Characterization of Thermally Cross-Linkable Hollow Fiber Membranes for Natural Gas Separation

Type
Article

Authors
Chen, Chien-Chiang
Miller, Stephen J.
Koros, William J.

KAUST Grant Number
KUS-I1-011-21

Online Publication Date
2012-02-02

Print Publication Date
2013-01-23

Date
2012-02-02

Abstract
The performance of thermally cross-linkable hollow fiber membranes for CO2/CH4 separation and the membrane stability against CO2 plasticization was investigated. The fiber membranes were thermally cross-linked at various conditions. Cross-linking temperature was found to have a significant effect, while shorter soak time and the presence of trace oxidizer (O2 or N2O) had a negligible effect. The cross-linked fibers were tested using high CO2 content feeds (50-70% CO2) at a variety of feed pressures (up to 1000 psia), temperatures, and permeate pressures (up to 100 psia) to evaluate membrane performance under various realistic operating conditions. The results demonstrated that cross-linking improves membrane selectivity and effectively eliminates swelling-induced hydrocarbon loss at high pressures. Excellent stability under aggressive feeds (with CO2 partial pressure up to 700 psia) suggests that cross-linked hollow fiber membranes have great potential for use in diverse aggressive applications, even beyond the CO2/CH4 example explored in this work. © 2012 American Chemical Society.

Citation
Chen C-C, Miller SJ, Koros WJ (2013) Characterization of Thermally Cross-Linkable Hollow Fiber Membranes for Natural Gas Separation. Ind Eng Chem Res 52: 1015–1022. Available: http://dx.doi.org/10.1021/ie2020729.

Acknowledgements
We thank Chevron Energy Technology Company for the financial support and Award KUS-I1-011-21 made by King Abdullah University of Science and Technology (KAUST).

Publisher
American Chemical Society (ACS)

Journal
Industrial & Engineering Chemistry Research

DOI
10.1021/ie2020729

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