METHOD OF PRODUCING ACTIVATED CARBON Russian patent published in 2019 - IPC C10B53/00 

FIELD: timber industry.

SUBSTANCE: invention relates to wood processing industry and can be used for production of activated carbon. Activated carbon production method includes stages of convective drying of crushed wood wastes by recirculating combustion gases at temperature of 250 °C, pyrolysis of wood wastes with separation of pyrolysis gases to combustible gases and liquid medium, activation of coal with superheated steam at temperature of 900 °C with separation of combustible activation gases and coal cooling in two stages. Pyrolysis is carried out by conductive heating of pyrolysis zone by burning in its jacket of separated combustible gases with pyrolysis and activation stages. Coal cooling at the first stage is carried out to temperature of 90–100 °C by spraying 15÷20 % of total coal volume with water separated from recirculating furnace gases and activation gases, and the rest part of coal volume is cooled by convection with formed vapors. Coal cooling at the second stage is carried out by reducing pressure to 3–6 kPa, wherein for activation of coal, steam is used from the first stage of coal cooling, heated by furnace gases.

EFFECT: invention provides creation of energy-saving method of producing activated carbon.

1 cl, 1 dwg