| 초록 |
Aqueous ammonia absorbent (10 wt%) was modified with additives containing hydroxyl groups (1 wt%), i.e. 2-Amino-2-Methyl-1-Propanol (AMP), 2-Amino-2-Methyl-1,3-Propandiol (AMPD), 2-Amino-2-Ethyl-1,3-Propandiol (AEPD), Tri(Hydroxymethyl) AminoMethane (THAM), for CO2 capture. The loss of ammonia by vapor pressure was reduced by additives, while the removal efficiency of CO2 was improved. These results were analyzed by those calculated by Gaussian type orbital 6-311G. In addition, overall mass transfer coefficient, reaction constant and activation energy of aqueous ammonia and additive-modified ammonia solution were obtained by using stirred cell. These experimental and theoretical results demonstrate that additives containing hydroxyl group are suitable for modifying aqueous ammonia absorbent for CO2 removal. |
