160万吨/年溶剂脱沥青装置低压溶剂回收系统腐蚀防护研究  

Study on Corrosion Protection of Low Pressure Solvent Recovery System in 1.6 Million tons/year Solvent Deasphalting Unit

作　　者：徐建 XU Jian(CNOOC Ningbo Daxie Petrochemical Co.,Ltd.,Ningbo 315812,China)

机构地区：[1]中海石油宁波大榭石化有限公司,宁波315812

出　　处：《价值工程》2023年第10期140-142,共3页Value Engineering

摘　　要：某石化公司正丁烷溶剂脱沥青装置设计规模为160万吨/年,装置实际生产过程中,受装置供料减底渣油含硫含氯等影响,装置低压溶剂回收系统存在明显的腐蚀现象,给溶脱装置长周期安全稳定运行带来很大压力。本文对引起溶脱装置腐蚀的主要原因进行分析,针对分析出的原因研究相应的防腐方案,通过技改和操作优化等手段将防腐方案加以实施,通过不断的优化和调整,目前装置腐蚀速率下降明显,取得较好的防腐效果,为装置长周期运行打下了坚实的基础。The design capacity of a petrochemical company's n-butane solvent deasphalting unit is 1.6 million tons per year.During the actual production process of the unit,due to the influence of the unit's feed reduction,sulfur and chlorine content in the bottom residue,there are significant corrosion phenomena in the low-pressure solvent recovery system of the unit,which puts great pressure on the long-term safe and stable operation of the stripping unit.This article analyzes the main causes of corrosion in the stripping unit,studies corresponding anti-corrosion schemes based on the analyzed causes,and implements the anti-corrosion schemes through technical transformation and operation optimization.Through continuous optimization and adjustment,the corrosion rate of the unit has decreased significantly,achieving good anti-corrosion effects,laying a solid foundation for long-term operation of the unit.

关 键 词：溶脱装置 腐蚀 缓蚀剂 

分 类 号：TE624[石油与天然气工程—油气加工工程]