摘要
采用热重质谱联用分析技术研究COREX炼铁工艺用煤的热解特性及热解气体产物的生成规律,并且结合COREX熔融气化炉炉内条件考察煤种、升温速率、CO气氛等因素对煤热解行为的影响。研究结果表明:兴隆庄煤和大同煤具有相似的热解特性及气体释放规律,其中煤阶较低的兴隆庄煤热解的质量变化速率大于大同煤。升温速率越大,煤热解的质量变化速率越大,然而对煤热解的最终质量分数影响不大;气体组分的释放速率随升温速率的增大而增大,并且最大释放速率所对应的温度向低温偏移;CO气氛使煤的热解最大质量变化速率降低,同时使二次裂解反应滞后。
The pyrolysis characteristics and gas generation law of the coal used in COREX process were investigated using simultaneous thermogravimetric-mass spectrometric analyzer.Factors influencing on pyrolysis behavior of the coal such as coal rank,heating rate,CO atmosphere were considered.The results show that XLZ coal and DT coal have similar pyrolysis characteristic and gas generation law,but the weight loss rate and gas generation rate of XLZ are greater than that of DT coal,this can attribute to the lower rank of XLZ coal.The higher the heating rate,the greater the weight loss rate and gas generation rate of the coal.However,there is no significant change on the final weight loss.The CO atmosphere leads to the decrease of the maximum weight loss rate and the delay of secondary reaction.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2013年第A01期211-216,共6页
Journal of China Coal Society
基金
国家自然科学基金青年科学基金资助项目(51104193)
