Fuel and related compositions – Solid carbonaceous fuel dispersed in a liquid medium
Patent
1997-10-24
2000-10-17
Howard, Jacqueline V.
Fuel and related compositions
Solid carbonaceous fuel dispersed in a liquid medium
44620, C10L 132
Patent
active
061324787
ABSTRACT:
In a coal-water slurry producing system, low grade coal is wet-ground to not greater than 3 mm in particle size to produce a ground coal slurry. An upgrading treatment is applied to the ground coal slurry under a pressurized hydrothermal atmosphere not less than 300.degree. C. to produce an upgraded coal slurry. The upgraded coal slurry is subjected to a dehydration treatment to produce an upgraded coal cake and a filtrate. A final coal-water slurry is produced from the upgraded coal cake. The filtrate is recycled for producing the ground coal slurry. A slurry transfer mechanism is provided in the coal-water slurry producing system for ensuring a stable transfer of the upgraded coal slurry from a high-pressure slurry vessel to a low-pressure slurry vessel.
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Asakura Masanori
Furuta Akio
Goto Takashi
Katagiri Tsutomu
Ogawa Jin
Howard Jacqueline V.
JGC Corporation
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