Furnaces – Refuse incinerator – Refuse suspended in or supported by a fluid medium
Patent
1984-03-30
1985-03-26
Yuen, Henry C.
Furnaces
Refuse incinerator
Refuse suspended in or supported by a fluid medium
122 4D, 122 1A, F23G 500
Patent
active
045066086
ABSTRACT:
The invention comprising a drying and sorting apparatus for preparation of solid fuel and other solid materials having substantial surface moisture. Ambient air/gas is preheated by indirect heat exchange or other unfired means sufficiently to provide heat needed by the downstream process. The air/gas is then passed up vertically through a bed containing the solid materials, heating and fluidizing them along with the surface moisture. When in a fluidized state, the smaller/lower density particles rise to the top of the bed. At least a portion of the surface moisture on the particles is evaporated. The quantity and temperature of the air/gas flow is sufficient to retain the evaporated surface moisture in the vapor phase. Feedstock of solid materials is added to an intermediate location of the bed. The larger/more dense fluidized particles are removed from bottom location/s of the bed. The smaller/less dense fluidized particles are removed from top location/s of the bed. The temperature and vapor holding capacity of the air/gas leaving the bed is substantially higher than at ambient conditions. The air/gas is again heated by indirect or unfired means downstream of the bed for reducing relative humidity of the air/gas substantially below saturation prior to passage through a bag house for fine particle collection after which the air/gas along with the superheated water vapor is discharged to atmosphere. An optional mechanical solids separator can be installed between the bed and after bed heater.
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Electrodyne Research Corp.
Ruano William J.
Yuen Henry C.
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