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裂解塑料的催化剂.pdf
Polymer Degradation and Stability 91 (2006) 517e526
/locate/polydegstab
Thermal degradation of polyethylene and polystyrene
from the packaging industry over different catalysts
into fuel-like feed stocks
* ´
N. Miskolczi , L. Bartha, Gy. Deak
University of Veszpre´m, Department of Hydrocarbon and Coal Processing, Egyetem Street 10, Veszprem H-8200, Hungary
Received 14 October 2004; received in revised form 5 January 2005; accepted 6 January 2005
Available online 6 October 2005
Abstract
Thermal degradation of waste polymers was carried out as a suitable technique for converting plastic polymers into liquid hydrocarbons,
which could be used as feed stock materials. The catalytic degradation of waste plastics (polyethylene and polystyrene) was investigated in
a batch reactor over different catalysts (FCC, ZSM-5 and clinoptillolite). The effects of catalysts and their average grain size on the properties
of main degradation products (gases, gasoline, diesel oil) are discussed. The temperature range of 410e450 C was used in the process. Both
equilibrium FCC catalyst and natural clinoptilolite zeolite catalyst had good catalytic activity to produce light hydrocarbon liquids, and ZSM-5
catalyst produced the highest amount of gaseous products. Gases and liquids formed in cracking reactions were analyzed by gas chromatography.
The liquid products consisted of a wide spectrum of hydrocarbons distributed within the C5eC28 ca
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