devolatilization. Consequently further production of volatiles will occur in the reduction zone, leading to tar evolution and tar entrainment in the product gas.
Groeneveld (17) takes the time necessary for complete devolatilization to be equal to or larger than the Fourier time for heating up. By making some assumptions about the extension and geometry of the pyrolysis zone, a maximum gasifier load independent of the fuel particle size can be calculated