加氢换热器壳程出口弯头开裂失效分析  

Crack failure analysis of the elbow on the shell outlet of hydrogenation heat exchanger

作　　者：柴可良[1] 彭琼[1] 郭志军[2] 钟彦平[2] 

机构地区：[1]中石油兰州石化炼油厂,甘肃兰州730060 [2]兰州石油机械研究所,甘肃兰州730050

出　　处：《石油化工设备》2003年第2期15-17,共3页Petro-Chemical Equipment

摘　　要：E30 1B换热器壳程出口弯头与第一个变径接管法兰焊缝处发现一长 2 6mm的横向穿透性裂纹 ,解剖弯头后 ,发现在内壁近缝区还有大量横向裂纹 ,分析确认这些裂纹是起源于焊接延迟裂纹的湿硫化氢应力腐蚀开裂。A horizontal permeability crack of 26mm long was found on weld seam between the elbow of E310B heat exchanger shell outlet and the first reducing nozzle flange.Plenty of horizontal cracks were found on its inner wall near the seam after dissection of the elbow. Through analysis, it is determined that the cracks are caused by wet-H 2S on weld delay crack.

关 键 词：加氢换热器 壳程 出口弯头 开裂失效 炼油 

分 类 号：TE965[石油与天然气工程—石油机械设备]