ABSTRACT

A severe scarcity of energy both in the form of electrical energy and fuel is been uprising day by day along with the deterioration of the major natural resource of Bangladesh, natural gas. This lead to necessities of development on renewable energy rather than conventional sources of energy. It has been a great development in the field of biomass solid wastes. But attention has to be given in the recycling of organic solid wastes as it involves more hazard effects on the environment. Fixed bed pyrolysis system is more attractive among various thermo chemical conversion processes because of its higher conversion capability of solid wastes into liquid fuel. The conversion of organic solid tires wastes, which are found in abundance locally into pyrolytic oil by fixed-bed fire-tube heating reactor, has been taken into account in this study. Solid wastes of different sizes were pyrolized in an internally 30 cm height and 10 cm diameter fixed-bed fire-tube pyrolysis reactor. The reactor was heated by two electric heater coils of 1000Watt capacity each. Nitrogen was used as carrier gas which was preheated in the pre heater by a LP gas burner. The products were oil, char and gas. The parameters varied were temperature and feed size. These parameters were found to influence the product yields significantly. The maximum liquid yields were 65, 60 and 50wt% of motorcycle, bicycle and rickshaw tire wastes respectively all at 475⁰C and for tire feed size of 8cm X 1cm X 1cm.The pyrolytic oil obtained at these optimum process conditions were analyzed for their properties as an alternative fuel and compared with petroleum products. 

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