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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 | |
| 引用本文： | 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. |
| 作者姓名： | 余岳溪 廖永进 束航 史雅娟 张亚平 杨林军 |
| 作者单位： | 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 |
| 基金项目： | 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） |
| 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 |
| 收稿时间： | 2016-07-13 |
Review of SO2 and H2O Poisoning over Commercial Vanadium-Titanium Catalysts in the Selective Catalytic Reduction Denitration |
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| 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. | |
| Authors: | YU Yuexi LIAO Yongjin SHU Han SHI Yajuan ZHANG Yaping YANG Linjun |
| Affiliation: | 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 |
| 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. |
| Keywords: | flue gas denitration selective catalytic reduction catalyst poisoning SO2 H2O ammonium bisulfate |
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