Abstract
The steam reforming to produce hydrogen from the oils derived from the waste plastics such as polyolefins has been investigated. The polyethylene oil and the polystyrene oil were produced by the decomposition of each plastic pellets at relatively low temperature (350-450°C). The experiments of steam reforming of these oils were carried out at the temperature from 650°C to 850°C using commercial Ni/Al2O3 catalyst. Gas yield, gas composition, carbon conversion and coking characteristic were investigated. Both oils from polyethylene and polystyrene were well gasified with very high carbon conversions and low coking rates at the temperatures higher than 800°C. The gas compositions were well agreed with the calculated equilibrium compositions. The coking rate of polyethylene oil was less than that of polystyrene oil and the coking rate was the lowest at 800°C
