Research Progress of CFD-Based SCR Flue Gas De-NOx Technology  for Coal-Fired Power Plants

doi:10.11930/j.issn.1004-9649.2016.08.157.05

Abstract

Abstract: Although the selective catalytic reduction(SCR) flue gas denitrification technology has been widely used, some problems still keep happening occasionally such as the wearing and the blockage of the catalyst, the uneven mixing of reducing agent with flue gas, etc. With the CFD technology the scenarios from multiple differentaspects can be simulated, which is helpful to resolve these problems. In this paper, the literatures on the progress of CFD-based SCR flue gas denitrification technology are summarized. On the basis of sorting out the literatures, the application of computational fluid dynamics CFD software in the simulation of SCR flue gas denitrification is expounded, which mainly includes the simulations of flow field,concentration field, gas-solid two-phase flow and chemical reactions. It is concluded that reasonable and uniform flow fields are the essential to the economic and security operation of the whole SCR system. The integrated simulations of SCR model coupled with detailed reaction kinetics model, furnace combustion model combined with SNCR model will capture more attention in the future studies.

Key words: coal fired power plant, flue gas denitrification, SCR, numerical simulation

CLC Number:

X701.1
TM621

ZHAO Dazhou, LIU Peiqi, HE Sheng, ZHENG Wenguang. Research Progress of CFD-Based SCR Flue Gas De-NOx Technology for Coal-Fired Power Plants[J]. Electric Power, 2016, 49(8): 157-161.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.08.157.05

https://www.electricpower.com.cn/EN/Y2016/V49/I8/157

References

[1] 孙克勤，钟秦.火电厂烟气脱硝技术及工程应用[M]. 北京：化学工业出版社，2006.
[2] 张强. 燃煤电站SCR烟气脱硝技术及工程应用[M]. 北京：化学工业出版社，2007.
[3] 雷达，金保升. 喷氨格栅处烟气速度场对高效SCR均流与还原剂混合性能的影响[J]. 热能动力工程，2009，24（1）：113－119．
LEI Da, JIN Baosheng. The influence of flue gas velocity field of AIG for the uniform flow and reducing agent mixing performance of efficient SCR[J]. Journal of Engineering for Thermal Energy and Power, 2009, 24(1): 113-119.
[4] 毛剑宏，蒋新伟，钟毅，等. 变截面倾斜烟道导流板对AIG入口流场的影响[J]. 浙江大学学报（工学版），2011，45（8）：1453－1457.
MAO Jianhong, JIANG Xinwei, ZHONG Yi, et al. The effect of splitters layout at variable cross-section inclined flue on AIG inlet flow field[J]. Journal of Zhejiang University (Engineering Science), 2011, 45(8): 1453-1457.
[5] 沈凡，仲兆平，过小玲. 600 MW电厂SCR烟气脱硝反应器内不同导流板的流场数值模拟[J]. 电力环境保护，2007，23（1）:42-45.
SHEN Dan, ZHONG Zhaoping, GUO Xiaoling. Numerical simulation of different guide plates in selective catalytic reduction denitrification reactor of 600 MW power plant [J]. Electric Power Environment Protection, 2007, 23(1): 42-45.
[6] 蔡小锋，李晓芸. SCR反应塔入口段烟气速度场的数值模拟[J]. 电力环境保护，2006，22（5）：18－19．
CAI Xiaofeng, LI Xiaoyun. Numerical simulation for flue gas velocity field at the entry section of SCR reaction tower[J]. Electric Power Environment Protection, 2006, 22(5): 18-19.
[7] 张波，牛国平，王月明，等. SCR系统急转烟道均流装置的数值模拟[J]. 热力发电，2014，43（4）：87－94．
ZHANG Bo, NIU Guoping, WANG Yueming, et al. Numerical simulation on a new type sharp bend flue equalizing device in SCR system of a 350 MW unit boiler[J]. Thermal Power Generation, 2014, 43(4): 87-94.
[8] 董陈，乔海勇，牛国平. 某600 MW机组SCR烟气脱硝装置优化设计[J]. 热力发电，2014，43（12）：99－104．
DONG Chen, QIAO Haiyong, NIU Guoping, et al. Optimization design of SCR flue gas denitration equipment for a 600 MW unit[J]. Thermal Power Generation, 2014, 43(12): 99-104.
[9] 汪洋，崔一尘，吴树志，等. 脱硝反应器烟气整流格栅流场数值模拟研究[J]. 热力发电，2009，38（11）：28－34．
WANG Yang, CUI Yichen, WU Shuzhi, et al. Study on numerical simulation of flow field in the De-NOx reaction with gas straightening gratings[J]. Thermal Power Generation, 2009, 38(11): 28-34.
[10] 林钢，金强，许媛媛，等. 基于CFD的SCR脱硝装置整流格栅优化设计[J]. 控制工程，2011，18（S1）：97－99．
LIN Gang, JIN Qiang, XU Yuanyuan, et al. Optimal design of the straight grids for SCR-DeNOx facility based on CFD simulations[J]. Control Engineering of China, 2011, 18(S1): 97-99.
[11] 李林涛，云涛，袁景淇. 基于CFD仿真的SCR脱硝装置整流器结构优化[J]. 控制工程，2013，20（增刊）：51－54．
LI Lintao, YUN Tao, YUAN Jingqi. Improved structure design for the straightener of SCR-DeNOx facility based on the CFD simulations [J]. Control Engineering of China, 2013, 20(S): 51-54.
[12] 邓静杰，韦红旗，仲亚飞. 670 MW机组SCR脱硝催化剂磨损的研究分析[J]. 电站系统工程，2015，31（4）：58－63．
DENG Jingjie, WEI Hongqi, ZHONG Yafei. Analysis on abrasion of catalyst in SCR denitrification device of 670 MW power unit[J]. Power System Engineering, 2015, 31(4): 58-63.
[13] 董建勋，李辰飞，王松龄，等. 还原剂分布不均对SCR脱硝性能影响的模拟分析[J]. 电站系统工程，2007，23（1）：20－24．
DONG Jianxun, LI Chenfei, WANG Songling, et al. Simulation of effect of non-uniformity of reagent distribution on SCR DeNOx performance [J]. Power System Engineering, 2007, 23(1): 20-24.
[14] 汤元强，吴国江，赵亮. SCR脱硝系统喷氨格栅优化设计[J]. 热力发电，2013，42（3）：58－62．
TANG Yuanqiang, WU Guojiang, ZHAO Liang. Design optimization of ammonia injection grid in SCR denitrification system[J].Thermal Power Generation, 2013, 42(3): 58-62.
[15] 吴学智，聂会建，鞠付斌，等. SCR脱硝系统不均匀喷氨方案的数值模拟研究[J]. 电力科技与环保，2014，30（5）：26－29．
WU Xuezhi, NIE Huijian, JU Fubin, et al. CFD simulation study of non-uniform ammonia injection in SCR denitrification system[J]. Electric Power Technology and Environment Protection, 2014, 30(5): 26-29.
[16] 王乐乐，周健，姚友工，等. 烟气脱硝SCR氨喷射系统调整效果评估[J]. 中国电力，2015，48（4）：16－22．
WANG Lele, ZHOU Jian, YAO Yougong, et al. Evaluation on effects of SCR ammonia injection system modification for flue gas denitrification [J]. Electric Power, 2015, 48(4): 16-22.
[17] 雷达，金保升. 喷氨格栅处烟气速度场对高效SCR均流与还原剂混合性能的影响[J]. 热能动力工程，2009，24（1）：113－119．
LEI Da, JIN Baosheng. The influence of flue gas velocity field of AIG for the uniform flow and reducing agent mixing performance of efficient SCR[J]. Journal of Engineering for Thermal Energy and Power, 2009, 24(1): 113-119.
[18] 裴煜坤，吴卫红，苏秋凤，等. V型喷氨混合装置结构优化研究[J]. 能源与环境，2013（4）：49－53．
PEI Yukun, WU Weihong, SU Qiufeng, et al. Study on optimizing the structure of ammonia injection and V-shaped mixing devices [J]. Energy and Environment, 2013(4): 49-53.
[19] 洪文鹏，兰江. SCR系统静态混合器数值模拟[J]. 锅炉技术，2014，45（3）：68-72.
HONG Wenpeng, LAN Jiang. Numerical simulation of static mixer in SCR De-NOx system [J]. Boiler Technology, 2014, 45(3):68-72.
[20] 隋莉莉，袁景淇. 火电SCR脱硝系统混合与均流CFD仿真[J].控制工程，2008，15（5）：523－525．
SUI Lili, YUAN Jingqi. CFD simulation for mixing and flow- uniforming in SCR-DeNOx system of coal-fired power plant[J].Control Engineering of China, 2008, 15(5): 523-525.
[21] ROGERS K J, ALBRECHT M, VAMER M. Numerical modeling for design optimization of SCR applications[C]//ICAC NOx Forum, Washington DC, 2000.
[22] 雷达，金保升. 电站选择性催化还原系统速度场测量方法[J]. 中国电机工程学报，2009，29（35）：89－94．
LEI Da, JIN Baosheng. Velocity distribution measuring method used in power station selective reduction system[J]. Proceedings of the CSEE, 2009, 29(35): 89-95.
[23] Yuanyuan Xu, Yan Zhang, Fengna Liu, et al. CFD analysis on the catalyst layer breakage failure of an SCR-DeNOx system for a 350 MW coal-fired power plant[J]. Computers & Chemical Engineering, 2014, 69(3): 119-127.
[24] 盛波，韦红旗，朱亚迪. 脱硝系统内横梁结构对催化剂磨损的影响[J]. 动力工程学报2015，35（6）：489－495．
SHENG Bo, WEI Hongqi, ZHU Yadi. Impact of beam structure on catalyst abrasion in the denitrification system[J]. Chinese Journal of Power Engineering, 2015, 35(6): 489-495.
[25] KUAN B, REA N, SCHWARZ M P. Application of CFD in the design of a grit collection system for the coal-fired power generation industry [J]. Powder Technology, 2007, 179(1-2): 65-72.
[26] 朱天宇，李德波，方庆艳，等. 燃煤锅炉SCR烟气脱硝系统流场优化的数值模拟[J]. 动力工程学报，2015，35（6）：481－488．
ZHU Tianyu, LI Debo, FANG Qingyan, et al. Flow field optimization for SCR system of coal-fired power plants [J]. Journal of Chinese Society of Power Engineering, 2015, 35(6):481-488.
[27] RYAN A, JOHN B S. SCR system design considerations for “popcorn” ash[C]//EPRI-DOE-EPA-AWMA Combined Power Plant Air Pollutant Control Mega Symposium, Washington, DC,2003.
[28] 凌忠钱，曾宪阳，胡善涛，等. 电站锅炉SCR烟气脱硝系统优化数值模拟[J]. 动力工程学报，2014，34（1）：50－56．
LING Zhongqian, ZENG Xianyang, HU Shantao, et al. Numerical simulation on optimization of SCR denitrification system for coal- fired boilers [J]. Journal of Chinese Society of Power Engineering, 2014, 34(1): 50-56.
[29] 雷达，金保升. 基于复相催化反应动力学的电站SCR系统三维数值模型[J]. 燃烧科学与技术，2010，16（3）：236－240．
LEI Da, JIN Baosheng. 3-D numerical model of a power station SCR system based on heterogeneous reaction[J]. Journal of Combustion Science and Technology, 2010, 16(3): 236-240.
[30] ADAMS B, SENIOR C. Improving design of SCR systems with CFD modeling[C]//DOE Environmental Controls Conference,Pittsburgh, 2006.
[31] BOLTON B, FAN X, HAKIM N, et al. Update on modeling for effective diesel engine after treatment implementation-master plan Status and critical needs[EB/OL]. http://www.babcock.com/library/Documents/br-1699.pdf
[32] HAB Xiaohai, WEI Xiaolin, SCHNELL U, et al. Detailed modeling of hybrid reburn/SNCR processes for NOx reduction in coal-fired furnaces[J]. Combustion and Flame, 2003, 132(3): 374-386.
[33] BIBLE S A RUMMENHOHL V, SIEBEKING M, et al. Modeling layered NOx reduction technologies[EB/OL]. http://www.ftek.com/en-US/library/technical-papers/
[34] 朱晨曦，郑迎九，周昊. SNCR+SCR烟气联合脱硝工艺在电站锅炉中的应用[J]. 中国电力，2016，49（2）：164－169．
ZHU Chenxi, ZHENG Yingjiu, ZHOU Hao. The application of SNCR+SCR united flue gas denitration technique in power generation boiler [J]. Electric Power, 2016, 49(2): 164-169.

Research Progress of CFD-Based SCR Flue Gas De-NOx Technology for Coal-Fired Power Plants

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