Operating Experience with High Efficiency Emissions Reduction System for Biomass Boilers

There is a need for today’s power plants to meet the growing demand for electricity while achieving efficient combustion, low emissions, and no net CO2 releases to the environment. Biomass boilers equipped with new combustion techniques to enhance efficiency resulting in lower heat rates, as well as new, proven emissions control devices to significantly reduce NOx and CO emissions, have been developed to meet this need. This paper will discuss a new, patented emissions control technology advancements using a system called the “RSCR ® ”, which is a selective catalytic device applied to the relatively cold gas (after the boiler and particulate removal equipment) prior to its discharge to the stack, with NOx reductions of >70% and CO reductions >50% achieved. The paper will describe the overall performance of a typical biomass boiler plant using this new technology. The paper will also provide actual operating data on the RSCR, which has been retrofitted to three existing biomass fired unit.