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:
Aug. 14, 1990
Filed:
Sep. 09, 1988
Jeffery L Thompson, Birmingham, AL (US);
Other;
Abstract
An annular, vertical shaft kiln comprising a cascading process path with varying cross sectional area, in which the coarse charge particulants tend to follow the longer path near the walls as does the gas being injected into the mid-region of the kiln, while the fine particulants tend to take the straighter, shorter path near the middle, thus resulting in an even calcination of varying diameters of charge particulants. The briquetted fuel which may be made of hazardous waste, is heated slowly to safely destroy such wastes in the processing. Because of the limited range of the ratio of the smallest to the largest diameter of the charge particulants, the charge particulants are sorted through wire mesh screens into bins according to diameter. The kiln's computer then receives data on the process at various points along the path and controls the process by regulating the charge particulants injection, the rate of the fuel injection and/or the speed of the air injection.