ABSTRACT

In this study one internally heated fixed-bed continuous pyrolysis system has been designed and fabricated. Waste material in the form of car scrap tire was pyrolysed in an internally heated fixed bed pyrolysis reactor. The reactor was 10cm in  diameter and 30cm in height .The feed sizes were 12cm´1cm´1cm,10cm´1cm´1cm, 8cm´1cm´1cm, 8cm´1cm´0.5cm and 8cm´0.5cm´0.5cm. The reactor was heated by means of an electric heater and L P gas burner preheated the purging nitrogen gas. The products were liquid, char and gas. The liquid and char products were collected separately while the gas was flared into atmosphere. A gravity feed type reactor feeder was used to feed the reactor and the solid char was pushed out by compressed air supplied by an air compressor. The liquid product was collected in a series of ice-cooled liquid collectors. The maximum liquid yield was 48% for feed size of 8cm´0.5cm´0.5cm and char yield was 45% for feed size of 12cm´1cm´1cm  for car scrap tire. The condensed pyrolytic oils were analyzed for their physical properties. The heating values of the liquid and char are 41,500 kJ/kg and 35,000 kJ/kg respectively. The result of the analysis shows that the oils are favorable high heating value. From this study it is found that the solid waste tyre may be a potential source of liquid hydrocarbon fuels.  

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