Low Temperature Energy Conversion of Rice Hulls

Combustion of a carbonaceous fuel includes a pyrolytic component. Pyrolysis takes place when the fuel is heated to a temperature between 250–500°C. At these temperatures, the carbonaceous fuel will begin releasing its so-called volatile components. The pyrolysis process can be characterized as the first stage of combustion. This stage takes place at relatively low temperatures of 250–500°C. Pyrolysis is not limited to solid fuels. A diffusion flame of producer gas from rice hull gasification and a schematic sketch of the flame is shown in Figures 8-1 and 8-2.