BOILER PLANT Russian patent published in 1998 - IPC

FIELD: power engineering; heating boiler plants. SUBSTANCE: exhaust gas duct of boiler is provided with economizer. Thermocatalyst 3 is made from vertical active elements forming cellular structure and is located outside the boiler together with separating device 4 in individual shell 1 provided with dust accumulating bin 4. Thermocatalyst 5 is arranged in shell between gas supply and discharge branch pipes 9 and 6, respectively forming upper and lower chambers. Volume of lower chamber exceeds that of upper one. Branch pipe 9 is connected to supply gas duct of boiler and branch pipe 6 is connected to exhaust gas duct of boiler in zone of economizer. Ends of bypass pipe line are connected to branch pipe 9 and to boiler in zone of high-temperature gases. EFFECT: enhanced efficiency. 2 dwg