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Project Status: complete

Title: Demonstration of oscillating combustion on a high temperature forging furnace. Final report

Principal Investigator / Author(s): Wagner, John C

Contractor: Institute of Gas Technology

Contract Number: ICAT 99-1

Research Program Area: Emissions Monitoring & Control

Topic Areas: ICAT Grants / Technology, Stationary Sources


An innovative, low-cost technology, Oscillating Combustion, was field demonstrated on a car bottom forging furnace and was found to be able to reduce NOx emissions by up to 49% and reduce fuel usage by up to 3%. Oscillating Combustion involves the creation of successive fuel-rich and fuel-lean zones within the furnace. This is accomplished by installing an oscillating valve on the fuel line to each the burner of a furnace. Since combustion under both fuel-rich and fuel-lean conditions produces low levels of NOx, the NOx formed in each zone is significantly lower than that which would occur if the combustion took place without fuel oscillation but at the same overall average fuel flow rate. Additionally, the increased flame luminosity resulting from the fuel-rich combustion zones combined with the increased turbulence created by the flow oscillations provides increased heat transfer to the furnace load. The technology is applicable to a wide range of high-temperature industrial furnaces such as forging furnaces, glass melters, steel reheat furnaces, aluminum melters, and process heaters, whether they are fired with ambient-temperature air, preheated air, oxygen-enriched air, or oxygen.


For questions regarding this research project, including available data and progress status, contact: Research Division staff at (916) 445-0753

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