Abstract
Heavy automotive tire wastes were pyrolysed in a fixed-bed fire-tube heating reactor system under N2 atmosphere to determine the role of final temperature, feed size, sweeping gas flow rate and heating rate on the product yields and liquid product compositions. Final temperatures studied were 375, 425, 475, 525 and 575°C and the highest liquid product yield was obtained at 475°C for feed size of 4cm3, sweeping gas flow rate of 8 L/min and heating rate 15°C/min. Liquid products were characterized including fuel properties, elemental analyses, FT-IR, 1H-NMR, GC-MS. In addition, boiling point distributions of hydrocarbons in pyrolytic liquids were determined by using simulated distillation curves in comparison with commercial diesel fuel. The analytical results of the product liquids showed that the major compounds in the liquid products were: limonene in large quantities, some long-chain hydrocarbons and small amount of single ring alkyl-aromatics. The fuel properties and simulated distillation results represent that the total pyrolytic liquid can be used as liquid fuel.
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