氯化洗浆机转鼓腐蚀原因分析与对策

An analysis of causes for ero-sion in rotating drum of pulp washer after chlorination and countermeasures

常规漂白(CEHP)中的C段介质腐蚀性强、设备防腐难度大、防腐技术质量要求高、防腐蚀失效维修难等问题较为突出。针对漂白氯化段的腐蚀环境和腐蚀机理及氯化洗浆机常规防腐蚀失效的原因进行探讨,并提出了若干改进建议。

Such problems are prominent as the high causticity of medium, great degree of difficulty in equipment anticorrosion, high quality requirements for anticorrosion technology and high difficulty in maintenance for the corrosion protection malfunction in the C stage of traditional CEHP bleaching. Based on the investigation of the corrosive environment and mechanism of corrosion of the bleaching and chlorination stage and the causes for the malfunction in traditional corrosion protection of pulp washer, several improvement proposals are put forward.