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. 06, 1988
Filed:
Nov. 03, 1987
Applicant:
Inventors:
Assignee:
Uhde GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210758 ; 210771 ; 210774 ;
Abstract
A process for the thermal treatment of carbon-containing substances, in particular of sludges which, after mechanical indirect pre-drying, are subjected to direct drying by means of drying gas is disclosed. Object of the invention is to simplify the elimination of the noxious matter contained in the sewage sludge, to allow for energy recovery, and to improve the efficiency of the entire process. The problem is solved by the fact that the drying gas used for direct sludge drying is recovered by partial oxidation of the sludge subjected to direct drying.