WASTE-HEAT BOILER AND METHOD OF RECOVERY OF WASTE HEAT OF HOT GASES Russian patent published in 1998 - IPC

FIELD: waste-heat boilers making use of heat of hot gases of furnace for melting material in suspended state, for example, melting furnaces with fluidized bed. SUBSTANCE: boiler includes radiation and convection sections; arch of front end of radiation section is provided with raised portion with transversal passage behind it; transversal passage is formed by two panel walls and bottom plate connecting them. Flow of hot gases entering the radiation section is deflected from its arch forming at least two separate controllable turbulent flows with additional weak turbulent streams, thus increasing total time of presence of hot gases in radiation section and separation of dust-like particles mainly from front end of radiation section. EFFECT: enhanced efficiency of recovery of waste heat. 9 cl, 2 dwg