Fluidized bed furnace
AssigneeFata European Group S.p.A.
InventorGaetano Di Rosa
Life of this patent
Estimating the term…
Abstract
In a calcining furnace usable particularly for regenerating sands used in casting boxes and cores, a bed of refractory particles is fluidized by means of a combustible gas which is fed into the bed together with air, so as to enable the combustible gas to burn. The base wall on which the bed of refractory particles is supported has a plurality of holes for the air supply. Each hole for the air supply has associated therewith a nozzle for supplying the combustible gas, disposed coaxially with the respective hole and having at least one discharge aperture for the combustible gas disposed adjacent the plane of the base plate.
Claims11
A fluidized bed furnace comprising:
- a support for a bed of refractory particles;
- a plurality of air supply means disposed in said support for supplying air to said bed;
- combustible gas supply means disposed within said air supply means and including a gas discharge means for supplying combustible gas to said bed, said discharge means positioned above said support;
- an air chamber located immediately below said support and being in communication with said air supply means, said air chamber including at least one air inlet means for introducing air into said air chamber for distribution to said air supply means;
- and
- partition means positioned within said air chamber for causing air to flow across substantially the entire undersurface of said support.
A fluidized bed furnace comprising:
- a support for a bed of refractory particles;
- an air chamber located immediately below said support and including at least one air inlet means for introducing air into said air chamber;
- a plurality of air supply conduit means in said support being in communication with said air chamber and including an air discharge means positioned above said support for supplying air to said bed;
- combustible gas supply means disposed within said air supply conduit means and including a gas discharge means positioned above said support for supplying combustible gas to said bed;
- and
- partition means positioned within said air chamber for causing air to flow across substantially the entire undersurface of said support.
Dependencies are inferred from the claim text.