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A Study of Mixed Refrigerant Process Control in Liquefied Natural Gas Process using Dynamic Simulation

동적 모사를 이용한 천연가스 액화 공정에서 혼합냉매 공정 제어 연구

  • Received : 2015.10.02
  • Accepted : 2015.12.24
  • Published : 2015.12.31

Abstract

Today the most efficient way to transport the natural gas is carried via the liquid. In order to liquefy the natural gas to be cooled to $-160^{\circ}C$ or less. Cooling method has a number of different ways. In this paper, we studied control method for the representative liquefaction process, C3MR. Natural gas liquefaction control is a tool that can maintain the quality of natural gas is a means to ensure stable operation. Analyzing the C3MR process, and select the control parameters for the control valve. We find control structure for mixed refrigerant cycle through the step response. A control result obtained through the dynamic simulation arbitrarily given a disturbance was found to maintain a steady-state results.

Keywords

C3MR;process control;dynamic simulation;liquefied natural gas

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Acknowledgement

Supported by : 국토해양부 LNG 플랜트 사업단