Study On The Absorption Performance Of CO₂ In AMP Promoted MDEA Solutions

The absorption capacity and CO₂ loading in MDEA-AMP aqueous solutions were measured at normal pressure.The temperatures ranged from 303.15-323.15 K.The mass fractions of AMP and MDEA respectively ranged from 0 to 0.09 and 0.2to 0.3.The absorption rates were determined by using the experimental data of the time-dependent absorption capacities.The effects of temperature and solution concentration on the absorption capacity,CO₂ loading and absorption rate were illustrated.Our results show that:?1?The absorption capacity of CO₂ respectively increases decreases with increasing mass fraction of absorbent and increasing temperature.?2?The CO₂ loading decreases with the increase of both mass fraction of absorbent and increasing temperature.?3?The absorption rate of CO₂ can be accelerated remarkably when MDEA aqueous solution was promoted by small amount of AMP,and the absorption rate of CO₂ increase with the increase of the addition of AMP.