Patents by Inventor John H. Pohl

John H. Pohl 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 to improve the performance of low-NOx burners operating on difficult to stabilize coals
    Patent number: 4932337
    Abstract: A method is disclosed which overcomes the problems which tend to occur in application low-NOx burners to coals in which the volatile matter is low in heat content. A gaseous or volatile liquid fuel is introduced into the ignition zone and/or the primary flame immediately downstream of the burner. This fuel will have the same effect as increased quality and quantity of the volatile content of the coal.
    Type: Grant
    Filed: August 25, 1988
    Date of Patent: June 12, 1990
    Assignee: Consolidated Natural Gas Service Company, Inc.
    Inventors: Bernard P. Breen, John H. Pohl, Howard B. Lange
  • Method to enhance removal of sulfur compounds by slag
    Patent number: 4848251
    Abstract: Disclosed is a process for combustion of carbonaceous substances containing ash and sulfur in slagging combustors wherein the fraction of sulfur retained in the slag is enhanced, emissions of nitrogen oxide are reduced, and operating problems with the furnace are avoided. The process comprises control of slag within a temperature range of 2000.degree.-2500.degree. F., slag stoichiometry less than oxidizing, and gas phase stoichiometry near stoichiometric.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: July 18, 1989
    Assignee: Consolidated Natural Gas Service Company
    Inventors: Bernard P. Breen, James E. Gabrielson, John H. Pohl