Solid refuse furnace
A description is given of a plural-chamber fire box comprising: first refractory means having surfaces defining an upper chamber in which solid fuel may be stored, dried, gasified and partially combusted, at least a portion of said upper chamber converging in a funnel-like fashion to an opening at the bottom of said upper chamber; second refractory means having surfaces defining a lower chamber which communicates with the upper chamber through said opening, additional refractory means forming a structure which surrounds and contains a lower portion of the upper chamber and said opening; means for introducing primary combustion air into the converging region of the upper chamber such that, in the presence of heat, various degrees of partial combustion may take place in said upper chamber; means for introducing secondary combustion air at the periphery of the opening so that complete combustion of gases may take place in said opening and the lower chamber; means located in the lower chamber below said opening for supporting (A) hot char at the bottom of the upper chamber so that the hot char serves as a gas igniter and (B) regulating the velocity and volume of total flow of air and combustion products through the firebox; means comprising at least part of said additional refractory means defining a passageway for exiting unreacted air and hot gaseous combustion products from the lower chamber so that the heat of said unreacted air and gaseous combustion products assists in maintaining the temperature above that required for complete combustion of smoke, creosote, and other noxious emissions; and insulation disposed about said first, second and additional refractory means for thermally insolating the outside surfaces of the upper and lower chambers from surrounding structures in a manner which does not restrict thermal communication between said upper and lower chambers.
- Assignee:
- Energy Alternatives Inc
- Patent Number(s):
- US 4213404
- OSTI ID:
- 5010918
- Country of Publication:
- United States
- Language:
- English
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