A summary of a few MEA-based CO2 capture using spray column was reported in https://doi.org/10.1016/j.cherd.2015.08.012.
“Spray absorption of CO2 into monoethanolamine: Mass transfer coefficients, dropsize, and planar surface area, Chemical Engineering Research and Design Volume 104, December 2015, Pages 376-389″
The results are shown in Table 1 of this reference.