| 초록 |
KEPRI has a pilot-scale combustion test facility, which can offer versatile tools to study coal-related impacts on utility boiler operations. The facility, a scale-down model of an existing boiler, consists of all the necessary components for the boiler except steam generation component. Various test probes are installed to monitor pulverizer performance, slagging, fouling, heat transfer, and pollutant emission, etc. Also, it incorporates the advanced boiler technologies such as flue gas recirculation, direct sorbent injection for desulfurization, electrostatic precipitator, and wet scrubber. Flow fields in the furnace can be controlled by varying the swirl number and by changing the burner configurations from single-wall to opposed-wall or corner firing mode. In this paper, combustion test results of blends of bituminous and anthracite coals are presented. In this test, combustion characteristics in terms of unburned carbon, NOx, SOx, fouling, and temperature profile as functions of coal fineness and excess air ratio were evaluated. |
