The gasification kinetic modelling of two Victorian brown coal (Yallourn and Maddingley) chars and the validity for entrained flow gasification were investigated in this study. The study was conducted in a thermogravimetric analyzer (TGA) at 750–1100 ℃, 30%–90% CO₂ concentration using different char particle sizes within 20–106 µm. It was found that random pore model and modified volumetric model are applicable for TGA results, but volumetric model and grain model are not. The effect of particle size under 106 µm on gasification rate is very limited. Activation energies of Maddingley char and Yallourn char in CO₂ gasification are 219–220 and 197–208 kJ/mol, respectively. The pre-exponential factors are in the same order of magnitude, and they increased as particle size decreased. A mathematical model was developed to predict carbon conversion over time for entrained flow gasification of Victorian brown coal chars at 1000–1400 ℃.

研究了两种维多利亚女王时代褐煤（Yallourn和Maddingley）煤焦的气化动力学模型以及气流床气化的有效性。这项研究是在热重分析仪（TGA）上于750–1100℃，CO ₂浓度为30％–90％，使用20–106 µm范围内的不同炭颗粒尺寸进行的。发现随机孔模型和修正的体积模型适用于TGA结果，但体积模型和晶粒模型则不适用。106 µm以下的粒径对气化速率的影响非常有限。Maddingley炭和Yallourn炭在CO _2中的活化能气化分别为219–220和197–208 kJ / mol。前指数因子处于相同的数量级，并且随着粒径的减小而增加。建立了数学模型，以预测维多利亚州褐煤炭在1000–1400℃的夹带气流气化过程中随着时间的推移而发生的碳转化。