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. 08, 1994
Filed:
Jul. 13, 1992
Claus Bauer, Cologne, DE;
Klockner-Humboldt-Deutz Aktiengesellschaft, Cologne, DE;
Abstract
In cement clinker production lines having calcinator connected upstream of the rotary kiln and equipped with a second firing, in order that the most complete possible burnup or residual burnup, favorable from the standpoint of thermal economy, of uncombusted fuel constituents such as, for example, CO and/or uncombusted residual carbon be enabled in the calcinator, and indeed in the case of calcinators without, but in particular with, a device for the reduction of the NO.sub.x component present in the furnace off-gas (rotary kiln off-gas and calcinator off-gas), a low-pressure-drop swirl chamber (33) is arranged in the calcination stage (17) in the region of its flow diversion, which swirl chamber has an opening (32) in its upper region for the tangential inlet of gas-solids suspension and a central opening (34) on its bottom for the discharge of the swirled gas-solids suspension, and in its interior a solids-free or solids-poor, temperature-controlled core zone (36) of elevated temperature can be maintained for the implementation of certain reactions.