Fuel and related compositions – Solid carbonaceous fuel dispersed in a liquid medium – The liquid medium is – or contains – hydrocarbon
Reexamination Certificate
2004-10-25
2008-10-07
Toomer, Cephia D (Department: 1797)
Fuel and related compositions
Solid carbonaceous fuel dispersed in a liquid medium
The liquid medium is, or contains, hydrocarbon
C044S626000
Reexamination Certificate
active
07431744
ABSTRACT:
A method for manufacturing a solid fuel includes the steps of partially or completely separating finely powdered coal from pulverized low-rank coal; mixing the separated low-rank coal with a mixed oil containing a heavy oil and a solvent oil to produce an untreated slurry; heating the untreated slurry to dehydrate the low-rank coal and filling the pores of the low-rank coal with the mixed oil; and separating the solid fuel from the heated slurry by solid-liquid separation. The manufacturing method further includes the step of adding the finely powdered coal separated from the low-rank coal to the solid fuel produced by the solid-liquid separation of the heated slurry. The finely powdered coal separated from the low-rank coal has an average particle size of 0.5 mm or less. An apparatus for the manufacturing method is also disclosed.
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Deguchi Tetsuya
Katsushima Shin-ichi
Shigehisa Takuo
Sugita Satoru
(Kobe Steel, Ltd.)
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toomer Cephia D
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