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Received January 21, 2008
Accepted April 3, 2008
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Wetted Column 반응기를 이용한 폴리스티렌 열분해 반응속도론적 연구
Reaction Kinetic Study on Pyrolysis of Waste Polystyrene using Wetted Column Reactor
한국화학연구원 신화학연구단 환경에너지 센터, 305-600 대전시 유성구 장동 100 1서강대학교 화학공학과, 121-741 서울시 마포구 신수동
New Chemical Research Division, Korea Research Institute of Chemical Technology, 100 Jang-dong, Yuseong-gu, Daejeon 305-600, Korea 1Department of Chemical Engineering, SeoGang University, Sinsudong, Seoul 121-741, Korea
michoi@krict.re.kr
Korean Chemical Engineering Research, June 2008, 46(3), 535-539(5), NONE Epub 7 July 2008
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Abstract
폐EPS 열분해반응으로부터 원료인 스티렌모노머로 회수하는 열분해반응에서 오일의 생성 및 오일 중에 함유된 스티렌, 에틸벤젠, 알파메틸스티렌의 생성은 반응중에 생성되는 잔류물의 영향을 받으며 원하는 조건에서 반응의 진행이 어려우므로 반응중에 생성되는 잔류물의 영향을 받지않는 새로운 반응기를 개발하였다. 본 연구에서는 열분해 과정에서 주입되는 원료가 회분식반응기와 달리 반응 중 생성되는 잔류물의 영향을 받지 않고 일전한 온도가 유지되는 원료가 벽을 통해 흐르는 새로운 형태의 wetted-wall형 반응기를 사용하여 반응온도, 생성오일의 배출을 쉽게 하기 위해 주입되는 질소 유량 등의 변수들을 고찰하였다. 또한 반응으로부터 선정된 최적조건에서 반응기 설계를 위한 반응속도론적 연구를 수행하였다.
Conversion to oil, yield of styrene and formation of side products such as α-methyl styrene, ethyl benzene, benzene, toluene, dimer and trimer were affected by residue formed during thermal degradation. Also, control of reaction temperature had a difficulty at the first stage. Thus, new reaction system using wetted-wall type reactor was proposed and examined on various parameters such as reaction temperature, feeding rate and removal velocity of formed vapor. Optimun condition was obtained from continuous thermal degradation using wetted-wall type reactor and reaction kinetic study was carried out at new type reactor.
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