The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2012
Filed:
Nov. 29, 2006
Heiko Schürmann, Köln, DE;
Carsten Eckert, Overath, DE;
Heiko Schürmann, Köln, DE;
Carsten Eckert, Overath, DE;
KHD Humboldt Wedag GmbH, Cologne, DE;
Abstract
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 NOcontents 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.