Patents by Inventor Marvin E. Tester

Marvin E. Tester 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).

  • Patent number: 6524356
    Abstract: A process and apparatus for the production of reformed gases. Natural gas and/or liquid hydrocarbons and oxygen are combusted in a first stage to produce carbon dioxide and water. The products of combustion are conveyed to a second stage. Reforming gas or atomized liquid hydrocarbons and oxygen are injected into the second stage and mixed with the products of combustion to react with the carbon dioxide and water to produce carbon monoxide and hydrogen. The process and apparatus are particularly adapted for use in supplementing the reform gases produced in a Direct Reduced Iron plant wherein iron ore is reduced to iron inside a shaft furnace. The process and apparatus may also be used to provide heated enrichment natural gas or liquid hydrocarbons for use as a source of carbon in the shaft furnace to provide for carburization of the iron. Additionally, the process and apparatus may be used as a process control device for controlling the temperature of the reformed gases flowing to the shaft furnace.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: February 25, 2003
    Assignee: Midrex Technologies, Inc.
    Inventors: Donald J. Fournier, Marvin E. Tester, Gregory D. Hughes
  • Publication number: 20020050097
    Abstract: A process and apparatus for the production of reformed gases. Natural gas and/or liquid hydrocarbons and oxygen are combusted in a first stage to produce carbon dioxide and water. The products of combustion are conveyed to a second stage. Reforming gas or atomized liquid hydrocarbons and oxygen are injected into the second stage and mixed with the products of combustion to react with the carbon dioxide and water to produce carbon monoxide and hydrogen. The process and apparatus are particularly adapted for use in supplementing the reform gases produced in a Direct Reduced Iron plant wherein iron ore is reduced to iron inside a shaft furnace. The process and apparatus may also be used to provide heated enrichment natural gas or liquid hydrocarbons for use as a source of carbon in the shaft furnace to provide for carburization of the iron. Additionally, the process and apparatus may be used as a process control device for controlling the temperature of the reformed gases flowing to the shaft furnace.
    Type: Application
    Filed: December 7, 1999
    Publication date: May 2, 2002
    Inventors: DONALD J. FOURNIER, MARVIN E. TESTER, GREGORY D. HUGHES
  • Patent number: 5997596
    Abstract: A process and apparatus for the production of reformed gases. Natural gas and oxygen are combusted in a first stage to produce carbon dioxide and water. The products of combustion are conveyed to a second stage. Reforming gas and oxygen are injected into the second stage and mixed with the products of combustion to react with the carbon dioxide and water to produce carbon monoxide and hydrogen. The process and apparatus are particularly adapted for use in supplementing the reform gases produced in a Direct Reduced Iron plant wherein iron ore is reduced to iron inside a shaft furnace. The process and apparatus may also be used to provide heated enrichment natural gas for use as a source of carbon in the shaft furnace to provide for carburization of the iron. Additionally, the process and apparatus may be used as a process control device for controlling the temperature of the reformed gases flowing to the shaft furnace.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: December 7, 1999
    Assignee: Spectrum Design & Consulting International, Inc.
    Inventors: Mahendra L. Joshi, Donald J. Fournier, Jr., Marvin E. Tester
  • Patent number: 5222447
    Abstract: A process and apparatus for combustion of carbon black enriched gaseous hydrocarbon fuels in which carbon black particles are entrained in a carrier fluid and injected through a center nozzle of a fluid injector into a combustion chamber, the fluid injector having an outer nozzle concentrically disposed around the center nozzle forming an annular chamber between the center nozzle and the outer nozzle through which at least a first portion of a gaseous hydrocarbon fuel is injected into a combustion chamber forming a carbon black enriched gaseous hydrocarbon fuel. The carbon black enriched gaseous hydrocarbon fuel is subsequently mixed with combustion air and burned producing a highly luminous flame.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: June 29, 1993
    Assignee: Combustion Tec, Inc.
    Inventors: Mahendra L. Joshi, Marvin E. Tester