Kinetics Study of CO₂ Absorption into Solutions of UDS

Abstract

CO₂ absorption kinetics in united-developed desulfur solvent (UDS; a multicomponent solvent) and methyldiethanolamine solutions are measured in a disk column under the temperature range from 303 to 323 K and solution concentrations range from 0.35 to 4.371 mol·L ⁻¹. Under the condition of UDS concentration of 50% (4.371 mol·L ⁻¹) and temperature of 313 K, N and k_obs are 5.561 × 10⁻⁶ kmol·m ⁻²·sec ⁻¹ and 4,183.372 sec⁻¹ , respectively. The absorption activation energy of CO₂ into UDS is 44.92 kJ·mol ⁻¹.

Keywords:

• absorption
• carbon dioxide
• kinetics
• N-methyldiethanolamine
• UDS