| Refining and refining system process is complex,frequent changes in working conditions,more related factors,process media are mostly toxic and harmful,flammable and explosive dangerous chemicals,process conditions are mostly high temperature,high pressure.Refining unit accidents not only cause property damage,environmental pollution,many times threaten the lives of staff safety.Therefore,in the process of refining production,safety warning,the accident in the bud is very important.The correct design of the safety early warning system can control all kinds of dangerous situations which may occur in the device.It is one of the important contents of the safety early warning design of the air separation device.In this paper,the dynamic model corresponding to the unit gas analyzer is established by theoretical analysis,site investigation and simulation verification,and the dynamic risk assessment method of the petrochemical system is successfully applied to the gas separation device.The following main work of this article:(1)Analysis of the mechanism and characteristics of safety early warning system and emergency management information system.As the gas device equipment is obsolete,the relevant pipeline is complex,affecting the safety production process parameters than the new operation device,for the device on the joint pipeline and its impact on the relevant equipment process is also more complex.This safety warning system realizes the real-time threshold monitoring and prediction of single parameters based on the status monitoring of the on-line production process data acquisition,combined with the hazard and operability analysis(HAZOP)to diagnose the cause of the alarm parameters and provide the operator with the recommended measures.(2)Based on the process flow chart of the gas separation device,according to the process characteristics of the unit gas analyzer,select the key parameters of the process,list the important process parameters affecting the process segments,select the process parameters according to the important parameters of the process parameters,The SD model of the subsystem is established and the subsystems are combined into a complete system.Combined with gas DCS and MES system,using OPC technology,to carry out data acquisition topology and physical network interface research,access to real-time data running device.(HAZOP)analysis of chemical plant safety and operability.Finally,thesafety early warning and emergency management information system research and development.(3)The fault diagnosis and alarm prediction software includes data acquisition,fault monitoring and alarm,alarm information filtering,fault root diagnosis,and fault development prediction and emergency rescue.After the system is put into operation,its running condition is good,the field application results show that the software can filter more than 50% of the non-priority alarm information,and can accurately find the impact of failure factors,and quantitative development of the quantitative forecast,so that operators The first time to find the problem,solve the problem.At the same time,the failure rate is reduced,the anti-jamming capability of the device is improved,which is beneficial to reduce the cost,reduce the energy consumption and reduce the profit of the device,and improve the automatic operation level of the gas separation device. |
PDF Full Text Request