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US 4,295,281 AGranted
Drying solid materials
AssigneeMonash University
InventorOwen E. Potter
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AssigneeMonash University
InventorOwen E. Potter
Estimating the term…
The invention relates to a method of drying a solid material containing less than 95% by weight of a vaporizable material which comprises establishing a fluidized bed containing the solid material, introducing fluidizing medium, heating the fluidized bed indirectly, feeding the solid material to be dried to the fluidized bed and removing dried solid material therefrom, and removing vapor product from the fluidized bed. In accordance with the present invention the fluidizing medium is the vaporizable material in vapor form and vapor product comprising the vaporizable material substantially uncontaminated by other gases is removed from the fluidized bed for further use. By producing a vapor product substantially uncontaminated by other gases, the invention enables economic recovery of the vaporizable material per se, as well as the latent heat thereof, which is of particular value when the vapor product is steam.
A method of drying a solid material in lump form containing less than 95% by weight of a vapourisable material which comprises establishing a fluidized bed of a particulate material having a density lying between 1.25 and 2.75 times that of the solid material, introducing fluidizing medium, the fluidizing medium being the varpourisable material in vapour form, feeding the solid material in lump form to be dried to the fluidized bed, heating the fluidized bed indirectly so as to remove vapourisable material from the solid material, removing dried solid material from the bottom of the fluidized bed, and removing a vapour product comprising the vapourisable material substantially uncontaminated by other gases from the fluidized bed for further use.
In a method of drying a solid material containing less than 95% by weight of a vapourisable material which comprises establishing a fluidized bed containing the solid material, introducing fluidizing medium, heating the fluidized bed indirectly, feeding the material to be dried to the fluidized bed, removing dried solid material therefrom, and removing vapour product from the fluidized bed;
Dependencies are inferred from the claim text.