Process for producing fluid fuel from coal

Patent · Sat Jan 01 00:00:00 EST 1977

OSTI ID:862896

Hyde, Richard W ^[1]; Reber, Stephen A ^[2]; Schutte, August H ^[3]; Nadkarni, Ravindra M ^[4]

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1. Winchester, MA
2. Waltham, MA
3. Lexington, MA
4. Arlington, MA

Process for producing fluid fuel from coal. Moisture-free coal in particulate form is slurried with a hydrogen-donor solvent and the heated slurry is charged into a drum wherein the pressure is so regulated as to maintain a portion of the solvent in liquid form. During extraction of the hydrocarbons from the coal, additional solvent is added to agitate the drum mass and keep it up to temperature. Subsequently, the pressure is released to vaporize the solvent and at least a portion of the hydrocarbons extracted. The temperature of the mass in the drum is then raised under conditions required to crack the hydrocarbons in the drum and to produce, after subsequent stripping, a solid coke residue. The hydrocarbon products are removed and fractionated into several cuts, one of which is hydrotreated to form the required hydrogen-donor solvent while other fractions can be hydrotreated or hydrocracked to produce a synthetic crude product. The heaviest fraction can be used to produce ash-free coke especially adapted for hydrogen manufacture. The process can be made self-sufficient in hydrogen and furnishes as a by-product a solid carbonaceous material with a useful heating value.

• DOE Contract Number: E(49-18)-1754
• Assignee: Arthur D. Little, Inc. (Cambridge, MA)
• Patent Number(s): US 4039424
• OSTI ID: 862896
• Country of Publication: United States
• Language: English

Related Subjects

process
producing
fluid
fuel
coal
moisture-free
particulate
form
slurried
hydrogen-donor
solvent
heated
slurry
charged
drum
pressure
regulated
maintain
portion
liquid
extraction
hydrocarbons
additional
added
agitate
mass
temperature
subsequently
released
vaporize
extracted
raised
conditions
required
crack
produce
subsequent
stripping
solid
coke
residue
hydrocarbon
products
removed
fractionated
cuts
hydrotreated
fractions
hydrocracked
synthetic
crude
product
heaviest
fraction
ash-free
especially
adapted
hydrogen
manufacture
self-sufficient
furnishes
by-product
carbonaceous
material
useful
heating
value
heating value
especially adapted
hydrocarbon products
donor solvent
carbonaceous material
solid carbonaceous
particulate form
liquid form
solid carbon
hydrogen-donor solvent
hydrocarbon product
fluid fuel
conditions required
synthetic crude
coal process
carbon product
producing fluid
/208/201/