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Received January 18, 2007
Accepted April 11, 2007
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Wetted-Wall Column 형 반응기를 이용한 폐 EPS 연속 열분해반응
The Continuous Pyrolysis of Waste Polystyrene using Wetted-Wall Type Reactor
충남대학교 화학공학과, 305-764 대전시 유성구 궁동 220 1한국화학연구원 신화학연구단 환경에너지센터, 305-600 대전시 유성구 장동 100
Department of Chemical Engineering, Chungnam National University, 220, Gung-dong Yuseong-gu, Daejeon 305-764, Korea 1New Chemical Research Division, Korea Research Institute of Chemical Technology, 100, Jang-dong, Yuseong-gu, Daejeon 305-600, Korea
mjchoi@krict.re.kr
Korean Chemical Engineering Research, August 2007, 45(4), 396-399(4), NONE Epub 28 August 2007
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Abstract
폐 EPS 열분해반응으로부터 원료인 스티렌모노머를 회수하는 반응과정에서 오일의 생성과 스티렌모노머, 에틸벤젠, 알파메틸스티렌 및 dimer와 같은 오일의 조성은 반응 잔류물에 큰 영향을 받으므로 새로운 반응기의 개발을 위한 연구를 수행하였다. 본 연구에서는 회분식반응기와 달리 주입되는 원료가 벽을 통해 흐르면서 반응하고 생성되는 잔류물은 연속적으로 외부로 배출됨에 따라 생성오일의 조성에 영향을 주지 않도록 고안한 새로운 형태의 wetted-wall 형 반응기를 제안하였다. Wetted-wall 형 반응기를 이용하여 반응온도, 원료주입속도를 비롯하여 반응기 내부의 증발가스를 배출시키기 위해 주입되는 질소 유량 등의 변수들을 고찰하였다. 또한 반응으로부터 선정된 최적조건으로부터 연속운전을 수행하여 스티렌모노머의 수율은 65% 이상의 일정한 수준으로 유지되는 결과를 얻었다.
Organic residue and carbonized solid producing from the thermal degradation gave a influence on oil conversion, formation of styrene and side products such as α-methyl styrene, ethyl benzene, dimer. Thus, new reaction system using wetted-wall type reactor was proposed and examined on influence of various parameters such as reaction temperature, feeding rate and removal velocity of formed vapor. Optimum condition were obtained from continuous thermal degradation using wetted-wall type reactor and styrene was continuously obtained as the yield up 65%.
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