Treatment of waste material containing alkali metals in a contro

Details Treatment of waste material containing alkali metals in a contro Treatment of waste material containing alkali metals in a contro

1976-07-19

1977-09-06

Sprague, Kenneth W.

Furnaces

With fuel treatment means

Preliminary refuse treatment means

202117, 432139, 110 15, F23G 504

Patent

active

040460860

ABSTRACT:
The invention is directed to method and apparatus for treating waste material containing alkali metal in a counter-flow furnace wherein the waste material to be processed is introduced at one end thereof and the processed material is discharged from the other end, while simultaneously air is introduced and the gases of combustion are caused to flow in a counter-current direction with respect to the material being processed and are exhausted at the first end of the furnace, and wherein the furnace has a natural tendency to form zones of processing including sequentially from the first end of the furnace, a drying zone, a charring and volatile burning zone, and a fixed carbon burning zone, and wherein a maximum temperature is maintained in the furnace below about 1400.degree. F. directly adjacent the surface of the bed of material being processed.

REFERENCES:
patent: 2144507 (1939-01-01), Raigch
patent: 3047362 (1962-07-01), Smith
patent: 3958920 (1976-05-01), Anderson
patent: 3968756 (1976-07-01), Yamada

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