Abstract
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.
Highlights
Thermal plasma pyrolysis/gasification is an innovation technology for transforming high calorific waste streams such as organic solid waste into a valuable synthesis gas and a vitrified slag [1,2,3]
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
Spout-fluid bed reactors used for combustion or gasification are reported to overcome the limitation of spouted bed and fluidized bed by providing higher rate of mixing, better solid fluid contact, even fluid flow distribution resulting to the minimization of dead zones, better solid fluid contact, improved mass and heat transfer characteristics [8]
Summary
Thermal plasma pyrolysis/gasification is an innovation technology for transforming high calorific waste streams such as organic solid waste into a valuable synthesis gas and a vitrified slag [1,2,3]. The main difference, lies in the fact that the spouting gas is substituted by a DC plasma jet which discharges in the conical bottom of the reactor. This has the main advantage that the radiation and convection losses from the plasma are recuperated by the solid charge of the reactor giving rise to substantially higher energy efficiencies
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