INSTALLATION FOR PRODUCING CEMENT CLINKER, AND METHOD FOR OPERATING ONE SUCH INSTALLATION

A cement clinker production line with a calcining stage connected upstream of the rotary tubular kiln including an integrated calcining combustion chamber, with a CO-containing reduction zone whose size and reduction potential can be adapted to different NOx contents contained in the kiln exhaust ga...

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Bibliographische Detailangaben
Hauptverfasser:	SCHUERMANN, HEIKO, ECKERT, CARSTEN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING LIME, MAGNESIA MECHANICAL ENGINEERING METALLURGY OPEN SINTERING OR LIKE APPARATUS OVENS REFRACTORIES RETORTS SLAG TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	A cement clinker production line with a calcining stage connected upstream of the rotary tubular kiln including an integrated calcining combustion chamber, with a CO-containing reduction zone whose size and reduction potential can be adapted to different NOx contents contained in the kiln exhaust gas and/or different types of secondary fuels used in the combustion chamber. The combustion chamber has an upper, raw-meal-free reducing zone with a feed for secondary fuels, and first tertiary partial airstream with sub-stoichiometric fuel combustion for gasifying the secondary fuels. The combustion chamber has a lower zone. The inflow for at least one raw meal partial stream and one second tertiary partial airstream are arranged in the junction region of the upper zone and the lower zone. The height (H) of the upper zone in relation to the height (h) of the lower zone has a ratio of approximately 5:1 to approximately 1:1.