Separation of CO2 from humidified ternary gas mixtures using thermally rearranged polymeric membranes
- Title
- Separation of CO2 from humidified ternary gas mixtures using thermally rearranged polymeric membranes
- Author
- 이영무
- Keywords
- Gas separation; Thermally rearranged polymers; CO2 separation; Microporous polymers; Membranes
- Issue Date
- 2015-12
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF MEMBRANE SCIENCE, v. 492, Page. 257-262
- Abstract
- The recently developed thermally rearranged (TR) polymeric membranes displayed superior gas separation properties over conventional polymeric membranes, owing to the presence of micro-pores appropriately tuned in cavities size and distribution, thus offering great advantages in gas separation applications, especially in CO2 capture from post-combustion flue gas streams. In this work, the transport properties (flux, permeance and selectivity) of TR polymeric hollow fiber membranes were evaluated with both single gases (CO2, N-2, O-2) and ternary gas mixture (CO2:N-2: O-2=15:80:5) at different temperatures (25, 50, 75 degrees C) and trans-membrane pressure differences (2-5 bar). The results revealed that the CO2 permeance measured under the mixed-gas condition remained the same as the single gas CO2 permeance, while the permeances of other gases decreased, thus leading to a favored increase in selectivity. The effect of water vapor in a ternary gas mixture was studied for the first time, considering that most of the streams of interest contain large amount of water. The presence of water vapor induced a significant permeance decrease for all the three components and a negligible reduction in selectivity. Globally the membranes showed good performance in the whole range of operating conditions investigated. (C) 2015 Elsevier B.V. All rights reserved.
- URI
- http://www.sciencedirect.com/science/article/pii/S0376738815005128?via%3Dihubhttp://hdl.handle.net/20.500.11754/29541
- ISSN
- 0376-7388; 1873-3123
- DOI
- 10.1016/j.memsci.2015.05.072
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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