安全仪表系统在乙二醇装置中的应用  

Application of Safety Instrumented System in Ethylene Glycol Plant

作　　者：曹伟俊 孟铎 Cao Weijun;Meng Duo(China Wuhuan Engineering Co.Ltd.,Wuhan,430223,China)

机构地区：[1]中国五环工程有限公司,湖北武汉430223

出　　处：《石油化工自动化》2023年第5期43-46,91,共5页Automation in Petro-chemical Industry

摘　　要：安全仪表系统(SIS)在乙二醇装置中起着重要作用,其设计必须根据草酸二甲酯(DMO)合成反应器的工艺特点及关键联锁回路的安全完整性等级(SIL)定级结果,采用对应SIL等级的现场仪表、控制器、执行元件,最大程度地保证系统的可靠性和安全性。探讨了SIS在乙二醇装置DMO合成反应器上的应用和设计优化,重点阐述了SIS的UPS供电方式、I/O卡件的配置、维护旁路设计等方面内容,为化工装置中SIS的应用提供了可行性方案。Safety instrumented system(SIS)plays an important role in the ethylene glycol plant.It should be designed based on the process characteristics of DMO synthesis reactor and SIL grading results of the key interlock loop.Using the corresponding SIL grade field instruments,controllers and actuators,the reliability and safety of the process system can be ensured at the maximum.The application and design optimization of safety instrumented system in DMO synthesis reactor is discussed.The UPS power supply mode,I/O card configuration,maintenance bypass design and other aspects of the SIS are expounded with stress.It provides a feasible scheme for the application of safety instrumented system in chemical plant.

关 键 词：安全仪表系统 冗余配置 联锁 反应器 执行元件 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]