Korean Journal of Chemical Engineering

, Volume 35, Issue 11, pp 2150–2156 | Cite as

Optimization of compression ratio in closed-loop CO2 liquefaction process

  • Taekyoon Park
  • Hyungyeol Kwak
  • Yeonsoo Kim
  • Jong Min LeeEmail author
Process Systems Engineering, Process Safety


We suggest a systematic method for obtaining the optimal compression ratio in the multi-stage closed-loop compression process of carbon dioxide. Instead of adopting the compression ratio of 3 to 4 by convention, we propose a novel approach based on mathematical analysis and simulation. The mathematical analysis prescribes that the geometric mean is a better initial value than the existing empirical value in identifying the optimal compression ratio. In addition, the optimization problem considers the initial installation cost as well as the energy required for the operation. We find that it is best to use the fifth stage in the general closed-loop type carbon dioxide multi-stage compression process.


Carbon Capture Closed-loop Compression Compression Ratio Multi-stage Compression Geometric Mean 


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Copyright information

© Korean Institute of Chemical Engineers, Seoul, Korea 2018

Authors and Affiliations

  • Taekyoon Park
    • 1
  • Hyungyeol Kwak
    • 1
  • Yeonsoo Kim
    • 1
  • Jong Min Lee
    • 1
  1. 1.School of Chemical and Biological Engineering, Institute of Chemical ProcessesSeoul National UniversitySeoulKorea

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