Patents by Inventor Christian Trefzger
Christian Trefzger 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).
-
Patent number: 11125134Abstract: Briefly, in one aspect, a catalytic assembly described herein comprises a module comprising at least one layer of structural catalyst bodies having an inlet face for receiving a gas stream. A diffuser assembly is arranged a distance of greater than 50 mm from the inlet face, the diffuser assembly including at least one diffuser element comprising a plurality of apertures, wherein a ratio of aperture length (L) in the gas stream flow direction to aperture hydraulic diameter (Da) is less than 1.Type: GrantFiled: June 22, 2020Date of Patent: September 21, 2021Assignee: CORMETECH, INC.Inventors: Mark L Schirmer, Christian Trefzger, Stephen M Lyons, Colby A Burtt, William D Buynitzky, Chris E Difrancesco
-
Patent number: 11083996Abstract: In one aspect, catalyst modules are described herein comprises structural catalyst bodies having cross-sectional flow channel geometries and surface features for enhanced catalytic activity. In some embodiments, the catalyst modules and associated structural catalyst bodies are suitable for use in high particulate matter environments. Briefly, a catalyst module comprises a framework and a plurality of structural catalyst bodies positioned in the framework, a structural catalyst body comprising an outer peripheral wall and a plurality of inner partition walls forming individual flow channels of rectangular cross-section, the outer peripheral wall resistant to localized flexural failures induced by material between adjacent structural catalyst bodies of the module.Type: GrantFiled: December 12, 2017Date of Patent: August 10, 2021Assignee: CORMETECH, INC.Inventors: Chris E. Difrancesco, Christian Trefzger, Josh Andreas, Colby Burtt
-
Publication number: 20200318519Abstract: Briefly, in one aspect, a catalytic assembly described herein comprises a module comprising at least one layer of structural catalyst bodies having an inlet face for receiving a gas stream. A diffuser assembly is arranged a distance of greater than 50 mm from the inlet face, the diffuser assembly including at least one diffuser element comprising a plurality of apertures, wherein a ratio of aperture length (L) in the gas stream flow direction to aperture hydraulic diameter (Da) is less than 1.Type: ApplicationFiled: June 22, 2020Publication date: October 8, 2020Inventors: MARK L. SCHIRMER, Christian Trefzger, Stephen M. Lyons, Colby A. Burtt, William D. Buynitzky, Chris E. Difrancesco
-
Patent number: 10690035Abstract: Briefly, in one aspect, a catalytic assembly described herein comprises a module comprising at least one layer of structural catalyst bodies having an inlet face for receiving a gas stream. A diffuser assembly is arranged a distance of greater than 50 mm from the inlet face, the diffuser assembly including at least one diffuser element comprising a plurality of apertures, wherein a ratio of aperture length (L) in the gas stream flow direction to aperture hydraulic diameter (Da) is less than 1.Type: GrantFiled: February 15, 2019Date of Patent: June 23, 2020Assignee: Cormetech, Inc.Inventors: Mark L. Schirmer, Christian Trefzger, Steve M. Lyons, Colby A. Burtt, William D. Buynitzky, Chris E. Difrancesco
-
Publication number: 20200078732Abstract: In one aspect, catalyst modules are described herein comprises structural catalyst bodies having cross-sectional flow channel geometries and surface features for enhanced catalytic activity. In some embodiments, the catalyst modules and associated structural catalyst bodies are suitable for use in high particulate matter environments. Briefly, a catalyst module comprises a framework and a plurality of structural catalyst bodies positioned in the framework, a structural catalyst body comprising an outer peripheral wall and a plurality of inner partition walls forming individual flow channels of rectangular cross-section, the outer peripheral wall resistant to localized flexural failures induced by material between adjacent structural catalyst bodies of the module.Type: ApplicationFiled: December 12, 2017Publication date: March 12, 2020Inventors: Chris E. DIFRANCESCO, Christian TREFZGER, Josh ANDREAS, Colby BURTT
-
Publication number: 20190257233Abstract: Briefly, in one aspect, a catalytic assembly described herein comprises a module comprising at least one layer of structural catalyst bodies having an inlet face for receiving a gas stream. A diffuser assembly is arranged a distance of greater than 50 mm from the inlet face, the diffuser assembly including at least one diffuser element comprising a plurality of apertures, wherein a ratio of aperture length (L) in the gas stream flow direction to aperture hydraulic diameter (Da) is less than 1.Type: ApplicationFiled: February 15, 2019Publication date: August 22, 2019Inventors: Mark L. SCHIRMER, Christian TREFZGER, Steve M. LYONS, Colby A. BURTT, William D. BUYNITZKY, Chris E. DIFRANCESCO
-
Publication number: 20190247790Abstract: In one aspect, structural catalyst bodies are described herein having cross-sectional flow channel geometries and surface features for enhanced catalytic activity. A structural catalyst body comprises an outer peripheral wall and a plurality of inner partition walls defining individual flow channels of rectangular cross-section, wherein one or more of the inner partition walls comprise surface protrusions, surface indentations or combinations thereof.Type: ApplicationFiled: September 28, 2017Publication date: August 15, 2019Inventors: Chris E. DIFRANCESCO, Gavin MACINNES, Christian TREFZGER, William BUYNITZKY
-
Patent number: 9707541Abstract: In one aspect, structural catalyst bodies comprising one or more gradients of catalytic material are provided herein. In some embodiments, a structural catalyst body described herein comprises an inner partition wall having a first surface and a second surface opposite the first surface, the inner partition wall having a gradient of catalytic material along the width of the inner partition wall.Type: GrantFiled: November 26, 2014Date of Patent: July 18, 2017Assignee: Cormetech, Inc.Inventors: Christian Trefzger, Chris E. Difrancesco, Raymond Oh
-
Publication number: 20150079334Abstract: In one aspect, structural catalyst bodies comprising one or more gradients of catalytic material are provided herein. In some embodiments, a structural catalyst body described herein comprises an inner partition wall having a first surface and a second surface opposite the first surface, the inner partition wall having a gradient of catalytic material along the width of the inner partition wall.Type: ApplicationFiled: November 25, 2014Publication date: March 19, 2015Applicant: CORMETECH, INC.Inventors: Christian Trefzger, Chris E. Difrancesco, Raymond Oh
-
Publication number: 20150079335Abstract: In one aspect, structural catalyst bodies comprising one or more gradients of catalytic material are provided herein. In some embodiments, a structural catalyst body described herein comprises an inner partition wall having a first surface and a second surface opposite the first surface, the inner partition wall having a gradient of catalytic material along the width of the inner partition wall.Type: ApplicationFiled: November 26, 2014Publication date: March 19, 2015Applicant: CORMETECH, INC.Inventors: Christian TREFZGER, Chris E. DIFRANCESCO, Raymond OH
-
Patent number: 8901033Abstract: In one aspect, structural catalyst bodies comprising one or more gradients of catalytic material are provided herein. In some embodiments, a structural catalyst body described herein comprises an inner partition wall having a first surface and a second surface opposite the first surface, the inner partition wall having a gradient of catalytic material along the width of the inner partition wall.Type: GrantFiled: August 9, 2011Date of Patent: December 2, 2014Assignee: Cormetech, Inc.Inventors: Christian Trefzger, Chris E DiFrancesco, Raymond H. Oh
-
Patent number: 8277737Abstract: The present invention provides monolithic structural catalysts. The catalysts have a thin wall structure and are advantageous for catalyzing reactions of gaseous fluid or liquid fluid molecules, such as the denitration or selective catalytic reduction (SCR) of nitrogen oxides (NOx) in combustion flue gases. In an embodiment, the honeycomb-like monolithic structural body includes catalytically active outer peripheral walls and a plurality of catalytically active thin-walled inner partition walls, the thin-walled inner partition walls adapted to enhance fluid flow through the monolithic catalytic body and to increase interaction of the fluid molecules with the catalyst body.Type: GrantFiled: July 20, 2010Date of Patent: October 2, 2012Assignee: Cormetech, Inc.Inventors: Chris E. DiFrancesco, James C. Altizer, Thomas W. Hastings, Edward F. Kassman, Christian Trefzger
-
Publication number: 20120087835Abstract: In one aspect, structural catalyst bodies comprising one or more gradients of catalytic material are provided herein. In some embodiments, a structural catalyst body described herein comprises an inner partition wall having a first surface and a second surface opposite the first surface, the inner partition wall having a gradient of catalytic material along the width of the inner partition wall.Type: ApplicationFiled: August 9, 2011Publication date: April 12, 2012Applicant: CORMETECH, INC.Inventors: Christian Trefzger, Chris E. Difrancesco, Raymond H. Oh
-
Publication number: 20100284877Abstract: The present invention provides monolithic structural catalysts. The catalysts have a thin wall structure and are advantageous for catalyzing reactions of gaseous fluid or liquid fluid molecules, such as the denitration or selective catalytic reduction (SCR) of nitrogen oxides (NOx) in combustion flue gases. In an embodiment, the honeycomb-like monolithic structural body includes catalytically active outer peripheral walls and a plurality of catalytically active thin-walled inner partition walls, the thin-walled inner partition walls adapted to enhance fluid flow through the monolithic catalytic body and to increase interaction of the fluid molecules with the catalyst body.Type: ApplicationFiled: July 20, 2010Publication date: November 11, 2010Inventors: Chris E. DiFrancesco, James C. Altizer, Thomas W. Hastings, Edward F. Kassman, Christian Trefzger
-
Patent number: 7807110Abstract: The present invention provides monolithic structural catalysts. The catalysts have a thin wall structure and are advantageous for catalyzing reactions of gaseous fluid or liquid fluid molecules, such as the denitration or selective catalytic reduction (SCR) of nitrogen oxides (NOx) in combustion flue gases. In an embodiment, the honeycomb-like monolithic structural body includes catalytically active outer peripheral walls and a plurality of catalytically active thin-walled inner partition walls, the thin-walled inner partition walls adapted to enhance fluid flow through the monolithic catalytic body and to increase interaction of the fluid molecules with the catalyst body.Type: GrantFiled: March 12, 2004Date of Patent: October 5, 2010Assignee: Cormetech Inc.Inventors: Chris E. DiFrancesco, James C. Altizer, Thomas W. Hastings, Edward F. Kassman, Christian Trefzger
-
Patent number: 7776786Abstract: The present invention provides monolithic structural catalysts. The catalysts have a high open frontal area structure and composition advantageous for use in high particulate matter environments such as coal-fired industrial applications. In an embodiment, the present invention provides a monolithic structural catalyst body comprising a high open frontal area structure and composition that can achieve an efficient selective reduction of nitrogen oxides while minimizing the oxidation of sulfur dioxide wherein the structure of the catalyst body is resistant to plugging by particulate matter.Type: GrantFiled: May 4, 2005Date of Patent: August 17, 2010Assignee: Cormetech, Inc.Inventors: Chris E. DiFrancesco, Thomas W. Hastings, Edward F. Kassmann, Christian Trefzger
-
Publication number: 20050255021Abstract: The present invention provides monolithic structural catalysts. The catalysts have a high open frontal area structure and composition advantageous for use in high particulate matter environments such as coal-fired industrial applications. In an embodiment, the present invention provides a monolithic structural catalyst body comprising a high open frontal area structure and composition that can achieve an efficient selective reduction of nitrogen oxides while minimizing the oxidation of sulfur dioxide wherein the structure of the catalyst body is resistant to plugging by particulate matter.Type: ApplicationFiled: May 4, 2005Publication date: November 17, 2005Inventors: Chris DiFrancesco, Thomas Hastings, Edward Kassmann, Christian Trefzger
-
Publication number: 20050202971Abstract: The present invention provides monolithic structural catalysts. The catalysts have a thin wall structure and are advantageous for catalyzing reactions of gaseous fluid or liquid fluid molecules, such as the denitration or selective catalytic reduction (SCR) of nitrogen oxides (NOx) in combustion flue gases. In an embodiment, the honeycomb-like monolithic structural body includes catalytically active outer peripheral walls and a plurality of catalytically active thin-walled inner partition walls, the thin-walled inner partition walls adapted to enhance fluid flow through the monolithic catalytic body and to increase interaction of the fluid molecules with the catalyst body.Type: ApplicationFiled: March 12, 2004Publication date: September 15, 2005Inventors: Chris DiFrancesco, James Altizer, Thomas Hastings, Edward Kassman, Christian Trefzger
-
Patent number: 6458187Abstract: A shaped zeolite-containing body, e.g., zeolite-containing monoliths, having high compressive strength is prepared from a particular class of siloxane-based binders in combination with zeolite, plasticizing agent, and methylcellulose. It has been discovered that when using the particular class of siloxane binder with the aforementioned components, the body formed therefrom can be processed and calcined at temperatures below 300° C., thereby reducing costs typically seen with other processes for preparing shaped materials containing zeolite. The shaped bodies of this invention have been shown to have compressive strengths of at least 20 N/mm2 or more.Type: GrantFiled: November 6, 2000Date of Patent: October 1, 2002Assignee: Grace GmbH & Co. KGInventors: Hans-Gerhard Fritz, Christian Trefzger, Hans Hermann Höfer