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US 4,790,986 AGranted
Method and apparatus to produce a hot fluidizing gas
AssigneeStemcor Corporation
InventorsJonathan J. Kim, Viswanathan Venkateswaran, Randolph Kujawa
Life of this patent
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Abstract
A fluid bed reactor for treatment of refractory materials with a hot fluidizing gas and a method to use same. Both the refractory materials and the fluidizing gas are introduced from the top of the reactor. Unusually high reaction temperatures of up to 2000.degree. C. are maintained in the reaction chamber due to the presence of heating elements within the reactor and due to countercurrent heat transfer.
Claims3
A process for the continuous preheating of hot fluidizing gas for the treatment of refractory materials comprising:
- providing a reaction zone;
- heating the reaction zone by heating means;
- allowing a particulate solid to pass into the reaction zone from the top of the reaction zone;
- passing fluidizing gas within a conduit through the entire length of the reaction zone in a direction the same as the direction in which the particulate solid is passing into the reaction zone;
- and
- causing the gas to ascend from below the reaction zone in a direction counter to the direction in which the particulate solid is passing and counter to the direction in which the incoming fluidizing gas is travelling to fluidize the particulate solid and to preheat up to a temperature of 2000.degree. C. the fluidizing gas passing within said conduit through the entire length of the reaction zone in a direction the same as the direction in which particulate solid is passing to the reaction zone.
3 more elements
Dependencies are inferred from the claim text.