脱硫装置碱液管线开裂原因分析及应对措施  

Causation Analysis and Countermeasures of Cracking of Lye Line in Desulfurization Unit

作　　者：高才渊 Gao Caiyuan(CNOOC Zhoushan Petrochemical Co.,Ltd.,Zhoushan,Zhejiang 316000)

机构地区：[1]中海石油舟山石化有限公司,浙江舟山316000

出　　处：《石油化工技术与经济》2024年第5期45-48,共4页Technology & Economics in Petrochemicals

摘　　要：中海石油舟山石化有限公司脱硫装置碱液管线多次出现开裂现象,文章结合实际案例和理论分析,探讨了碱液管线的腐蚀机理及开裂原因。研究结果表明:材料组成、操作环境、焊接应力和热处理不足是导致碱液管线开裂的主要因素,基于此,提出了控制伴热温度、优化材料选择、改进工艺设计、控制操作条件、优化热处理和吹扫方法等综合应对措施,以提高碱液管线的使用寿命和安全性。Cracking occurred many times in the lye pipeline of the desulfurization unit of CNOOC Zhoushan Petrochemical Co.,Ltd.Based on practical cases and theoretical analysis,the corrosion mechanism and cracking reasons of the lye pipeline are discussed.The results show that material composition,operating environment,welding stress and insufficient heat treatment are the main factors leading to cracking of lye pipeline.Therefore,comprehensive countermeasures such as controlling heating temperature,optimizing material selection,improving process design,controlling operating conditions,optimizing heat treatment and optimizing purging methods are proposed to improve the service life and safety of lye pipeline.

关 键 词：碱液管线 开裂 腐蚀机理 应力腐蚀开裂 防护措施 焊接应力 热处理 

分 类 号：TE986[石油与天然气工程—石油机械设备]