Proposal and Analysis of DMR Process with Hydrofluorocarbon Refrigerants

Hydrofluorocarbon 냉매를 적용한 DMR 공정 제안 및 분석

Park, Jinwoo;Lee, Inkyu;Shin, Jihyun;Moon, Il

  • Received : 2015.11.25
  • Accepted : 2016.02.22
  • Published : 2016.02.29


Natural gas, one of the cleanest fossil fuel, is liquefied to reduce its volume for the long distance transportation. Small size floating liquefied natural gas plant has small area that safe issue is highly considered. However, Dual Mixed Refrigerants (DMR) process has fire potential by using flammable refrigerants and N2 Expander process has low compressed energy efficiency which has high inherent process safety. Therefore, safe process with high compressed energy efficiency is constantly needed. This study suggested an alternative refrigerants to existing DMR process by using Hydrofluorocarbon which has high safety due to its non-flammable properties. As a result, it showed 34.8% lower compressed energy efficiency than DMR process that contains fire potential whereas 42.6% improved compressed energy efficiency than Single N2 Expander process. In conclusion, this research proposed safe process for small size floating liquefied natural gas plant while having high efficiency.


Liquefied natural gas;DMR;N2 Expander;Refrigerants;HFC;Hydrofluorocarbon


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Supported by : 국토교통부