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:
Jul. 15, 1980
Filed:
Feb. 06, 1978
Applicant:
Inventor:
Herbert Deussner, Gladbach, DE;
Assignee:
Klockner-Humboldt-Deutz AG, , DE;
Primary Examiner:
Int. Cl.
CPC ...
C01F / ;
U.S. Cl.
CPC ...
423175 ; 422193 ; 422194 ; 422198 ; 423637 ; 432 14 ; 432 29 ; 432102 ;
Abstract
This invention relates to a countercurrent combustion method and apparatus for the production of calcined lime in a furnace which contains, in sequence, at least one preheating zone, combustion zone, and a cooling zone. The entire combustion air is passed through the cooling zone thereby to preheat the same. A portion of the thus preheated air is withdrawn from the furnace and heated in a recuperation zone which may be within or outside the vertical shaft furnace but is located between the preheating zone and the combustion zone. In the recuperation zone, the air is heated to approximately the deacidification temperature and then is supplied to the combustion zone.