中文摘要：

在自行设计的粉尘云连续吹喷预混燃烧实验系统上，对锆粉云喷射火焰的温度特性开展研究，分析了锆粉云喷射火焰的火焰发射率和温度场分布．采用点温度和场温度相结合的方法得到328．48g／m2、410．35g／m2和483．59g／m33种质量浓度锆粉云喷射火焰的发射率分别为0．20、0．19和0．18，火焰最高温度可分别达到2147．5℃、2248．1℃、2377．8℃．同时发现沿火焰轴向高度上，火焰温度呈升高一降低一小幅回升趋势，温度回升发生在火焰间歇区，最高温度出现在火焰下部距燃烧器出口约5cm处．

英文摘要：

The flame temperature characteristics of multi-tube injection combustion of zirconium-air cloud mixtures were investigated by means of self-designed experimental system of continuance spray combustion of premixing dust cloud. The flame emissivity and the temperature distribution of spray flame of zirconium-air cloud mixtures were analyzed by comparing point temperature with area temperature. The analytical results indicate that the flame emissivity of zirconium-air cloud mixtures with the dust concentration of 328.48 g/m3, 410.35 g/m3, 483.59 g/m3 is 0.20, 0.19 and 0.18, respectively, and the maximum flame temperature is 2 147.5℃, 2248.1 ℃ and 2377.8 ℃, respectively. Experiments also show that the tendency of flame temperature towards the central axis of flame is increase-decrease-slight increase, the slight increase of flame temperature occurrs in the flame intermission area, and the maximum flame temperature occurs at the place about 5 cm centimeters from the outlet of combustion device.