Process for coal liquefaction employing selective coal feed
An improved coal liquefaction process is provided whereby coal conversion is improved and yields of pentane soluble liquefaction products are increased. In this process, selected feed coal is pulverized and slurried with a process derived solvent, passed through a preheater and one or more dissolvers in the presence of hydrogen-rich gases at elevated temperatures and pressures, following which solids, including mineral ash and unconverted coal macerals, are separated from the condensed reactor effluent. The selected feed coals comprise washed coals having a substantial amount of mineral matter, preferably from about 25-75%, by weight, based upon run-of-mine coal, removed with at least 1.0% by weight of pyritic sulfur remaining and exhibiting vitrinite reflectance of less than about 0.70%.
- 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):
- 4,397,732
- Application Number:
- 06/347,836
- OSTI ID:
- 864650
- Country of Publication:
- United States
- Language:
- English
Dependence of coal liquefaction behaviour on coal characteristics. 1. Vitrinite-rich samples
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journal | January 1975 |
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Related Subjects
25-75
70
amount
ash
based
coal
coal conversion
coal feed
coal liquefaction
coal macerals
coals
comprise
condensed
conversion
derived
derived solvent
dissolvers
effluent
elevated
elevated temperature
elevated temperatures
employing
exhibiting
feed
feed coal
feed coals
following
gases
hydrogen-rich
hydrogen-rich gas
hydrogen-rich gases
improved
improved coal
including
including mineral
increased
liquefaction
liquefaction process
liquefaction product
liquefaction products
macerals
matter
mineral
mineral ash
mineral matter
passed
pentane
pentane soluble
preferably
preheater
presence
pressures
process
process derived
products
provided
provided whereby
pulverized
pyritic
pyritic sulfur
reactor
reactor effluent
reflectance
remaining
removed
rich gas
run-of-mine
selected
selective
separated
slurried
solids
soluble
solvent
substantial
substantial amount
sulfur
temperatures
unconverted
unconverted coal
vitrinite
washed
weight
whereby
yields