ZHANG Fangfang, DING Yudong, ZHU Xun, et al. Falling film absorption of CO2 into ionic liquid-MEA mixed solutions with different flow patterns[J]. CIESC Journal, 2015, (5): 1760-1766. DOI: 10.11949/j.issn.0438-1157.20141597.
ZHANG Fangfang, DING Yudong, ZHU Xun, et al. Falling film absorption of CO2 into ionic liquid-MEA mixed solutions with different flow patterns[J]. CIESC Journal, 2015, (5): 1760-1766. DOI: 10.11949/j.issn.0438-1157.20141597.DOI:
Carbon dioxide absorption into a mixed aqueous solution of functional ionic liquid
tetramethyl ammonium glycinate ([N1111][Gly]) and monoethanolamine (MEA) was performed in a plate falling film reactor with different flow patterns. The effect of countercurrent gas flow on flow pattern transition was investigated. Absorption of carbon dioxide into the mixed aqueous solution of MEA and [N1111][Gly] was studied with different liquid flow rates
liquid temperatures
gas flow rates and inlet carbon dioxide concentrations. Falling liquid film was found to take the patterns of corner rivulet flow
falling film flow with dry patches
and complete falling film flow depending on gas and liquid flow rates. Reduction of gas flow rate could lower critical flow rate of pattern transition. Absorption rate increased with increasing liquid flow rate with flow patterns of corner rivulet flow and falling film flow with dry patches
and then became unchanged with the pattern of complete falling film flow. CO2 absorption rate reached a maximum with the pattern of complete falling film flow
however
corner rivulet flow had the largest liquid phase mass transfer coefficient.