The beechwood feedstock content with 5e6% moisture was cut into size of 3e5 mm. It was found that the produce gas composition (vol%) was 28.6e30% CO, 7e5.5% CO2, 7e7% H2, 1.8e1.8% CH4, and 55.6e55.7% N2 when the air-to-fuel ratio varied from 1.267 to 1.055.