In the pyrolysis section steady state, temperature ranged between
that of the hot combustion surfaces and that of the cold unreacted
core from 1185 °C in the combustion zone to 400 °C in the drying
zone. Eqs. (2), (3), (4) and (5) were tested by estimating the pyrolysis
time, fuel velocity and length of reaction zone has excellent fit for the
theoretical and practical results. The different conditions for gasifier
operation are as shown in Table 4.