✦ LIBER ✦

The influence of carbonation ratio and total amine concentration on carbon dioxide absorption in aqueous monoethanolamine solutions

✍ Scribed by G. Astarita; G. Marrucci; F. Gioia

Publisher: Elsevier Science
Year: 1964
Tongue: English
Weight: 759 KB
Volume: 19
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(64)85114-9

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✦ Synopsis

The influence of total amhe concentration, CO, and of carbonation ratio, a, on the process of COS absorption in aqueous MEA solutions is considered. Analysis of the chemical reactions taking place in the liquid elucidates the pattem of reactions leading to the thermodynamically favoured products. Experiments confirm the reaction mechanism proposed, and the process considered is shown to be: when b: < 05, fast second order chemical absorption, with a stoichiometric coefficient of 2 molen lvIEA per mole COS; when Q > 0.5, slow pseudo-first-order chemical absorption with an overall kinetic constant depending on the OH-concentration.

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