摘要
介绍了镇海炼油化工股份有限公司第Ⅲ套常减压加工高硫原油时塔顶系统的腐蚀较严重,曾多次发生泄漏。分析其主要原因为：电脱盐合格率低；加工原油的劣质化；“三注”工艺落后。针对上述原因采取了以下工艺防腐措施：提高电脱盐合格率；改注油溶性缓蚀剂及有机胺；完善注水设施；严格控制常顶污水的pH值；应用在线监测技术；建立常顶离子防腐模型；成立防腐技术攻关小组等。这些措施实施后,取得了较好的防腐效果。
Since the third set of atmospheric vac- uum unit in Zhenhai Petrochemical Company Ltd.processes high sulfur crude oil,the over- head system of this unit has occurred several times of leakage because of its serious corrosion. The main causes of leakage analyzed in this arti- cle are:lower qualified rate of electric desalting, lower quality of crude oil processed and poor“three injection”process.According to the afore- said reasons,the process corrosion protection measures have been adopted,improve the quali- fied rate of electric desalting;inject oil-soluble inhibitor and organic nitrogenous;consummate water injection facility;strictly control pH value of waste water on the top of atmospheric unit; apply on-line monitoring technology;establish ion corrosion protection model on the top of at- mospheric unit and form a team to tackle corro- sion protection technology.After implementa- tion of these measures,better corrosion protec- tion effect has been obtained.
出处
《石油化工设备技术》
CAS
2006年第2期48-49,54,共3页
Petrochemical Equipment Technology
关键词
常减压
高硫原油
“一脱三注”
监测
Atmospheric and vacuum unit
High sulfur crude oil
“One-removal and three-injection”
Monitoring
