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US 6,105,517 AGranted
Fly ash treatment
AssigneeThe University of Sheffield
InventorJoshua Swithenbank
Life of this patent
Estimating the term…
Abstract
A process for treating toxic fly ash from an incinerator which comprises heating the fly ash held in suspension in a combustible or combusted gas at least to a temperature at which sintering of the fly ash takes place.
Claims15
A process for treating toxic particulate ash from an incinerator which comprises:
- providing a flow of combustible gas,
- burning the gas,
- suspending the particulate ash in the moving gas to heat the ash while in suspension to a temperature at which sintering of the fly ash takes place,
- separating the ash while still at sintering temperature, and
- transforming the ash to produce a frit or to produce sintered pellets of ash;
- wherein the gas is heated in a regeneration burner system.
3 more elements
An apparatus for treating toxic particulate ash from incinerators, which comprises:
- means for producing a flow of a combustible gas,
- means for igniting the gas so that it burns,
- means for introducing the ash into the gas so that it is suspended in the flow of gas and heated by the gas so that the temperature of the fly ash is raised to at least a temperature at which sintering of the fly ash takes place,
- means for separating hot ash from the gas,
- means for transforming the ash into frit or means for transforming the ash into pellets of sintered ash, and
- a regeneration burner system.
3 more elements
Dependencies are inferred from the claim text.