Design of fluidized bed reactor for conversion of biomass energy in to concentrated gaseous fuel

Gasification can be employed to convert dilute biomass energy source in to gaseous products holding concentrated form of energy. A practical design of a pilot scale fluidized bed gasifier was developed in order to exploit the energy values of rice husk. The chemical composition, heating value, mean particle diameter, solid and bulk densities were obtained in characterization tests. These data along with the theoretical information available in literature were used for designing the gasifier. Out of the four feedstocks considered rice husk was selected as fuel. The gasifier has a reaction chamber of diameter 0.15 meter and an overall height of 1.45 meter, which is intended to produce a power of 7.5 kilowatt.