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Absorption Rate Measurement of CO_2 in MDEA+2,3-Butanedione Aqueous Solution

Weiyang Fei

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Abstract

An equipment for the measurement of kinetic data of gas absorption was improved and the data of absorption rate of CO_2 at different conditions in the system of N-methyldiethanolamine (MDEA)+2,3-butanedione+water were measured. The results indicate that the apparent absorption rate constant increases with the increasing of temperature and decreases with the increasing of the concentration of carbon dioxide dissolved in liquid phase. The results also show that the apparent absorption rates in the system of 48.5wt% MDEA+5.0wt% 2,3-butanedione+water are higher than those of other two systems (48.5wt% MDEA+water, 48.5wt% MDEA+5.0wt% sulfolane+water) at the same conditions.

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What this paper is about

An equipment for the measurement of kinetic data of gas absorption was improved and the data of absorption rate of CO_2 at different conditions in the system of N-methyldiethanolamine (MDEA)+2,3-butanedione+water were measured. The results indicate that the apparent absorption rate constant increases with the increasing of temperature and decreases with the increasing of the concentration of carbon dioxide dissolved in liquid phase. The results also show that the apparent absorption rates in the system of 48.5wt% MDEA+5.0wt% 2,3-butanedione+water are higher than those of other two systems (48.5wt% MDEA+water, 48.5wt% MDEA+5.0wt% sulfolane+water) at the same conditions.

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Available abstract

An equipment for the measurement of kinetic data of gas absorption was improved and the data of absorption rate of CO_2 at different conditions in the system of N-methyldiethanolamine (MDEA)+2,3-butanedione+water were measured. The results indicate that the apparent absorption rate constant increases with the increasing of temperature and decreases with the increasing of the concentration of carbon dioxide dissolved in liquid phase. The results also show that the apparent absorption rates in the system of 48.5wt% MDEA+5.0wt% 2,3-butanedione+water are higher than those of other two systems (48.5wt% MDEA+water, 48.5wt% MDEA+5.0wt% sulfolane+water) at the same conditions.

Key concepts: Chemistry, Aqueous solution, Sulfolane, Carbon dioxide, Absorption (acoustics), Absorption rate, Analytical Chemistry (journal), Chromatography

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