FIELD: metallurgy industry.
SUBSTANCE: combustible waste burning method, when cement clinker is being manufactured, involves pre-heating of cement raw mixture in system (1) of heaters with calcinator (3) or without it, burning in clinker in burning furnace (5) and cooling in further cooling device (7) for clinker. Wastes are introduced through inlet hole (11) for wastes and supported with load-carrying surface (21) built in a separate chamber (9). Wastes are dynamically transported, thus simultaneously subjecting them to burning, through chamber to its outlet hole (23); at that, at least some part of burning the wastes in the chamber is performed in stoichiometric shortage environment, hot exhaust gases obtained relative to waste burning are released to the system of heaters for heating cement raw mixture. Slag formed during waste combustion is removed from chamber (9). Exhaust gases from burning furnace (5), which contain NOx, are supplied to chamber (9) and through it in a counterflow in relation to the flow of wastes.
EFFECT: reducing NOx emission.
8 cl, 6 dwg
Authors
Dates
2009-11-20—Published
2005-05-10—Filed