Heating – Shaft type – Having combustion products generated in or fed to shaft
Patent
1988-09-09
1990-08-14
Yuen, Henry C.
Heating
Shaft type
Having combustion products generated in or fed to shaft
432 99, 432101, F28D 1500
Patent
active
049483641
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.
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Von D. Lewerenz article from Zement--Kalk--Gips magazine; Sep., 1987.
Advertisment for KOSIK; Aug. 1987 in Zement--Kalk--Gips magazine.
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