Coal-oil slurry preparation
A pumpable slurry of pulverized coal in a coal-derived hydrocarbon oil carrier which slurry is useful as a low-ash, low-sulfur clean fuel, is produced from a high sulfur-containing coal. The initial pulverized coal is separated by gravity differentiation into (1) a high density refuse fraction containing the major portion of non-coal mineral products and sulfur, (2) a lowest density fraction of low sulfur content and (3) a middlings fraction of intermediate sulfur and ash content. The refuse fraction (1) is gasified by partial combustion producing a crude gas product from which a hydrogen stream is separated for use in hydrogenative liquefaction of the middlings fraction (3). The lowest density fraction (2) is mixed with the liquefied coal product to provide the desired fuel slurry. Preferably there is also separately recovered from the coal liquefaction LPG and pipeline gas.
- Research Organization:
- International Coal Refining Company, Allentown, PA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-78OR03054
- Assignee:
- International Coal Refining Company (Allentown, PA)
- Patent Number(s):
- 4,392,940
- Application Number:
- 06/252690
- OSTI ID:
- 864618
- Resource Relation:
- Patent File Date: 1981 Apr 09
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
slurry
preparation
pumpable
pulverized
coal
coal-derived
hydrocarbon
oil
carrier
useful
low-ash
low-sulfur
clean
fuel
produced
sulfur-containing
initial
separated
gravity
differentiation
density
refuse
fraction
containing
major
portion
non-coal
mineral
products
sulfur
lowest
content
middlings
intermediate
ash
gasified
partial
combustion
producing
crude
gas
product
hydrogen
stream
hydrogenative
liquefaction
mixed
liquefied
provide
desired
preferably
separately
recovered
lpg
pipeline
pumpable slurry
coal-oil slurry
coal product
liquefied coal
fraction containing
sulfur content
pulverized coal
coal liquefaction
major portion
lean fuel
ash content
slurry preparation
coal mineral
hydrogen stream
gas product
clean fuel
coal mine
partial combustion
hydrocarbon oil
containing coal
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