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미립화와 환경 2 : 대형 경유트럭의 휘발성유화합물(VOCs) 배출특성 연구
문선희 ( Sunhee Mun ),이종태 ( Jihwan Son ),손지환 ( Gyutae Park ),박규태 ( Heungmin Yoo ),유흥민 ( Changwan Yun ),윤창완 ( Jeongsoo Kim ),김정수 ( Jongtae Lee ) 한국액체미립화학회 2015 한국액체미립화학회 학술강연회 논문집 Vol.2015 No.-
WHO(World Health Organization) IARC(International Agency for Research on Cancer) has issued to consider diesel engine exhaust gas as an one of HAPs which has carcinogenic for human(Group 1). In this study, it was conducted to evaluate variety characteristics on changing of VOCs by aftertreatment systems, and the heavy duty diesel trucks were chosen as experimental vehicles. The results of the VOCs emission characteristics according to aftertreatment systems showed that compared to vehicles equipped with DPF, the vehicles equipped with SCR had 12.3%, 15.1%, 27.8%, and 22.2% lower BTEX emissions of Benzene, Toluene, Ethylbenzene, and Xylene, respectively. The emissions per pollutants were in the order of Toluene > Xylene > Ethylbenzene > Benzene > Styrene, and Toluene had the highest levels of emissions at 16.25 mg/km and 13.80 mg/km, respectively, for the vehicles equipped with DPF and SCR. The results of emission characteristics from vehicle speed, when the vehicle was operated at low speeds below 10.6 km/h, showed that due to incomplete combustion, emission was 75% higher. The results of analyzing the correlation between THC and BTEX showed a proportionate correlation with the rate of change of the emissions. As a result of analyzing the BTEX/THC ratio(%) for each of vehicle speed, Toluene was shown to have the highest proportion, and BTEX took up about 19.1% of the THC.