Efficiency Comparison of CO_2 Removal Respectively with Ammonia Solution and MEA

An introduction is being presented about the reaction mechanism of CO2 capture with ammonia solution and MEA,while factors influencing the CO2 removal efficiency were analyzed,such as the mass fraction of absorbents,volumetric fraction of CO2,flow rate of inlet gas,pH value of solution and the reaction temperature etc.Absorbing capabilities of ammonia solution and MEA had been measured separately through absorbing experiments,during which corresponding products were determined by infrared spectrometer.Experimental results show that the removal efficiency of CO2 can be raised by improving both the mass concentration and the pH value of absorbents;temperature plays a role in influencing the CO2 removal by either ammonia solution or MEA;the absorbing capability of ammonia solution is far more than that of MEA;ammonia process is superior to MEA on the aspect of absorbent regeneration,energy consumption and byproduct utilization etc.