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Received March 27, 2009
Accepted May 4, 2009
Available online June 29, 2009
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폐 농업용 비닐 수지에서 연료유 생성을 위한 원료 수지의 열분해 반응에서 제올라이트계 촉매의 영향
The Effects of Zeolite-Type Catalysts on the Pyrolysis Reaction of Raw Material Resin to Produce Fuel-Oil from Waste Vinyl
경상대학교 생명화학공학과 공학연구원, 660-701 경남 진주시 가좌동 900
Department of Chemical & Biological Engineering/Engineering Research Institute, Gyeongsang National University, 900 Gajwa-dong, Jinju 660-701, Korea
Korean Chemical Engineering Research, June 2009, 47(3), 303-309(7)
https://doi.org/NONE
https://doi.org/NONE
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Abstract
폐 농업용 비닐을 이용한 연료유 생산 공정을 위한 저밀도폴리에틸렌(LDPE)과 에틸렌비닐아세테이트(EVA) 수지에 대한 열분해 반응 실험을 하였다. 질소 분위기에서 상온에서 650 ℃까지의 비등온 조건에서의 열분석기(열중량분석기, 시차주사열량계)와 420 ℃의 배치형 반응기에서 무촉매 반응과 천연제올라이트, FCC 촉매, 폐 FCC 촉매, 중국 촉매(촉매 A) 등의 제올라이트계 촉매를 사용한 열분해가 행하여졌다. TGA 실험에서 무적제가 첨가된 EVA 수지는 열분해 개시 온도가 250 ℃ 근처로 매우 낮아졌으나, 황토와 장수제 첨가는 열분해를 다소 지연시켰다. LDPE에서 제올라이트 계열 촉매는 촉매 A>폐 FCC 촉매>천연제올라이트>LDPE의 순으로 열분해 반응속도를 높이는데 유효하였다. EVA에서 제올라이트 계열 촉매 첨가 시는 폐 FCC 촉매>천연제올라이트>촉매 A>EVA 수지의 순으로 열분해 반응을 촉진시켰다. DSC 실험에서 제올라이트 계열 촉매 첨가 시 촉매 A>폐 FCC 촉매>천연제올라이트>LDPE의 순으로 융해개시 온도와 열분해열이 낮아졌다. 회분식 실험에서 천연제올라이트 첨가 시 시료 중 가장 높은 액상의 연료유 생성 수율을 얻었다.
The effects of zeolite type catalysts addition on the thermal decomposition of low density polyethylene(LDPE) and ethylene vinyl acetate(EVA) resin have been studied in a thermal analyzer(TGA, DSC) and a small batch reactor. The zeolite type catalysts tested were natural zeolite, FCC catalyst, used FCC catalyst, and catalyst A. As the results of TGA experiments, addition of antifogging-agent decreased the pyrolysis point to 250 ℃, but addition of longevity-agent and clay reduced the pyrolysis rate in EVA resin. Addition of the zeolite type catalysts in the LDPE resin increased the pyrolysis rate in the order of catalyst A > used FCC catalyst > natural zeolite > LDPE resin. Addition of the zeolite type catalysts in the EVA resin increased the pyrolysis rate in the order of used FCC catalyst > natural zeolite > catalyst A > EVA resin. In the DSC experiments for LDPE resin, addition of zeolite type catalysts decreased the melting point and the heat of pyrolysis reaction in the order of catalyst A > used FCC catalyst > natural zeolite> LDPE resin. In the batch system experiments, the mixing of natural zeolite enhanced the yield of liquid fuel oil.
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Sakata Y, Uddin MA, Muto A, Journal of Analytical and Applied Pyrolysis, 51, 135 (1999)
Uddin MA, Koizumi K, Murata K, Sakata Y, Polymer Degradation and Stability, 56, 37 (1997)
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Manos G, Yusof IY, Papayannakos N, Gangas NH, Ind. Eng. Chem. Res., 40(10), 2220 (2001)
Bak YC, Choi JH, Kim NK, J. of KSEE, 28, 596 (2006)
Gobin K, Manos G, Polymer Degradation and Stability, 83, 267 (2004)
