重催CO过热器炉管失效分析

FAILURE ANALYSIS OF SUPERHEATER TUBES IN CATALYTIC REFORMING CARBON MONOOXIDE

材质为12Cr1MoV的重催CO高温加热炉管,在服役25000h后发生胀管破裂。采用电镜、X射线、金相等测试技术对失效的原因进行分析后,判断本起失效的原因为长时间低幅度超温运行导致的蠕变开裂。

The superheater tubes for catalytic reforming CO made of 12CrlMoV steel were broken after being used for 25000 hours. The reason of failure was analyzed by TEM, X-ray and metallographical examination. It is concluded that this failure was caused by creep and cracking at a relatively high temperature for a long time.