METHOD OF ACTIVATING COAL PARTICLES IN VERTICAL AXIALLY SYMMETRICAL ANNULAR CHAMBER Russian patent published in 2013 - IPC C10L9/00 F27B7/36 C10L9/08 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of activating coal particles in a vertical axially symmetrical annular chamber by batchwise loading of the area under the hearth with size-fractioned particles, heating, removing moisture and volatile substances, as well as cooling with organised ascending-descending annular circulatory movement of particles with heated and cooled flue gases and steam, fed from the side of the roof cover by axial vertically descending streams, removal during activation and release into the furnace of a heat-producing apparatus of gaseous activation products, batchwise unloading of activated cooled particles from the area under the hearth, characterised by that circulation of particles in the ascending-descending annular stream is carried out by axial vertically descending streams of heated flue gases at the first, then a mixture of heated flue gases and steam and at the end cooled flue gases, fed into the annular chamber. The volume of the loaded portions of coal particles V_y=(0.1-0.7)V_K the volume of the annular chamber, m³; the speed of the medium in the ascending branch of the circulation annular stream w_n=(0.1-0.6)w₀ the speed of the axial vertically descending stream of flue gases and steam, m/s; and content of oxygen in the fed axial vertically descending streams maintained at O₂=(0.04-0.16).

EFFECT: maximum removal of volatile substances from coal particles with minimum burning of coke residue, providing maximum sorption activity of the obtained product.

1 cl, 6 dwg