Titlebar

Bibliografische Daten exportieren
Literatur vom gleichen Autor
plus auf ERef Bayreuth
plus bei Google Scholar

 

Vapor Pressure of Water in Mixtures with Hydrophilic Ionic Liquids : A Contribution to the Design of Processes for Drying of Gases by Absorption in Ionic Liquids

Titelangaben

Heym, Florian ; Haber, J. ; Korth, Wolfgang ; Etzold, Bastian ; Jess, Andreas:
Vapor Pressure of Water in Mixtures with Hydrophilic Ionic Liquids : A Contribution to the Design of Processes for Drying of Gases by Absorption in Ionic Liquids.
In: Chemical Engineering & Technology. Bd. 33 (2010) Heft 10 . - S. 1625-1634.
ISSN 1521-4125
DOI: https://doi.org/10.1002/ceat.201000146

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

The low water vapor pressures of mixtures of water with the ionic liquids (ILs), [EMIM][EtSO4] and [BEIM][EtSO4], indicate that a process of gas dehydration by absorption in ILs might be an alternative to the classical absorption process with triethylene glycol (TEG). The activity coefficient for an infinite dilution of water in the IL (xIL → 1), which should be low for efficient dehydration, is only about 0.2 for [EMIM][EtSO4] compared to 0.6 for triethylene glycol. In contrast to TEG, losses by evaporation are excluded with ILs as solvents, because they have a negligible vapor pressure. The number of separation stages needed for the absorption in the IL and for the subsequent regeneration of the water-loaded IL is small, about six and eight, respectively. IL regeneration can be achieved by distillation of water out of the IL (e.g., at 120 °C) and stripping with ambient air, which is not possible in the case of TEG (chemical attack by O2).

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Absorption; Activity coefficient; Gas dehydration; Ionic liquid; Stripping
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Chemische Verfahrenstechnik
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Chemische Verfahrenstechnik > Lehrstuhl Chemische Verfahrenstechnik - Univ.-Prof. Dr.-Ing. Andreas Jess
Fakultäten
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 660 Chemische Verfahrenstechnik
Eingestellt am: 02 Feb 2015 09:38
Letzte Änderung: 03 Feb 2015 11:00
URI: https://eref.uni-bayreuth.de/id/eprint/6136