METHOD OF PRODUCTION OF ACTIVATED CARBON Russian patent published in 2005 - IPC

FIELD: heat treatment of solid carbon-containing materials for production of activated carbon.

SUBSTANCE: proposed method includes heating and carbonization of raw material in horizontal rotary furnace at continuous mode for 1.0-3.0 h at temperature of 650-850°C and rate of heating not exceeding 10°C/min; method includes also delivery of formed carbonisate to vertical activation furnace by batches without cooling them; activation of each batch is continued for ≤30 min at temperature of 750-950°C in mode of layer suspended by jet of gaseous activating agent; new batch of carbonisate is delivered after unloading the batch of finished product; proposed method includes also delivery of vapor-and-gas mixture from activation furnace to carbonization furnace in counter-flow of material being carbonized, directing the vapor-and-gas mixture from carbonization furnace to waste-heat boiler for after-burning, generation of low-pressure steam required for preparation of activating agent and decontamination of flue gases formed in waste-heat boiler.

EFFECT: intensification of heat-exchange process; improved quality of activated carbon; improved economical parameters due to saving of fuel; reduction of technological process duration.

5 cl, 1 dwg, 2 tbl, 4 ex