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

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.

Keywords

• concrete chimney
• anti-corrosion
• wet desulfurization
• salt medium
• material selection
• köster