SO2与H2 O对商用钒钨钛脱硝催化剂毒化作用综述

doi:10.11930/j.issn.1004-9649.2016.12.168.06

中国电力 ›› 2016, Vol. 49 ›› Issue (12): 168-173.DOI: 10.11930/j.issn.1004-9649.2016.12.168.06

SO2与H2 O对商用钒钨钛脱硝催化剂毒化作用综述

余岳溪¹，廖永进¹，束航²，史雅娟²，张亚平²，杨林军²

1．广东电网有限责任公司电力科学研究院，广东广州 510080;
2．东南大学能源与环境学院，能源热转换及其过程测控教育部重点实验室，江苏南京 210096

收稿日期:2016-07-13 出版日期:2016-12-20 发布日期:2016-12-29
作者简介:余岳溪（1976—），男，广东湛江人，工学硕士，高级工程师，从事火电厂机组调试、节能减排等方面的技术服务和研究。E-mail: yyx23455@163.com
基金资助:
国家基础研究973计划资助项目（2013CB228505）；国家自然科学基金资助项目（51576039，51306034）；江苏省重点研发计划资助项目（BE2015677）；南方电网公司科技项目（K-GD2014-173）

Review of SO2 and H2O Poisoning over Commercial Vanadium-Titanium Catalysts in the Selective Catalytic Reduction Denitration

YU Yuexi¹, LIAO Yongjin¹, SHU Han², SHI Yajuan², ZHANG Yaping², YANG Linjun²

1. Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China;
2. Key Laboratory for Energy Thermal Conversion and Control of Ministry of Education, College of Energy and Environment, Southeast University, Nanjing 210096, China

Received:2016-07-13 Online:2016-12-20 Published:2016-12-29
Supported by:
This work is supported by National Basic Research Program(973 Program No. 2013CB228505), National Natural Science Foundation of China (No. 51576039 and No. 51306034), Key R & D projects of Jiangsu Province (No. BE2015677), Southern power grid company of science and technology funded projects (K-GD2014-173).

摘要/Abstract

摘要： 选择性催化还原（ＳＣＲ）脱硝技术在火电厂得到广泛应用，烟气组分对催化剂的性能影响及催化剂中毒、细颗粒物产生是当前研究热点。综述重点探讨了工业烟气中SO2、水蒸气（Ｈ２Ｏ）对商用钒钨钛脱硝催化剂的毒化机理、影响因素及控制措施。SO2的毒化机理主要包括硫酸铵盐的覆盖堵塞，催化剂表面活性点位的硫酸盐金属化，以及SO2与NH3、NO的竞争吸附等；H2O的毒化机理主要是其与NH3、NO竞争吸附降低了催化剂的脱硝效率，并促进产生大量的硫酸铵盐，以及阻碍硫酸铵盐与NO的降解反应等。

关键词: 烟气脱硝, 选择性催化还原, 催化剂中毒, SO2, H2O, 硫酸氢铵

Abstract: So far the technology of selective catalytic reduction of NOx with NH3 has been widely applied in power plants, of which the hot topics such as the effect of flue gas composition on catalyst performance, catalyst poisoning and the production of fine particles have been drawing more attentions. In this review the discussion is focused on the poisoning mechanism, influencing factors and optimization measures of SO2 and H2O in flue gas on the commercial V2O5-WO3/TiO2 catalysts. The poisoning mechanism of SO2 mainly includes ammonium sulfates blocking, mental sulfate absorbed on the active sites and the competitive absorption with NH3 and NO. The poisoning mechanism of H2O refers to the deteriorating NOx removal efficiency of the catalyst due to the competitive adsorption with NH3 and NO, which promotes the production of ammonium sulfate and inhibits the reaction between ammonium sulfates and NO, etc.

Key words: flue gas denitration, selective catalytic reduction, catalyst poisoning, SO2, H2O, ammonium bisulfate

中图分类号:

TM621
X511

余岳溪，廖永进，束航，史雅娟，张亚平，杨林军. SO2与H2 O对商用钒钨钛脱硝催化剂毒化作用综述[J]. 中国电力, 2016, 49(12): 168-173.

YU Yuexi, LIAO Yongjin, SHU Han, SHI Yajuan, ZHANG Yaping, YANG Linjun. Review of SO2 and H2O Poisoning over Commercial Vanadium-Titanium Catalysts in the Selective Catalytic Reduction Denitration[J]. Electric Power, 2016, 49(12): 168-173.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2016.12.168.06

https://www.electricpower.com.cn/CN/Y2016/V49/I12/168

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SO2与H2 O对商用钒钨钛脱硝催化剂毒化作用综述

Review of SO2 and H2O Poisoning over Commercial Vanadium-Titanium Catalysts in the Selective Catalytic Reduction Denitration

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SO2与H2 O对商用钒钨钛脱硝催化剂毒化作用综述

Review of SO2 and H2O Poisoning over Commercial Vanadium-Titanium Catalysts in the Selective Catalytic Reduction Denitration

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