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The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on the Utilization of the LNG Cold Heat for the Reduction of the Power Consumption in Main Air Compressors in Cryogenic Air Separation

심냉 공기분리공정의 공기압축공정에서 전력비 절감을 위한 액화천연가스 냉열 활용에 대한 연구

  • CHO, DUHEE (Department of Chemical Engineering, Kongju National University) ;
  • CHO, JUNGHO (Department of Chemical Engineering, Kongju National University)
  • Received : 2020.05.10
  • Accepted : 2020.06.30
  • Published : 2020.06.30
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Abstract

In this work, a study for the reduction of the electric power consumption has been estimated in main air compressors in the air separation unit through cryogenic distillation columns with PRO/II with PROVISION V10.2 at AVEVA company. Both required LNG mass flow rate and cold heat contained in 1 ton of LNG were also predicted using Peng-Robinson equation of state with Twu's new alpha function. Through this work, we concluded that 32.33-48.69% of electric power could be saved by using LNG cold heat.

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References

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