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:
Sep. 16, 1997
Filed:
Sep. 05, 1996
Applicant:
Inventors:
Jochen Ziegler, Schelklingen, DE;
Helmut S Erhard, Wiesloch, DE;
Assignee:
Heidelberger Zement Aktiengesellschaft, Heidelberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
106761 ; 106762 ; 42324401 ; 42324407 ;
Abstract
The present invention relates to a method for dry desulfurizing flue gases from rotary cement kilns, for which additives suitable for binding SO.sub.2, such as quick lime and/or dry calcium hydroxide, are supplied to the kiln, the additive being introduced into a flue gas-carrying zone at the kiln head at a injection angle of 2.degree. to 12.degree. to the axis of the kiln and at an injection velocity of 20 to 80 m/sec.