Combustion – Fuel disperser installed in furnace – Disperser feeds into permeable mass – e.g. – checkerwork – etc.
Patent
1979-04-06
1981-12-22
Ward, Jr., Robert S.
Combustion
Fuel disperser installed in furnace
Disperser feeds into permeable mass, e.g., checkerwork, etc.
431 7, 432 58, 110245, F23D 1900
Patent
active
043068545
ABSTRACT:
A fluid-bed furnace has at least one combustion chamber, preferably two side-by-side, housing a bed of incombustible particulate material to be fluidized when burning fuel fed thereto. Bed fluidization is by forced release in the incombustible material of combustion promoting gas, normally air, from a plenum chamber arrangement externally of the bed proper at a side or end thereof to save overall height. Other features include the return of used exhaust gas to the bed for additional fluidizing and heating purposes; release within the bed of such returned exhaust gas at a position higher than normal combustion promoting gas; an auxiliary burner within the combustion chamber to consume fine fuel material lifted from the bed in operation; insulation of at least the normal combustion promoting gas plenum chamber externally by incombustible bed material and/or internally by refractory lining; end tapering of bed traversing gas feed pipes to reduce expansion resistance; and a removable end plug in the latter pipes to ease cleaning thereof.
REFERENCES:
patent: 3769922 (1973-11-01), Furlong et al.
patent: 3881857 (1975-05-01), Hoy et al.
patent: 3921590 (1975-11-01), Mitchell et al.
patent: 3975148 (1976-08-01), Fukuda et al.
patent: 4021184 (1977-05-01), Priestly
patent: 4052140 (1977-10-01), Highley
Drucker William A.
G. P. Worsley and Company Limited
Ward, Jr. Robert S.
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