Research on the Activation Change of Plate-Type Anti-arsenic-poisoning SCR De-NOx Catalyst in High-Arsenic Flue Gas

doi:10.11930/j.issn.1004-9649.202112007

Abstract

Abstract: To research the activity change and the influence of flue gas for different parts catalysts in high-arsenic coal-fired power plant, fresh catalyst and one-year-used catalysts from different parts were selected for denitrification activity tests, and characterizations including X-ray fluorescence (XRF), N₂ adsorption/desorption, X-ray photoelectron spectroscopy (XPS), and particle size analysis were conducted. The results showed that under 350°C, the activity of the one-year-used catalysts (at least 77.12%) was lower than that of the fresh catalyst (94.52%), indicating that the plate-type catalyst showed good resistance to arsenic. A large amount of arsenic had been accumulated in the one-year-used catalysts, and the average arsenic content of the upper and lower catalysts had reached 10.47% and 9.28% respectively. Through characterization and analysis, it was found that the upper and lower catalysts were both physically and chemically poisoned by arsenic. The major deactivation factor for the upper catalysts was physical blockage, while the chemical deactivation was dominant for the catalysts in the lower layer.

Key words: SCR catalyst, anti-arsenic-poisoning, denitrification performance, high arsenic coal, poisoning

CHEN Chen, JIA Shuya, LIU Dingjia, JIA Haiwei, ZHANG Ying, QU Yanchao. Research on the Activation Change of Plate-Type Anti-arsenic-poisoning SCR De-NO_x Catalyst in High-Arsenic Flue Gas[J]. Electric Power, 2022, 55(11): 202-208.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202112007

https://www.electricpower.com.cn/EN/Y2022/V55/I11/202

References

[1] 晏敏, 张杨, 郭博闻, 等. 基于全寿命周期成本的SCR脱硝系统优化分析[J]. 中国电力, 2021, 54(3): 191–196
YAN Min, ZHANG Yang, GUO Bowen, et al. Analysis on the optimization of SCR denitrification system based on life cycle cost[J]. Electric Power, 2021, 54(3): 191–196
[2] 华晨飞, 朱林, 姚杰, 等. 废烟气脱硝催化剂资源回用载体的品质及特性研究[J]. 中国电力, 2021, 54(2): 197–204
HUA Chenfei, ZHU Lin, YAO Jie, et a1. 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
[3] 赵宏, 张发捷, 马云龙, 等. 燃煤电厂SCR脱硝氨逃逸迁移规律试验研究[J]. 中国电力, 2021, 54(1): 196–202
ZHAO Hong, ZHANG Fajie, MA Yunlong, et a1. Test study on the migration characteristics of slip ammonia from the SCR system in the coal-fired power plant[J]. Electric Power, 2021, 54(1): 196–202
[4] 刘志坦, 姚杰, 庄柯, 等. 燃气轮机与燃煤机组SCR脱硝催化剂特性比较[J]. 中国电力, 2021, 54(6): 145–152
LIU Zhitan, YAO Jie, ZHUANG Ke, et a1. Comparison of characteristics of SCR-DeNO_x catalyst for gas-turbine units and coal-fired units[J]. Electric Power, 2021, 54(6): 145–152
[5] STREGE J R, ZYGARLICKE C J, FOLKEDAHL B C, et al. SCR deactivation in a full-scale cofired utility boiler[J]. Fuel, 2008, 87(7): 1341–1347.
[6] LISI L, LASORELLA G, MALLOGGI S, et a1. Single and combined deactivating effect of alkali metals and HCl on commercial SCR catalysts[J]. Applied Catalysis B:Environmental, 2004, 50(4): 251–258.
[7] 王宝冬, 汪国高, 刘斌, 等. 选择性催化还原脱硝催化剂的失活、失效预防、再生和回收利用研究进展[J]. 化工进展, 2013, 32(增刊1): 133–139
WANG Baodong, WANG Guogao, LIU Bin, et al. Development of SCR catalyst deactivation, regeneration and recycling[J]. Chemical Industry and Engineering Progress, 2013, 32(S1): 133–139
[8] PRITCHARD S, DIFRANCESCO C, KANEKO S, et a1. Optimizing SCR catalyst design and performance for coal-fired boilers[C]//Proceedings of the EPA/EPRI Symposium on Stationary Combination NO_x Control, 1995: 16-19.
[9] CHEN J P, BUZANOWSKI M A, YANG R T, et al. Deactivation of the vanadia catalyst in the selective catalytic reduction process[J]. Journal of the Air & Waste Management Association, 1990, 40(10): 1403–1409.
[10] 余岳溪, 廖永进, 束航, 等. SO₂与H₂O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 Hang, et al. 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
[11] PENG Y, LI J H, SI W Z, et al. Deactivation and regeneration of a commercial SCR catalyst: comparison with alkali metals and arsenic[J]. Applied Catalysis B:Environmental, 2015, 168-169: 195–202.
[12] 沈伯雄, 熊丽仙, 刘亭. 负载型V₂O₅-WO₃/TiO₂催化剂的砷中毒研究[J]. 燃料化学学报, 2011, 39(11): 856–859
SHEN Boxiong, XIONG Lixian, LIU Ting. Study on arsenic poisoning for loading catalyst of V₂O₅-WO₃/TiO₂[J]. Journal of Fuel Chemistry and Technology, 2011, 39(11): 856–859
[13] HILBRIG F, GOBEL H E, KNOZINGER H, et al. Interaction of arsenious oxide with DeNO_x-catalysts: an X-Ray absorption and diffuse reflectance infrared spectroscopy study[J]. Journal of Catalysis, 1991, 129(1): 168–176.
[14] KONG M, LIU Q C, WANG X Q, et al. Performance impact and poisoning mechanism of arsenic over commercial V₂O₅-WO₃/TiO₂ SCR catalyst[J]. Catalysis Communications, 2015, 72: 121–126.
[15] 朱春华, 陆强, 庄柯, 等. 燃煤电厂砷中毒SCR脱硝催化剂的失活特性研究[J]. 应用化工, 2018, 47(6): 1145–1149,1161
ZHU Chunhua, LU Qiang, ZHUANG Ke, et al. Research on the deactivation of arsenic poisoned SCR De-NO catalyst in coal-fired power plants[J]. Applied Chemical Industry, 2018, 47(6): 1145–1149,1161
[16] LI X, LI J H, PENG Y, et al. Regeneration of commercial SCR catalysts: probing the existing forms of arsenic oxide[J]. Environmental Science & Technology, 2015, 49(16): 9971–9978.
[17] 姚燕, 马云龙, 杨晓宁, 等. 高砷煤SCR脱硝催化剂中毒失活研究[J]. 中国电力, 2020, 53(6): 191–196
YAO Yan, MA Yunlong, YANG Xiaoning, et al. Deactivation of honeycomb SCR catalysts in high-arsenic coal-fired power plant[J]. Electric Power, 2020, 53(6): 191–196
[18] KWON D W, PARK K H, HONG S C. The influence on SCR activity of the atomic structure of V₂O₅/TiO₂ catalysts prepared by a mechanochemical method[J]. Applied Catalysis A: General, 2013, 451: 227–235.
[19] CHEN L, LI J H, GE M F. The poisoning effect of alkali metals doping over nano V₂O₅-WO₃/TiO₂ catalysts on selective catalytic reduction of NO_x by NH₃[J]. Chemical Engineering Journal, 2011, 170(2-3): 531–537.
[20] PARVULESCU V I, GRANGE P, DELMON B. Catalytic removal of NO[J]. Catalysis Today, 1998, 46(4): 233–316.

Research on the Activation Change of Plate-Type Anti-arsenic-poisoning SCR De-NO_x Catalyst in High-Arsenic Flue Gas

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