Apparatus and method for the production of cement clinker

Details Apparatus and method for the production of cement clinker Apparatus and method for the production of cement clinker

F - Mech Eng,Light,Heat,Weapons

27

B

F27B 7/20 (2006.01) C04B 7/36 (2006.01) C04B 7/43 (2006.01)

Patent

CA 2563555

Disclosed are an installation and a method for producing cement clinker, in which raw meal is preheated in a heat exchanger and is burned in a furnace so as to obtain clinker. The exhaust gases of the furnace successively penetrate the heat exchanger and a catalytic converter. The exhaust gases are analyzed upstream and/or downstream of the catalytic converter while the preheated raw meal is precalcined in a calcinator. Providing a calcinator has the additional advantage for the subsequent catalytic exhaust gas purification process of creating greater exhaust gas temperatures such that the reactions occurring in the catalytic converter take place at a faster pace and thus at a greater throughput, thereby allowing the required volume for the catalytic converter to be decreased and thus the capital expenditures to be reduced.

Installation et procédé de fabrication de clinker de ciment, procédé dans lequel la farine crue de ciment est préchauffée dans un échangeur thermique et est cuite dans un four de manière à obtenir un clinker, les gaz brûlés provenant du four circulent successivement à travers l'échangeur thermique et un catalyseur, ces gaz étant analysés en amont et/ou an aval du catalyseur, et la farine crue de ciment préchauffée est précalcinée dans un calcinateur. La présence d'un calcinateur offre en outre l'avantage, pour le processus ultérieur de purification catalytique des gaz brûlés, d'obtenir des températures plus élevées de ces gaz, telles que les réactions intervenant dans le catalyseur s'effectuent plus rapidement et, par conséquent, avec un rendement plus élevé, ce qui permet de réduire le volume requis de catalyseur et de diminuer les frais d'investissement.

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