发电技术 ›› 2018, Vol. 39 ›› Issue (6): 546-553.DOI: 10.12096/j.2096-4528.pgt.18238

• 火电及环境保护 • 上一篇    下一篇

湿法脱硫对电厂钢筋混凝土烟囱的腐蚀及防腐方法研究

王中伟1(),孙君建2,赵立春3,郑大维3,李响4,乔万军5,缪红波6,武正华3   

  1. 1 国家电投东北电力有限公司, 辽宁省 沈阳市 110181
    2 辽宁清河发电有限责任公司, 辽宁省 铁岭市 112003
    3 辽宁东方发电有限公司, 辽宁省 抚顺市 113007
    4 国网辽宁电科院, 辽宁省 沈阳市 110181
    5 河南达亨电力实业有限公司, 河南省 郑州市 450000
    6 北京固斯特国际化工有限公司, 北京市 朝阳区 100123
  • 收稿日期:2018-07-28 出版日期:2018-12-31 发布日期:2018-12-28
  • 作者简介:王中伟(1963),男,高级工程师,主要从事火电厂环境保护,包括脱硫、脱硝、脱汞等以及膜与水处理技术领域的研究和应用, 15904051604@163.com

Study on the Anticorrosive Methods for Reinforced Concrete Structure Chimney of Power Plant Caused by Wet Desulfurization

Zhongwei WANG1(),Junjian SUN2,Lichun ZHAO3,Dawei ZHENG3,Xiang LI4,Wanjun QIAO5,Hongbo MIAO6,Zhenghua WU3   

  1. 1 National Power Investment Northeast Electric Power Co., Ltd., Shenyang 110181, Liaoning Province, China
    2 Liaoning Qinghe Power Generation Co. Ltd., Tieling 112003, Liaoning Province, China
    3 Liaoning Dongfang Power Generation Co. Ltd., Fushun 113007, Liaoning Province, China
    4 State Grid Electric Power Research Institute Liaoning, Shenyang 110181, Liaoning Province, China
    5 Henan Daheng Power Industry Co. Ltd., Zhengzhou 450000, Henan Province, China
    6 Beijing Köster International Chemistry Co., Ltd., Chaoyang District, Beijing 100123, China
  • Received:2018-07-28 Published:2018-12-31 Online:2018-12-28

摘要:

探讨了钢筋混凝土结构烟囱湿法脱硫后存在的腐蚀问题,以及因腐蚀所导致的混凝土结构的变化。防腐体系层除了具备基本的防腐蚀及抗渗性能外,还要考虑混凝土烟囱内部结构含有盐类介质。脱硫运行后,因漏水导致的对烟囱重新进行防腐维修,防腐体系与烟囱结构如何可靠黏结的问题,成为行业内的一个新课题。通过对目前国内常用的几种防腐方案优缺点的比较,分析了徳国固斯特烟囱防腐材料成功使用的机理及其特点和优势。

关键词: 混凝土烟囱, 防腐, 湿法脱硫, 盐类介质, 材料选择, 固斯特

Abstract:

In this paper, the problem of corrosion in the reinforced concrete chimneys after being processed using wet desulfurization is discussed, and the changes within the structure of the concrete caused by acidic corrosion are analyzed. In addition to the basic anti-corrosion and impermeability, the anti-corrosion system must face the reality that the internal structure of the concrete chimneys contains salt. After desulfurization, there appears a new topic in the industry, i.e. how to keep reliably bonded of the anti-corrosion system and the chimney structure after the anti-corrosion maintenance of the chimney impaired by water leakage. Through comparison of the advantages and disadvantages of several anti-corrosion schemes commonly used in China, this paper analyzes the mechanism, characteristics, and advantages of anticorrosive systems successfully applied for chimneys provided by Köster.

Key words: concrete chimney, anti-corrosion, wet desulfurization, salt medium, material selection, Köster