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Refining and upgrading of synfuels from coal and oil shales by advanced catalytic processes

Technical Report ·
OSTI ID:6329526
Syncrude from the Integrated Two-Stage Liquefaction (ITSL) Process, derived from Illinois No. 6 coal, was refined to produce transportation fuels in an extensive program of laboratory and pilot plant studies. It was demonstrated that advanced, commercial petroleum processing technology can be used to refine this syncrude to gasoline, jet fuel, and diesel fuel. ITSL syndrude differs from petroleum crude in that it contains no residue and most of it boils in the middle distillate (diesel and jet fuel) boiling range. It contains less hydrogen than petroleum crudes. It also contains heteroatoms impurities that need to be removed to make finished transportation fuels. The ITSL oil was first hydrotreated to remove the heteroatoms and increase the hydrogen content. In a single hydrotreating stage, diesel fuel was produced with a cetane number of 44 at a yield of 101 LV %, based on the ITSL oil feed. To obtain a maximum of jet fuel, hydrotreated ITSL oil was hydrocracked to extinction in a two-stage hydrocracker. At 550/sup 0/F recycle cut point, the jet fuel yield was 84 LV % based on ITSL oil feed. Because of its high density and high volumetric energy content, this jet could be of particular interest as a military fuel. The make naphtha as the only liquid product, the ITSL oil was hydrocracked at a 350/sup 0/F recycle cut point. The 150-350/sup 0/F naphtha contained 90 LV % cyclics. Its properties make it an excellent feed to a catalytic reformer for production of high octane gasoline. The results reported here will be used in engineering studies to estimate the cost of upgrading ITSL oil. 39 refs., 23 figs., 78 tabs.
Research Organization:
Chevron Research Co., Richmond, CA (USA)
DOE Contract Number:
AC22-76ET10532
OSTI ID:
6329526
Report Number(s):
DOE/ET/10532-T25; ON: DE86004570
Country of Publication:
United States
Language:
English