Process for continuous heating and cleaning of wire and strip products in a stratified fluidized bed
AssigneePraxair Technology, Inc.
InventorJaak Stefaan Van den Sype
Life of this patent
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Abstract
This invention is directed to a method for annealing strand wires or strips in a fluidized bed reactor having an atmosphere of fluidized gases flowing through fluidized particles. The method provides for stratifying the atmosphere of fluidized gases by passing a reducing gas through the fluidized particles in the fluidized bed. The wires are passed between the fluidized particles at a location near the bottom of the fluidized bed. Finally, an amount of oxygen-containing gas is injected on top of said fluidized bed reactor.
Claims19
A method for annealing strand wires in a fluidized bed reactor having an atmosphere of fluidizing gases containing a high hydrogen content said fluidizing gases flowing through fluidized particles comprising:
- a. stratifying the atmosphere of fluidized gases by passing a reducing gas through the fluidized particles in the fluidized bed;
- b. passing the wires between the fluidized particles at a location near the bottom of the fluidized bed thereby causing the fluidized particles to circulate around said wires;
- and
- c. injecting an amount of oxygen-containing gas on top of said fluidized bed reactor.
A method for annealing wire, sheet or strip in a fluidized bed reactor having an atmosphere of fluidizing gases containing a high hydrogen gas content said fluidizing gases flowing through fluidizing particles comprising:
- a. passing an effective amount of reducing gas, through the fluidizing particles to separate an elutriated fraction of the fluidizing particles out of said fluidized bed;
- b. passing a portion of a wire, sheet or strip vertically through said fluidized bed thereby causing the elutriated fraction of the fluidized particles to circulate around said portion of wire, sheet or strip;
- C. injecting an amount of oxygen-containing gas through the top of said fluidized bed reactor;
- and
- d. separating said elutriated fraction of fluidizing particles from the reducing gases and returning the elutriated fraction of fluidizing particles back to the bottom of the bed.
Dependencies are inferred from the claim text.