Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Estimation of the Amount of Electric Power Saved in the Carbon Dioxide Liquefaction Process using LNG Cold Heat

LNG 냉열을 활용한 이산화탄소 액화공정에서 절감되는 전력량의 산출

  • LEE, JIHWAN (Department of Human & Environment, Kyung-In Women's University) ;
  • CHO, JUNGHO (Department of Chemical Engineering, Kongju National University)
  • 이지환 (경인여자대학교 보건환경과) ;
  • 조정호 (공주대학교 공과대학 화학공학부)
  • Received : 2020.04.06
  • Accepted : 2020.04.30
  • Published : 2020.04.30
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Abstract

In this study, comparison study has been performed between two-stage compression and a vapor-recompression refrigeration cycle and a liquefaction using LNG cold heat. When using a first method using two-stage compression and a refrigeration cycle, at least three compressors are required, however when using LNG cold heat, no compressor is required since carbon dioxide can be pumped after condensing with the heat exchange with -160℃ of LNG. Through this study, we can save more than one hundred million KRW annually by using LNG cold heat instead of using gas compression and refrigeration cycle.

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References

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