[1]仲兆平,张茜芸,杨碧源,等.V2O5/TiO2烟气脱硝催化剂的钾、钠、锌、磷中毒及再生[J].东南大学学报(自然科学版),2013,43(3):548-552.[doi:10.3969/j.issn.1001-0505.2013.03.019]
 Zhong Zhaoping,Zhang Xiyun,Yang Biyuan,et al.Effects of potassium, sodium, zinc and phosphorus on flue gas de-NOxx performance over V2O5/TiO2 catalysts[J].Journal of Southeast University (Natural Science Edition),2013,43(3):548-552.[doi:10.3969/j.issn.1001-0505.2013.03.019]
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V2O5/TiO2烟气脱硝催化剂的钾、钠、锌、磷中毒及再生()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第3期
页码:
548-552
栏目:
环境科学与工程
出版日期:
2013-05-20

文章信息/Info

Title:
Effects of potassium, sodium, zinc and phosphorus on flue gas de-NOxx performance over V2O5/TiO2 catalysts
作者:
仲兆平张茜芸杨碧源姚杰
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Zhong Zhaoping Zhang Xiyun Yang Biyuan Yao Jie
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
选择性催化还原 氮氧化物 V2O5/TiO2催化剂 中毒 再生
Keywords:
selective catalytic reduction nitrogen oxide V2O5/TiO2 catalyst deactivation regeneration
分类号:
X701
DOI:
10.3969/j.issn.1001-0505.2013.03.019
摘要:
为研究SCR脱硝催化剂的钾、钠、锌、磷中毒,采用K,Na,Zn的氯盐和P的铵盐作为V2O5/TiO2催化剂中毒的前驱体,研究了4种物质对氨法SCR脱硝反应的影响.通过比较水洗、酸洗和氯化铵洗涤3种再生方式,对钾盐中毒的V2O5/TiO2催化剂进行了再生性能研究.最后对于新型抗中毒催化剂的制备进行了探索.实验结果表明:钾盐对于V2O5/TiO2催化剂的毒化作用最强;酸洗具有最佳的再生效果,钾盐中毒的催化剂经酸洗再生后,脱硝活性在一定条件下高于新鲜催化剂;通过添加助剂磷钨酸,V2O5/TiO2催化剂的活性温度窗口得以拓宽,且抗钾盐中毒能力也得到了提高.
Abstract:
For the purpose of this deactivation study, V2O5/TiO2 catalysts were used. K, Na, Zn and P were chosen as representative poisons to investigate the degree of deactivation for these catalysts during the ammonia selective catalytic reduction(SCR)process. Regenerative properties of V2O5/TiO2 catalyst deactivated by KCl were studied by washing with deionized water, acid and ammonium chloride respectively. And the anti-poisoned catalysts were also prepared and examined in the reduction of NOxx. The results show that potassium salt has the strongest poisoning effect on catalysts; the potassium salt poisoned catalyst has the best regenerative properties after pickling, its denitration activity is higher than the fresh catalyst under certain conditions; the catalytic promoter phosphotungstic acid exhibits an excellent deactivation resistance to potassium salt, and expands the activation temperature window clearly.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 仲兆平(1965—),男,博士,教授,博士生导师,zzhong@seu.edu.cn.
基金项目: 国家高技术研究发展计划(863计划)资助项目(2008AA05Z303)、江苏省科技支撑计划(工业部分)资助项目(BE2010184)、江苏省环保科研课题资助项目(201031).
引文格式: 仲兆平,张茜芸,杨碧源,等.V2O5/TiO2烟气脱硝催化剂的钾、钠、锌、磷中毒及再生[J].东南大学学报:自然科学版,2013,43(3):548-552. [doi:10.3969/j.issn.1001-0505.2013.03.019]
更新日期/Last Update: 2013-05-20