论文部分内容阅读
一、引言发热量是发电、供热用煤的一个重要质量指标。锅炉燃烧过程中的热平衡、耗煤量、热效率的计算都离不开原煤的发热量,因此确定发热量数值是煤质分析中的一个主要项目。迄今为止,煤的发热量的测定方法是在一个通称为氧弹的密闭的容器中,在有多余的氧存在的条件下,点燃适量的煤样并使之完全燃烧,放出的热量用水吸收,由水温的升高来计算求取。
First, the introduction of heat is power generation, heating coal is an important quality indicators. The heat balance, coal consumption and thermal efficiency in the process of boiler combustion are all inseparable from the calorific value of raw coal, so determining the calorific value is a major project in coal quality analysis. To date, the calorific value of coal has been determined by igniting an appropriate amount of coal sample and burning it completely in the presence of excess oxygen in a closed container called an Oxygen bomb, with the heat released being absorbed by water, Calculated from the rise in water temperature to calculate.