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US 4,948,365 AGranted
High-temperature, gas-burning furnace
AssigneeZond Systems, Inc.
InventorWalter W. Yuen
Life of this patent
Estimating the term…
Abstract
A novel high-temperature, gas-burning furnace has a rotating porous-ceramic bed, which serves the integral functions of wall insulator, thermal regenerator, combustion chamber, and radiant heater. The configuration permits high chamber temperatures (up to 1400.degree. C.), large temperature gradients across the bed (typically, 600.degree. C. across 2.5 cm), and low stack losses (exhaust stream on the order of 250.degree. C.).
Claims12
Furnace apparatus comprising, in combination:
- (a) a rotor, and means to rotate the rotor, the rotor having opposite ends,
- (b) a substantially cylindrical, porous ceramic bed carried by the rotor, the bed having an axis of rotation, the bed surrounding and defining an interior combustion zone, and thermal insulation means substantially closing said opposite ends of the rotor, said ends axially spaced apart,
- (c) a housing into which the rotor and bed are received, and having an inlet for air to pass sidewardly through the rotating bed via one side thereof to be preheated and then to pass into said interior zone,
- (d) fuel inlet means for supplying fuel to said combustion zone to mix with air therein for combustion in said zone,
- (e) and the housing having an outlet to discharge hot combustion products which have passed sidewardly through said porous bed via another side thereof to pre-heat same for subsequent rotation into the path of the air to pass therethrough,
- (f) the bed thickness predetermined to provide regeneration, at over 1,000.degree. C.
3 more elements
Dependencies are inferred from the claim text.