Laboratory-scale entrained gasification tests with a Kideco high-volatile bituminous pulverized coal were performed at atmospheric pressure to assess the influence of coal feed rate, air flow rate, swirl number. A water-cooled sampling probe was used to collect gas samples, which were analysed by Gas Chromatography to measure the concentrations of $H_2$, $O_2$, $N_2$, $CH_4$, CO, $CO_2$, $C_2H_2$. R-type thermocouple was used to create the temperature contour of the flame. A higher specific ratio increased the amount of carbon monoxide and hydrogen, which resulted in an increase of CO/$CO_2$ ratio. At high specific ratio, oxygen was consumed more rapidly. Swirl increased the mixing between oxygen and coal particle, raised the temperature of the flame, and shifted the combusting zone upward. But the effect of swirl was decreased when specific ratio was increased. Formation of carbon monoxide and hydrogen showed little dependece on the amount of coal feed rate or air flow rate. Correlation of results shows that the most important factor on gasification is coal-air specific ratio.
