a) High capacity. New tower design may reduce diameter, while revamping old towers may increase capacity significantly.
b) High separation efficiency owing to much larger specific surface area compared with random packing.
c) Low pressure drop, which leads to reduce energy consumption largely.
d) Large flexibility, and scale effect is not obvious.
e) Applicable to all tower diameters.
f) Strong resistance to corrosion of acid and alkali, especially to H2S, naphthenic acid and Cl-.