SCR脱硝催化剂动态再生试验研究

doi:10.11930/j.issn.1004-9649.2014.8.150.3

中国电力 ›› 2014, Vol. 47 ›› Issue (8): 150-153.DOI: 10.11930/j.issn.1004-9649.2014.8.150.3

SCR脱硝催化剂动态再生试验研究

盘思伟¹, 杨建波², 陈冬林², 邓涛²

1. 广东电网公司电力科学研究院,广东广州 510080;
2. 长沙理工大学能源与动力工程学院,湖南长沙 410076

收稿日期:2014-01-09 出版日期:2014-08-18 发布日期:2015-12-10
作者简介:盘思伟（1975—）,男,广东台山人,高级工程师,从事火电厂污染物监测与治理研究。E-mail: siweipan@163.com

Experimental Study on Regeneration of SCR De-NO_x catalysts

PAN Si-wei¹, YANG Jian-bo², CHEN Dong-lin², DENG Tao²

1. Electric Power Research Institute of Guangdong Power Gird Corporation, Guangzhou 510080, China;
2. School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410076, China

Received:2014-01-09 Online:2014-08-18 Published:2015-12-10

摘要/Abstract

摘要： 火电厂采用选择性催化还原（SCR）法进行烟气脱硝,所用催化剂价格昂贵,因此有必要对使用过的旧催化剂进行再生。采用7种不同配方的再生液分别对典型的旧催化剂进行动态再生,对再生后的旧催化剂进行脱硝效率和SO₂/SO₃转化率试验,并运用扫描电镜、能谱分析等方法对新催化剂及再生与否的旧催化剂试样进行微观结构和元素组成分析,以评价各再生剂的再生效果和分析催化剂催化效率下降的原因。研究表明,旧催化剂经最佳配方再生液再生后,脱硝效率可增至72.2%,较再生前提高10%,达到新催化剂脱硝效率的92.8%,展现出了良好的应用前景。

关键词: 烟气脱硝, 选择性催化还原（SCR）, 脱硝催化剂, 催化剂再生, 扫描电镜（SEM）, X射线能谱分析（EDS）

Abstract: The catalyst adopted in the selective catalytic reduction (SCR) flue gas denitrification for thermal power plants is very expensive, which makes it necessary to regenerate the used catalyst. Seven regeneration liquids were prepared and used to regenerate the typically used SCR De-NO_x catalyst samples from coal-fired boilers. Then the denitrification efficiency and SO₂/SO₃ conversion rate of the regenerated catalysts were tested. SEM and EDS analyses on the micro structure and element composition of the fresh and regenerated catalysts were also conducted to evaluate the regeneration efficiency and figure out the reasons for the decrease of catalytic efficiency. The results show that the De-NO_x efficiency of the used catalyst regenerate by the optimum formula regeneration liquid is up to 72.2%, which is 92.8% of fresh catalyst efficiency and 10% higher than that of the catalyst before regeneration. This means that optimum formula regeneration liquid has a promising perspective for the engineering applications.

Key words: flue gas denitrification, SCR, De-NOx catalyst, catalyst regeneration, SEM, EDS

中图分类号:

TK229.6

盘思伟, 杨建波, 陈冬林, 邓涛. SCR脱硝催化剂动态再生试验研究[J]. 中国电力, 2014, 47(8): 150-153.

PAN Si-wei, YANG Jian-bo, CHEN Dong-lin, DENG Tao. Experimental Study on Regeneration of SCR De-NO_x catalysts[J]. Electric Power, 2014, 47(8): 150-153.

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https://www.electricpower.com.cn/CN/Y2014/V47/I8/150

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Experimental Study on Regeneration of SCR De-NO_x catalysts

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