摘要
近年来,选择性催化还原(SCR)技术的广泛应用导致了废旧SCR脱硝催化剂的大量产生,为了节约资源,保护环境,必须对其进行妥善处理。废旧SCR脱硝催化剂通过回收有价组分、整体利用和固化处理等方式可实现资源化利用。回收有价组分的方法主要包括酸碱浸出、活化焙烧、熔盐电解、化学沉淀、有机萃取、离子交换等;整体利用的方法主要包括制备再生催化剂、生产含钛球团和含钛烧结矿;固化处理的方法主要包括熔融固化、水泥固化和陶瓷固化。对上述方法做出了详细的总结和展望,希望可以为未来废旧SCR脱硝催化剂的资源化利用提供启发和参考。
Recently,due to the increasing application of selective catalytic reduction(SCR)technology,a large number of spent SCR denitrification catalysts were inevitably produced.In order to save the resources and protect the environment,much attention should be attracted on their proper disposal.Spent SCR denitrification catalysts could be recycled as resources through the recovery of valuable components,overall utilization or solidification treatment,respectively.The valuable components could be effectively recovered from spent denitrification catalysts by acid-base leaching,active roasting,molten salt electrolysis,chemical precipitation,organic extraction,ion exchange.The catalyst could also be wholly used as a raw material for regenerating the catalyst and producing titanium-containing pellets or titanium-containing sinter.Moreover,it can also be solidified by melt solidification,cement solidification,ceramic solidification.Overall,the above-mentioned methods were comprehensively summarized and prospected,which will provide inspiration and reference for the resource utilization of spent SCR denitrification catalysts in the future.
作者
宋世哲
钱峰
刘忠成
马光宇
侯洪宇
徐鹏飞
Song Shizhe;Qian Feng;Liu Zhongcheng;Ma Guangyu;Hou Hongyu;Xu Pengfei(State Key Laboratory of Metal Material for Marine Equipment and Application,Anshan 114009,Liaoning,China;Technical Center,Angang Steel Co.Ltd.,Anshan 114009,Liaoning,China;Bayuquan Iron&Steel Subsidiary Company of Angang Steel Co.Ltd.,Yingkou 115007,Liaoning,China)
出处
《钢铁钒钛》
CAS
北大核心
2024年第5期98-107,共10页
Iron Steel Vanadium Titanium
关键词
废旧SCR脱硝催化剂
资源化利用
有价组分
整体利用
固化处理
spent SCR denitrification catalyst
resource utilization
valuable components
overall utilization
solidification treatment
作者简介
宋世哲,1995年出生,男,吉林吉林人,硕士,长期从事冶金资源循环利用方面的研究工作,E-mail:535424234@qq.com。
