Physical data for a process to separate krypton from air by selective absorption in an ionic liquid

Waheed Afzal; Xiangyang Liu; John M. Prausnitz

doi:10.1016/j.fluid.2015.06.037

Physical data for a process to separate krypton from air by selective absorption in an ionic liquid

Waheed Afzal
, Xiangyang Liu
, John M. Prausnitz

School of Energy and Power Engineering

University of California at Berkeley
LBL
University of Aberdeen

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Ionic liquids provide a possible absorption process to extract krypton from air. The feed for such a process is an oxygen stream from a liquid-air plant. An effective ionic liquid is [P(14)666][TMPP]; in that solvent, the solubilities of some pertinent common gases are appreciably larger than those in conventional ionic liquids, and the selectivity Kr/O₂ is close to 3. A nonvolatile ionic liquid is preferred over a hydrocarbon solvent because of safety and simpler solvent recovery. Because, the viscosity of [P(14)666][TMPP] is very high, 20wt.% [BHMIM][AC] is added to reduce the viscosity by one order of magnitude without significantly reducing solvent capacity and selectivity. This work provides extensive fundamental data (solubility, density and viscosity) required for process design.

Original language	English
Pages (from-to)	124-130
Number of pages	7
Journal	Fluid Phase Equilibria
Volume	404
DOIs	https://doi.org/10.1016/j.fluid.2015.06.037
State	Published - 5 Oct 2015

Keywords

Absorption
Diluent
Mixture of ionic liquids
Selectivity Kr/O<inf>2</inf>
Separation

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10.1016/j.fluid.2015.06.037

Cite this

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title = "Physical data for a process to separate krypton from air by selective absorption in an ionic liquid",

abstract = "Ionic liquids provide a possible absorption process to extract krypton from air. The feed for such a process is an oxygen stream from a liquid-air plant. An effective ionic liquid is [P(14)666][TMPP]; in that solvent, the solubilities of some pertinent common gases are appreciably larger than those in conventional ionic liquids, and the selectivity Kr/O2 is close to 3. A nonvolatile ionic liquid is preferred over a hydrocarbon solvent because of safety and simpler solvent recovery. Because, the viscosity of [P(14)666][TMPP] is very high, 20wt.\% [BHMIM][AC] is added to reduce the viscosity by one order of magnitude without significantly reducing solvent capacity and selectivity. This work provides extensive fundamental data (solubility, density and viscosity) required for process design.",

keywords = "Absorption, Diluent, Mixture of ionic liquids, Selectivity Kr/O<inf>2</inf>, Separation",

author = "Waheed Afzal and Xiangyang Liu and Prausnitz, \{John M.\}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = oct,

day = "5",

doi = "10.1016/j.fluid.2015.06.037",

language = "英语",

volume = "404",

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journal = "Fluid Phase Equilibria",

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TY - JOUR

T1 - Physical data for a process to separate krypton from air by selective absorption in an ionic liquid

AU - Afzal, Waheed

AU - Liu, Xiangyang

AU - Prausnitz, John M.

PY - 2015/10/5

Y1 - 2015/10/5

N2 - Ionic liquids provide a possible absorption process to extract krypton from air. The feed for such a process is an oxygen stream from a liquid-air plant. An effective ionic liquid is [P(14)666][TMPP]; in that solvent, the solubilities of some pertinent common gases are appreciably larger than those in conventional ionic liquids, and the selectivity Kr/O2 is close to 3. A nonvolatile ionic liquid is preferred over a hydrocarbon solvent because of safety and simpler solvent recovery. Because, the viscosity of [P(14)666][TMPP] is very high, 20wt.% [BHMIM][AC] is added to reduce the viscosity by one order of magnitude without significantly reducing solvent capacity and selectivity. This work provides extensive fundamental data (solubility, density and viscosity) required for process design.

AB - Ionic liquids provide a possible absorption process to extract krypton from air. The feed for such a process is an oxygen stream from a liquid-air plant. An effective ionic liquid is [P(14)666][TMPP]; in that solvent, the solubilities of some pertinent common gases are appreciably larger than those in conventional ionic liquids, and the selectivity Kr/O2 is close to 3. A nonvolatile ionic liquid is preferred over a hydrocarbon solvent because of safety and simpler solvent recovery. Because, the viscosity of [P(14)666][TMPP] is very high, 20wt.% [BHMIM][AC] is added to reduce the viscosity by one order of magnitude without significantly reducing solvent capacity and selectivity. This work provides extensive fundamental data (solubility, density and viscosity) required for process design.

KW - Absorption

KW - Diluent

KW - Mixture of ionic liquids

KW - Selectivity Kr/O<inf>2</inf>

KW - Separation

UR - https://www.scopus.com/pages/publications/84937201812

U2 - 10.1016/j.fluid.2015.06.037

DO - 10.1016/j.fluid.2015.06.037

M3 - 文章

AN - SCOPUS:84937201812

SN - 0378-3812

VL - 404

SP - 124

EP - 130

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

ER -

Physical data for a process to separate krypton from air by selective absorption in an ionic liquid

Abstract

Keywords

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