摘要
随着钒基脱硝催化剂被大量应用于烟气脱硝中,作为危险固体废弃物的失活脱硝催化剂处置引起了人们的广泛关注。首先概述了脱硝催化剂失活的机理,然后总结了针对不同失活类型催化剂的再生方法,并介绍了部分工业再生案例,最后比较了废脱硝催化剂各种综合利用方式的优缺点。根据催化剂的失活程度和原因,合理选择再生方式和综合利用方式,以达到尽可能避免填埋处理的目的。
With the application of V-based catalysts in the flue gas denitrification, deactivated catalysts as the hazardous solidwaste have drawn much attention of human beings. In this paper, the mechanism of deactivation for denitrification catalysts was analyzed at first. The effective regeneration methods for different types of deactivated catalysts were summarized based on the reasons of catalyst deactivation and some industrial regeneration cases were introduced. The advantages and disadvantages of different comprehensive utilizations for waste catalysts were also studied. The regeneration and comprehensive utilization should be based on the level of the deactivated catalysts, thus avoiding the landfill treatment as far as possible.
作者
齐莹莹
同召建
李帅
于艳科
何炽
QI Yingying;TONG Zhaojian;LI Shuai;YU Yanke;HE Chi(College of Geology and Environment,Xi’an University of Science and Technology,Xi’an 710054,China;School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Henan Institute of Metallurgy Co.Ltd.,Zhengzhou 450053,China)
出处
《环境保护科学》
CAS
2022年第6期6-15,共10页
Environmental Protection Science
基金
国家自然科学基金资助项目(21906127)
中国博士后科学基金资助项目(2021M692550)。
关键词
脱硝催化剂
失活
再生
综合利用
denitrification catalyst
deactivation
regeneration
comprehensive utilization
