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DIAMINE VERSUS AMINES BLEND FOR CO2 CHEMICAL ABSORPTION
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  • Diego Gómez-Díaz,
  • José Navaza,
  • Antonio Rumbo,
  • Abel Muniz-Mouro
Diego Gómez-Díaz
University of Santiago de Compostela
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José Navaza
University of Santiago de Compostela
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Antonio Rumbo
University of Santiago de Compostela
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Abel Muniz-Mouro
University of Santiago de Compostela
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Peer review status:UNDER REVIEW

25 May 2020Submitted to AIChE Journal
28 May 2020Assigned to Editor
28 May 2020Submission Checks Completed
01 Jun 2020Reviewer(s) Assigned

Abstract

The present work analyses the behaviour of aqueous solutions of N,N-dimethylethylenediamine as chemical solvent for carbon dioxide separation by gas-liquid absorption. The interest of this molecule is centred on the presence of different types of amino centres that confer the capability to act as typical solvent based on mixtures of amines taking into account the suitable behaviour of some mixtures. For this reason a comparison between diamine and amine blend solvents has been carried out in order to understand the differences between these solvents using absorption and NMR studies. This experimental work analyses the influence of amine type, concentration and ratio between different amines. Also, the effect of gas flow rate used in the bubble column reactor upon the absorption kinetics has been analysed.