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:
Oct. 08, 2002
Filed:
Aug. 15, 2001
Carsten Eckert, Cologne, DE;
Andreas Hand, Cologne, DE;
Norbert Streit, Siegburg, DE;
Stephan Kuhnke, Erftstadt, DE;
KHD Humboldt Wedag AG, Cologne, DE;
Abstract
A system for the manufacture of cement clinker from cement raw meal in which the off-gases of the cement clinker production line not only undergo denitrification but also undergo desulfurization, so that even sulfur-rich raw materials and fuels can be employed without exceeding the prevailing pollutant emission limits. A substream of the oversize material ( ) discharged from the mixing chamber ( ) of the precalcination stage ( ) as solid sorbent may be combined with the off-gas ( ) and/or with a partial gas discharge ( ) of the rotary kiln off-gas in order to convert the sulfur oxides contained in those off-gases to calcium sulfate ( ), which is subsequently separated from the system off-gas.