FIELD: process engineering.
SUBSTANCE: method wherein extra material is fed into flue gas by, at least, one feeder 12a, 12b located in said flue gases. Note here that said feeder comprises, at least, one feed nozzle 21. Note also that said extra material is fed into flue gases over, in fact, entire cross-section area of furnace 2 or channel 1 by aforesaid feeder made up of hollow cooled shell beam. Feeder comprises, at least, one nozzle 21 to feed extra material. Note here that feeder 12a, 12b is composed of tubes 15 carrying heat exchange medium. Note that said tubes are connected together to make hollow shell beam to accommodate, at least, one said nozzle 21. Note that feeder length is selected so that said feeder is located between furnace opposite walls or those of channel 11.
EFFECT: uniform feed of extra material, optimised designed.
20 cl, 6 dwg
