Liquid heaters and vaporizers – Miscellaneous
Patent
1988-03-22
1989-10-10
Favors, Edward G.
Liquid heaters and vaporizers
Miscellaneous
110245, 110342, 110345, F22B 100
Patent
active
048724238
ABSTRACT:
A method for improving utilization of sulphur-absorbent when burning fuel in a fluidized bed of particulate material includes withdrawing partially consumed bed material from the ash chamber of the bed vessel and returning to the combustion chamber of the bed by means of pneumatic transportion using steam as propellant. The steam constitutes a reactant which effects disintegration of the bed-material particles. A power plant burning a fuel in a fluidized bed of particulate material comprises a bed vessel having an air distributor with nozzles for supplying air to a combustion chamber to effect fluidization of the bed and combustion of a fuel. An ash chamber is provided below the air distributor for removal of ash and bed material, and transport means for withdrawing partially consumed bed material from the ash chamber, treating this bed material with steam and returning the steam-treated bed material to the combustion chamber.
REFERENCES:
patent: 4185080 (1980-01-01), Rechmeier
patent: 4312280 (1982-01-01), Shearer et al.
patent: 4421036 (1983-12-01), Brannstrom et al.
patent: 4640205 (1987-02-01), Branstrom
patent: 4730563 (1988-03-01), Thornblad
patent: 4753180 (1988-06-01), Narisoko et al.
ABB Stal AB
Favors Edward G.
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