title: [Removal of CO2 from simulated flue gas of power plants by membrane-based gas absorption processes].
abstract: Three typical absorbents such as aqueous of aminoacetic acid potassium (AAAP), monoethanolamine (MEA) and methyldiethanolamine(MDEA) are selected to investigate the performance of CO2 separation from flue gas via membrane contactors made of hydrophobic hollow fiber polypropylene porous membrane. Impacts of absorbents, concentrations and flow rates of feeding gas and absorbent solution, cyclic loading of CO2 on the removal rate and the mass transfer velocity of CO2 are discussed. The results demonstrate that the mass transfer velocity was 7.1 mol x (m2 x s)(-1) for 1 mol x L(-1) MEA with flow rate of 0.1 m x s(-1) and flue gas with that of 0.211 m x s(-1). For 1 mol L(-1) AAAP with flow rate of 0.05 m x s(-1) and flue gas of 0.211 m x s(-1), CO2 removal rate (eta) was 93.2 % and eta was 98% for 4 mol x L(-1) AAAP under the same conditions. AAAP being absorbent, eta was higher than 90% in a wider range of concentrations of CO2. It indicates that membrane-based absorption process is a widely-applied and promising way of CO2 removal from flue gas of power plants, which not only appropriates for CO2 removal of flue gas of widely-used PF and NGCC, but also for that of flue gas of IGCC can be utilized widely in future.
authors.affiliation: State Key Laboratory of Clean Energy Environment Engineering, Zhejiang University, Hangzhula 310027, China. ymf@zju.edu.cn
authors.forename: Ming-Fen
authors.initials: MF
authors.lastname: Yang
authors.forename: Meng-Xiang
authors.initials: MX
authors.lastname: Fang
authors.forename: Wei-Feng
authors.initials: WF
authors.lastname: Zhang
authors.forename: Shu-Yuan
authors.initials: SY
authors.lastname: Wang
authors.forename: Zhi-Kang
authors.initials: ZK
authors.lastname: Xu
authors.forename: Zhong-Yang
authors.initials: ZY
authors.lastname: Luo
authors.forename: Ke-Fa
authors.initials: KF
authors.lastname: Cen
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000517:prevention & control*; D002245:Carbon Dioxide / Q000032:analysis*; D019856:Ethanolamine / Q000737:chemistry; D004983:Ethanolamines / Q000737:chemistry; D005740:Gases / Q000032:analysis; D005998:Glycine / Q000737:chemistry; D008567:Membranes, Artificial; D011126:Polypropylenes; D011210:Power Plants
chemical_list: D000393:Air Pollutants; D004983:Ethanolamines; D005740:Gases; D008567:Membranes, Artificial; D011126:Polypropylenes; D002245:Carbon Dioxide; C008430:N-methyldiethanolamine; D019856:Ethanolamine; D005998:Glycine