Cellulose-based carbon hollow fiber membranes for high-pressure mixed gas separations of CO2/CH4 and CO2/N2

Dionysis S. Karousos; Linfeng Lei; Arne Lindbråthen; Andreas A. Sapalidis; Evangelos P. Kouvelos; Xuezhong He; Evangelos P. Favvas

doi:10.1016/j.seppur.2020.117473

Cellulose-based carbon hollow fiber membranes for high-pressure mixed gas separations of CO₂/CH₄ and CO₂/N₂

Dionysis S. Karousos, Linfeng Lei, Arne Lindbråthen, Andreas A. Sapalidis, Evangelos P. Kouvelos, Xuezhong He^*, Evangelos P. Favvas

^*Corresponding author for this work

Chemical Engineering

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

32 Scopus citations

Abstract

Carbonized cellulose -based hollow fiber membranes were prepared by dry-wet spinning phase inversion method, followed by carbonization and evaluated in terms of gas separation performance for CO₂/N₂ and CO₂/CH₄ mixtures, under flow conditions. Permeability and real selectivity were measured for both mentioned mixtures, in a temperature range of 25 °C to 60 °C, a differential pressure range of 8 bar(a) to 20 bar(a) and a CO₂ concentration range from 5% v/v to 15% v/v. The highest yielding mixture selectivity values were 42 for CO₂/N₂ at 10% v/v CO₂, 25 °C & 8 bar(a) and around 150 for CO₂/CH₄ at the same conditions, whereas the respective CO₂ permeabilities were 110 and 45 Barrer. Additionally, experiments of varying head pressure, while maintaining differential pressure, transmembrane pressure, at 8 bar(a), have revealed that CO₂/N₂ separation factor can be further enhanced with real selectivity being raised to 55 and permeability to 180 at 20 bar head pressure. The same approach had negligible effect on CO₂/CH₄ separation. This is an important finding by taking into consideration that natural gas treatment, i.e. sweetening and purification processes, is energetically and economically convenient if it takes place under the conditions, where the NG stream is extracted from the wells, or after a decompression. Moreover, Process simulation indicates that a two-stage system using the developed carbon membranes is technologically feasible to produce 96% methane with a low methane loss of <4%. Further improving membrane gas permeance can significantly reduce the specific natural gas processing cost which is dominated by the membrane-related capital cost.

Original language	English
Article number	117473
Journal	Separation and Purification Technology
Volume	253
DOIs	https://doi.org/10.1016/j.seppur.2020.117473
State	Published - 15 Dec 2020

Keywords

CO separation
Carbon hollow fiber membranes
Cellulose -based hollow fiber membranes
Feasibility analysis
High selectivity
Transmembrane pressure

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10.1016/j.seppur.2020.117473

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@article{24eaa0a5228d43aa8d3b0c1e0af7379a,

title = "Cellulose-based carbon hollow fiber membranes for high-pressure mixed gas separations of CO2/CH4 and CO2/N2",

abstract = "Carbonized cellulose -based hollow fiber membranes were prepared by dry-wet spinning phase inversion method, followed by carbonization and evaluated in terms of gas separation performance for CO2/N2 and CO2/CH4 mixtures, under flow conditions. Permeability and real selectivity were measured for both mentioned mixtures, in a temperature range of 25 °C to 60 °C, a differential pressure range of 8 bar(a) to 20 bar(a) and a CO2 concentration range from 5% v/v to 15% v/v. The highest yielding mixture selectivity values were 42 for CO2/N2 at 10% v/v CO2, 25 °C & 8 bar(a) and around 150 for CO2/CH4 at the same conditions, whereas the respective CO2 permeabilities were 110 and 45 Barrer. Additionally, experiments of varying head pressure, while maintaining differential pressure, transmembrane pressure, at 8 bar(a), have revealed that CO2/N2 separation factor can be further enhanced with real selectivity being raised to 55 and permeability to 180 at 20 bar head pressure. The same approach had negligible effect on CO2/CH4 separation. This is an important finding by taking into consideration that natural gas treatment, i.e. sweetening and purification processes, is energetically and economically convenient if it takes place under the conditions, where the NG stream is extracted from the wells, or after a decompression. Moreover, Process simulation indicates that a two-stage system using the developed carbon membranes is technologically feasible to produce 96% methane with a low methane loss of <4%. Further improving membrane gas permeance can significantly reduce the specific natural gas processing cost which is dominated by the membrane-related capital cost.",

keywords = "CO separation, Carbon hollow fiber membranes, Cellulose -based hollow fiber membranes, Feasibility analysis, High selectivity, Transmembrane pressure",

author = "Karousos, {Dionysis S.} and Linfeng Lei and Arne Lindbr{\aa}then and Sapalidis, {Andreas A.} and Kouvelos, {Evangelos P.} and Xuezhong He and Favvas, {Evangelos P.}",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors",

year = "2020",

month = dec,

day = "15",

doi = "10.1016/j.seppur.2020.117473",

language = "英语",

volume = "253",

journal = "Separation and Purification Technology",

issn = "1383-5866",

publisher = "Elsevier",

}

TY - JOUR

T1 - Cellulose-based carbon hollow fiber membranes for high-pressure mixed gas separations of CO2/CH4 and CO2/N2

AU - Karousos, Dionysis S.

AU - Lei, Linfeng

AU - Lindbråthen, Arne

AU - Sapalidis, Andreas A.

AU - Kouvelos, Evangelos P.

AU - He, Xuezhong

AU - Favvas, Evangelos P.

PY - 2020/12/15

Y1 - 2020/12/15

N2 - Carbonized cellulose -based hollow fiber membranes were prepared by dry-wet spinning phase inversion method, followed by carbonization and evaluated in terms of gas separation performance for CO2/N2 and CO2/CH4 mixtures, under flow conditions. Permeability and real selectivity were measured for both mentioned mixtures, in a temperature range of 25 °C to 60 °C, a differential pressure range of 8 bar(a) to 20 bar(a) and a CO2 concentration range from 5% v/v to 15% v/v. The highest yielding mixture selectivity values were 42 for CO2/N2 at 10% v/v CO2, 25 °C & 8 bar(a) and around 150 for CO2/CH4 at the same conditions, whereas the respective CO2 permeabilities were 110 and 45 Barrer. Additionally, experiments of varying head pressure, while maintaining differential pressure, transmembrane pressure, at 8 bar(a), have revealed that CO2/N2 separation factor can be further enhanced with real selectivity being raised to 55 and permeability to 180 at 20 bar head pressure. The same approach had negligible effect on CO2/CH4 separation. This is an important finding by taking into consideration that natural gas treatment, i.e. sweetening and purification processes, is energetically and economically convenient if it takes place under the conditions, where the NG stream is extracted from the wells, or after a decompression. Moreover, Process simulation indicates that a two-stage system using the developed carbon membranes is technologically feasible to produce 96% methane with a low methane loss of <4%. Further improving membrane gas permeance can significantly reduce the specific natural gas processing cost which is dominated by the membrane-related capital cost.

AB - Carbonized cellulose -based hollow fiber membranes were prepared by dry-wet spinning phase inversion method, followed by carbonization and evaluated in terms of gas separation performance for CO2/N2 and CO2/CH4 mixtures, under flow conditions. Permeability and real selectivity were measured for both mentioned mixtures, in a temperature range of 25 °C to 60 °C, a differential pressure range of 8 bar(a) to 20 bar(a) and a CO2 concentration range from 5% v/v to 15% v/v. The highest yielding mixture selectivity values were 42 for CO2/N2 at 10% v/v CO2, 25 °C & 8 bar(a) and around 150 for CO2/CH4 at the same conditions, whereas the respective CO2 permeabilities were 110 and 45 Barrer. Additionally, experiments of varying head pressure, while maintaining differential pressure, transmembrane pressure, at 8 bar(a), have revealed that CO2/N2 separation factor can be further enhanced with real selectivity being raised to 55 and permeability to 180 at 20 bar head pressure. The same approach had negligible effect on CO2/CH4 separation. This is an important finding by taking into consideration that natural gas treatment, i.e. sweetening and purification processes, is energetically and economically convenient if it takes place under the conditions, where the NG stream is extracted from the wells, or after a decompression. Moreover, Process simulation indicates that a two-stage system using the developed carbon membranes is technologically feasible to produce 96% methane with a low methane loss of <4%. Further improving membrane gas permeance can significantly reduce the specific natural gas processing cost which is dominated by the membrane-related capital cost.

KW - CO separation

KW - Carbon hollow fiber membranes

KW - Cellulose -based hollow fiber membranes

KW - Feasibility analysis

KW - High selectivity

KW - Transmembrane pressure

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U2 - 10.1016/j.seppur.2020.117473

DO - 10.1016/j.seppur.2020.117473

M3 - 文章

AN - SCOPUS:85089099835

SN - 1383-5866

VL - 253

JO - Separation and Purification Technology

JF - Separation and Purification Technology

M1 - 117473

ER -

Cellulose-based carbon hollow fiber membranes for high-pressure mixed gas separations of CO₂/CH₄ and CO₂/N₂

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