Power plants – Combustion products used as motive fluid
Patent
1990-09-28
1991-05-21
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 39464, F02C 326
Patent
active
050164350
ABSTRACT:
In a PFBC power plant having a bed vessel containing a bed of fluidizable particulate material enclosed within a pressure vessel and surrounded by compressed combustion air, a gas turbine-compressor unit driven by combustion gases from the bed vessel, a first cut-off valve in a supply conduit for propellent gas to a turbine; a second cut-off valve in the conduit from a compressor to the bed vessel, a third cut-off valve in a by-pass conduit between the turbine and the compressor, and a blow-off valve in a conduit for dumping combustion gases from the bed vessel, a method of controlling such power plant in the event of an operational disturbance in the turbine unit comprises the steps of isolating the compressor-turbine unit from the bed vessel by closing the first cut-off valve in the supply conduit and the second cut-off valve in the conduit from the compressor to the bed vessel, short-circuiting the compressor-turbine unit by opening the valve in the bypass conduit, dumping the combustion gases by opening the blow-off valve, and injecting cooling water into the gases being dumped in the conduit for dumping gases between the bed vessel and the blow-off valve.
REFERENCES:
patent: 3203175 (1965-08-01), Michalicka et al.
patent: 4281510 (1981-08-01), Borjesgard et al.
patent: 4306411 (1981-12-01), Zoll
patent: 4315400 (1982-02-01), Cole et al.
patent: 4380147 (1983-04-01), Zaba
patent: 4498285 (1985-02-01), Kreij
patent: 4498286 (1985-02-01), Brannstrom
patent: 4744212 (1988-05-01), Andersson et al.
ABB Stal AB
Casaregola Louis J.
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