Minimizing specific energy consumption of oxygen enrichment in polymeric hollow fiber membrane modules

Arttu Meriläinen, Ari Seppälä (Corresponding Author), Pertti Kauranen

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

The energy efficiency of the separation of air into an oxygen-enriched permeate and an oxygen-depleted residue stream in a polymeric hollow fiber membrane module is studied. On the basis of the modeled performance of the module, three different counter-current lumen-feed flow system configurations are compared and analyzed. The vacuum permeate configuration, where a vacuum is maintained on the permeate side of the membrane, is the most efficient single-stage process. A two-stage configuration, where the permeate of the first module is further enriched in a second stage, is also considered. By optimizing both stages the specific energy consumption can, in some cases, be further reduced. The optimization of the module geometry is not as important as the optimization of the feed parameters – the pressure ratio and stage cut. The results of polymeric membrane air separation are compared to cryogenic distillation, pressure-swing adsorption, and ion transfer membranes. Present-day polymeric membrane modules can compete with traditional techniques in specific energy consumption when the required oxygen molar fraction is low. A single-stage polymeric membrane module with a selectivity of 100 would be more efficient than other techniques up to an oxygen purity of approximately 92%.
Original languageEnglish
Pages (from-to)285-294
JournalApplied Energy
Volume94
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

Polymeric membranes
Energy utilization
membrane
Membranes
oxygen
Oxygen
Fibers
Vacuum
Air
Distillation
Cryogenics
Energy efficiency
countercurrent
air
distillation
Adsorption
energy efficiency
Geometry
fibre
energy consumption

Keywords

  • Oxygen enrichment
  • membrane
  • hollow fiber module
  • energy efficiency

Cite this

Meriläinen, Arttu ; Seppälä, Ari ; Kauranen, Pertti. / Minimizing specific energy consumption of oxygen enrichment in polymeric hollow fiber membrane modules. In: Applied Energy. 2012 ; Vol. 94. pp. 285-294.
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abstract = "The energy efficiency of the separation of air into an oxygen-enriched permeate and an oxygen-depleted residue stream in a polymeric hollow fiber membrane module is studied. On the basis of the modeled performance of the module, three different counter-current lumen-feed flow system configurations are compared and analyzed. The vacuum permeate configuration, where a vacuum is maintained on the permeate side of the membrane, is the most efficient single-stage process. A two-stage configuration, where the permeate of the first module is further enriched in a second stage, is also considered. By optimizing both stages the specific energy consumption can, in some cases, be further reduced. The optimization of the module geometry is not as important as the optimization of the feed parameters – the pressure ratio and stage cut. The results of polymeric membrane air separation are compared to cryogenic distillation, pressure-swing adsorption, and ion transfer membranes. Present-day polymeric membrane modules can compete with traditional techniques in specific energy consumption when the required oxygen molar fraction is low. A single-stage polymeric membrane module with a selectivity of 100 would be more efficient than other techniques up to an oxygen purity of approximately 92{\%}.",
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Minimizing specific energy consumption of oxygen enrichment in polymeric hollow fiber membrane modules. / Meriläinen, Arttu; Seppälä, Ari (Corresponding Author); Kauranen, Pertti.

In: Applied Energy, Vol. 94, 2012, p. 285-294.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Minimizing specific energy consumption of oxygen enrichment in polymeric hollow fiber membrane modules

AU - Meriläinen, Arttu

AU - Seppälä, Ari

AU - Kauranen, Pertti

PY - 2012

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N2 - The energy efficiency of the separation of air into an oxygen-enriched permeate and an oxygen-depleted residue stream in a polymeric hollow fiber membrane module is studied. On the basis of the modeled performance of the module, three different counter-current lumen-feed flow system configurations are compared and analyzed. The vacuum permeate configuration, where a vacuum is maintained on the permeate side of the membrane, is the most efficient single-stage process. A two-stage configuration, where the permeate of the first module is further enriched in a second stage, is also considered. By optimizing both stages the specific energy consumption can, in some cases, be further reduced. The optimization of the module geometry is not as important as the optimization of the feed parameters – the pressure ratio and stage cut. The results of polymeric membrane air separation are compared to cryogenic distillation, pressure-swing adsorption, and ion transfer membranes. Present-day polymeric membrane modules can compete with traditional techniques in specific energy consumption when the required oxygen molar fraction is low. A single-stage polymeric membrane module with a selectivity of 100 would be more efficient than other techniques up to an oxygen purity of approximately 92%.

AB - The energy efficiency of the separation of air into an oxygen-enriched permeate and an oxygen-depleted residue stream in a polymeric hollow fiber membrane module is studied. On the basis of the modeled performance of the module, three different counter-current lumen-feed flow system configurations are compared and analyzed. The vacuum permeate configuration, where a vacuum is maintained on the permeate side of the membrane, is the most efficient single-stage process. A two-stage configuration, where the permeate of the first module is further enriched in a second stage, is also considered. By optimizing both stages the specific energy consumption can, in some cases, be further reduced. The optimization of the module geometry is not as important as the optimization of the feed parameters – the pressure ratio and stage cut. The results of polymeric membrane air separation are compared to cryogenic distillation, pressure-swing adsorption, and ion transfer membranes. Present-day polymeric membrane modules can compete with traditional techniques in specific energy consumption when the required oxygen molar fraction is low. A single-stage polymeric membrane module with a selectivity of 100 would be more efficient than other techniques up to an oxygen purity of approximately 92%.

KW - Oxygen enrichment

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KW - hollow fiber module

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JO - Applied Energy

JF - Applied Energy

SN - 0306-2619

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