加氢装置高压窜低压风险评估与设计整改

RISK ASSESSMENT AND DESIGN RECTIFICA-TION OF HIGH-PRESSURE MATERIALS BACK-FLOWING TO LOW-PRESSURE SYSTEM IN HYDROGENATION UNITS

石油化工生产中,加氢装置为高压临氢装置,易发生高压窜入低压系统的事故,中石化某企业2018年“3.12”加氢装置高压窜低压事故教训十分深刻。为防止高压物料逆流至低压系统,应对工艺流程、设备及系统联锁进行风险评估,找出事故发生的风险点,制定安全可靠的预防措施,通过设计改造消除隐患,确保装置达到本质安全条件,防患于未然。

In petrochemical production,hydrogenation unit is a high-pressure hydrogen device,which is prone to accidents of high-pressure materials backflowing to low-pressure systems.The lesson of the“3.12”high-pressure materials backflowing to low-pressure accident of the hydrogenation unit in a SINOPEC enter-prise in 2018 is very profound.In order to prevent the high pressure materials from flowing back to the low pressure system,risk assessment should be carried out on the process flow,equipment and system interlock to find out the risk points of accidents and formulate safe and reliable preventive measures.Through design mod-ification,hidden dangers can be eliminated to ensure that the device meets the intrinsic safety conditions and to nip the dangers in the bud.