压力容器
壓力容器
압력용기
2014年
6期
58-63
,共6页
重整抽提装置%再生器%沿晶开裂%超温
重整抽提裝置%再生器%沿晶開裂%超溫
중정추제장치%재생기%연정개렬%초온
reforming extraction unit%regenerator%intergranular cracking%over-temperature
介绍了某石化重整抽提装置再生器器壁开裂情况。通过对工艺运行状况分析、开裂部位的宏微观检验、化学成分分析和厚度测试等检验，分析材料因长期在敏化温度下工作造成材质敏化，加之局部超温，伴随内部压力的作用，发生沿晶开裂，随着裂纹的延伸加剧，形成脆性孔洞，直至穿透器壁。
介紹瞭某石化重整抽提裝置再生器器壁開裂情況。通過對工藝運行狀況分析、開裂部位的宏微觀檢驗、化學成分分析和厚度測試等檢驗，分析材料因長期在敏化溫度下工作造成材質敏化，加之跼部超溫，伴隨內部壓力的作用，髮生沿晶開裂，隨著裂紋的延伸加劇，形成脆性孔洞，直至穿透器壁。
개소료모석화중정추제장치재생기기벽개렬정황。통과대공예운행상황분석、개렬부위적굉미관검험、화학성분분석화후도측시등검험，분석재료인장기재민화온도하공작조성재질민화，가지국부초온，반수내부압력적작용，발생연정개렬，수착렬문적연신가극，형성취성공동，직지천투기벽。
The crack of regenerator walls in a petrochemical reformer extraction unit was introduced. The process operating conditions,macro and micro examination of cracking position,chemical composition and thickness test were analyzed. The result is that the material work in the sensitized temperature for a long time,causing material sensitization. Along with the local over-temperature and the role of internal pres-sure,lead to intergranular crack. Eventually,the crack penetrates the regenerator walls by the crack ex-tending to brittle holes.
