Carbon dioxide absorption with aqueous amine solutions promoted by piperazine and 1-methylpiperazine in a rotating zigzag bed

•Rotating zigzag bed (RZB) applied to CO2 absorption with aqueous amine solution.•Diethylenetriamine with piperazine or 1-methylpiperazine (1-MPZ) used as absorbent.•Piperazine exhibited better promoting effect than 1-MPZ for CO2 absorption.•RZB showed better CO2 absorption and mass transfer effect...

Ausführliche Beschreibung