Patent ID: 9028248
Filing Date: 2015-05-12
Classification: B01D,C04B,F27B,F27D

Abstract:
1. Method for producing cement clinker having a furnace system, wherein raw material is preheated in a preheater by means of hot exhaust gases of the furnace system, the hot exhaust gas, downstream of the preheater, is dedusted in a preliminary dust removal device to a residual dust concentration of a maximum of 20 g/Nm the pre-dedusted exhaust gas is cleaned in a selective catalytic flue gas cleaning installation, at least a portion of the exhaust gas cleaned in the flue gas cleaning installation is supplied to a cooling device, bypassing a raw material grinding installation, before the residual dust of the exhaust gas is separated in a process filter, characterised in that the exhaust gas is cooled in the cooling device to temperatures of a maximum of 140° C. and at least a portion of the residual dust separated in the process filter is flushed out in order to remove the mercury.