低SO2氧化率钒钛基选择性催化还原脱硝催化剂研究进展
Research progress of vanadium titanium based selective catalytic reduction denitration catalyst with low SO2 oxidation rate
陈校艺 1赵博 2李浙飞 2柯权力 3周瑛 3卢晗锋3
作者信息
- 1. 浙江工业大学环境学院,环境生态与工程研究所,浙江 杭州 310014;浙江德创环保科技股份有限公司,浙江 绍兴 312000
- 2. 浙江德创环保科技股份有限公司,浙江 绍兴 312000
- 3. 浙江工业大学化学工程学院,催化反应工程研究所,浙江 杭州 310014
- 折叠
摘要
选择性催化还原(SCR)脱硝技术是目前烟气氮氧化物控制最主流的技术.商用SCR催化剂主要由V2O5-WO3(MoO3)/TiO2组成,其中V2O5不仅对烟气中的氮氧化物有催化还原作用,同时也能促进SO2的氧化,导致硫酸铵盐的生成,进而造成催化剂孔道堵塞,活性位点减少,使催化剂活性降低,脱硝效率下降.基于此,主要探讨了钒钛基SCR催化剂对SO2的氧化机理及其研究进展,总结了国内外降低钒钛基SCR催化剂SO2氧化率的一些主要措施,并对此进行了分析和讨论.
Abstract
Selective catalytic reduction(SCR)denitration technology is currently the most mainstream technology for controlling nitrogen oxides in flue gas.Commercial SCR catalyst is mainly composed of V2 O5-WO3(MoO3)/TiO2.V2O5 not only has catalytic reduction effect on nitrogen oxides in flue gas,but also can promote the oxidation of SO2,resulting in the formation of ammonium sulfate,which leads to the blockage of catalyst channels,the reduction of active site,the reduction of catalyst activity and the reduction of denitrification efficiency.This article mainly explored the oxidation mechanism and research progress of SO2 in vanadium titanium based SCR catalysts,summarized some main measures to reduce the SO2 oxidation rate of vanadium titanium based SCR catalysts at home and abroad,and analyzed and discussed this issue.
关键词
选择性催化还原/脱硝/钒基催化剂SO2氧化率Key words
selective catalytic reduction/denitrification/vanadium based catalyst/SO2 oxidation rate引用本文复制引用
基金项目
绍兴市产业关键技术攻关计划(2022B41007)
浙江省自然科学基金(LZ21E080001)
浙江省自然科学基金(LGF20E080018)
出版年
2024
NETL
NSTL
万方数据