The main reason which causes the breakdown of marine boiler superheater is its inner corrosion, which is taken to be developed from the parts of tube top to entire top, and this leads to leakage.
Measures should be taken to prevent the vertical snake tube from steam binding, iron oxide depositing, and austenite corrosion when superheater is cleaned.
过热器整体清洗时,应有防止垂直蛇形管产生汽塞、铁氧化物沉淀和奥氏体腐蚀的措施。
3
Abrasion and corrosion of heating surface, superheatertube cracking and weld leakage are the main cause of waste heat boiler breakdown in sulphuric acid plant.