中国电力 ›› 2014, Vol. 47 ›› Issue (7): 150-155.DOI: 10.11930/j.issn.1004-9649.2014.7.150.5

• 节能与环保 • 上一篇    下一篇

国产首套尿素水解装置在大型火电厂的工业应用及技术优化

惠润堂1, 韦飞1, 闫世平2, 刘曙东2, 杨爱勇1, 姜艳靓1, 3, 郑伟4   

  1. 1. 国电环境保护研究院,江苏 南京 210031;
    2. 国电内蒙古东胜热电有限公司,内蒙古 鄂尔多斯 017000;
    3. 南京信息工程大学 环境科学与工程学院,江苏 南京 210044;
    4. 成都锐思环保技术有限责任公司,四川 成都 610091
  • 收稿日期:2014-04-10 出版日期:2014-07-18 发布日期:2015-12-10
  • 作者简介:惠润堂(1963—),男,陕西渭南人,高级工程师,主要从事火电厂环保工程设计、科技研发等工作。E-mail: huiruntang@vip.163.com

The Industrial Application and Technical Optimization of First Domestically-Made Urea Hydrolysis Unit in Large Power Plants

HUI Run-tang1, WEI Fei1, YAN Shi-ping2, LIU Shu-dong2, YANG Ai-yong1, JIANG Yan-liang1, 3, ZHENG Wei4   

  1. 1. State Power Environmental Protection Research Institute, Nanjing 210031, China;
    2. Guodian Inner Mongolia Dongsheng Thermal Power Co., Ltd., Erdos 017000, China;
    3. School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    4. Chengdu Raise Environmental Technology Co., Ltd., Chengdu 610091, China
  • Received:2014-04-10 Online:2014-07-18 Published:2015-12-10

摘要: 随着GB 13223—2011《火电厂大气污染物排放标准》的颁布,大批火电机组均需建设SCR烟气脱硝装置。出于对安全生产的考虑,所使用的还原剂将会逐步改液氨为尿素。以往尿素水解主要依赖进口技术,烟气脱硝尿素水解装置国产化可避免对进口技术的依赖,并可减少脱硝运行成本。以首套国产化尿素水解装置的工业应用为例,介绍国电东胜热电厂2×330 MW机组脱硝工程国产尿素制氨系统的特点、运行效果及其关键技术优化。运行实践表明,所设计、制造的国产化尿素水解装置可靠性良好,整体运行稳定,负荷跟踪满足设计要求,各项参数合理。所得经验可为同类烟气脱硝工程的设计、安装、调试提供借鉴。

关键词: 烟气脱硝, 选择性催化还原(SCR), 尿素水解, 国产化

Abstract: With the promulgation of the national standard of Emission Standard of Air Pollutants for Thermal Power Plants(GB 13223-2011), the selective catalytic reduction (SCR) flue gas denitrification devices shall be built in a large number of coal-fired generating units, Ammonia will be gradually replaced by urea for safety. In the past, the urea hydrolysis technology is mainly dependent on importation. The domestically-manufactured urea hydrolysis devices can reduce the operating costs and avoid the dependence on the imported technology. In this paper, the characteristics, operating results and key technical optimization of the first set of domestically-made ammonia preparation system for two 330-MW units in Dongsheng Power Plant with urea for denitrification are introduced. The operating practice shows that the reliability of the system is quite good; the overall system operation is stable and can meet the design requirement of load following. The project can be a reference for the design, installation and debugging of the flue gas denitrification systems of the same kind.

Key words: flue gas denitrification, selective catalytic reduction (SCR), hydrolysis of urea, localization

中图分类号: