Design And Implementation Of Diesel Hydrotreating Circulating Hydrogen Compressor Control System

The centrifugal compressor is a vane rotary compressor, it has become the most commonly used compressor type in the industrial production today,and widely used in petroleum,chemical,metallurgy,mining,etc. Centrifugal compressors play a key role in compressed and transport gas of chemical production, equivalent to the heart of the large-scale production plant. It is the most important equipment to ensure the compressor group safe, reliable, stable uninterruptedly working. But,except the formal protect,centrifugal compressor still has some defects who's connatural and difficult to eliminate.For example,the steady workspace is too narrow,surge is easy to creat,etc.It may cause a serious accident for slight deviation. The accident usually happened in such a quick and violent way that manual handling can not manage at all.The primitives of this architecture is 2 million t/y diesel hydrogenation unit control system of a petrochemical company refinery.Frames design of control system has been completed,and introducted a composite control strategy of compressor, build a control system architecture, propose recycle hydrogen centrifugal compressor control strategy,considered the possible factors in the operating of compressor more widely,analysis control functions,such as alarm,trip,oil pressure,made a depth study of anti-surge and governer control.Designed and implemented the control system structure that based on the TS3000 logic controller,Intouch HMI software as the core operation of compressor monitoring platform was developed,it includes Point List, Alarm Page, Trip Page, Technics Page and Start Page,etc.It makes operation and monitoring more reasonable and simple in the process of transmit and pressure which diesel hydrogenation compressor to hydrogen. and provide a positive role in the stable operation of the centrifugal compressor system.For the problem of control system which may actually happened in the recycle hydrogen the centrifugal compressor group operating characteristics and process, the control program combines on-site process requirements were modified to ensure the compressor units can satisfied the process of production,to realize the compressed hydrogen gas,made the diesel desulfurization and denitrification.