Research on the Quality and Characteristics of Carriers for Resource Reuse of Waste Flue Gas Denitration Catalyst

doi:10.11930/j.issn.1004-9649.202009139

Abstract

Abstract: In this study, three resource-recycled titanium-based carriers and one fresh titanium-based carrier were selected and analyzed to study the differences between these two types of carriers by virtue of laser particle size analyzer, X-ray fluorescence (XRF) analyzer, inductive coupled plasma (ICP) emission spectrometer, BET testing method and mercury intrusion porosimeter, etc. Furthermore, the above four carriers were used as raw materials to prepare finished catalyst products through active component loading and extrusion molding. Then the main components and trace element contents, specific surface area, mechanical strength, denitration efficiency and activity were tested respectively in the finished catalysts. The results show that, compared with fresh titanium-based carriers, the resource-recycled titanium-based carriers have more uneven particle size distribution, smaller specific surface area, less specific pore volume, and higher contents of toxic elements, which will affect the qualities of the corresponding finished catalysts, and eventually result in low denitration efficiency and activity.

Key words: SCR denitration, catalyst, denitration efficiency, activity, resource reuse, titanium-based carrier

HUA Chenfei, ZHU Lin, YAO Jie, ZHUANG Ke. Research on the Quality and Characteristics of Carriers for Resource Reuse of Waste Flue Gas Denitration Catalyst[J]. Electric Power, 2021, 54(2): 197-204.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202009139

https://www.electricpower.com.cn/EN/Y2021/V54/I2/197

References

[1] HU Y H, GRIFFITHS K, NORTON P R. Surface science studies of selective catalytic reduction of NO: progress in the last ten years[J]. Surface Science, 2009, 603(10-12): 1740-1750.
[2] 王斌, 刘政修, 任学刚. 火力发电厂锅炉烟气脱硝催化剂性能评估[J]. 华北电力技术, 2015(8): 37-41
WANG Bin, LIU Zhengxiu, REN Xuegang. Boiler flue gas denitrification catalyst performance evaluation of thermal power plant[J]. North China Electric Power, 2015(8): 37-41
[3] SHIMIZU K I, SATSUMA A. Selective catalytic reduction of NO over supported silver catalysts: practical and mechanistic aspects[J]. Physical Chemistry Chemical Physics, 2006, 8(23): 2677-2695.
[4] 戚春萍, 武文粉, 王晨晔, 等. 燃煤电厂废旧SCR脱硝催化剂中TiO₂载体的回收与再利用[J]. 化工学报, 2017, 68(11): 4239-4248
QI Chunping, WU Wenfen, WANG Chenye, et al. Recycling and reuse of TiO₂ carrier from waste SCR catalysts used in coal-fired power plants[J]. CIESC Journal, 2017, 68(11): 4239-4248
[5] 吴卫红, 吴华, 罗佳, 等. SCR烟气脱硝催化剂再生研究进展[J]. 应用化工, 2013, 42(7): 1304-1307
WU Weihong, WU Hua, LUO Jia, et al. Research progress on the regeneration of SCR catalysts for flue gas denitrification[J]. Applied Chemical Industry, 2013, 42(7): 1304-1307
[6] 张琛. 废SCR催化剂中钒、钨的浸出与萃取分离研究[D]. 广州: 华南理工大学, 2016.
ZHANG Chen. The study on leaching and solvent extraction separation of vanadium and tungsten from waste SCR catalysts[D]. Guangzhou: South China University of Technology, 2016.
[7] 王乐乐, 杨晓宁, 何川, 等. 燃煤电厂废旧SCR催化剂无害化掺烧试验研究及可行性分析[J]. 华电技术, 2017, 39(5): 7-11, 16, 77
WANG Lele, YANG Xiaoning, HE Chuan, et al. Coal-fired power plant waste SCR catalyst harmless blending combustion study and feasibility analysis[J]. Huadian Technology, 2017, 39(5): 7-11, 16, 77
[8] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 蜂窝式烟气脱硝催化剂: GB/T 31587—2015[S]. 北京: 中国标准出版社, 2015.
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China. Honeycomb-type DeNO_x catalysts: GB/T 31587—2015[S]. Beijing: Standards Press of China, 2015.
[9] 国家能源局. 火电厂烟气脱硝催化剂检测技术规范: DL/T 1286—2013[S]. 北京: 中国电力出版社, 2014.
[10] DUAN J F, SHI W W, XIA Q B, et al. Characterization and regeneration of deactivated commercial SCR catalyst[J]. Journal of Functional Materials, 2012, 43(16): 2191-2195.
[11] 李泽英, 唐清, 左赵宏, 等. 载体对V₂O₅-MoO₃/TiO₂催化剂表面性质及其选择性催化还原脱硝性能的影响[J]. 工业催化, 2016, 24(7): 41-48
LI Zeying, TANG Qing, ZUO Zhaohong, et al. Influence of texture structures of TiO₂ supports on surface properties and SCR performance of V₂O₅-MoO₃/TiO₂ catalyst[J]. Industrial Catalysis, 2016, 24(7): 41-48
[12] 李泽英. 钒钛系SCR脱硝催化剂制备和催化剂失活及再生试验研究[D]. 重庆: 重庆大学, 2016.
LI Zeying. Preparation of vanadia-titania SCR catalyst for De-NO_x and study of deactivation causes and regeneration method of commercial catalysts[D]. Chongqing: Chongqing University, 2016.
[13] 乔南利, 杨忆新, 刘清龙, 等. 载体物化性质对锰铈催化剂NH₃-SCR脱硝性能的影响[J]. 燃料化学学报, 2018, 46(6): 733-742
QIAO Nanli, YANG Yixin, LIU Qinglong, et al. Influence of different supports on the physicochemical properties and denitration performance of the supported MnCe-based catalysts for NH₃-SCR[J]. Journal of Fuel Chemistry and Technology, 2018, 46(6): 733-742
[14] 刘雪松, 吴晓东, 许腾飞, 等. Si改性对V₂O₅/WO₃-TiO₂催化剂NH₃-SCR活性和热稳定性的影响(英文)[J]. 催化学报, 2016, 37(8): 1340-1346
LIU Xuesong, WU Xiaodong, XU Tengfei, et al. Effects of silica additive on the NH₃-SCR activity and thermal stability of a V₂O₅/WO₃-TiO₂ catalyst[J]. Chinese Journal of Catalysis, 2016, 37(8): 1340-1346
[15] 王洁. 燃煤发电厂脱硝催化剂的成分及表面分析研究[J]. 浙江电力, 2015, 34(11): 92-96
WANG Jie. Composition and surface analysis of denitration catalyst in coal-fired power plants[J]. Zhejiang Electric Power, 2015, 34(11): 92-96
[16] 张瀚之. SCR催化法中SO₂/SO₃转化率的影响因素研究[D]. 北京: 华北电力大学, 2018.
ZHANG Hanzhi. Influencing factors of SO₂ / SO₃ conversion rate in SCR catalytic process[D]. Beijing: North China Electric Power University, 2018.