Liquefaction Characteristics of Polypropylene-Polystyrene Mixture by Pyrolysis at Low Temperature

Polypropylene-Polystyrene 혼합물의 저온 열분해에 의한 액화특성

  • Received : 2010.01.28
  • Accepted : 2010.03.05
  • Published : 2010.03.31


The low temperature pyrolysis of polypropylene (PP), polystyrene (PS) and polypropylene-polystyrene (PP-PS) mixture in a batch reactor at the atmospheric pressure and $450^{\circ}C$ was conducted to investigate the synergy effect of PP-PS mixture on the yield of pyrolytic oil. The pyrolysis time was varied from 20 to 80 mins. The products formed during pyrolysis were classified into gas, gasoline, kerosene, gas oil and heavy oil according to the petroleum product quality standard of Ministry of Knowledge Economy. The analysis of the product oils by GC/MS(Gas chromatography/Mass spectrometry) showed that new components were not detected by mixing of PP and PS. There was no synergy effect according to the mixing of PP and PS. Conversions and yields of PP-PS mixtures were linearly dependent on the mixing ratio of samples except for heavy oil yields. Heavy oil yields showed almost constant regardless of the mixing ratio.


Polypropylene;Polystyrene;Synergy effect;Pyrolysis;Yield


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