发电技术 ›› 2022, Vol. 43 ›› Issue (1): 168-174.DOI: 10.12096/j.2096-4528.pgt.20030

• 发电及环境保护 • 上一篇    

1 000 MW燃煤机组SCR超低排放关键参数性能评估与分析

冯前伟1, 朱仁涵2, 徐思达1, 刘博1, 张杨1, 王丰吉1, 朱跃1   

  1. 1.华电电力科学研究院有限公司, 浙江省 杭州市 310030
    2.中国华电集团有限公司福建分公司, 福建省 福州市 350512
  • 收稿日期:2021-06-08 出版日期:2022-02-28 发布日期:2022-03-18
  • 作者简介:冯前伟(1985),男,硕士,高级工程师,主要从事电厂环保设计研究和技术服务工作,fqw0528@sina.com
    朱仁涵(1977),男,高级工程师,主要从事火电厂烟气污染物治理等环境保护技术管理工作,44411345@qq.com
    徐思达(1993),男,硕士,主要从事电厂环保技术服务工作,sida-xu@chder.com
    刘博(1988),男,硕士,主要从事电厂环保技术服务工作,bo-liu@chder.com
    张杨(1985),男,博士,高级工程师,主要从事火电厂环境保护方面的技术研究和技术服务工作,yang-zhang@chder.com
    王丰吉(1980),男,高级工程师,主要从事火电厂环保设施技术研发及管理工作,fengji-wang@chder.com
    朱跃(1962),男,硕士,教授级高级工程师,长期从事锅炉清洁燃烧与燃煤烟气污染治理方面的技术研发和工程化应用设计工作,yue-zhu@chder.com
  • 基金资助:
    国家重点研发计划项目(2017YFB0603201-03)

Performance Evaluation and Analysis of Key Parameters of SCR Ultra-low Emission for 1 000 MW Coal-fired Unit

Qianwei FENG1, Renhan ZHU2, Sida XU1, Bo LIU1, Yang ZHANG1, Fengji WANG1, Yue ZHU1   

  1. 1.Huadian Electric Power Research Institute Co. , Ltd. , Hangzhou 310030, Zhejiang Province, China
    2.Fujian Branch of China Huadian Corporation Ltd. , Fuzhou 350512, Fujian Province, China
  • Received:2021-06-08 Published:2022-02-28 Online:2022-03-18
  • Supported by:
    National Key Research and Development Project of China(2017YFB0603201-03)

摘要:

1 000 MW燃煤机组作为国内先进机组排头兵,对其脱硝装置超低排放改造后的关键参数进行性能评估与分析,可以为燃煤机组超低排放形势下选择性催化还原(selective catalytic reduction,SCR)烟气脱硝装置的稳定安全运行提供借鉴及指导。以已实现脱硝超低排放的某1 000 MW燃煤机组SCR脱硝装置为例,研究了该脱硝装置的脱硝效率,入口、出口NO x 浓度分布,以及氨逃逸浓度等关键运行参数,分析了此台机组脱硝装置的主要性能。试验结果表明:该SCR脱硝装置超低排放改造后整体性能良好,但流场均匀性差、氨逃逸浓度超标等问题仍然存在,应该加强低氮燃烧调整,开展喷氨优化、流场均匀性试验及催化剂全寿命管理等工作。

关键词: 1 000 MW燃煤机组, 选择性催化还原(SCR), 超低排放, 性能评估

Abstract:

1 000 MW coal-fired unit, as one of the best domestic advanced units, the performance evaluation and analysis of the key parameters of its denitrification unit after the ultra-low emission reformation can provide reference and guidance for stable and safe operation of selective catalytic reduction (SCR) flue gas denitrification unit under ultra-low emission of coal-fired units. Taking the SCR denitrification unit of a 1 000 MW coal-fired unit that had achieved ultra-low denitrification emission as an example, the key operating parameters of the SCR denitrification unit were studied, such as denitrification efficiency, NO x concentration distribution at the inlet and outlet, ammonia escape, etc., the main performance of the denitrification unit was analyzed. The test results show that the overall performance of the SCR denitrification unit is good after the ultra-low emission transformation, but the problems of poor flow field uniformity and excessive ammonia escape still exist. Therefore, the adjustment of low nitrogen combustion, the optimization of ammonia injection, the uniformity test of flow field and the life-cycle management of catalyst should be strengthened.

Key words: 1 000 MW coal-fired unit, selective catalytic reduction (SCR), ultra-low emission, performance evaluation

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