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For combined cycle operations, especially during startup and shutdown, safety concerns have always been the top priority. Residual fuels can escape to and accumulate in the downstream heat recovery steam generator (HRSG) if appropriate purge is not taken, which may cause deflagration, an explosion at subsonic condition, during startup when heat source exists. Residual fuel deflagration will lead to...
In 2010, the New York State Department of Environmental Conservation lowered the Reasonably Available Control Technology (RACT) limits for Oxides of Nitrogen (NOx) for large stationary sources. Compliance with the RACT limits can be achieved by direct application of emission limits on the source, the use of flexibility mechanisms such as switching fuels or participation in an averaging plan, a commitment...
As emissions regulations for coal‐fired power plants become stricter worldwide, layering combustion modification and post‐combustion NOX control technologies can be an attractive option for efficient and cost‐effective NOX control in comparison to selective catalytic reduction (SCR) technology. The layered control technology approach designed in this article consists of separate overfire air (SOFA),...
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