F - Mech Eng,Light,Heat,Weapons – 28 – D
Patent
F - Mech Eng,Light,Heat,Weapons
28
D
257/2, 110/2.1
F28D 13/00 (2006.01) B01J 8/42 (2006.01) F26B 3/097 (2006.01)
Patent
CA 1063435
ABSTRACT OF THE DISCLOSURE That is to say, in a process that involves use of a fluidized bed of solid particulate material wherein. fluidization is obtained by passage of a gas through the bed, and the bed is stabilized by including discrete magnetizable particles in the bed and applying a substantially uniform magnetic field to the bed, temperature gradients that occur in the bed when the process in which the fluidized bed is used involves release or absorption of heat are reduced by periodically removing the magnetic field in a cyclical fashion. The period of magnetic field removal is long enough to destabilize the fluidized bed with respect to the positioning of fluidized particles so that the particles will move about in the bed, but the period of removal is not so long as to permit the un- stabilized bed to exhibit a boiling or bubbling effect. The ratio of "on" time to "off" time is generally within the range of from about 4 to 1 to about 4000 to 1.
283742
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