Gas liquefaction process control system

Details Gas liquefaction process control system Gas liquefaction process control system

F - Mech Eng,Light,Heat,Weapons

25

J

F25J 3/02 (2006.01) F25J 1/02 (2006.01) G05B 13/02 (2006.01)

Patent

CA 2074654

PATENT - 211PUS03923 ABSTRACT A method for controlling the operation of a liquefied natural gas (LNG) process which utilizes gas turbine-driven refrigeration compressors is disclosed. A feedforward control system compensates for the effects of changes in ambient air temperature on the plant operating efficiency by periodically predicting a new temperature and resetting the set points of key feedback controllers in anticipation of this new temperature, thereby optimizing the operation of the plant and minimizing the specific fuel consumption at a given LNG production rate.

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