中文摘要：

根据离子势理论将灰分中SiO2、Al2O3、Fe2O3、CaO、MgO、Na2O、K2O等氧化物划分为碱性氧化物、酸性氧化物;根据氧化物含量给出气化煤的熔融温度及黏度预测方法和经验计算公式,对气流床气化炉更换煤种后保障生产稳定运行提出指导性意见。

英文摘要：

In this paper,SiO2,Al2O3,Fe2O3,CaO,MgO,Na2O,K2O and other oxides in the ash are divided into basic oxides and acidic oxides according to the theory of ion potential.The melting temperature and viscosity prediction method and empirical formula of gasified coal are given according to the oxide content,providing guidance for guaranteeing the stable operation and production of entrained flow gasifier after replacing coal.