Temperature and time influence on the waste plastics pyrolysis in the fixed bed reactor
Pyrolysis as a technique of chemical recycling of plastic materials is causing an increasing level of interest as an environmentally and economically acceptable option for the processing of waste materials. Studies of these processes are carried out under different experimental conditions,...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
VINCA Institute of Nuclear Sciences
2016-01-01
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Series: | Thermal Science |
Subjects: | |
Online Access: | http://www.doiserbia.nb.rs/img/doi/0354-9836/2016/0354-98361500154P.pdf |
Summary: | Pyrolysis as a technique of chemical recycling of plastic materials is
causing an increasing level of interest as an environmentally and
economically acceptable option for the processing of waste materials. Studies
of these processes are carried out under different experimental conditions,
in different types of reactors and with different raw materials, which makes
the comparison of different processes and the direct application of process
parameters quite complex. This paper presents the results of investigation of
the influence of temperature in the range of 450°C to 525°C, on the yield of
the process of pyrolysis of waste plastics mixture, composed of 45%
polypropylene, 35% low density polyethylene and 25% high density
polyethylene. Also, this paper presents results of the investigation of the
effect of the reaction, atintervals of 30-90 [min], on the yield of pyrolysis
of the mentioned waste plastics mixture. Research was conducted in a fixed
bed pilot reactor, which was developed for this purpose. The results of the
research show that at a temperature of 500°C, complete conversion of raw
materials was achieved, for a period of 45 [min], with a maximum yield of the
pyrolysis oil of 32.80%, yield of the gaseous products of 65.75% and the
solid remains of 1.46%. Afurther increase of temperature increases the yield
of gaseous products, at the expense of reducing the yield of pyrolysis oil.
Obtained pyrolysis oil has a high calorific value of 45.96 [MJ/kg], and in
this regard has potential applications as an alternative fuel. |
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ISSN: | 0354-9836 2334-7163 |