双重预防机制在二催化装置中的应用

Application of Double Prevention Mechanism in No.2 FCC Unit

二催化装置生产工艺复杂,涉及物料大多易燃易爆、有毒有害,发生事故后果非常严重。做到准确识别、科学管控风险,及时排查治理隐患是提高安全管理水平、遏制事故发生的有效措施。本装置利用双重预防机制,识别出液态烃泵机封泄漏引起火灾爆炸事故的较大风险,通过采取对液态烃罐与机泵之间增加紧急切断阀、液态烃泵进行机封改造等措施,使风险受控。通过隐患排查发现液态烃罐玻璃板引压线腐蚀减薄,采取措施控制隐患,避免事故发生。

The production process of 2﹟FCC Units is complex and most of the materials involved are inflammable,explosive,toxic and harmful.Once accident happens,the consequences are very serious.The effective measures to improve the safety management level and prevent accidents are to identify risks accurately,manage and control risks scientifically,and check and control hidden dangers timely.This 2﹟FCC Unit uses the double prevention mechanism to identify the greater risk of fire and explosion accidents caused by leakage of the mechanical seal of the liquid hydrocarbon pump.Through such measures as adding emergency shut-off valve between the liquid hydrocarbon tank and the liquid hydrocarbon pump,the mechanical seal transformation of the liquid hydrocarbon pump and so on,the identified risks are under control.Through the hidden danger investigation,it is found that the glass plate pressure line of the liquid hydrocarbon tank is corroded and thinned,and corresponding measures are taken to control the hidden dangers and avoid accidents.