摘要
为了探索烧结烟气循环流化床燃烧技术的可行性,采用大容量热重分析仪(LC-TGA)研究了左云烟煤、平朔烟煤和钱家营烟煤在低氧(含CO)气氛下的燃烧特性,并研究了CO体积分数对煤粉燃烧的影响。结果表明:低氧气氛下氧气体积分数和反应温度的变化对煤粉燃烧有很大的影响;CO在煤粉燃烧时存在明显的抢氧行为,其能力与温度密切相关,与氧气体积分数关联较小;当反应温度为750℃时,CO燃烧的抢氧能力强于煤粉燃烧,但当温度上升至850℃时,CO燃烧的抢氧能力小于煤粉燃烧。实验所得结果可以为烧结烟气循环流化床燃烧技术的发展提供参考。
In order to explore the feasibility of burning sintering flue gas in circulating fluidized bed(CFB),a large capacity thermogravimetric analyzer(LC-TGA)was used to study the combustion characteristics of Zuoyun bituminous coal,Pingshuo bituminous coal and Qianjiaying bituminous coal in synthetic gas(low oxygen content and contains CO)with similar composition as sintering flue gas.Moreover,the effect of CO volume fraction on the coal combustion of was studied.The results show that,the change of oxygen concentration and combustion temperature will greatly affect the combustion of coal in low oxygen content atmosphere.CO has obvious oxygen grabbing behavior during coal burning,and this ability is closely related to temperature but less related to oxygen volume fraction.At 750℃,the oxygen-grabbing capacity of CO combustion is stronger than that of coal combustion,but when the temperature rises to 850℃,the oxygen-grabbing capacity of CO combustion is weaker than that of coal combustion.The experimental results can provide the reference for further development of sintering flue gas CFB combustion technology.
作者
陶欣
蔡润夏
陈陆剑
张缦
杨海瑞
张守玉
吕俊复
TAO Xin;CAI Runxia;CHEN Lujian;ZHANG Man;YANG Hairui;ZHANG Shouyu;LYU Junfu(Department of Thermal Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Key Laboratory of the Ministry of Education,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)
出处
《热力发电》
CAS
北大核心
2020年第7期55-60,共6页
Thermal Power Generation
基金
国家重点研发计划项目(2019YFE0102100)。
