Furnaces – With fuel treatment means – Preliminary refuse treatment means
Patent
1975-10-09
1977-04-05
Sprague, Kenneth W.
Furnaces
With fuel treatment means
Preliminary refuse treatment means
110 8P, 110 10, 110 28F, 110119, 110 15, F23G 504
Patent
active
040155463
ABSTRACT:
The preferred embodiment of the invention disclosed herein includes apparatus for and the steps of separating glass, metal and other generally non-combustible material from refuse to provide a volume of generally combustible refuse, shreddingthe volume of combustible refuse into relatively small particles and mixing the particles with primary combustion air, which is used to convey the particles to a combustion chamber. Auxiliary burners are used to heat the combustion chamber to a predetermined temperature above which the particles are self-igniting and use of the burners is thereafter discontinued unless the temperature falls below the predetermined temperature. The particles are separated as they are injected into the combustion chamber with a cyclonic motion. In the combustion chamber the mixture is ignited and converted to combustion gases which flow through the chamber. The flow of secondary air is regulated to provide maximum combustion temperature for the particles and negative pressure is maintained in the chamber to control the flow rate of the gases and to assure that the gases are generally completely combusted. The combusted gases are exhausted to an associated device such as a steam boiler or other device using the heat energy and thereafter are exhausted to the atmosphere.
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Logan, Jr. John W.
Sprague Kenneth W.
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