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浙江国华宁海电厂位于浙江宁波象山港底部,临海而建.为保持海洋生态环境,按照海洋评价等级2级的标准,宁海电厂二期扩建工程2×1 000 MW超临界机组设计2座13 000 m2双曲线自然通风海水冷却塔,工程规模及防腐设计为亚洲首例.其特点是采用海水冷却循环,海水对钢筋混凝土有很强的腐蚀作用,因此涂层防腐施工尤为关键及重要.通过采用环氧底漆、聚氨酯施工工艺防腐的有效措施,增强防腐层与混凝土的封闭性及耐久性,以确保海水冷却塔的安全运行,并取得了理想效果.重点从海水冷却塔、防腐涂料施工、防腐工程的特点几个方面进行论述总结.
Zhejiang Guohua Ninghai Power Plant is located at the bottom of Xiangshan Port in Ningbo, Zhejiang Province, and is built by the sea. To maintain the marine ecological environment, according to the standard of Grade 2 of marine evaluation, 2 13000MW supercritical units of the second phase of Ninghai Power Plant m2 hyperbolic natural ventilation sea water cooling tower, the project scale and anti-corrosion design for the first time in Asia.Its characteristics is the use of seawater cooling cycle, the seawater has a strong corrosion of reinforced concrete, the anti-corrosion coating construction is particularly crucial and important.Through the use of Epoxy primer, polyurethane anticorrosive construction process effective measures to enhance the confinement and durability of the anticorrosive layer and concrete to ensure the safe operation of the sea water cooling tower, and achieved the desired results.Focus from the sea water cooling tower, anti-corrosion coating construction, Anti-corrosion project features several aspects of the summary.