Production of low sulfur heavy oil from coal
Patent
·
OSTI ID:7268206
A process for hydrogenating coal to provide a low sulfur, heavy oil product, comprising introducing said coal in the substantial absence of a slurrying medium into a hydrogenation zone of a closed cyclic system having hydrogenation, purifying and oxygen-steam reforming zones, said system being maintained at a pressure in the range of about 500 to 2000 psi, hydrogenating said coal in the hydrogenation zone with hot gases containing hydrogen, carbon monoxide and steam at a temperature in the range of about 820/sup 0/ to 1000/sup 0/F, and with a contact time of no more than a few minutes, the reaction conditions being correlated to provide an effluent stream containing excess hydrogen, heavy liquid and gaseous hydrocarbons and gaseous impurities including sulfur, removing the heavy liquid hydrocarbons from said effluent stream without substantial reduction in system pressure, removing sulfur from the resulting effluent gas stream in said purifying zone without substantial reduction in system pressure, introducing the resulting hydrogen and hydrocarbon gas stream into said reforming zone, reforming said hydrocarbons in said zone with oxygen and steam to provide said hot gases containing hydrogen, carbon monoxide, and steam and introducing the hot gases from the reforming zone into the hydrogenation zone to complete the cycle.
- Assignee:
- TIC; ERA-02-000053; EDB-76-078511
- Patent Number(s):
- US 3954596
- OSTI ID:
- 7268206
- Country of Publication:
- United States
- Language:
- English
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