硫磺回收装置余热锅炉过热器弯头开裂原因初步分析

Preliminary Analysis on Tube Cracking Cause of Waste Heat Boiler Superheater of the Sulfur Recovery Unit

炼化企业硫磺回收装置在整个生产系统中起着重要作用,而余热锅炉过热器是装置的关键组成部分,由于工况苛刻且较为复杂,曾有过热器弯头开裂案例报导,通过对弯头开裂部位宏观检查、测厚、光谱分析、金相检验、硬度测定及炉灰垢样化学成分分析等方面综合检验检测,分析了开裂的产生原因及其对余热锅炉过热器安全运行的影响,并提出了相应的预防与控制措施。

Refinery sulfur recovery unit plays an important role in the entire production system, and the waste heat boiler superheater is the key component of the device. Because the condition is demanding and complex, the case of superheater elbow cracking was once reported. Through the comprehensive examination and test on the macroscopic test about Elbow cracking parts, thickness measurement, spectrum analysis, metallographic examination, hardness testing and chemical components analysis of stove ash fouling etc, the cause of cracking and the impact of the waste heat boiler superheater and its safe operation wasanalyzed, then the corresponding prevention and control measure is proposed.