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化肥装置145t/h蒸汽锅炉水冷壁管爆裂分析

Analysis of Cracking of Water Cooling Wall Pipe of 145t/h Steam Boiler
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摘要 为查明某化肥装置A锅炉水冷壁管爆裂原因,对爆裂的水冷壁管进行了失效分析。结果表明:水冷壁管向火面材料在高温区长时间运行,组织劣化,发生严重球化,导致材料强度降低;锅炉介质变化较大,发生氧化层下的氢腐蚀,导致材料变脆;管内为高温高压的锅炉水,管壁存在较大的拉应力、内外壁存在较大温差引起的热应力、锅炉停启过程形成的应力使得水冷壁管发生爆裂。
出处 《化工机械》 CAS 2018年第4期488-491,共4页 Chemical Engineering & Machinery
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