Abstract
배연탈황 기술은 화력발전소의 연소가스에서 발생하는 <TEX>$SO_2$</TEX>를 제거하는 기술이다. 발전소에서는 주로 석회석을 이용한 습식 배연탈황공정을 적용하고 있으나, 천연자원인 석회석의 고갈 및 높은 운전동력 소비 등의 문제로 석회석을 대체할 수 있는 흡수제 개발에 매진하고 있다. 따라서 본 연구에서는 제철소에서 발생하는 석회석 슬러지를 흡수제로 적용하기 위해 석회석 슬러지의 입도분포에 따른 탈황성능을 검토하고자 하였다. 탈황효율 검토방법으로는 입도에 따른 석회석 슬러지의 물리 화학적 특성 검토 및 <TEX>$SO_2$</TEX>가스제거시험 등을 시행하였다. Flue gas desulfurization(FGD) is the technique to remove <TEX>$SO_2$</TEX> gas from stack gases of coal-fired plants. Many researcher have studied to replace the desulfurizing agent because FGD systems use a lot of limestone and energy. In this study, we use the limestone sludge which is a by-product of steel industry in order to replace desulfurizing agent of FGD system by control the particle size of limestone sludge. And desulfurization performance test is implemented by investigating <TEX>$SO_2$</TEX> gas removal properties upon the characteristic of the limestone sludge with various particle size.
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