Patents Represented by Attorney, Agent or Law Firm Barry I. Friedman
  • Low NOx burner operations with natural gas cofiring
    Patent number: 4960059
    Abstract: A method is disclosed which overcomes the problems which tend to occur in the retrofitting of coal burners for low-NOx emission. A gaseous or volatile liquid fuel is introduced into the primary or secondary air with the amount ranging from 2% to 25% of the boiler energy input as necessary to achieve the necessary NOx reduction and improved load following without operational problems. Optionally gas can be injected through gas burners in an amount ranging from 2% to 50% of the boiler energy input.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: October 2, 1990
    Assignee: Consolidated Natural Gas Service Company, Inc.
    Inventors: Eugene Berkau, Bernard Breen, James E. Gabrielson, Steve Winberg