Furnaces – Fuel feeders – Blower
Patent
1977-07-15
1979-05-22
Yuen, Henry C.
Furnaces
Fuel feeders
Blower
209467, 209474, 241 19, 241 791, 110347, 110220, 110222, F23G 502
Patent
active
041553136
ABSTRACT:
Solid particles comprising combustible matter (e.g. coal) associated with or contaminated by inert matter (e.g. ash, rock) is segregated in a segregation zone into low density/small size and high density/large size fractions. The low density/small size fractions are passed to a utilization zone for conversion of the combustible matter. The high density/large size fractions are size reduced (e.g. by grinding) and either returned to the segregation zone, or passed at least in part, directly to the utilization zone. The conversion of the combustion matter proceeds more efficiently as a result. The segregation zone may operate by fluidized size/density segregation and in the utilization zone, the combustible matter may be at least partially combusted, preferably in a fluidized bed.
REFERENCES:
patent: 1948800 (1934-02-01), Revelart
patent: 2200472 (1940-05-01), Erdmann
patent: 2310894 (1943-02-01), Brusset
patent: 3078048 (1963-02-01), Russell et al.
patent: 3349912 (1967-10-01), Eveson et al.
patent: 3446355 (1969-05-01), Boucraut et al.
patent: 3513858 (1970-05-01), Pietrucci
patent: 3595385 (1971-07-01), Duff
patent: 3951081 (1976-04-01), Martin et al.
The United States of America as represented by the Administrator
Yuen Henry C.
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