中国电力 ›› 2015, Vol. 48 ›› Issue (10): 144-147.DOI: 10.11930.2015.10.144

• 节能与环保 • 上一篇    下一篇

不同型式失活脱硝催化剂的再生研究

张涛,白伟,肖雨亭   

  1. 江苏龙源催化剂有限公司,江苏 无锡 214151
  • 收稿日期:2015-05-24 出版日期:2015-10-25 发布日期:2015-11-25
  • 作者简介:张涛(1980—),男,陕西武功人,工程师,从事SCR蜂窝状脱硝催化剂生产、技术研究及再生工作。E-mail: zhangt@lychj.cn
  • 基金资助:
    国家高技术研究发展计划(863计划)资助项目(2012AA06A113)

Study on Regeneration of Deactivated deNOx Catalyst of Different Types

ZHANG Tao, BAI Wei, XIAO Yuting   

  1. Longyuan Catalysts Co. Ltd. of Jiangsu, Wuxi 214151, China
  • Received:2015-05-24 Online:2015-10-25 Published:2015-11-25
  • Supported by:
    This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2012AA06A113).

摘要: 针对蜂窝式、板式及波纹式3种不同型式的失活脱硝催化剂,采用不同再生工艺进行再生,并采用X-射线衍射仪(XRD)、X射线荧光光谱仪(XRF)、比表面积分析仪等对催化剂表征进行测试,对再生前后催化剂结构和性能进行了比较。研究结果表明:再生后催化剂中钛白粉的晶型没有改变,V2O5等活性成分仍然以高分散的形态分布在钛白粉载体表面上;催化剂的BET比表面积和孔容积都得到提高,微孔结构得到恢复;中毒元素K、Na和Fe均得到不同程度的去除;催化剂脱硝活性得到提高。

关键词: 脱硝催化剂, 蜂窝式催化剂, 板式催化剂, 波纹式催化剂, 催化剂失活, 催化剂再生

Abstract: Regarding the three different types of deactivated deNOx catalysts, i.e., honeycomb, plate and corrugation types, different regeneration processes are adopted respectively. The catalyst characterization is also tested using X-ray diffraction(XRD), X-ray fluorescence spectroscopy (XRF) and the specific surface area analyzer. Then the structure and performance of the catalysts are compared before and after regeneration. The study results show that there is no change in the crystal form of titanium dioxide and the active ingredients such as V2O5 are still highly dispersed. After regeneration, the BET and pore volume of the three type catalysts are improved and the microporous structure is recovered. The toxic elements of K, Na and Fe are removed to some extent. Hence the catalytic activities get improved.

Key words: denitration catalyst, honeycomb catalyst, plate catalyst, corrugation catalyst, catalyst deactivation, catalyst regeneration

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