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- W3010781765 endingPage "116795" @default.
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- W3010781765 abstract "Abstract The gas-liquid two-phase flow and the mass transfer characteristics for CO2 absorption into the binary amine mixture of monoethanolamine (MEA) and N,N-diethylethanolamine (DEEA) aqueous solution were investigated in T-junction microchannel reactor with a square cross-section. The effects of gas-liquid flow rate and absorbent concentration on bubble length, velocity and mass transfer coefficient were studied. Three flow regimes including slug-bubbly flow, slug flow and slug-annular flow were observed under experimental condition, and the gas-liquid two-phase flow pattern map was depicted. It is found that the transitions between three flow regimes depend primarily on the competition of forces exerted on bubble in the T-junction. The kinetics of CO2 absorption into blended amine aqueous solutions was analyzed to understand the mass transfer enhancement mechanism of new hybrid solvent. Furthermore, the liquid-side overall mass transfer coefficient kL and the liquid-side overall volumetric mass transfer coefficient kLa were determined through processing experimental images recorded by a high-speed camera. The results show that kLa is in the range of (3.04–20.07) s−1 in this work, which is 2–3 orders of magnitude higher than that in the conventional equipment. The dimensionless Damkohler number (Da) and Peclet number (Pe) are introduced to correlate the liquid-side volumetric mass transfer coefficient, new correlation shows good prediction accuracy with the average deviation of 3.64%." @default.
- W3010781765 created "2020-03-23" @default.
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- W3010781765 date "2020-07-01" @default.
- W3010781765 modified "2023-10-17" @default.
- W3010781765 title "An effective hybrid solvent of MEA/DEEA for CO2 absorption and its mass transfer performance in microreactor" @default.
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- W3010781765 doi "https://doi.org/10.1016/j.seppur.2020.116795" @default.
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