Water cooled rolling grate incinerator
AssigneeWestinghouse Electric Corp.
InventorBozorg Ettehadieh
Life of this patent
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Abstract
A roller grate incinerator cooperatively associated with a waste heat boiler, wherein a plurality of cylindrical shaped water cooled roller grates are disposed on an incline to form a undulating water cooled surface upon which a bed waste is laid and burned as the roller grates turn moving the burning waste along the undulating surface, which has a plurality of perforations through which combustion air is supplied to the underside of the bed to facilitate burning of the waste and the flow of hot gases through the waste heat boiler.
Claims10
A water cooled roller grate incinerator cooperatively associated with a boiler comprising a plurality of cylindrical shaped roller grates, each having a plurality of circular arrays of spaced apart cooling tubes separated by perforated webs and connected at each end to a ring header;
- a rotary joint associated with each cylindrical roller grate for supplying cooling fluid to the circular array of tubes to keep them cool and returning heated fluid to the boiler;
- each roller grate being disposed to rotate about a centrally disposed axis;
- the axes of the roller grates being disposed in an inclined plane generally parallel to each other so as to form an undulating surface;
- a waster hopper with a waste feed ram disposed on the lower end of the hopper for feeding waste to the undulating surface;
- a combustion air system for supplying combustion air through the perforated webs to the waste pushed on the undulating surface by the waste feed ram to burn the waste;
- a separate drive system for each grate, the drive system regulating the rate at which the burning waste progresses across the undulating surface portion of each grate as the grates rotate transferring the waste from one roller grate to the next lower roller grate as the waste burns.
Dependencies are inferred from the claim text.