METHOD AND DEVICE FOR CLEANING GASES FROM DETRIMENTAL IMPURITIES Russian patent published in 1995 - IPC

FIELD: cleaning of exhaust gases. SUBSTANCE: exhaust gases are cleaned by catalyst reburning. The second component of reburning mixture is iron chips. Mass relation of components is 9:1. Device for gas cleaning has reactor with catalyst in form of a mixture. Reactor is provided with unit for feeding gases to be cleaned and unit for feeding fuel. The first unit is provided with ejector preferably. The second ejector is connected with air intake and mounted at point of exit of gases from the reactor. The other variant of the device for gas cleaning has unit for supplying gases, reactor with catalyst, input ejector, and reactor for supplying air. Catalyst is disposed in form of several sections at several levels. Reactor has water jacket for cooling. The second ejector, connected with turbo-compressor, is mounted at the output of reactor. Steam boiler, heat exchanger, and turbo-pump are mounted at output of the reactor preferably in series. There is unit for catching SO₂ in form of shower chambers; the unit is mounted behind the turbo-pump. Cooling tower with coil is mounted behind the units. EFFECT: improved quality of cleaning. 3 cl, 7 cl, 3 dwg