Capture of CO 2  by highly concentrated alkanolamine solutions in a rotating packed bed | Zendy

Wang YiMing | Zendy; Chen YuShao | Zendy

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Capture of CO 2 by highly concentrated alkanolamine solutions in a rotating packed bed

Author(s) -

Wang YiMing,

Chen YuShao

Publication year - 2019

Publication title -

environmental progress and sustainable energy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.495

H-Index - 66

eISSN - 1944-7450

pISSN - 1944-7442

DOI - 10.1002/ep.13263

Subject(s) - alkanolamine , chemistry , mass transfer , packed bed , absorption (acoustics) , viscosity , aqueous solution , chromatography , materials science , organic chemistry , composite material

The capture of CO 2 in a rotating packed bed (RPB) using highly concentrated alkanolamine solutions has been proved to be an effective way to enhance the absorption efficiency of CO 2 . In this investigation, the effects of alkanolamine concentration on the CO 2 removal efficiency and mass transfer coefficients ( K G a ) at various lean CO 2 loadings were studied. Monoethanolamine and 2‐methyl‐amino‐ethanol solutions were used to absorb CO 2 in an RPB. Experimental results showed that increasing the alkanolamine concentration effectively enhanced the CO 2 absorption efficiency of a fresh absorbent. For an absorbent with a high CO 2 loading, an optimal alkanolamine concentration was observed because the viscosity of the absorbent dramatically increased at high alkanolamine concentration and high CO 2 loading. A correlation of K G a was proposed and the mass transfer coefficient can be expressed as a function of the free alkanolamine concentration and the viscosity of the absorbent.

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