Patents by Inventor Gregory Charles Kraft

Gregory Charles Kraft 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).

  • Systems and methods for removing gaseous pollutants from a gas stream
    Patent number: 8137649
    Abstract: Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: March 20, 2012
    Assignee: Alcoa Inc.
    Inventors: Rajat Ghosh, Peter Bowen, Charles Dobbs, Roger Nichols, Neal Richard Dando, John R. Smith, Richard R. Lunt, Gregory Charles Kraft
  • SYSTEMS AND METHODS FOR REMOVING GASEOUS POLLUTANTS FROM A GAS STREAM
    Publication number: 20110135554
    Abstract: Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister.
    Type: Application
    Filed: February 14, 2011
    Publication date: June 9, 2011
    Applicant: Alcoa Inc.
    Inventors: Rajat Ghosh, Peter Bowen, Charles Dobbs, Roger Nichols, Neal Richard Dando, John R. Smith, Richard R. Lunt, Gregory Charles Kraft
  • Systems and methods for removing gaseous pollutants from a gas stream
    Patent number: 7906089
    Abstract: Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister. The gas stream may include sulfur dioxide, and the system may be capable of removing at least 71 vol. % sulfur dioxide from the gas stream.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: March 15, 2011
    Assignee: Alcoa Inc.
    Inventors: Rajat Ghosh, Peter Bowen, Myra Bowen, legal representative, Charles Dobbs, Roger Nichols, Neal Dando, John R. Smith, Richard R. Lunt, Gregory Charles Kraft
  • SYSTEMS AND METHODS FOR REMOVING GASEOUS POLLUTANTS FROM A GAS STREAM
    Publication number: 20100175552
    Abstract: Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister. The gas stream may include sulfur dioxide, and the system may be capable of removing at least 71 vol. % sulfur dioxide from the gas stream.
    Type: Application
    Filed: December 17, 2009
    Publication date: July 15, 2010
    Applicant: Alcoa Inc.
    Inventors: Rajat Ghosh, Peter Bowen, Myra Bowen, Charles Dobbs, Roger Nichols, Neal Richard Dando, John R. Smith, Richard R. Lunt, Gregory Charles Kraft
  • Systems and methods for removing gaseous pollutants from a gas stream
    Patent number: 7645430
    Abstract: Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister. The gas stream may include sulfur dioxide, and the system may be capable of removing at least 71 vol. % sulfur dioxide from the gas stream.
    Type: Grant
    Filed: October 8, 2007
    Date of Patent: January 12, 2010
    Assignee: Alcoa Inc.
    Inventors: Rajat Ghosh, Peter Bowen, Charles Dobbs, Roger Nichols, Neal Richard Dando, John R. Smith, Richard R. Lunt, Gregory Charles Kraft