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生焦与氧化钙焙烧脱硫反应动力学研究 预览 被引量:2

Roasting Desulfurization Kinetics of Coke and Calcium Oxide
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摘要 提出了CaO焙烧生焦脱硫的新方法,考察了焙烧时间、焙烧温度、CaO掺杂比例对生焦脱硫率的影响,利用TG-DSC联合法对样品进行分析,研究了生焦与CaO焙烧脱硫反应的动力学。结果表明,生焦与CaO焙烧脱硫反应活化能E为150.8kJ/mol,指前因子A为6.98×10^11 min^-1,反应机理函数为f(α)=(1-α)^2.54,最佳工艺条件为:焙烧温度1173K,焙烧时间1h,CaO掺杂比例75%;该条件下生焦的脱硫率可达47%,主要产物为CaS、CaCO3。 A new method was used to desulfurization from coke by CaO roasting process.The effects of roasting temperature and roasting time and the ratio of CaO-doped on coke desulfurization rate were studied.TG-DSC method was used to analyze samples,the raw coke with calcium oxide roasting desulfurization reaction kinetics was studied.The results show that activation energy calculated Eas 150.8kJ/mol,pre-exponential factor Aas 6.98×10^11min^-1,the reaction mechanism function as f(α)=(1-α)^2.54.The main roasted products were CaS and CaCO3 in the reaction process.The coke desulfurization rate was more than 47% under the optimized conditions of roasting temperature 1173 K,roasting time 1h,and the ratio of CaO-doped 75%.
作者 董宏静 谢刚 于站良 李荣兴 俞小花 DONG Hongjing, XIE Gang, YU Zhanliang, LI Rongxing, YU Xiaohua(1 Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093; 2 Kunming Metallurgical Research Institute, Kunming 650031)
出处 《材料导报》 CSCD 北大核心 2015年第2期101-104,109共5页 Materials Review
基金 国家自然科学基金(青年基金)(51204084)
关键词 生焦 脱硫 焙烧 动力学 coke desulfurization roasting dynamics
作者简介 董宏静:女,1989午生,硕士生,研究方向为湿法冶金及碳素材料,E-mail:puakdhj@163.com 谢刚:通讯作者,男,1961年生,教授,博导,研究方向为计算冶金和湿法冶金,E-mail:gangxie@163.com
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