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:
Nov. 03, 1987
Filed:
Nov. 08, 1985
Applicant:
Inventors:
Johannes Janicka, Oberhausen, DE;
Wilhelm Jakobi, Essen, DE;
Heinz Durselen, Essen, DE;
Gunter Meyer, Essen, DE;
Assignee:
Krupp Koppers GmbH, Essen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10B / ; C10B / ; C10B / ; C10B / ;
U.S. Cl.
CPC ...
201 41 ; 202139 ; 202142 ;
Abstract
In regenerative coking ovens having vertical heating flues cooperating in pairs, high level and low level combustion stages and means arranged at the bottoms of respective heating flues to recirculate the flue gas, the following measures insure a substantially reduced generation of NO.sub.x contents in the flue gas: the recirculation current rate is between 20% and 50%, the combustion stage ratio is between 40% and 70% and the second combustion stage is arranged between 35% and 55% of the height of the heating flue.