METHOD AND DEVICE FOR PRODUCING CEMENT CLINKER Russian patent published in 2017 - IPC C04B7/44 F27B7/20 F26B23/00 

FIELD: chemistry.

SUBSTANCE: raw meal is preheated in the preheater using hot exhaust gases from the clinker furnace, wherein heated raw meal, which can optionally be calcined in the calciner, is fired to produce clinker in the clinker furnace, the heater comprises, at least, one of several cyclone branches suspended heat exchangers, through which furnace exhaust gas is sequentially flowing and in which raw meal is preheated in several steps, the partial furnace flow of off-gas is withdrawn such that only the remaining residual furnace waste gas stream is used to preheat raw meal, the withdrawn partial furnace waste gas stream and the furnace effluent from the last cyclone overhead heat exchanger (9) in the furnace flue gas stream flow are supplied on thermal utilisation, being mixed with each other or separately. An installation for producing the cement clinker, in particular for carrying out the said process, comprising a clinker furnace (2), which is connected to a clinker cooler (6) on the outlet end side and connected to a heater (3) at the outlet side and, optionally, to the calciner (4), the heater (3) comprising, at least, one of several branches of the cyclone suspended heat exchangers (8, 9, 10), through which exhaust gas of the furnace can consistently proceed along the flow path, in which raw meal is preheated in several stages, and to divert a partial stream of furnace exhaust gas from the flow path provides a discharge duct (16), which outlet duct (16) and hot flue gases (13) coming from the last cyclone suspension heat exchanger (9) in the flow direction of furnace exhaust gas located with the possibility of mixing these furnace exhaust gases and supply them to the thermal disposal or feed them on a heat recycling separately. The invention is developed in dependent claims of the invention formula.

EFFECT: improving the efficiency of the method for the production of cement clinker.

19 cl, 2 dwg