炼油厂Cr5Mo工艺管线的蠕变损伤及剩余寿命  

Creep Damage and Remaining Life of CrSMo Conduct Pipeline in Refinery

作　　者：李培宁[1] 宋超骅 冯韵芬 葛修鑫 张金权 刘竞扬 

机构地区：[1]华东化工学院 [2]高桥石化公司炼油厂

出　　处：《压力容器》1992年第1期20-27,共8页Pressure Vessel Technology

摘　　要：我国炼油厂重整、加氢精制和热裂化三套装置中的高温临氢工艺管线普遍采用Cr5Mo钢管。Cr5Mo工艺管线是在高温临氢条件下工作的,在蠕变温度范围内材料在外载的作用下,应变会随着时间的增长而增加,最后导致断裂。作为高温部件必须考虑其蠕变损伤和蠕变残余寿命。试验结果表明,对工作温度为500℃,服役10000小时的炼油厂重整装置中的Cr5Mo管件及其焊接接头,由于其承受的一次应力很低,故蠕变损伤是不明显的。结果还表明,Cr5Mo管件的剩余寿命不受蠕变的控制,而其最大潜在的危险来自于材料的脆性。Experimental result showed that the creep damage of the Cr5Mo conduct piping and its weld joint, which have served at 500℃ in the reforming units of a refinery for 100000 hours, is not obvious because of the low primary stress. It is concluded that the remaining life of the Cr5Mo conduct pipeline is not controlled by creep rupture. The most potential failure mode is brittle fracture for brittleness and embrittling.

关 键 词：寿命 油气管 炼油厂 蠕变损伤 

分 类 号：TE973.107[石油与天然气工程—石油机械设备]