摘要
利用热重分析仪、差热分析仪和质谱仪研究了低反应性焦炭和高反应性焦炭与CO_(2)、球团矿和块矿的反应特性,从吸热角度探讨了焦炭反应性存在差异的原因。结果表明,高反应性焦炭比低反应性焦炭更容易与CO_(2)、球团矿和块矿发生反应。低反应性焦炭的碳原子脱离焦炭分子结构消耗的能量较高,需要吸收更多的能量来打破焦炭分子结构,进而发生化学反应。高反应性焦炭消耗的能量较低,碳原子容易从焦炭分子上脱落,因此化学反应温度低,反应更均匀。
Two kinds of coke were chosen to study the reaction characteristics with CO_(2),pellet and lump ore,i.e.coke A represents low CRI coke and coke B for high CRI coke.The reasons for the difference of coke reactivity are discussed from perspective of heat absorption.The results show that high reactivity coke B is easier to react with CO_(2),pellet and lump ore than low reactivity coke A.When the carbon atoms of low reactivity coke separate from the molecular structure,more energy is consumed.More energy is needed to absorb so as to break the molecular structure and trigger chemical reaction.The energy consumption of high reactivity coke B is low,carbon atoms are easier to separate from coke moleculars.As a result,this chemical reaction is characterized with low temperature and uniform reaction.
作者
吕青青
田永胜
王光辉
董威
任华伟
LüQingqing;Tian Yongsheng;Wang Guanghui;Dong Wei;Ren Huawei(School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials,Wuhan 430081,China;Coal Research Institute,Hebei CNC Risun Energy Limited,Xingtai 054001,China)
出处
《燃料与化工》
2021年第5期7-11,61,共6页
Fuel & Chemical Processes
基金
国家重点研发计划专项资助(2017YFB0304300&2017YFB0304303)。
关键词
焦炭反应性
矿石
热重分析
差热分析
Coke Reactivity Index
Iron ore
Thermo-gravimetry
Mass spectrometry analysis
