An Experimental Study on Slagging/Fouling Characteristics for Various Coals in a 50kWth Pulverized Coal Combustion System
50kWth미분탄 연소 시스템에서 탄종별 슬래깅 및 파울링 특성 연구
Abstract
In Korean coal power plants, rising coal prices have recently led to the rapid utilization of low lank coals such as sub-bituminous coal with low calorific values and low ash fusion temperatures. Using these coals beyond the design range has resulted in important issues including slagging and fouling, which cause negative effects in boiler performances and unstable operations. The purpose of this study is to observe slagging and fouling characteristics resulted from burning various ranks of pulverized coals. We have tested 3 different coals: FLAME(bituminous), KCH(sub-bituminous) and MOOLARBEN(bituminous)coals in the pilot system