Process for operating a fluidized bed

Details Process for operating a fluidized bed Process for operating a fluidized bed

F - Mech Eng,Light,Heat,Weapons

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F25B 39/02 (2006.01) B01J 8/18 (2006.01) F17C 9/02 (2006.01) F25D 3/10 (2006.01) F25D 25/00 (2006.01)

Patent

CA 1160069

13093 PROCESS FOR OPERATING A FLUIDIZED BED ABSTRACT OF THE DISCLOSURE In a process for operating a fluidized bed, wherein the bed particles have a Reynolds number of less than 20, at a predetermined cryogenic temperature comprising (i) ringing a cryogenic fluid into indirect contact with the bed; (ii) permitting the fluid to vaporize at the area of indirect contact whereby the bed is cooled; and (iii) utilizing the vapor from step (ii) to fluidize, and further cool, the bed, said cooling in steps (ii) or (iii) being from ambient temperature to the predetermined cryogenic temperature, the improvement comprising changing, continuously or stepwise, the minimum fluidizing mass flow of vapor as the temperature of the bed changes in accordance with a specified equation. S P E C I F I C A T I O N

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