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The AAPG/Datapages Combined Publications Database

Indonesian Petroleum Association


9th Annual Convention Proceedings, 1980
Pages 213-231

Application of Dynamic Simulation to Change the Design and Operation of LNG Plants

N. E. Pobanz, R. K. Miyasaki, D. B. Warren


Dynamic Computer Simulation is an effective tool for efficient design. It can be used to:

• Evaluate/design control systems

• Evaluate system behavior during emergency upsets

• Establish/verify startup and shutdown procedure

• Train startup and plant operators

This paper documents how dynamic simulation has been applied to three areas of a LNG operation. They are:

1. Centrifugal compressor systems

2. Integrated electric/steam utility plant

3. Gas gathering and condensate removal facility

In Area #1, the paper discusses the application of dynamic simulation to centrifugal compressor control system design. It presents case histories involving the design of anti-surge protection for large compressor systems. It documents how simulation is used to test and amend start-up procedures.

In Area #2, the paper discusses how simulation is used to design a pressure letdown control system. The simulation model is used to demonstrate how the utility plant would maintain steam and electrical balances during emergency upsets; e.g., compressor trips, trubine trips, boiler trips, etc.

In Area #3, the pressure behavior of a gas gathering facility during normal and upset conditions is determined by the performance of the pressure-flow control system. The paper discusses how dynamic simulation has been used to evaluate and redesign such control systems.

The paper concludes with a brief discussion of how a dynamic simulation model is developed.

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