Chemical Absorption of Carbon Dioxide with AMP in Aqueous PAA Solution

抄録

Carbon dioxide was absorbed into aqueous polyacrylamide(PAA) solution containing 2-amino- 2-methyl-1-propanol(AMP) in a flat-stirred vessel to investigate the effect of non-Newtonian rheological behavior of PAA on the rate of chemical absorption of CO₂, where the reaction between CO₂ and AMP was assumed to be a first-order reaction with respect to the molar concentration of CO₂ and AMP, respectively. The liquid-side mass transfer coefficient(k_L), which was obtained from the dimensionless empirical equation containing the properties of viscoelasticity of the non-Newtonian liquid, was used to estimate the enhancement factor due to chemical reaction. PAA with elastic property of non-Newtonian liquid made the rate of chemical absorption of CO₂ accelerate compared with Newtonian liquid.