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:
Mar. 02, 1976
Filed:
Nov. 01, 1974
Erhard Albrecht, Essen, DT;
Rheinstahl AG, , DT;
Abstract
A fluidized bed furnace, particularly for burning partly dehydrated sludge, comprises a furnace housing which has a bottom for supporting a fluidized bed and it includes a plurality of nozzles directed to discharge upwardly through the bottom wall into the bed for supplying heating gases including combustion air. The furnace has side walls which extend upwardly from the bottom above the bed and define a combustion chamber above the bed. The combustion chamber is closed at its top by a substantially horizontal furnace roof. At least one sludge charging opening is provided in the furnace roof for charging the sludge downwardly into the combustion chamber. A post combustion chamber is connected downwardly through the roof to the combustion chamber and it is made of a cross-section which is substantially smaller than the combustion chamber. Means are provided for supplying secondary combustion air to the post combustion chamber. Burners are provided for part-time operation which discharge obliquely downwardly into the combustion chamber from the upper portion of the side walls or the furnace roof.