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분리막 공정과 LNG 냉열 및 심냉 증류를 이용한 전자급 고순도 이산화탄소의 분리
고영수(YOUNGSOO KO),장경룡(KYUNGRYONG JANG),김정훈(JUNGHOON KIM),조영주(YOUNGJOO JO),조정호(JUNGHO CHO) 한국수소및신에너지학회 2024 한국수소 및 신에너지학회논문집 Vol.35 No.1
In this paper, a new technology to obtain electronic grade, highly pure carbon dioxide by using membrane and liquefied natural gas (LNG) cold heat assisted cryogenic distillation has been proposed. PRO/II with PROVISION release 2023.1 from AVEVA company was used, and Peng-Robinson equation of the state model with Twu’s alpha function to predict pure component vapor pressure versus temperature more accurately was selected for the modeling of the membrane and cryogenic distillation process. Advantage of using membrane separation instead of selecting absorber-stripper configuration for the concentration of carbon dioxide was the reduction of carbon dioxide capture cost.