Fluidized bed with uniform heat distribution and multiple port n

Details Fluidized bed with uniform heat distribution and multiple port n Fluidized bed with uniform heat distribution and multiple port n

1996-07-19

1999-04-06

Bueker, Richard

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

427249, C23C 1600

Patent

active

058915176

ABSTRACT:
A fluidized bed apparatus which produces a pyrolitic carbon coating with improved wear and porosity characteristics of the coating by producing a more uniform flat temperature profile throughout a reaction chamber in the area where coating is taking place. The apparatus has heating coils surrounding a lower end of the reaction chamber placed immediately adjacent one another at tight spacing. This contrasts to previous apparatus wherein heating coils were spaced between 2 cm and 5 cm apart. The apparatus also has a multi-jet nozzle to control a flow of gases through the reaction chamber. The jets in the nozzle comprise passages which are oriented such that the length of the passages lie on a series of cones having common axes.

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