Kinetics of absorption of Carbon Dioxide with activated aqueous alkanolamine solutions

摘要

The kinetics of CO_2 with aqueous alkanolamine and activated alkanolamine solutions were investigated. A wetted-sphere absorption apparatus was used to measure the absorption rate. The apparent reaction rate coefficient increases with increasing MDEA concentration without piperazine. But the apparent reaction rate coefficient decreases with increasing MDEA concentration with piperazine. the apparent rate coefficient strongly increases with increasing piperazine concentration. The highly concentrated MDEA solution needs more piperazine to activate reaction rate.