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박용디젤기관용 SCR 시스템의 NOx 정화율에 관한 연구
최재성(J.S.Choi),조권희(K.H.Cho),이재현(J.H.Lee),이진욱(J.W.Lee),장성환(S.H.Jang),김정곤(J.G.Kim),양희성(H.S.Yang),고준호(J.H.Ko),박준영(K.Y.Park) 한국마린엔지니어링학회 2003 한국마린엔지니어링학회 학술대회 논문집 Vol.2003 No.-
A diesel engine is utilized widely for industry and shipping because of its efficiency. However, diesel engine emits relatively high concentrated air pollution matters, which will become a competitive factor in the shipping as well as industry. In fact, the regulation has been already implemented from the year 2000. Nitrogen oxides (NOx) in particular is the main part of the regulation. IMO NOx levels are generally possible to meet by means of primary on-engine measures so called IMO tuning. But further significant follow-on reductions are likely to require a secondary after-treatment technique.<br/> SCR technology is used almost exclusively for NOx removal in stationary combustion systems. SCR system is currently the only available technology proven at full scale to meet the 90% NOx reduction levels. Accordingly, the use of an SCR system on board ship maybe provides the solution to minimize this primary pollutant without increasing fuel consumption.<br/> In order to develop a practical SCR system for marine application on board ship, a primary SCR system using urea was made. The SCR system was set up on the ship, HANNARA as a test vessel, employed a two-stroke cycle diesel engine as main propulsion, which is a training ship in KMU (Korea Maritime Univ.). The purpose of this paper is to report the results about the basic effects of the above system parameters which is investigated from practical application through its trial use. The preliminary results are presented that the degree of NOx removal depends on some parameters. such as the amount of urea solution added, space velocity, reaction gas temperature and activity of catalyst.<br/>
최재성(J.S.Choi),조권희(K.H.Cho),전효중(H.J.Jeong),진해광(H.K.Jin),임영식(Y.S.Lim) 한국해양대학교 해사산업연구소 1998 海事産業硏究所論文集 Vol.7 No.-
In this paper, the operation performance of De-NOx System for reduction of NOx emission from marine diesel engines, was investigated. The measured data for analysing were obtained from a ship with a emission monitor at sea, which carried hot coil from Pohang in Korea to Pittsburg in U.S.A.. As the results, it seemed that the system performance was good for reducing NOx emission on steady condition. But on transient condition like as during in or out port, it was clear that more improvement should be required for rapid heating method of SCR and transient control system.