Patents by Inventor Thies Hoffmann

Thies Hoffmann 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).

  • Methods of removing calcium material from a substrate or catalytic converter
    Patent number: 9061275
    Abstract: Methods of removing or softening calcium material from a substrate (e.g., a catalytic converter) and regenerating a catalytic converter are provided. A substrate (e.g., a catalyst support material) having a calcium containing material (e.g., calcium-containing fly ash) embedded or deposited thereon can be treated with a composition including one or more organosulfur oxoacids or salts thereof.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 23, 2015
    Assignee: STEAG Energy Services GmbH
    Inventors: Thomas Michael Barnard, V, Albert Joseph Stier, Thies Hoffmann
  • Methods for removing iron material from a substrate
    Patent number: 8946105
    Abstract: Methods of removing iron from a catalytic converter having an accumulation of one or more iron compounds and regenerating a catalytic converter are provided. A catalytic converter having an accumulation of one or more iron compounds embedded or deposited thereon can be treated with a substantially aqueous alkaline solution in which the substantially aqueous alkaline solution includes an antioxidant.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 3, 2015
    Assignee: Steag Energy Services GmbH
    Inventors: Birgit Marrino, Thies Hoffmann
  • METHODS OF REMOVING CALCIUM MATERIAL FROM A SUBSTRATE OR CATALYTIC CONVERTER
    Publication number: 20140274661
    Abstract: Methods of removing or softening calcium material from a substrate (e.g., a catalytic converter) and regenerating a catalytic converter are provided. A substrate (e.g., a catalyst support material) having a calcium containing material (e.g., calcium-containing fly ash) embedded or deposited thereon can be treated with a composition including one or more organosulfur oxoacids or salts thereof.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: Thomas Michael Barnard, V, Albert Joseph Stier, Thies Hoffmann
  • METHODS FOR REMOVING IRON MATERIAL FROM A SUBSTRATE
    Publication number: 20140271383
    Abstract: Methods of removing iron from a catalytic converter having an accumulation of one or more iron compounds and regenerating a catalytic converter are provided. A catalytic converter having an accumulation of one or more iron compounds embedded or deposited thereon can be treated with a substantially aqueous alkaline solution in which the substantially aqueous alkaline solution includes an antioxidant.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: STEAG ENERGY SERVICES GMBH
    Inventors: Birgit Marrino, Thies Hoffmann
  • Method for treating SCR catalysts having accumulated iron compounds
    Patent number: 8389431
    Abstract: The present disclosure relates to methods for treating deactivated SCR catalysts having an increased SO2/SO3 conversion rate as a result of the accumulation of one or more iron compounds. The methods are characterized in that the catalysts are treated with an aqueous solution of an acidic reactive salt or hydrogen fluoride, with the addition of at least one antioxidant.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: March 5, 2013
    Assignee: Steag Energy Services GmbH
    Inventors: Thies Hoffmann, Birgit Marrino
  • METHOD FOR TREATING SCR CATALYSTS HAVING ACCUMULATED IRON COMPOUNDS
    Publication number: 20120053046
    Abstract: The present disclosure relates to methods for treating deactivated SCR catalysts having an increased SO2/SO3 conversion rate as a result of the accumulation of one or more iron compounds. The methods are characterized in that the catalysts are treated with an aqueous solution of an acidic reactive salt or hydrogen fluoride, with the addition of at least one antioxidant.
    Type: Application
    Filed: November 3, 2011
    Publication date: March 1, 2012
    Applicant: Steag Energy Services LLC
    Inventors: Thies Hoffmann, Birgit Marrino
  • METHOD OF REGENERATION OF SCR CATALYST POISONED BY PHOSPHOROUS COMPONENTS IN FLUE GAS
    Publication number: 20100240523
    Abstract: A method of regeneration of a SCR catalyst for use in high temperature thermal processes such as in a power plant facility burning fossil fuels, bio-based fuels, or a combination thereof, wherein the catalyst is poisoned by phosphorous components in the flue gas and the catalyst is treated using a base, preferably an alkali metal hydroxide.
    Type: Application
    Filed: June 3, 2010
    Publication date: September 23, 2010
    Applicant: Evonik Energy Services LLC
    Inventors: Hans-Ulrich Hartenstein, Thies Hoffmann
  • Methods of regeneration of SCR catalyst poisoned by phosphorous components in flue gas
    Patent number: 7741239
    Abstract: A method of regeneration of a SCR catalyst for use in high temperature thermal processes such as in a power plant facility burning fossil fuels, bio-based fuels, or a combination thereof, wherein the catalyst is poisoned by phosphorous components in the flue gas and the catalyst is treated using a base, preferably an alkali metal hydroxide.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: June 22, 2010
    Assignee: Evonik Energy Services LLC
    Inventors: Hans-Ulrich Hartenstein, Thies Hoffmann
  • Method of regeneration of SCR catalyst
    Patent number: 7723251
    Abstract: A method of regeneration of a SCR catalyst for use in a power plant facility burning fossil fuels, bio-based fuels, or a combination thereof, wherein poisons are removed from the catalyst. The method is suitable for use during neutralization using C1 to C8 carboxylic acids.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: May 25, 2010
    Assignee: Evonik Energy Services LLC
    Inventors: Hans-Ulrich Hartenstein, Thies Hoffmann
  • Methods of regeneration of SCR catalyst poisoned by phosphorous components in flue gas
    Publication number: 20090233787
    Abstract: A method of regeneration of a SCR catalyst for use in high temperature thermal processes such as in a power plant facility burning fossil fuels, bio-based fuels, or a combination thereof, wherein the catalyst is poisoned by phosphorous components in the flue gas and the catalyst is treated using a base, preferably an alkali metal hydroxide.
    Type: Application
    Filed: October 8, 2008
    Publication date: September 17, 2009
    Applicant: Evonik Energy Services LLC
    Inventors: Hans-Ulrich Hartenstein, Thies Hoffmann
  • Method of regeneration of SCR catalyst
    Publication number: 20090233786
    Abstract: A method of regeneration of a SCR catalyst for use in a power plant facility burning fossil fuels, bio-based fuels, or a combination thereof, wherein poisons are removed from the catalyst. The method is suitable for use during neutralization using C1 to C8 carboxylic acids.
    Type: Application
    Filed: October 8, 2008
    Publication date: September 17, 2009
    Applicant: Evonik Energy Services LLC
    Inventors: Hans-Ulrich Hartenstein, Thies Hoffmann