Process for modification of coal

Details Process for modification of coal Process for modification of coal

1985-06-21

1987-02-24

Silbaugh, Jan

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

264 83, 264109, C10L 500

Patent

active

046455132

ABSTRACT:
A process for upgrading the characteristics of moisture containing coal which comprises drying coal until the water content reaches substantially zero, rapidly heating the dried coal to a molding temperature of from 200.degree. to 400.degree. C. within a time of from 1 to 10 minutes, compression molding the dried coal under elevated pressure, oxidizing the molded coal and then steaming said oxidized molded coal in saturated moisture at from 80.degree. C. to 150.degree. C. from 2 to 8 hours to provide a dry upgraded coal having a decreased tendency to self-ignite.

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patent: 4396394 (1983-08-01), Li et al.
patent: 4400176 (1983-08-01), Kutta
patent: 4402706 (1983-09-01), Wunderlich
patent: 4403996 (1983-09-01), Matsuura et al.
patent: 4508539 (1985-04-01), Nakai

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