中国电机工程学报Issue(35)：15-20,6.
中国动力煤特性对绝热燃烧温度的影响
Impact of Chinese Power Coal Properties on Adiabatic Combustion Temperatures
摘要
Abstract
The adiabatic combustion temperature of steaming coals, denoted as ta, is one of the most important parameters for thermal calculation of pulverized coal fired boilers. The difference of ta and the flue gas temperature at the exit of the furnace (ta-t'f ) determines the heating power of furnace surfaces, such as water walls and platen superheaters. This paper calculates the adiabatic combustion temperatures of 158 kinds of Chinese steaming coals and discusses the impact of coal properties on ta. Calculation results revealed that with the increase of the low heating value (Qnet,ar=10.84~29.49 MJ/kg), the adiabatic combustion temperature of Chinese steaming coals (ta) rises from 1 458℃ to 1 959℃, and the theoretical adiabatic combustion temperature (ta0) is about 254~352℃ higher than ta. The low heating value (Qnet,ar) has an approximately linear positive impact on ta. For Chinese steaming coals, w(Car) is the most important parameter positively affecting Qnet,ar, and w(Mar) is the most important parameter negatively affecting Qnet,ar. Besides, the excessive air coefficient, denoted as α, which is determined by w(Vdaf) of coal, has a nonlinearly negative impact on ta.关键词
中国动力煤/特性参数/绝热燃烧温度/煤粉锅炉/热力计算Key words
Chinese power coal/property/adiabatic combustion temperature/pulverized coal fired boiler/thermal calculation分类
能源科技引用本文复制引用
王世昌,胡刚刚..中国动力煤特性对绝热燃烧温度的影响[J].中国电机工程学报,2013,(35):15-20,6.基金项目
国家自然科学基金项目(51376061)。@@@@Project Supported by National Natural Science Foundation of China (51376061) （51376061）
