Continuous Gas Dehydration Using the Hygroscopic Ionic Liquid [EMIM][MeSO₃] as a Promising Alternative Absorbent

Titelangaben

Krannich, Michel ; Heym, Florian ; Jess, Andreas:
Continuous Gas Dehydration Using the Hygroscopic Ionic Liquid [EMIM][MeSO₃] as a Promising Alternative Absorbent.
In: Chemical Engineering & Technology. Bd. 39 (2016) Heft 2 . - S. 343-353.
ISSN 1521-4125
DOI: https://doi.org/10.1002/ceat.201500588

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Abstract

Continuous gas drying experiments with the hygroscopic ionic liquid [EMIM][MeSO₃] show that it can be a very promising alternative drying agent to the absorbent triethylene glycol (TEG) commonly used in industrial gas drying processes. The HTU/NTU model in combination with the correlations of Onda et al. for mass transfer coefficients can be applied for the design of an absorption process with [EMIM][MeSO₃]. The major advantage of this ionic liquid (IL) is that well-known problems associated with the regeneration of the absorbent TEG can be avoided using [EMIM][MeSO₃] due to extremely low vapor pressure and possible regeneration with air. The drying capacity of the IL system is about two times higher compared to TEG. Hence, a simple plant design comparable to that of industrial adsorption plants might be applied.