Patents by Inventor Edward B. Dismukes

Edward B. Dismukes 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 of removing selenium from flue gases
    Patent number: 5192514
    Abstract: A method of removing gaseous selenium from a flue gas is disclosed. The method includes injecting an effective amount of ammonia into the flue gas to produce a solid selenium reaction product. The solid selenium reaction product is removed from the flue gas by undergoing deposition in a filter assembly. The filter assembly may then be cleaned through conventional methods.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: March 9, 1993
    Assignee: Electric Power Research Institute, Inc.
    Inventor: Edward B. Dismukes
  • Catalytic oxidation of SO.sub.2 to SO.sub.3 in the presence of fly ash
    Patent number: 5011516
    Abstract: A method is provided for improving the electrostatic precipitation of particulates, i.e., from combustion gases by withdrawing part of the flue gases, catalytically converting the SO.sub.2 to SO.sub.3 and reinjecting it into the main flue stream.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: April 30, 1991
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Ralph A. Altman, John P. Gooch, Edward B. Dismukes
  • Method for flue gas conditioning with the decomposition products of ammonium sulfate or ammonium bisulfate
    Patent number: 4872887
    Abstract: A method is provided for enhancing the efficiency of fly ash collection in an electrostatic precipitator by lowering the resistivity of the fly ash particles in the flue gas, comprising the steps of introducing an aqueous solution of ammonium sulfate or ammonium bisulfate into a slipstream of hot flue gas or hot combustion air in a chamber external to the main flue gas duct wherein thermal decomposition is effected, removing the NH.sub.3 decomposition product by catalytic oxidation to increase the effectiveness of the SO.sub.3 decomposition product, and then distributing the SO.sub.3 decomposition product into the main flue gas stream exiting from the air preheater at a point upstream from the electrostatic precipitator.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: October 10, 1989
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Ralph F. Altman, John P. Gooch, Edward B. Dismukes, Edward C. Landham, Jr.
  • Method for flue gas conditioning with the decomposition products of ammonium sulfate or ammonium bisulfate
    Patent number: 4533364
    Abstract: A method is provided for enhancing the efficiency of fly ash collection in an electrostatic precipitator by lowering the resistivity of the fly ash particles in the flue gas, comprising the steps of introducing an aqueous solution of ammonium sulfate or ammonium bisulfate into a slipstream of hot gas in a chamber external to the main flue gas duct wherein thermal decomposition is effected and distributing the decomposition products into the main flue gas stream exiting from the air preheater at a point upstream from the electrostatic precipitator.
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: August 6, 1985
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Ralph F. Altman, John P. Gooch, Edward B. Dismukes, Roy E. Bickelhaupt, Robert S. Dahlin