Failure analysis of 101-C ammonia plant heat exchanger

被引：16

作者：

Jahromi, SAJ ^{[1
]}

AliPour, MM ^{[1
]}

Beirami, A ^{[1
]}

机构：

[1] Shiraz Univ, Sch Engn, Dept Mat Sci & Engn, Shiraz, Iran

来源：

ENGINEERING FAILURE ANALYSIS | 2003年 / 10卷 / 04期

关键词：

boiler tube; creep; overheating; oxidation; corrosion;

D O I：

10.1016/S1350-6307(03)00016-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Long-term overheating is a major cause of failures in boiler tubes of different designs and operation conditions. These failures are usually related to the formation and growth of internal oxide scales or deposits at areas of high beat flux. Deposits might have different sources; poor water treatment and general corrosion in the system are two common types of these sources. Thickening of the deposit layer hinders heat transfer and local spots of high metal temperature are created in the tube wall. With increasing metal temperature, creep becomes much faster leading to tube failure under internal pressure. In this paper, a case history involving this type of failure is presented. Using finite element modeling the failure are analyzed and some methods to prevent this type of failure are recommended. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：405 / 421

页数：17