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A RF (radio frequency) plasma pyrolysis reactor was presented in this paper. Application of this reactor to the pyrolysis treatment of biomass at different operating pressures (3000-8000Pa), with various input powers (1600-2000W) was investigated. Interest was focused on the effect of the pyrolysis conditions on the yield of gas and char, the gas composition as well as the quality of the char. On average, the gas yield can reach 66 wt% of the biomass feed at the input power 1800W and operating pressure 5000Pa. The total content of CO and H 2 in the gas product reached 76 vol.% on a nitrogen-free basis. Thus the utilization efficiency is increased after the biomass is converted into gaseous fuel, which has wider applications such as city gas, burning in utility boilers, gas turbines or gas engines to generate electricity.

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A laboratory-scale plasma spout-fluid bed reactor with a 10 kW DC plasma torch was developed and tested using quartz sand particle and rice hull. The preliminary experimental results including particle recirculation and attrition, bed temperature distribution and stability, as well as biomass gasification system energy balance were presented in this paper. Research results indicated that plasma spout-fluid bed reactor may be a technically feasible reactor for carbonaceous organic material gasification.

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