Process for hydrocracking carbonaceous material in liquid carrier
Solid carbonaceous material is hydrocracked to provide aliphatic and aromatic hydrocarbons for use as gaseous and liquid fuels or chemical feed stock. Particulate carbonaceous material such as coal in slurry with recycled product oil is preheated in liquid state to a temperature of 600/sup 0/-1200/sup 0/ F. In the presence of hydrogen gas. The product oil acts as a sorbing agent for the agglomerating bitumens to minimize caking within the process. In the hydrocracking reactor, the slurry of oil and carbonaceous particles is heated within a tubular passageway to vaporize the oil and form a gas-solid mixture which is further heated to a hydropyrolysis temperature in excess of 1200/sup 0/ F. The gas-solid mixture is quenched by contact with additional oil to condense normally liquid hydrocarbons for separation from the gases. A fraction of the hydrocarbon liquid product is recycled for quenching and slurrying with the carbonaceous feed. Hydrogen is recovered from the gas for recycle and additional hydrogen is produced by gasification of residual char.
- Assignee:
- Department of Energy
- Patent Number(s):
- US 4234408
- OSTI ID:
- 6544062
- Country of Publication:
- United States
- Language:
- English
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Process for hydrocracking carbonaceous material in liquid carrier
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Related Subjects
010406* -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
04 OIL SHALES AND TAR SANDS
040402 -- Oil Shales & Tar Sands-- Surface Methods
08 HYDROGEN
080107 -- Hydrogen-- Production-- Coal Gasification
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTIONS
COAL
CRACKING
DECOMPOSITION
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASIFICATION
HYDROCRACKING
HYDROGEN
HYDROGEN PRODUCTION
MATERIALS
MIXTURES
NONMETALS
ORGANIC SOLVENTS
PYROLYSIS
PYROLYSIS PRODUCTS
RECOVERY
RECYCLING
SLURRIES
SOLVENTS
SUSPENSIONS
THERMOCHEMICAL PROCESSES