期刊
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
卷 28, 期 4, 页码 659-667出版社
BRAZILIAN SOC CHEMICAL ENG
DOI: 10.1590/S0104-66322011000400011
关键词
Pyrolysis; Waste HDPE; FTIR; GC-MS; Alternative fuel
Thermal degradation of waste plastics in an inert atmosphere has been regarded as a productive method, because this process can convert waste plastics into hydrocarbons that can be used either as fuels or as a source of chemicals. In this work, waste high-density polyethylene (HDPE) plastic was chosen as the material for pyrolysis. A simple pyrolysis reactor system has been used to pyrolyse waste HDPE with the objective of optimizing the liquid product yield at a temperature range of 400 degrees C to 550 degrees C. Results of pyrolysis experiments showed that, at a temperature of 450 degrees C and below, the major product of the pyrolysis was oily liquid which became a viscous liquid or waxy solid at temperatures above 475 degrees C. The yield of the liquid fraction obtained increased with the residence time for waste HDPE. The liquid fractions obtained were analyzed for composition using FTIR and GC-MS. The physical properties of the pyrolytic oil show the presence of a mixture of different fuel fractions such as gasoline, kerosene and diesel in the oil.
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