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The Membrane Society of Korea (한국막학회)
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Simulation of Membrane-absorption Hybrid Process for LNG-FPSO

LNG-FPSO용 막-흡수 하이브리드 공정 전산모사

  • Min, Kwang-Joon (Department of Chemical Engineering, Hanyang University) ;
  • Cho, Habin (Department of Chemical Engineering, Hanyang University) ;
  • Kim, Jin-Kuk (Department of Chemical Engineering, Hanyang University) ;
  • Kang, Sang Wook (Department of Chemistry and Energy Engineering, Sangmyung University)
  • 민광준 (한양대학교 화학공학과) ;
  • 조하빈 (한양대학교 화학공학과) ;
  • 김진국 (한양대학교 화학공학과) ;
  • 강상욱 (상명대학교 화학에너지공학과)
  • Received : 2018.04.17
  • Accepted : 2018.04.24
  • Published : 2018.04.30
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Abstract

A process design was performed for a removal of acid gases using membrane-absorption hybrid system in LNG-FPSO. Commercial process simulator Promax version 4.0 was utilized for comparing acid gases removal capabilities of amine absorption process and hybrid process. Simulation results show hybrid process could be small amine solvent circulate rate, energy consumption, equipment sizing compared to typical amine absorption process. As a result, hybrid process which is small footprint and energy saving process may be a good solution for the pre-treatment of natural gas in LNG-FPSO.

LNG-FPSO 산성가스 제거 공정에서 막-흡수 하이브리드 시스템 적용을 위한 설계를 수행하였다. 상용 공정 모사기인 Promax version 4.0을 이용하여 아민 흡수 공정과 하이브리드 공정의 산성가스 제거 성능을 비교하였다. 전사 모사 결과를 통해 하이브리드 공정은 아민 용매 순환량, 에너지 소모량, 장치 사이즈가 아민 흡수 공정에 비하여 작아지는 것을 확인할 수 있었다. 따라서, 컴팩트한 장치 사이즈와 에너지 절감 공정인 하이브리드 공정은 LNG-FPSO 천연가스 전처리 공정에 적용하기에 적합한 방안임을 확인하였다.

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