| 摘要 |
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. |
