SCR脱硝装置大颗粒灰拦截技术试验研究

doi:10.11930/j.issn.1004-9649.201611118

中国电力 ›› 2018, Vol. 51 ›› Issue (2): 156-161,168.DOI: 10.11930/j.issn.1004-9649.201611118

SCR脱硝装置大颗粒灰拦截技术试验研究

金理鹏, 谢新华, 黄飞, 卢承政, 周健, 宋玉宝

西安热工研究院有限公司苏州分公司, 江苏苏州 215153

收稿日期:2016-11-27 修回日期:2017-09-26 出版日期:2018-02-05 发布日期:2018-02-11
作者简介:金理鹏(1982—),男,宁夏固原人,工学硕士,高级工程师,从事电站锅炉烟气脱硝技术研究与应用工作,E-mail:jinlipeng@tpri.com.cn。

Experimental Study on the Technology of Large Particle Ash Interception for SCR De-NO_x Equipment

JIN Lipeng, XIE Xinhua, HUANG Fei, LU Chengzheng, ZHOU Jian, SONG Yubao

Xi'an Thermal Power Research Institute Co., Ltd., Suzhou Branch, Suzhou 215153, China

Received:2016-11-27 Revised:2017-09-26 Online:2018-02-05 Published:2018-02-11

摘要/Abstract

摘要： 针对部分SCR烟气脱硝装置运行中发生的较为严重的大颗粒灰堵塞催化剂问题，采用冷态物理模型试验予以研究，分析了大颗粒灰拦截网的开孔形状、外形结构与安装位置对拦灰效率与系统阻力的影响，并对灰斗、导流、拦截网相结合的多个方案进行比较。研究结果表明：拦截网阻力与开孔率的三次方成反比；对于拦截网阻力和拦灰效率，拦截网开长条形孔优于开正六边形孔和开正方形孔；屋脊式和平板式拦截网的阻力、拦灰效果基本相同；在省煤器出口采用导流挡板+深灰斗+低拦灰网/挡板方案的大颗粒灰拦截效果最佳，其拦截效率可达95%以上，在SCR入口竖直烟道设置灰斗和折线形后墙可进一步提升拦灰效果。

关键词: 电厂烟气脱硝, SCR, 大颗粒灰, 拦截技术, 物理模型试验

Abstract: To solve the problem of LPA (Large Particle Ash) plugging in the SCR de-NO_x equipment, the study on the technology of LPA interception is performed with the usage of the physical model based experiments. The effects of the hole pattern, the external structure and the mounting position of the LPA screen on its ash removal efficiency and the system drag force are analyzed. Multiple combination schemes of the dust hopper, the deflector and the LPA screen are compared for the best technical solution. The experimental results demonstrate that the ash removal efficiency of the LPA screen with rectangular opening is better than that with square or hexagonal opening. The drag force of the LPA screen varies inversely to the third power of the opening ratio. There is no obvious difference between the pleated and flat LPA screens in terms of the ash removal efficiency and the drag force. It is observed that the ash removal efficiency of the combination scheme of the deflector, the deep dust hopper and the low LPA screen is more than 95% when they are installed in the outlet of the economizer. The ash removal efficiency can be further improved when another dust hopper and a broken-line back wall are installed in the inlet of the vertical flue.

Key words: power plant de-NO_x, SCR, large particle ash, interception technology, physical model experiment

中图分类号:

TM621
X511

金理鹏, 谢新华, 黄飞, 卢承政, 周健, 宋玉宝. SCR脱硝装置大颗粒灰拦截技术试验研究[J]. 中国电力, 2018, 51(2): 156-161,168.

JIN Lipeng, XIE Xinhua, HUANG Fei, LU Chengzheng, ZHOU Jian, SONG Yubao. Experimental Study on the Technology of Large Particle Ash Interception for SCR De-NO_x Equipment[J]. Electric Power, 2018, 51(2): 156-161,168.

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https://www.electricpower.com.cn/CN/Y2018/V51/I2/156

参考文献

[1] 中国电力企业联合会. 中国电力行业年度发展报告2016[R]. 北京: 中国电力企业联合会, 2016.
[2] 张杨, 杨用龙, 冯前伟, 等. 燃煤电厂SCR烟气脱硝改造工程关键技术[J]. 中国电力, 2015, 48(4): 32-35.
ZHANG Yang, YANG Yonglong, FENG Qianwei, et al. Key technical issues of SCR denitrification from coal-fired boiler flue gas [J]. Electric Power, 2015, 48(4): 32-35.
[3] 孙叶柱, 王义兵, 梁学东, 等. 火电厂SCR烟气脱硝反应器前设置灰斗及增加烟道截面的探讨[J]. 电力建设, 2011, 32(12): 64-68.
SUN Yezhu, WANG Yibing, LIANG Xuedong, et al. Discussion on installation of ash hopper and enlargement of flue section before SCR for coal-fired power plant [J]. Electric Power Construction, 2011, 32(12): 64-68.
[4] 何金亮, 金理鹏, 卢承政, 等. 燃煤电站SCR烟气脱硝系统运行典型故障诊断[J]. 中国电力, 2016, 49(8): 148-153.
HE Jinliang, JIN Lipeng, LU Chengzheng, et al. Diagnosis of typical operation faults of SCR flue gas denitrification system in coal-fired power plants [J]. Electric Power, 2016, 49(8): 148-153.
[5] 肖雨亭, 徐莉, 贾曼, 等. 蜂窝式脱硝催化剂在烟气中磨损行为的模拟研究[J]. 中国电力, 2012, 45(12): 96-98.
XIAO Yuting, XU Li, JIA Man, et al. Research on abrasion simulation of de-NO_x honeycomb catalysts in flue gas[J]. Electric Power, 2012, 45(12): 96-98.
[6] 金理鹏, 王勇, 宋玉宝, 等. 烟气参数对选择性催化还原系统设计的影响分析[J]. 热力发电, 2013, 42(8): 124-127.
JIN Lipeng, WANG Yong, SONG Yubao, et al. Effect of viscous fly ash on the SCR system design [J]. Thermal Power Generation, 2013, 42(8): 124-127.
[7] 刘红辉, 刘伟, 黄锐, 等. 燃煤电厂SCR脱硝催化剂失活及其再生性能研究[J]. 中国电力, 2014, 47(4): 139-143.
LIU Honghui, LIU Wei, HUANG Rui, et al. Study on performance of deactivated and regenerated catalysts for coal-fired power plant SCR denitration[J]. Electric Power, 2014, 47(4): 139-143.
[8] 刘含笑, 郦建国, 姚宇平, 等. 一种布置在ESP进口封头的微颗粒捕集增效装置研究和开发[J]. 中国电力, 2015, 48(8): 1-7.
LIU Hanxiao, LI Jianguo, YAO Yuping, et al. Research and development of enhanced PM_2.5 collection device installed in the ESP inlet hood[J]. Electric Power, 2015, 48(8): 1-7.
[9] EPRI. Large particle ash mitigation measures: preliminary findings from CFD modeling[R]. Palo Alto: EPRI, 2005.
[10] 周健. 特变电工2×350 MW超临界工程脱硝流场CFD数值模拟与物理模型试验报告[R]. 西安: 西安热工研究院有限公司, 2012.

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SCR脱硝装置大颗粒灰拦截技术试验研究

Experimental Study on the Technology of Large Particle Ash Interception for SCR De-NO_x Equipment

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