Patent ID: 8973283
Filing Date: 2015-03-10
Classification: B01D,F26B,Y10T

Abstract:
1. A method of fluidizing a batch of solvent-containing product in a fluidized bed vessel comprising the steps of: directing an influent stream containing an inert fluidizing gas through the vessel to fluidize the solvent-containing product and produce an effluent stream of inert fluidizing gas with solvent entrained therein; diverting a first portion of the solvent entrained effluent stream to a solvent recovery process; cooling the first portion of the solvent entrained effluent stream; removing the solvent from the first portion of the solvent entrained effluent stream to form a cleansed effluent stream; recycling a second portion of the solvent entrained effluent stream to the influent stream; directing the cleansed effluent stream to the influent stream; providing a make-up stream of inert fluidizing gas to the cleansed effluent stream or influent stream; operatively controlling the flow of the first portion of the solvent entrained effluent stream to reduce the flow of the solvent entrained effluent stream to the solvent recovery process as the batch fluidizing process progresses; and operatively controlling the flow of the make-up stream to the cleansed effluent stream or influent stream to increase the cooling capacity of the first portion of the solvent entrained effluent stream as the batch fluidizing process progresses.