Design Of Oil And Gas Recovery Processing System For Oil Terminal

In recent years,with the increasing awareness of national environmental protection,enterprises have increased their investment in oil and gas recovery equipment.In order to reduce the emission of oil and gas pollution from gas stations,oil warehouses,oil terminals and other places,China has formulated standards for the emission of air pollutants during the storage,transportation and sale of oil products,and put them into use successively.According to the “12th five-year plan” for preventing and controlling air pollution issued by the state council in key areas,cities that are included in key areas of air pollution control must finish oil and gas pollution treatment at oil depots,gas stations and tank cars by the end of 2014.Therefore,enterprises need to further improve the efficiency of oil and gas recovery and treatment,reduce environmental pollution.This paper analyzes the working principle,main structure,process flow and automatic control flow of the oil and gas recovery and treatment device,adopts PLC control system to control the oil and gas recovery and treatment device,so that the oil and gas in condensation,adsorption,low temperature catalytic oxidation control aspects of automatic regulation.In the hardware configuration and software design of the core PLC control system,PAC8000 PLC series modules from GE are used for the hardware,and Proficy editing software from GE is used for the software.This paper completes the automatic control scheme of the system: the oil and gas recovery processing system USES the method of frequency converter and PLC,by changing the frequency converter to adjust the number of roots fan,and then adjust the oil and gas flow;The condensing process USES the combination of refrigeration compressor and PLC to realize oil and gas condensing recovery,safe operation of the device and equipment fault alarm.The oil and gas flow adopts automatic control,which can effectively improve the accuracy of oil and gas flow control and the stability of the system.Finally,MCGS touch screen and PLC are used as man-machine interface to monitor,operate and set parameters of the system.The automatic control system can further improve the oil and gas recovery and treatment efficiency and reduce environmental pollution.At the same time,the mutual influence relationship between various modules is established to facilitate the troubleshooting of equipment,ensure the stable operation of oil and gas recovery and treatment device,reduce maintenance cost and improve modern management level.