METHOD AND APPARATUS FOR OPERATING A FUEL FLEXIBLE FURNACE TO REDUCE POLLUTANTS IN EMISSIONS

摘要

A fuel flexible furnace (20), including a main combustion zone (25), a reburn zone (26) downstream from the main combustion zone (25), and a delivery system 30, 110) operably coupled to supplies of biomass and coal and configured to deliver the biomass and the coal as ingredients of first and reburn fuels to the main combustion zone (25) and the reburn zone (26), with each fuel including flexible quantities of the biomass and/or the coal. The flexible quantities are variable with the furnace (20) in an operating condition.