플라즈마 산화와 암모니아 SCR 복합탈질공정의 엔진적용 연구
A Study on a Combined DeNOx Process of Plasma Oxidation and NH3 SCR for Diesel Engine
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Abstract
The technique of NH3 SCR (selective catalytic reduction) assisted by plasma oxidation has been applied to a 2,000 cc diesel engine. The present combined deNOx process consists of two steps. The first step is that about 50% of emitted NO from the engine is oxidized to NO2 in a plasma oxidation process. The second step is that NO and NO2 are simultaneously reduced to N2 in the NH3 SCR process. The engine test results showed that the deNOx rates of the present combined process are higher than those of conventional SCR process by 20%. Such a high performance of the combined process is noticeable especially, when the exhaust temperature are relatively low, i.e., 170 - 220 ℃. To provide a feasibility of the present technique the effects of operating conditions, such as an electrical input energy, an exhaust gas temperature, an initial NO concentration, and the amount of hydrocarbon addition, were discussed.
참고문헌 (19)
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