【作者】 王威；

【导师】 王伟杰；

【作者基本信息】 哈尔滨工业大学 ， 机械工程（专业学位）， 2021， 硕士

【摘要】 安全仪表系统(SIS)主要包括装置区内安全联锁、紧急停车以及有毒可燃气体监测等系统;其独立于常规控制系统,在正常的生产过程中处于静止或者休眠状态,一旦装置中生产设备的相关参数出现可能造成生产事故的偏离,可瞬时进行精准动作,将设备或生产过程自动导入至预设的安全状态;这就需要安全仪表系统有较高的可靠性(即失效概率极低),若是配套的安全设施失效,通常情况下会造成重大的安全问题。本课题研究了辽河石化公司润滑油高压加氢项目设计中,基于HAZOP分析结果的装置安全完整性等级评估及安全仪表系统的选用。首先结合工艺流程、现场配置及装置PID图纸选用合适的节点对润滑油加氢装置进行HAZOP分析,判断现有的设计方案和保护措施是否满足装置的安全需求;随后依据装置的HAZOP分析结果选用合适的安全仪表功能回路,使用定量与定性分析相结合的方案,开展装置的安全完整性评估工作,确认每一个回路的安全完整性等级;同时结合项目的安全完整性等级选择相应的安全仪表系统配置,对不合理的安全仪表功能回路开展优化设计,通过该方式来实现采购设备与冗余方案之间的科学配置,在保证安全仪表系统的各个组成部分均具备较高可靠性的前提下,减少整体采购投入。更多还原

【Abstract】 Safety instrument system(SIS)mainly includes safety interlocking,emergency shutdown,toxic and combustible gas monitoring and other systems in the unit area;it is independent of the conventional control system and is in a static or dormant state in the normal production process.Once the relevant parameters of the production equipment in the unit may cause deviation of production accidents,it can conduct instantaneous and accurate action to automatically import the equipment or production process into the plant Preset safety status;This requires that the safety instrument system has high reliability.If the supporting safety facilities fail,it will usually cause major safety problems.This paper studies the safety integrity level evaluation of the unit and the selection of safety instrument system based on the HAZOP analysis results in the design of lubricating oil high-pressure hydrogenation project of Liaohe Petrochemical Company.Firstly,according to the process flow,field configuration and PID drawings of the unit,select appropriate nodes to conduct HAZOP Analysis on the lubricating oil hydrogenation unit,and judge whether the existing design scheme and protection measures meet the safety requirements of the unit;Then,according to the HAZOP analysis results of the device,select appropriate safety instrument functional circuits,use the scheme combining quantitative and qualitative analysis to carry out the safety integrity assessment of the device and confirm the safety integrity level of each circuit;At the same time,the corresponding safety instrument system configuration is selected in combination with the safety integrity level of the project,and the unreasonable safety instrument function circuit is optimized.In this way,the scientific configuration between the purchased equipment and the redundancy scheme is realized,and the overall procurement investment is reduced on the premise of ensuring that all components of the safety instrument system have high reliability.更多还原