克劳斯尾气焚烧炉余热锅炉的露点腐蚀及防护措施

Corrosion & Protection in Petrochemical Industry(2021)

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Abstract
某天然气净化装置尾气焚烧余热锅炉换热管发生腐蚀泄漏.采用外观检查、无损检测、腐蚀产物成分分析和形貌观察等手段对余热锅炉换热管进行检测分析,结果表明,该尾气焚烧余热锅炉换热管的腐蚀失效是硫酸露点腐蚀及硫酸盐共同作用的结果.提出了空气吹扫、干燥氮气保护、修改焚烧炉底部设计和稳定操作等防护措施.
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