中国电力 ›› 2016, Vol. 49 ›› Issue (11): 153-158.DOI: 10.11930/j.issn.1004-9649.2016.11.153.06

• 节能与环保 • 上一篇    下一篇

300 MW级燃煤机组SCR烟气脱硝超低排放性能评估

冯前伟, 张杨, 王丰吉, 朱跃   

  1. 华电电力科学研究院,浙江 杭州 310030
  • 收稿日期:2016-05-13 出版日期:2016-11-10 发布日期:2016-12-09
  • 作者简介:冯前伟(1985—),男,湖北黄石人,硕士,工程师,从事电厂环保设计研究和技术服务工作。E-mail: fqw0528@sina.com
  • 基金资助:
    中国华电工程(集团)有限公司科技资助项目(大型燃煤锅炉SCR烟气脱硝疑难问题技术攻关与运行优化研究(CHDKJ-2015-G04))

Evaluation on Ultra-Low Emission Performance of SCR Flue Gas Denitrification Device for 300-MW Class Coal-Fired Units

FENG Qianwei, ZHANG Yang, WANG Fengji, ZHU Yue   

  1. Huadian Electric Power Research Institute, Hangzhou 310030, China
  • Received:2016-05-13 Online:2016-11-10 Published:2016-12-09
  • Supported by:
    ; This work is supported by China Huadian Engineering Co., Ltd. Science and Technology Project(Large-scale coal-fired boiler flue gas denitrification SCR technology research and difficult problems running Optimization) (No. CHDKJ-2015-G04).

摘要: 对脱硝超低排放机组进行性能评估与分析,可为超低排放形势下燃煤机组选择性催化还原法(SCR)烟气脱硝装置的稳定、高效、经济运行提供借鉴及指导。某3台300 MW级燃煤机组SCR脱硝装置已实现NOx超低排放,以此为例,对其脱硝装置的脱硝效率、进出口NOx浓度分布、出口速度分布、氨逃逸率、SO2/SO3转化率、系统阻力等运行参数进行了评估,掌握了此类机组脱硝装置主要性能。试验结果表明,3台300 MW级燃煤机组脱硝装置整体性能良好,但存在流场不均、飞灰堵塞、氨逃逸超标等问题,为此提出了避免此类问题的方法和建议。

关键词: 燃煤机组, 烟气脱硝, SCR, 超低排放, 性能评估

Abstract: The evaluation and analysis on the ultra-low emission performance of SCR denitrification device can provide reference and guideline for its stable, efficient and economic operation. Taking the SCR denitrification device of three 300 MW coal-fired units with ultra-low emissions for example, the operation parameters are evaluated, such as the denitrification efficiency, the inlet/outlet NOx concentration distribution, the outlet flue gas velocity distribution, the ammonia escape rate, the conversion rate of SO2 into SO3, and the system resistance. Thusthe major properties of the device are obtained. The test results show that the overall performance of the device is good, but there still exist some problems such as flow field imbalance, fly ash clogging and excess ammonia escape. Therefore, the methods and recommendations are proposed to solve such problems.

Key words: coal-fired power generation units, flue gas denitrification, SCR, ultra-low emission, performance evaluation

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