FPW法测量330MW循环流化床锅炉火焰温度及辐射率  

Measurement of Flame Temperature and Emissivity in a 330 MW CFB Boiler by FPW Method

作　　者：杨豪骏 杨斌[1,2] 何渊[1,2] 蔡小舒[1,2] 

机构地区：[1]上海理工大学颗粒与两相流测量研究所,上海200093 [2]上海市动力工程多相流动与传热重点实验室,上海200093

出　　处：《动力工程学报》2016年第2期123-129,共7页Journal of Chinese Society of Power Engineering

基　　金：上海市科委科研计划资助项目(13DZ2260900);国家自然科学基金重大科研仪器设备专项资助项目(51327803)

摘　　要：基于快速寻峰法(Fast Searching Peak Wavelength,FPW)原理,研制了水冷光纤探针,对某台330MW循环流化床锅炉稀相区不同高度位置的火焰温度及辐射率进行了测量,并采用FPW法处理测量数据,得到了不同测量位置的火焰温度和辐射率.结果表明:在FPW法测量中,可以用煤粉燃烧火焰温度模型,所得到的循环流化床锅炉火焰温度的最大偏差小于6%;火焰温度和辐射率随炉膛高度的增加而降低;与煤粉锅炉相比,循环流化床锅炉的火焰温度低,辐射率高,辐射换热能力强.Based on the principle of fast searching peak wavelength （FPW） method, a water-cooled optical fiber probe was developed to measure the flame temperature and emissivity at different positions in dilute zone of a 330 MW circulating fluidized bed （CFB） boiler, after which the data were processed by FPW method, and subsequently the flame temperature and emissivity at different positions were acquired. Results show that in FPW measurement, the maximum error of flame temperature in CFB boiler would be less than 6 -, if the model of coal-fired boiler is adopted for the flame temperature measurement of CFB boiler; both the flame temperature and emissivity reduce with the rise of furnace height; compared with coal-fired boiler, the CFB boiler has a lower flame temperature, higher emissivity and stronger capability in radiation heat transfer.

关 键 词：快速寻峰法 火焰温度 辐射率 维恩定律 循环流化床 稀相区 

分 类 号：TK31[动力工程及工程热物理—热能工程]