Alfaro, George Johannes Wilhelmus Van Der Donk, Wilhelm Albert Meulenberg, Detlev Stover, Hermann Gies
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Patent number: 7175931Abstract: The invention relates to a device for electrically contacting electrodes in high-temperature fuel cells. The inventive device is characterized by an interconnector plate with openings and contact elements, which are located therein and which are provided for electrically contacting electrodes. The contact elements protrude from both sides of the interconnector plate at a predetermined height, and the openings are sealed in a gas-tight manner.Type: GrantFiled: May 19, 2001Date of Patent: February 13, 2007Assignee: Forschungszentrum Julich GmbHInventors: Peter Batfalsky, Wilhelm Albert Meulenberg, Lambertus Gerardus Johannes De Haart
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Publication number: 20030113609Abstract: The invention relates to a device for electrically contacting electrodes in high-temperature fuel cells. The inventive device is characterized by an interconnector plate with openings and contact elements, which are located therein and which are provided for electrically contacting electrodes. The contact elements protrude from both sides of the interconnector plate at a predetermined height, and the openings are sealed in a gas-tight manner.Type: ApplicationFiled: December 4, 2002Publication date: June 19, 2003Inventors: Peter Batfalsky, Wilhelm Albert Meulenberg, Lambertus Gerardus Johannes De Haart