中国电机工程学报2018，Vol.38Issue(3)：840-849,后插19,11.DOI:10.13334/j.0258-8013.pcsee.162585
基于光学诊断技术的煤粉射流火焰着火燃烧特性研究
Pulverized Coal Stream Ignition and Combustion Characteristics Based on Multiple Optical Diagnostic Techniques
摘要
Abstract
An optical entrained flow pulverized coal reactor system simulating the combustion conditions of industrial pulverized coal boiler was employed to study ignition and combustion characteristics of pulverized coal under high temperature. The most important operation parameters, including ambient temperature, ambient oxygen concentration, coal ranks, on pulverized coal (PF) steam ignition were investigated. Ignition delay times of PF stream were achieved from distribution of the overall pulverized coal stream flame light intensity and OH* spontaneous light intensity with optical diagnostic technique. The results show that, the overall flame's and OH* ignition delay time of the bituminous and lignite pulverized coal (53～80μm) stream and the length of the main combustion zone decreases with the increase of ambient oxygen concentration, but OH* ignition delayfalls more slowly; the length of the main combustion zone of the pulverized coal stream flame is longer than the reaction zone expressed by OH* for the longer burning time of char, and they all become shorter with the increase of ambient oxygen concentration. For lignite, in the range of 10％～30％ oxygen concentration ignition delay time is relatively longer than bituminous,but the main combustion zone is shorter.关键词
煤粉/着火/燃烧/射流火焰/光学诊断/携带流反应器Key words
pulverized coal/ignition/combustion/Jet flame/optics diagnose/entrained flow reactor分类
能源科技引用本文复制引用
朱文堃,邹高鹏,张蕾,孙锐,彭江波,于欣..基于光学诊断技术的煤粉射流火焰着火燃烧特性研究[J].中国电机工程学报,2018,38(3):840-849,后插19,11.基金项目
国家自然科学基金重点项目(51536002) （51536002）
国家自然科学基金青年科学基金项目(61405048) （61405048）
国家重大科学仪器设备开发专项项目(2012YQ040164). The Key Project of Natural Science Foundation of China (51536002) （2012YQ040164）
Young Scientists Fund Project of Natural Science Foundation of China (61405048) （61405048）
National Major Scientific Instruments and Equipment Development Projects (2012YQ040164). （2012YQ040164）
