摘要
近些年,国内煤炭消耗量有不断增加趋势,煤炭燃烧过程造成的大气污染问题日益严重化,大气污染不仅降低人们生活及身体健康水平,也使国民经济发展阶段遇到一定阻力。若治理NOx烟气时采用低温氨选择性催化还原(NH3-SCR)技术,则有益于降低成本、提升余热利用率及延长催化剂使用寿命。既往关于低温NH3-SCR催化剂的报道中,Mn氧化物因在低温NH3-SCR条件下表现出良好活性、成本偏低、无毒性、无污染,故而演变为低温NH3-SCR催化剂的主要研究对象之一。文章利用Mn氧化物易发生SO2中毒的特性,把Mn氧化物设为除硫物开发设计出抗硫低温NH3-SCR催化剂,为拟化现实烟气条件,系统研究Mn氧化物与SO2的反应行为,综合分析试验研究结果后,认为文章所设计出的抗硫低温NH3-SCR催化剂持有较优良的抗硫性能。
In recent years,the domestic coal consumption has been increasing,and the air pollution caused by coal combustion has become increasingly serious.Air pollution not only reduces people’s living and health level,but also makes the national economy meet certain resistance in the development stage.If ammonia selective catalytic reduction(NH3-SCR)technology is used to treat NOx flue gas,it is beneficial to reduce the cost,improve the utilization rate of waste heat and prolong the service life of catalyst.In previous reports on low-temperature NH3-SCR catalyst,Mn oxide has evolved into one of the main research objects of low-temperature NH3-SCR catalyst because of its good activity,low cost,non-toxic and pollution-free.In this paper,the sulfur resistant low temperature NH3-SCR catalyst was developed and designed by using Mn oxide as desulfurizer.In order to simulate the actual flue gas conditions,the reaction behavior of Mn oxide and SO2 was systematically studied.After comprehensive analysis of the experimental results,it was considered that the sulfur resistant low temperature NH3-SCR catalyst designed in this paper has better sulfur resistance performance.
作者
李威
Li Wei(ChangSha Environmental Protection College,Changsha 410004,China)
出处
《化工管理》
2020年第22期96-97,共2页
Chemical Engineering Management
基金
用于锅炉NH3-SCR工艺高抗硫催化剂性能研究(课题编号18C1799)。
