摘要
针对CO还原NO动力学反应的发展现状,本文分析了煤中灰物质的主要成分(Fe_(2)O_(3),CaO/MgO,Al_(2)O_(3),SiO_(2)等)对此还原反应的催化活性特征,同时考虑温度和压强对反应转化率的影响,本文进一步确定了NO-CO还原反应动力学参数.结果表明,相同实验条件下,灰成分的存在有效降低了还原反应过程中的活化能,从而增加了反应效率,实现了高效低氮燃烧.其中Fe_(2)O_(3)催化活性尤为显著,CaO对NO的转化率随温度的升高先增大后减小,而SiO_(2)和Al_(2)O_(3)在反应中视为惰性组分.经综合分析,这种从源头上减少NO_(x)排放含量的催化还原脱硝方法具有很好的应用前景.
Based on the development status of kinetic reaction of CO reduction of NO,this paper analyzed the catalytic activity characteristics of the main components of coal ash(Fe_(2)O_(3),CaO/MgO,Al_(2)O_(3),SiO_(2),etc.)for this reduction reaction.Meanwhile,as temperature and pressure affect the reaction conversion,it also further determined the kinetic parameters of NO-CO reduction reaction.The results show that under the same experimental conditions,ash can effectively reduce the activation energy in the reduction reaction process,thus increasing the reaction efficiency and achieving high efficiency and low nitrogen combustion.The catalytic activity of Fe_(2)O_(3)is particularly significant,and the conversion rate of CaO for NO first increases and then decreases with the increase of temperature,while SiO_(2)and Al_(2)O_(3)are treated as inert components in the reaction.The comprehensive analysis indicates that the catalytic reduction denitrification method has very bright application prospects.
作者
郭强
吕艳玲
马宏宇
李永庆
GUO Qiang;LÜYan-ling;MA Hong-yu;LI Yong-qing(Lüyuan Institute of Energy&Environmental Science and Technology,Liaoning University,Shenyang 110036,China)
出处
《辽宁大学学报（自然科学版）》
CAS
2023年第2期177-184,共8页
Journal of Liaoning University：Natural Sciences Edition
基金
辽宁省兴辽英才计划(XLYC2007094)。
作者简介
郭强(1967-),男,辽宁营口人,硕士,教授,研究方向:煤炭清洁燃烧技术及工艺节能技术;通讯作者:李永庆,E-mail:yqli@lnu.edu.cn.
