Furnaces – With control means responsive to a sensed condition – Feed control
Patent
1979-12-21
1982-03-30
Favors, Edward G.
Furnaces
With control means responsive to a sensed condition
Feed control
110108, 110165R, 110255, 110256, 406 70, F23N 518
Patent
active
043218776
ABSTRACT:
A continuous gasification furnace and method of operation. The charge is fed into the furnace chamber between two rolls at least one of which is driven. The furnace chamber can be sealed from the ambient atmosphere. The bed of the furnace contains three zones from top to bottom, these zones are; a volatilization zone, a char reaction zone and an ash zone. Additionally, there can be a drying zone above the volatilization zone. Fuel, air, and steam enter the lower portion of the furnace through strategically located inlet ports. Fuel is used to start up the burning bed while carefully controlled steam to air ratio is used during continuous operation of the furnace. Simultaneously controlled steam cooling effects and exothermic reactions occur in the char reaction zone whereby all or controlled amounts of the oxygen is consumed so that pyrolysis can occur in the volatilization zone without the danger of combustion in that zone or combustion of the fumes leaving the bed. The ash is discharged into an ash hopper designed so that the ash within the hopper supports the charge bed.
REFERENCES:
patent: 1979176 (1934-10-01), Schicht
patent: 2151574 (1939-03-01), Ward
patent: 2175610 (1939-10-01), Linder
patent: 2923260 (1960-02-01), Rummel
patent: 3402684 (1968-09-01), Gradischer et al.
patent: 3847296 (1974-11-01), Stockman
patent: 3865053 (1975-02-01), Kolze et al.
Eckstrom Peter M.
Schmidt H. Dean
Favors Edward G.
Midland-Ross Corporation
Negin Richard A.
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