Power plants – Combustion products used as motive fluid – Using special fuel or oxidizer
Patent
1987-06-23
1989-02-21
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Using special fuel or oxidizer
110266, F02C 326
Patent
active
048054054
ABSTRACT:
A power plant with combustion of a fuel in fluidized bed (21) of particulate material, usually contains a sulphur absorbent. A bottom (14) divides a bed vessel (12) into an upper combustion chamber (15) and a lower conical or pyramid-shaped ash discharge chamber (16) for discharging ashes and consumed bed material. The bottom (14) is formed with openings (22) through which material is able to pass. Cooling air is supplied to the lower part of the lower chamber (16). This chamber (16) is provided with grates (37, 38) with horizontal channels (46) for spreading cooling air from the central part of the chamber (16) to its outer parts. These grates (37, 38) may be formed of U-sections with their openings facing downwards. The channels (46) of a grate (37) may be connected to the combustion chamber (15) by vertical tubes (50).
REFERENCES:
patent: 2812592 (1957-11-01), Knibbs et al.
patent: 4287838 (1981-09-01), Moynihan
patent: 4297321 (1981-10-01), Beranek
patent: 4382415 (1983-05-01), Korenberg
patent: 4474119 (1984-10-01), Jones
patent: 4584949 (1986-04-01), Branstrom
patent: 4655147 (1987-04-01), Branstrom et al.
Asea Stal AB
Casaregola Louis J.
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