Comments on the role of the solvent in supercritical fluid extraction of coal
β Scribed by John R. Kershaw
- Book ID
- 108322379
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 221 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0016-2361
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The gasification rate of chars from the supercritical fluid extraction of coals was measured in a carbon dioxide atmosphere using an isothermal thermogravimetric analyzer. The chars were prepared by pyrolysing residual coals extracted with toluene or toluene-tetralin mixtures as supercritical solven
Aqueous supercritical fluids at pressures of 7 to 10 MPa and temperatures from 350 to 500Β°C are effective media for the extraction of oils from coals. The most reactive coal macerals are exinite and resinite, and the oils formed have a high content of straight-chain paraffms. Vitrinite is converted