Low-pressure hydrocracking of coal-derived Fischer-Tropsch waxes to diesel
- Sasol Technology Research and Development, Sasolburg (South Africa). Fischer-Tropsch Refinery Catalysis
Coal-derived low-temperature Fischer-Tropsch (LTFT) wax was hydrocracked at pressures of 3.5-7.0 MPa using silica-alumina-supported sulfided NiW/NiMo and an unsulfided noble metal catalyst, modified with MoO{sub 3}. A low-pressure operation at 3.5 MPa produced a highly isomerized diesel, having low cloud points (from -12 to -28{sup o}C) combined with high cetane numbers (69-73). These properties together with the extremely low sulfur ({lt}5 ppm) and aromatic ({lt}0.5%) contents place coal/liquid (CTL) derived distillates as highly valuable blending components to achieve Eurograde diesel specifications. The upgrading of coal-based LTFT waxes through hydrocracking to high-quality diesel fuel blend components in combination with commercial-feasible coal-integrated gasification combined cycle (coal-IGCC) CO{sub 2} capture and storage schemes should make CTL technology more attractive. 28 refs., 7 figs., 8 tabs.
- OSTI ID:
- 20905889
- Journal Information:
- Energy and Fuels, Vol. 21, Issue 3; Other Information: dieter.leckel@sasol.com; ISSN 0887-0624
- Country of Publication:
- United States
- Language:
- English
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