Process for processing coal

Details Process for processing coal Process for processing coal

1997-03-03

1998-11-03

McAvoy, Ellen M.

Fuel and related compositions

Coal treating process or product thereof

Removal of undesirable

44280, 44620, C10L 132, C10L 900

Patent

active

058302468

ABSTRACT:
A process for preparing an irreversibly dried coal in which coal with a moisture content of from about 5 to about 30 percent and a combined oxygen content of from about 10 to about 20 percent, and mineral oil with an initial boiling point of at least about 900 degrees Fahrenheit, are fed to a fluidized bed reactor with a fluidized bed density of from about 10 to about 40 pounds per cubic foot. The coal becomes coated with the mineral oil, and the coated coal is maintained within the fluidized bed at a temperature of from about 225 to about 500 degrees Fahrenheit for from about 1 to about 5 minutes while simultaneously comminuting and dewatering the coated coal.

REFERENCES:
patent: 4309192 (1982-01-01), Kubo et al.
patent: 5035721 (1991-07-01), Atherton
patent: 5527365 (1996-06-01), Coleman et al.
patent: 5556436 (1996-09-01), Yagaki et al.
patent: 5587085 (1996-12-01), Yoon et al.

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