| 燃煤烟气中SO3与NH4HSO4生成特性及其控制方法研究进展 |
| |
| 引用本文： | 尹子骏,苏胜,王中辉,王乐乐,安晓雪,赵志刚,陈逸峰,刘涛,汪一,胡松,向军. 燃煤烟气中SO3与NH4HSO4生成特性及其控制方法研究进展[J]. 化工进展, 2021, 40(4): 2328-2337. DOI: 10.16085/j.issn.1000-6613.2020-1049 |
| |
| 作者姓名： | 尹子骏 苏胜 王中辉 王乐乐 安晓雪 赵志刚 陈逸峰 刘涛 汪一 胡松 向军 |
| |
| 作者单位： | 华中科技大学煤燃烧国家重点实验室,湖北武汉430074;西安热工研究院有限公司苏州分公司,江苏苏州215153 |
| |
| 基金项目： | 国家自然科学基金(51976072) |
| |
| 摘 要： | 在燃煤烟气中选择性催化还原（SCR）技术由于脱硝效率高、选择性好被广泛应用，然而SCR催化剂的催化作用会使烟气中的SO2氧化成SO3，SO3会与NH3等反应生成硫酸氢铵（ABS）和硫酸铵（AS），当烟气温度低于硫酸铵盐的凝结温度时，其会沉积在催化剂、空预器及其附属设备上，引发诸多严重的问题，对电厂的运行和环境造成了不利影响。本文综述了燃煤烟气中SO3与硫酸氢铵的生成特性及其控制方法最新进展，分析了SO3在锅炉和SCR系统中的形成机理、迁徙转化特性，阐述了控制SO3与硫酸氢铵生成的方法，介绍了不同活性组分对催化剂表面SO3和硫酸氢铵生成的影响。最后提出了开发新型催化剂是燃煤烟气中SO3与硫酸氢铵生成控制的重点研究方向。
|
| 关 键 词： | 三氧化硫 氮氧化物 选择性催化还原催化剂 硫酸氢铵 |
| 收稿时间： | 2020-06-10 |
Research progress on the characteristics and control methods of SO3 and NH4HSO4 formation in coal-fired flue gas |
| |
| YIN Zijun,SU Sheng,WANG Zhonghui,WANG Lele,AN Xiaoxue,ZHAO Zhigang,CHEN Yifeng,LIU Tao,WANG Yi,HU Song,XIANG Jun. Research progress on the characteristics and control methods of SO3 and NH4HSO4 formation in coal-fired flue gas[J]. Chemical Industry and Engineering Progress, 2021, 40(4): 2328-2337. DOI: 10.16085/j.issn.1000-6613.2020-1049 |
| |
| Authors: | YIN Zijun SU Sheng WANG Zhonghui WANG Lele AN Xiaoxue ZHAO Zhigang CHEN Yifeng LIU Tao WANG Yi HU Song XIANG Jun |
| |
| Affiliation: | 1.State Key Laboratory of Coal Combustion, Huazhong University of Science & Technology, Wuhan 430074, Hubei, China
2.Xi’an Thermal Power Research Institute Company Limited, Suzhou Branch, Suzhou 215153, Jiangsu, China |
| |
| Abstract: | SCR technology is widely used in treating coal-fired flue gas due to its high denitrification efficiency and good selectivity. However, SCR catalyst will oxidize the SO2 in flue gas to SO3, which will subsequently react with NH3 to generate ammonium bisulfate (ABS) and ammonium sulfate (AS). When the flue gas temperature is lower than the precipitation temperature of ammonium sulfate, it will deposit on the catalyst, air preheater and other attached equipment, which has caused many serious problems and brought a negative impact on the operation and environment of power plant. In this paper, the characteristics and control methods of SO3 and ammonium bisulfate formation in coal-fired flue gas are reviewed. The formation mechanism and migration transformation characteristics of SO3 in boiler and SCR system are analyzed. The effects of different active components on the generation of SO3 and ammonium bisulfate on catalyst’s surface are introduced. Finally, it is proposed that the development of new catalysts is the key research direction for the control of SO3 and ammonium bisulfate formation in coal-fired flue gas. |
| |
| Keywords: | sulfur trioxide nitrogen oxide selective catalytic reduction catalyst ammonium hydrogen sulfate |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化工进展》浏览原始摘要信息 |
|
点击此处可从《化工进展》下载免费的PDF全文 |
|
