Integrated coal cleaning, liquefaction, and gasification process
- Pennington, NJ
Coal is finely ground and cleaned so as to preferentially remove denser ash-containing particles along with some coal. The resulting cleaned coal portion having reduced ash content is then fed to a coal hydrogenation system for the production of desirable hydrocarbon gases and liquid products. The remaining ash-enriched coal portion is gasified to produce a synthesis gas, the ash is removed from the gasifier usually as slag, and the synthesis gas is shift converted with steam and purified to produce the high purity hydrogen needed in the coal hydrogenation system. This overall process increases the utilization of as-mined coal, reduces the problems associated with ash in the liquefaction-hydrogenation system, and permits a desirable simplification of a liquids-solids separation step otherwise required in the coal hydrogenation system.
- DOE Contract Number:
- E(49-18)-1544
- Assignee:
- Hydrocarbon Research, Inc. (Lawrenceville, NJ)
- Patent Number(s):
- US 4217201
- OSTI ID:
- 863632
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
coal
cleaning
liquefaction
gasification
process
finely
ground
cleaned
preferentially
remove
denser
ash-containing
particles
resulting
portion
reduced
ash
content
fed
hydrogenation
production
desirable
hydrocarbon
gases
liquid
products
remaining
ash-enriched
gasified
produce
synthesis
gas
removed
gasifier
slag
shift
converted
steam
purified
purity
hydrogen
overall
increases
utilization
as-mined
reduces
associated
liquefaction-hydrogenation
permits
simplification
liquids-solids
separation
step
otherwise
required
coal cleaning
hydrocarbon gas
synthesis gas
liquid products
liquid product
gasification process
hydrocarbon gases
overall process
coal hydrogenation
separation step
ash content
containing particles
solids separation
reduced ash
finely ground
integrated coal
coal hydrogen
carbon gases
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