Abstract: The reactivities of chars were investigated for gasification with steam and carbon dioxide by thermogravimetry in the temperature range of 1100 to 1400℃ and at atmospheric pressure, and the results were compared to those of the previous work at temperatures below 1000℃, where the gasification velocity was chemically controlled. The parent coals of the six char samples differed in rank from brown coal to anthracite and from non-caking coal to strongly caking coal. The rate equation, f=1- exp( -aθb), designated as the modified volume reaction model, was applied to evaluating gasification reactivities using an average rate constant k.

摘要： 选用燃料比(固定碳/挥发份)1到8,变质程度从褐煤到无烟煤(包括粘结性的和非粘结性的)的六种煤焦为试样,在1100—1400℃下,用热重量法进行了含O_2、H_2O、CO_2气化剂的实验室气化,用修正体积反应模型式进行了数据处理和活性评价.并将高温区的结果与低温区(1000℃以下)的实验结果进行了比较.