Framework for predicting the fractionation of complex liquid feeds via polymer membranes
Journal Article
·
· Journal of Membrane Science
- Georgia Institute of Technology, Atlanta, GA (United States); OSTI
- Georgia Institute of Technology, Atlanta, GA (United States)
- ExxonMobil Research and Engineering Co., Annandale, NJ (United States)
The separation of complex liquid hydrocarbon mixtures was recently demonstrated using the glassy polymer SBAD-1, showing that small molecule fractionation is possible by such organic membrane materials. Here, in this work, we develop a framework that will enable workable predictions of permeate flux and composition in complex hydrocarbon liquids through intrinsically porous glassy polymers. The predictions are made by incorporating experimentally-derived unary sorption and diffusion parameters in a Maxwell-Stefan framework coupled with multicomponent sorption models and various distinct diffusion phenomena. Across the range of sorption and diffusion phenomena considered, both the conventional Flory-Huggins model and the proposed Langmuir + Flory-Huggins sorption model combined with a simple average guest diffusivity or a more complex free-volume theory-based transport resulted in the lowest prediction error for three chosen multicomponent separations. The proposed Maxwell-Stefan framework simply requires pure component transport parameters to allow a fast approximation of the separation of multicomponent liquid hydrocarbon feeds that can potentially be extended to more complex feeds such as crude oil fractions.
- Research Organization:
- American Institute of Chemical Engineers (AIChE), New York, NY (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- EE0007888
- OSTI ID:
- 1977436
- Alternate ID(s):
- OSTI ID: 1819807
- Journal Information:
- Journal of Membrane Science, Journal Name: Journal of Membrane Science Vol. 640; ISSN 0376-7388
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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