Production of Liquid Fuel from Pyrolysis of WasteTires

Worldwide energy crisis forced the researchers to explore for new and alternate sources of energy. For the developing countries this problems are acute. Generation of any kind of waste is a problem to the environment. Some wastes have the characteristics of producing energy by different thermochemical conversion. In the present work, waste tires were pyrolysed in a fixed bed reactor. The influences of pyrolysis temperature, heating rate, operating time, sample size etc. on yield were investigated. The pyrolysis of tire was carried out within the temperature range of 300oC to 600oC. The optimum pyrolytic oil of 42.0% was obtained for tire pyrolysis at 450oC. Higher temperature and smaller particle size increases the heating rate that resulting a decreased char yield. The cracking of hydrocarbons, resulting increased H2 content in the gaseous product, is favored by a higher temperature and smaller particle size. The physical properties of the pyrolytic oil were examined. The oil obtained was analyzed for their fuel properties compared with other petroleum products. The density and viscosity of the liquid was 935.1 kg/m 3 and 6.95 cSt at 40°C, respectively. The higher calorific value of the liquid was about 37.98 MJ/kg. The properties of pyrolytic liquid were much closer to that of conventional furnace oils. It could be concluded that pyrolysis of waste tires may be a potential source of alternative fuels.