Absorption of Carbon Dioxide at High Partial Pressures in 1-Amino-2-propanol Aqueous Solution. Considerations of Thermal Effects

Abstract

In the present work, the process of carbon dioxide absorption is analyzed at high partial pressures, in aqueous solutions of 1-amino-2-propanol (monoisopropanolamine (MIPA)), in relation to the thermal effects involved. All experiments were made in a stirred-tank reactor with a plane unbroken gas−liquid interface. The variables considered were the MIPA concentration within the range 0.1−2.0 M and the temperature within the interval 288−308 K. From the results, we deduce that the absorption process takes place in the nonisothermal instantaneous regime and propose an equation which not only relates the experimental results of flow density with the initial concentration of amine but at the same time enables the evaluation of the rise in temperature in the gas−liquid interface.

Kinetics of carbon dioxide absorption into aqueous glucosamine solutions

“…The flow densities were calculated assuming that the gas phase follows an ideal behaviour, taking previous studies into account. 6 Carbon dioxide flow density was calculated by means of experimental data corresponding to the absorbed quantity of carbon dioxide along the operation time. Figure 2 shows the experimental results, which were obtained in relation to the flux density determined for the liquid phases employed in this work.…”

Thermal effects of CO2 absorption in aqueous solutions of 2‐amino‐2‐methyl‐1‐propanol

“…The results obtained during the process of the physical absorption enabled us to calculate the value of k L for the temperature range used. 12 In the absorption experiments with pure CO 2 in aqueous AMP solutions, we analyzed the influence of the initial alkanolamine concentration and the operating temperature.…”

Thermal Effects During the Absorption of CO2 in Aqueous Solutions of 3-Amino-1-Propanol

“…The results obtained during the processes of physical absorption have enabled the determination of the k L values for the range of temperatures investigated (Camacho et al [10]). …”