Hydrogenation of coal
Patent
·
OSTI ID:7359808
Coal or other solid carbonaceous material is fed under a hydrogenation pressure of about 1,000 to 5,000 psi, in the absence of a pasting oil, to a closed, cyclic, high pressure system including a hydrogenation reactor and a reformer, and is contacted, preferably in the presence of a hydrogenation catalyst, with a stream of superheated steam, hydrogen and carbon monoxide-containing gases which have been produced by passing steam, oxygen and hydrocarbon-containing recycle gases, optionally with added solid carbonaceous material, through the reformer. The hot gaseous stream heats the coal to hydrogenation temperature and the coal is hydrogenated by hydrogen which to a large extent is produced in situ in contact with the coal through steam-carbon monoxide and steam-carbon reactions. The coal is effectively and economically hydrogenated to produce liquid hydrocarbon products and gases for recycling. Tars recovered from the product stream may be hydrogenated in like manner at system pressure with the products of tar hydrogenation being combined with the main product steam.
- Assignee:
- TIC; ERA-01-025259; EDB-76-073363
- Patent Number(s):
- US 3926775
- OSTI ID:
- 7359808
- Country of Publication:
- United States
- Language:
- English
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