Furnaces – Fuel feeders – Blower
Patent
1984-03-12
1985-07-30
Yuen, Henry C.
Furnaces
Fuel feeders
Blower
431183, 241 58, 241275, 110261, 110264, 110265, F23D 1700
Patent
active
045314616
ABSTRACT:
A system for pulverizing and burning solid fuel, such as coal or other fossil fuel, characterized by a possible turndown ratio of up to at least fifteen to one, includes a unique pulverizer capable of both impact and autogenous pulverizing of the fuel so that about 80% will be no more than 40 microns in size, and a unique burner which includes a valved firing nozzle having a firing conduit with firing orifice and internal turbulating means for a mixture of primary air and pulverized solid fuel, and a controlled secondary air supply. A movable valve element, preferably in the form of a double-taper-ended diffuser positioned downstream from the firing orifice, controls outflow of a turbulent stream of the mixed primary air and fuel from the firing orifice into an ignition chamber and controls flame shape.
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Raymond Vertical Mill, pp. 8-38, 8-43, 8-44 from Perry's "Chemical Engineer's Handbook", Bulletin No, 118, Combustion Engineering, Inc.
Sayler William H.
White Justin C.
T.A.S., Inc.
Yuen Henry C.
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