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http://dx.doi.org/10.12925/jkocs.2006.23.4.5

Liquefaction Characteristics of HDPE and LDPE in Low Temperature Pyrolysis  

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)
Publication Information
Journal of the Korean Applied Science and Technology / v.23, no.4, 2006 , pp. 307-318 More about this Journal
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.
Keywords
HDPE pyrolysis; LDPE pyrolysis; pyrolysis temperature; pyrolysis time;
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