Process for the production of activated carbon from a moist orga

Details Process for the production of activated carbon from a moist orga Process for the production of activated carbon from a moist orga

1979-11-27

1982-02-02

Garris, Bradley

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

201 33, 423449, C01B 3110, C10B 4902

Patent

active

043138497

ABSTRACT:
Coke or activated carbon is produced from a moist organic substance, for example from a residue from the production of furfural. Initially the moist organic substance is introduced together with hot flue gases into a drying zone of a cylinder furnace and the organic substance is mixed with the hot gases and dried according to the co-current principle. Subsequent thereto the dried substance and the gases are directed into a coking zone of the same furnace, an oxygen-bearing gas also being introduced into said coking zone and the volatile constituents of the organic substance being reduction burned according to the co-current principle so as to produce a coked product. When coke is to be produced, said coked product is withdrawn together with gases from the trailing end of the furnace and the gases are separated therefrom. When producing activated carbon, the coked organic material and the hot moist gases are mixed with each other in an activation zone according to the co-current principle, and with no additional water vapor added, so as to obtain an activated product and, finally, said product is withdrawn from the furnace and the gases are separated therefrom. Part of the hot gases obtained may be recirculated to the drying zone.

REFERENCES:
patent: 2287437 (1942-06-01), Lesher et al.
patent: 2650190 (1953-08-01), Steinschlaeger
patent: 2725346 (1955-11-01), Farber
patent: 3298928 (1967-01-01), Esterer
patent: 3783128 (1974-01-01), Thompson
patent: 3950267 (1976-04-01), Arakawa et al.
patent: 3966560 (1976-06-01), Farago et al.
patent: 4122036 (1978-10-01), Lewis

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