Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Liquefaction Characteristics of HDPE and LDPE in Low Temperature Pyrolysis

저온 열분해시 HDPE 및 LDPE의 액화 특성

  • Lee, Bong-Hee (Department of Chemical Engineering, Chungbuk National University) ;
  • Park, Su-Yul (Department of Chemical Engineering, Chungbuk National University) ;
  • Kim, Ji-Hyun (Department of Chemical Engineering, Chungbuk National University)
  • 이봉희 (충북대학교 공과대학 화학공학과) ;
  • 박수열 (충북대학교 공과대학 화학공학과) ;
  • 김지현 (충북대학교 공과대학 화학공학과)
  • Published : 2006.12.31
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Abstract

The pyrolysis of high density polyethylene(HDPE) and low density polyethylene(LDPE) was carried out at temperature between 425 and $500^{\circ}C$ from 35 to 80 minutes. The liquid products formed during pyrolysis were classified into gasoline, kerosene, gas oil and wax according to the petroleum product quality standard of Korea Petroleum Quality Inspection Institute. The conversion and yield of liquid products for HDPE pyrolysis increased continuously according to pyrolysis temperature and pyrolysis time. The influence of pyrolysis temperature was more severe than pyrolysis time for the conversion of HDPE. For example, the liquid products of HDPE pyrolysis at $450^{\circ}C$ for 65 minutes were ca. 30wt.% gas oil, 15wt.% wax, 14wt.% kerosene and 11wt.% gasoline. The increase of pyrolysis temperature up to $500^{\circ}C$ showed the increase of wax product and the decrease of kerosene. The conversion and yield of liquid products for LDPE pyrolysis continuously increased according to pyrolysis temperature and pyrolysis time, similar to HDPE pyrolysis. The liquid products of LDPE pyrolysis at $450^{\circ}C$ for 65 minutes were ca. 27wt.% gas oil, 18wt.% wax, 16wt.% kerosene and 13wt.% gasoline.

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References

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