Application of the Emergency Shutdown-Distributed Control System(ESDDCS) in No.1 Natural Gas Processing Plant of CNPC International(Turkmenistan)

The Emergency Shutdown-Distributed Control System(ESDDCS) is a safe,reliable,advanced production management and control technique in natural gas treating field.Located on the right bank of Amudarya in Turkmenistan,Samandepe gas field of Bagtiyarlyk Contract Area is a main gas field with high sulfur content,it is a productive condensate gas field with an annual natural gas output of 5×109 m3～6×109 m3.According to the characteristics of complex composition in raw natural gas,large numbers of production equipment,complete production process and large quantity output,the natural gas purification process adopts Distributed Control System(DCS) and Emergency Shutdown Device(ESD),and achieves requirements for safety,reliability,energy saving and environmental protection.The design and process control are of advancements in this field.