Hybrid oxidant combustion method

Patent 5242296 Issued on September 7, 1993. Estimated Expiration Date:

December 8, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Fluidized-bed calciner with combustion nozzle and shroud
Patent #: 4017253
Issued on: 04/12/1977
Inventor: Wielang , et al.

Oxygen aspirator burner for firing a furnace
Patent #: 4541796
Issued on: 09/17/1985
Inventor: Anderson

Melting glass with port and melter burners for NO_x control
Patent #: 4599100
Issued on: 07/08/1986
Inventor: Demarest, Jr.

Glassmelting method with reduced nox generation
Patent #: 4973346
Issued on: 11/27/1990
Inventor: Kobayashi

Multi-stage combustion chamber for combustion of nitrogen-containing gas with reduced NO_x emissions, and method for its operation
Patent #: 5002483
Issued on: 03/26/1991
Inventor: Becker

Segregated zoning combustion
Patent #: 5076779
Issued on: 12/31/1991
Inventor: Kobayashi

Combustion process
Patent #: 5085156
Issued on: 02/04/1992
Inventor: Dykema

Method for reducing the flame temperature of a burner and burner intended therefor
Patent #: 5104310
Issued on: 04/14/1992
Inventor: Saltin

Auxiliary oxygen burners technique in glass melting cross-fired regenerative furnaces Patent #: 5147438
Issued on: 09/15/1992
Inventor: Castelain, et al.

Inventors

Assignee

Praxair Technology, Inc.

Application

No. 986833 filed on 12/08/1992

US Classes:

431/10, Oxidizer added to region of incomplete combustion431/190Water, air or steam feeder spaced from disperser

Examiners

Primary: Dority, Carroll B.

Attorney, Agent or Firm

Ktorides; Stanley

International Class

F23M 003/04

Abstract

A combustion method employing two different oxidants wherein the first oxidant incompletely combusts fuel and a second oxidant having a higher oxygen concentration completes the combustion in a defined manner which reduces NOx generation.