摘要
钢铁工业烟气成分复杂,飞灰、NO_(x)和二[口恶]英等污染物普遍存在,其对烟气处理单元的要求越来越高。催化滤袋能够在同一反应器中处理多种污染物,成为协同脱除技术的突破口。本文重点综述除尘、除尘脱硝以及除尘脱二[口恶]英一体化催化滤料,阐述多种催化滤袋技术的研究现状。针对催化组分与滤袋结合强度不足问题,一方面是改进负载方法,如使用原位生长法、优化涂覆法等,其中原位生长法效果突出且负载均匀度也更高,是具有潜力的负载方法之一;另一方面是对滤袋的处理,如覆膜、滤料预处理等,这两种方法还可提升催化滤袋的抗中毒性能,但要解决易中毒难题需聚焦催化材料组分的优化。针对多污染物脱除温度窗口与滤料耐受温度存在差异的问题,更换P84材质滤料是目前较好的解决办法。随着材料学的发展,更耐高温的滤料材料将涌现。本文旨在缩短当前技术与实际需求之间的差距,为实现催化滤料在多污染物协同脱除方面的商业应用提供助力。
The composition of gas in the iron and steel industry is complex,and pollutants such as fly ash,NO_(x) and dioxin are common,and its requirements for gas treatment units are getting higher and higher.Catalytic filter bags are capable of treating multiple contaminants in the same reactor,making it a breakthrough in collaborative removal technology.The integrated catalytic filter materials for dust removal,dust removal and denitrification and dust removal dioxin removal are focused on,and the research status of various catalytic filter bag technologies is expounded.In order to solve the problem of insufficient bonding strength between catalytic components and filter bags,on the one hand,it is necessary to improve the loading method,such as using the in-situ growth method and the optimized coating method,among which the in-situ growth method has outstanding effect and higher loading uniformity,which is one of the potential loading methods.On the other hand,it is necessary to treat filter bags,such as film lamination,filter material pretreatment,etc.,these two methods can also improve the anti-poisoning performance of catalytic filter bags;however,in order to solve the problem of easy poisoning,it is necessary to focus on the optimization of catalytic material components.In view of the difference between the temperature window for the removal of multiple pollutants and the tolerance temperature of the filter material,replacing the P84 material filter media is a better solution at present.With the development of materials science,more high-temperature resistant material filter media will emerge.The purpose of this paper is to bridge the gap between the current technology and the actual needs,and to provide a boost for the commercial application of catalytic filter media in the collaborative removal of multiple pollutants.
作者
徐海涛
邓雨杭
陈利国
程鑫培
徐慕涛
战志博
金奇杰
XU Haitao;DENG Yuhang;CHEN Liguo;CHENG Xinpei;XU Mutao;ZHAN Zhibo;JIN Qijie(Nanjing Tech University School of Environmental Science and Engineering,Nanjing 211816,Jiangsu,China;Nanjing Tech University College of Materials Science and Engineering,Nanjing 211816,Jiangsu,China)
出处
《烧结球团》
北大核心
2025年第3期12-19,69,共9页
Sintering and Pelletizing
基金
国家重点研发计划资助项目(2021YFB3500600&2021YFB3500605)
江苏省重点研发计划资助项目(BE2022142)
江苏省基础研究计划自然科学基金青年基金资助项目(BK20220365)
扬州市科技计划资助项目(YZ2024283&YZ2023020)
江苏省研究生科研与实践创新计划资助项目(KYCX24_1560)。
关键词
催化滤袋
除尘
脱硝
二[口恶]英
catalytic filter bag
dust removal
denitrification
dioxins
