无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2014, Vol. 46 ›› Issue (5): 52-.

• 论文 • 上一篇    下一篇

废弃脱硝催化剂中有价元素钛钒钨的综合利用研究

李化全1,2,郭传华3   

  1. 1.山东东佳集团技术中心,山东淄博 255200;2.山东理工大学化工学院;3淄博市质检所
  • 出版日期:2014-05-10 发布日期:2014-05-07

Comprehensive recovery of valuable elements vanadium,titanium,and tungsten from abandoned denitration catalyst

Li Huaquan1,2,Guo Chuanhua3   

  1. 1.Technology Center of Shandong Doguide Group,Zibo 255200,China;2.School of Chemical Engineering,
    Shandong University of Technology;3.Zibo Municipal Quality Inspection Institute
  • Published:2014-05-10 Online:2014-05-07

摘要: 研究了将废弃脱硝催化剂作为原料,采用强碱氢氧化钠作为熔融剂,回收废弃脱硝催化剂中的有价元素钛钨钒的方法。实验结果表明,将废弃脱硝催化剂采用固体氢氧化钠在500 ℃熔融,再将钛与钨和钒进行离子交换深度分离处理,得到钛钨钒的酸式盐类,通过控制不同的溶解性能,得到各元素的化合物。该方法效果良好,各类物质回收率达95.0%以上,解决了脱硝催化剂的二次污染问题,同时变废为宝,将废物综合利用提取有价元素,应用前景良好。

关键词: 固体氢氧化钠, 熔盐, 脱硝催化剂

Abstract: With the abandoned denitration catalyst as raw material,NaOH as melting agent,a method of recovering valuable elements,such as vanadium,titanium,and tungsten in the denitration catalyst was studied.Experimental results showed that, melt the abandoned denitration catalyst with solid sodium hydroxide at 500 ℃,and then separate titanium from tungsten and vanadium by ion exchange deep separation process to get acid salts of titanium,tungsten,and vanadium,and various compounds of each element were obtained by controlling the different solubilities.Recycling rates of all kinds of material reached more than 95%.This method not only solved the secondary pollution of denitration catalyst,but also made a comprehensive utilization of waste by extracting valuable elements.Therefore, it has a good prospect.

Key words: solid sodium hydroxide, molten salt, denitration catalyst

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