FIELD: technological processes.
SUBSTANCE: present invention relates to a process for treating black liquor containing pyrolyzed black liquor in a fluidized bed reactor to produce solid particles and pyrolyzed black liquor gas, heating the solid mass, returning the heated solid mass to the fluidized bed reactor for use in the pyrolysis reaction; condensing the pyrolyzed black liquor gas to produce a condensate and recovering heat and a residual gas released during the condensation process to heat the solid mass to a predetermined temperature that is required for the pyrolysis.
EFFECT: method for treating black liquor is proposed.
17 cl, 1 dwg
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