Patents by Inventor Georg R. U. Gebhard

Georg R. U. Gebhard 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).

  • Process for the dry removal of sulfur dioxide from flue gas
    Patent number: 4710365
    Abstract: A dry process for desulfurization of a power plant flue gas recovers, e.g. from an electrostatic precipitator, the solids which include unreacted absorbent, absorption reaction product and fly ash, and recycles at least part of this recovered solid product to contact with the flue gas for further absorption.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: December 1, 1987
    Assignee: Rheinisch-Westfalisches Elektrizitatswerk Aktiengesellschaft
    Inventors: Georg R. U. Gebhard, Klaus R. G. Hein, Wolfgang Glaser
  • Method of removing sulfur dioxide and other toxic and noxious components from flue gases
    Patent number: 4540555
    Abstract: A method of and an apparatus for the desulfurization of the flue gases from a fossil fuel power plant. A particulate absorbent is contacted with the flue gases in a dry desulfurization step, particulates being then separated from the flue gas and being utilized in part as a secondary absorbent in a subsequent scrubbing of the flue gas. The sludge from the wet scrubbing is combined with the remainder of the dried particles from the separator to form a settable composition.
    Type: Grant
    Filed: August 26, 1983
    Date of Patent: September 10, 1985
    Assignee: Rheinisch-Westfalisches Elektrizitatswerk Aktiengesellschaft
    Inventors: Paul W. U. Franke, Wolfgang Glaser, Georg R. U. Gebhard, Klaus R. G. Hein
  • Carboxylic acid activated dry calcium absorbent method for removing sulfur dioxide from a flue gas
    Patent number: 4533532
    Abstract: An absorbent for the dry removal of sulfur dioxide and other noxious and toxic components from a combustion flue gas which consists essentially of at least one finely divided alkaline-earth compound and an additive selected from the group which consists of at least one carboxylic acid or an alkali metal, alkaline-earth metal or ammonium salt thereof.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: August 6, 1985
    Assignee: Rheinisch-Westfallisches Elektrizitatswerk Aktiengesellschaft
    Inventors: Georg R. U. Gebhard, Klaus R. G. Hein, Wolfgang Glaser
  • Absorbent for the dry removal of sulfur dioxide and like components of an exhaust gas
    Patent number: 4526703
    Abstract: An absorbent for the dry removal of sulfur dioxide and other noxious and toxic components from a combustion flue gas which consists essentially of at least one finely divided alkaline-earth compound and an additive selected from the group which consists of at least one carboxylic acid or an alkali metal, alkaline-earth metal or ammonium salt thereof.
    Type: Grant
    Filed: August 26, 1983
    Date of Patent: July 2, 1985
    Assignee: Rheinisch-Westfallisches Elektrizitatswerk Aktiengesellschaft
    Inventors: Georg R. U. Gebhard, Klaus R. G. Hein, Wolfgang Glaser
  • Method of making a building material
    Patent number: 4501618
    Abstract: A building material consists essentially of an aqueous slurry of a dry residue obtained by treating a flue gas containing fly ash from a fossil fuel combustion chamber with a finely divided absorbent consisting at least primarily of calcium oxide, calcium hydroxide and calcium carbonate to permit reaction between the absorbent and sulfur dioxide in the flue gas, and dry separation of the reacted absorbent from the residual flue gas.
    Type: Grant
    Filed: August 26, 1983
    Date of Patent: February 26, 1985
    Assignee: Rheinisch-Westfalisches Elektrizitatswerk Aktiengesellschaft
    Inventors: Georg R. U. Gebhard, Klaus R. G. Hein