Clean Technology, Vol.9, No.2, 71-79, June, 2003
SCR Pilot Plant 성능실험 및 공정 설계
Process Design and Performance Test of the SCR Pilot Plant
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초록
화력발전소에서 배출되는 질소산화물 제어를 위한 선택적 촉매 환원 공정은 안정적이며 고효율 설계가 가능하여 범용적으로 사용되고 있는 기술이다. 선택적 촉매 환원 공정의 최적 설계를 위해서는 촉매 특성에 따른 설계기술이 정립되어야 하며, 다양한 조건에 대한 설계경험이 필요하다. 본 연구에서는 SCR 공정의 설계자료 도출을 위해 설계/제작된 1,000Nm3/hr급 SCR 파일럿 플랜트를 이용하여 반응온도, NH3/NO 몰비, 공간속도, 선속도 및 압력손실 등의 설계변수에 대한 성능실험을 수행하고, 도출된 실험 결과를 통한 설계과정을 기술하였다.
The selective catalytic reduction (SCR) process is the most widely applied technology for the denitrification of coal-fired power plant flue gases due to its selectivity and high efficiency. In order to attain the optimum design of SCR process, it is required to consider various catalysis characteristics as well as various operating conditions. A systematic study to elucidate the effects of the design conditions(reaction temperature, NH3/NO mole ratio, space velocity and linear velocity) on the reduction of NOx using the SCR pilot polnt with maximum flue gas flow rate of 1,000Nm3/hr was carried out and employed to identify the optimum design parameters. Design approaches of SCR process with test results were also presented.
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