Drying apparatus and method for pumpable materials

Details Drying apparatus and method for pumpable materials Drying apparatus and method for pumpable materials

1995-03-15

1996-09-17

Bennett, Henry A.

Heating

Work chamber having heating means

Combustion products heat work by contact

432 95, 432 99, 34372, 34594, F27D 108

Patent

active

055562744

ABSTRACT:
A particulate material drying apparatus and method including a pulse combustor and an associated combustion chamber. Fuel and combustion air are introduced to the combustion chamber whereby the combination of the pulse combustor and combustion chamber generates a pulsating flow of hot gases. A material feed introduction chamber receives the hot gases and material to be dried is delivered into the introduction chamber for contact therein with the flow of hot gases. A drying chamber is connected to the introduction chamber for receiving the mixture of material and hot gases exiting from the introduction chamber. The drying chamber comprises an enclosing wall, a porous inner wall spaced inwardly from the enclosing wall, and an annular space defined between the enclosing wall and the porous inner wall. Fluid under pressure is introduced to the annular space whereby the fluid passes through the porous inner wall and deters build-up of material on the inner surface of the porous inner wall.

REFERENCES:
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patent: 4708159 (1987-11-01), Lockwood, Jr.
patent: 4992043 (1991-02-01), Lockwood, Jr.
patent: 5252061 (1993-10-01), Ozer

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