Experimental study on SCR catalyst: deactivation by calcium sulfate and catalyst regeneration

ZHANG Fajie; KONG Fanhai; BIAN Zijun

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Experimental study on SCR catalyst: deactivation by calcium sulfate and catalyst regeneration

Thermal Power Generation Issue 5, (2017)

更新时间：2025-09-28

- Experimental study on SCR catalyst: deactivation by calcium sulfate and catalyst regeneration
- 作者机构：
  
  苏州西热节能环保技术有限公司,江苏,苏州,215163
- 作者简介：
- 基金信息：
- DOI：
  CLC： O643.36+2
- Published Online：27 May 2017，
  
  Published：2017
- 稿件说明：
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ZHANG Fajie, KONG Fanhai, BIAN Zijun. Experimental study on SCR catalyst: deactivation by calcium sulfate and catalyst regeneration[J]. Thermal Power Generation, 2017, (5).
DOI：

ZHANG Fajie, KONG Fanhai, BIAN Zijun. Experimental study on SCR catalyst: deactivation by calcium sulfate and catalyst regeneration[J]. Thermal Power Generation, 2017, (5). DOI：

摘要

对工业用某脱硝催化剂样品进行了模拟硫酸钙（CaSO4）失活以及失活后再生的试验研究。试验在不同的再生药剂及再生条件下，用X射线衍射、X射线荧光光谱和比表面积分析等方法对再生前后的催化剂进行了表征，在实验室模拟烟气条件下对催化剂再生效果进行了分析。研究发现：催化剂微孔被CaSO4堵塞或覆盖后，脱硝效率明显下降；酸X清洗能够清除部分钙化合物，但无法清洗CaSO4；螯合剂Y与氨水配制的溶液可有效去除CaSO4，同时恢复比表面积，且碱性条件下清洗效果更好；经过螯合剂Y溶液清洗后的催化剂活性物质V有所下降，这会降低催化剂的脱硝效率，利用钒盐负载液NH4VO3浸渍后干燥焙烧，可实现对催化剂活性物质钒氧化物的补充，并将催化剂的脱硝效率恢复至新催化剂水平。

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