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BURNER CRITERIA FOR NOX CONTROL. VOLUME 3. HEAVY-OIL AND COAL-FIRED FURNACES AND FURTHER FURNACE INVESTIGATIONS
Citation:
Heap, M., T. Lowes, R. Walmsley, H. Bartelds, AND P. LeVaguerese. BURNER CRITERIA FOR NOX CONTROL. VOLUME 3. HEAVY-OIL AND COAL-FIRED FURNACES AND FURTHER FURNACE INVESTIGATIONS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-84/015B.
Description:
The report describes the third phase of a research program with the overall objective of specifying burner design criteria for minimum pollutant emissions from both pulverized-coal- and residual-fuel-oil-fired combustors. A distributed mixing burner was developed, and its potential for NOx control was evaluated for different fuels. The burner produces a fuel-rich zone that reduces the conversion of fuel nitrogen species to NOx. Injecting additional air from outboard ports completes fuel oxidation. It was postulated that achievable NOx control depended on nitrogen volatility and oxygen content. This was confirmed by burning coal, a low volatile petroleum coke, heavy fuel oil, and a heavy fuel oil/water emulsion. A television pyrometer flame diagnostic technique that was evaluated gave promising results.