화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2021년 봄 (04/21 ~ 04/23, 부산 BEXCO)
권호 27권 1호, p.406
발표분야 분리기술
제목 A promising CO2 separation proceess using gas hydrate crystallization
초록 CO2 is a representative greenhouse gas causing global warming effects, and its emission is continuously increasing due to the use of fossil fuels. Therefore, it is necessary to separate CO2 from the gas mixtures emitted from the plant. Several technologies including absorption, adsorption, and membrane separation can be applied to CO2 separation, but these methods are economically inefficient as they require a pretty large amount of energy to operate, and the separation efficiency is not high enough. Gas hydrate is a crystalline compound in which gas molecules are captured in a lattice structure of water molecules connected by hydrogen bonds. The well-known crystal structures are sI, sII, and sH. Thermodynamic conditions required to form hydrates change with the gas species/compositions, and thus CO2 can be selectively separated from the gas mixtures. For such a process, chemical additives are often used to lower the pressure required to form hydrates and accelerate their formation. In this study, several amino acids including L-methionine, L-leucine, and L-isoleucine were used to promote CO2 hydrate formation. The optimal selection and use of additives will be discussed.
저자 김세영, 조상규, 김광범, 사정훈
소속 동아대
키워드 분리공정
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