Subcritical CO{sub 2} retorting vs. supercritical CO{sub 2} extraction of oil shale
Book
·
OSTI ID:257137
- Univ. of Akron, OH (United States)
Carbon dioxide can be used effectively for extraction of hydrocarbons from various oil shales. It can be used for subcritical retorting for enhanced oil recovery as well as for supercritical extraction of hydrocarbons. In this paper, the two modes of carbon dioxide extraction of oil shale were experimentally investigated, compared, and analytically assessed on israel shale. The supercritically extracted oil shows a substantially narrower boiling point distribution, indicating a better quality of product. The supercritical extract also contains a lesser amount of the nitrogen compound that is detrimental to the subsequent catalytic upgrading. However, both supercritical and subcritical carbon dioxide extractions exhibit many advantages in processing and product quality when compared to the conventional nitrogen retorting.
- OSTI ID:
- 257137
- Report Number(s):
- CONF-950952--
- Country of Publication:
- United States
- Language:
- English
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