Operation Analysis of Cofiring Wood Biomass Based on 330MWe PC Boiler

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Abstract

The purpose of this research is to analyze operating parameters and flue gas emissions of 330 MWe coal fired power plant Pulverized coal boiler type on cofiring test, using wood biomass based, compared to low range coal firing operation. Wood biomass based was chosen because it is most widely available and has great potential to reduce emission and achieve the target of increasing NRE. The biomass percentage for coal substitution is 5% wood pellets and 5% sawdust. Each scenario was tested at a load of 310 MW gross for 6 hours of operation. Direct cofiring was used in this experiment. Coal and Biomass blended at the coal yard, then through the fuel feeder enters to the pulverized mill evenly to be burned in all positions of furnace burner. The main operating parameters of the biomass cofiring test are mill current, mill outlet temperature, Furnace Exit Gas Temperature (FEGT) and unburned carbon. The environmental impact analyzed are SO2 and NOX emission on exhaust gas.

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