Upgrading low-quality natural gas by means of highly performing polymer membranes
Conference
·
OSTI ID:426249
- Syracuse Univ., NY (United States)
The objective of the present study is to assess the potential usefulness of membrane separation processes for removing acid gases (CO{sub 2} and H{sub 2}S) from low-quality natural gas. Nonporous {open_quotes}dense{close_quotes} (homogeneous) membranes made from new, highly gas-selective polymers are being evaluated for this purpose. The project comprises gas permeability and separation measurements with CH{sub 4}/CO{sub 2} and CH{sub 4}/CO{sub 2}/H{sub 2}S mixtures having compositions in ranges found in low-quality natural gas. Process design studies and economic evaluations are also being made to determine the cost of upgrading low-quality natural gas with the most promising membranes. Until recently, the membranes used in this study were made from new types of polyimides synthesized in our laboratory. The polyimide membranes were found to exhibit a very high CO{sub 2}/CH{sub 4} selectivity but a relatively low H{sub 2}S/CH{sub 4} selectivity. Therefore, different types of polymers that exhibit a high H{sub 2}S/CH{sub 4} selectivity are also being evaluated.
- Research Organization:
- USDOE Morgantown Energy Technology Center, WV (United States)
- OSTI ID:
- 426249
- Report Number(s):
- DOE/METC--95/1017-Vol.2; CONF-950494--Vol.2; ON: DE95009704
- Country of Publication:
- United States
- Language:
- English
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