Patents by Inventor Mark S. Ehrnschwender

Mark S. Ehrnschwender 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).

  • Method for removing sulfur dioxide, mercury, and nitrogen oxides from a gas stream
    Patent number: 7514053
    Abstract: Methods for scrubbing gas streams to remove acid gases including sulfur dioxide, mercury-containing substances, and/or nitrogen oxides from the gas stream. The gas stream is contacted with a potassium-based sorbent effective for removing at least a portion of the acid gases. The partially cleaned gas stream is then contacted with an oxidant effective to remove at least a portion of the nitrogen oxides and/or mercury-containing substances after partially removing the acid gas substance.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: April 7, 2009
    Assignee: EnviroSolv Energy LLC
    Inventors: Dennis W. Johnson, Mark S. Ehrnschwender