Hydrogen-donor coal liquefaction process
Patent
·
OSTI ID:5151390
a description is given of a hydrogen-donor liquefaction process for converting coal or similar carbonaceous solids into lower molecular weight liquid hydrocarbons which comprises: (A) contacting said carbonaceous solids with a hydrogendonor solvent and molecular hydrogen at a temperature in the range between about 775/sup 0/F and about 950/sup 0/F in a liquefaction zone operated such that the temperature remains substantially constand throughout said zone and wherein said carbonaceous solids are converted into lower molecular weight liquid hydrocarbons to form a liquefaction effluent, said hydrogen-donor solvent having a donatable hydrogen concentration higher than the thermodynamic equilibrium concentration at the temperature in said liquefaction zone when said solvent enters said zone; (B) maintaining a higher concentration of catalytic material that is active in promoting the hydrogenation of aromatics to form hydroaromatics in said liquefaction zone near said outlet of said zone than near said inlet of said zone ; and (C) recovering liquid hydrocarbonaceous products from said liquefaction effluent.
- Assignee:
- Exxon Research and Engineering Co
- Patent Number(s):
- US 4210518
- OSTI ID:
- 5151390
- Country of Publication:
- United States
- Language:
- English
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