After steady state operation was achieved a small amount of clean and cooled gas was supplied into the gas analyzer. The gas analyzerwas pre-calibrated using a standard mixture of gas (N2, CO, CO2, H2, C2H6, and CH4) and the inert gas (Helium) every three days in order to improve its accuracy. The gas compositions were recorded every 10 s when Tpeak fluctuationwas less than 10 C by the gas analyzer when gasifier reached steady state