Pressurized fluidized bed reactor and a method of operating the same

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870297

Isaksson, Juhani ^[1]

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1. Karhula, FI

A pressurized fluid bed reactor power plant includes a fluidized bed reactor contained within a pressure vessel with a pressurized gas volume between the reactor and the vessel. A first conduit supplies primary gas from the gas volume to the reactor, passing outside the pressure vessel and then returning through the pressure vessel to the reactor, and pressurized gas is supplied from a compressor through a second conduit to the gas volume. A third conduit, comprising a hot gas discharge, carries gases from the reactor, through a filter, and ultimately to a turbine. During normal operation of the plant, pressurized gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the reactor. In response to an operational disturbance of the plant, the flow of gas in the first, second, and third conduits is terminated, and thereafter the pressure in the gas volume and in the reactor is substantially simultaneously reduced by opening pressure relief valves in the first and third conduits, and optionally by passing air directly from the second conduit to the turbine.

• Research Organization: City of Lakeland
• DOE Contract Number: FC21-91MC27364
• Assignee: Foster Wheeler Energia Oy (FI)
• Patent Number(s): US 5491967
• OSTI ID: 870297
• Country of Publication: United States
• Language: English

Related Subjects

pressurized
fluidized
bed
reactor
method
operating
fluid
power
plant
contained
pressure
vessel
gas
volume
conduit
supplies
primary
passing
outside
returning
supplied
compressor
third
comprising
hot
discharge
carries
gases
filter
ultimately
turbine
normal
operation
withdrawn
introduced
substantially
continuously
controlled
rate
response
operational
disturbance
flow
conduits
terminated
thereafter
simultaneously
reduced
relief
valves
optionally
air
directly
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relief valve
gas volume
controlled rate
fluid bed
pressurized fluidized
substantially simultaneously
bed reactor
normal operation
pressure vessel
fluidized bed
power plant
hot gas
pressurized fluid
pressurized gas
pressure relief
gas discharge
substantially continuous
reactor power
substantially continuously
simultaneously reduced
continuously controlled
reactor contained
simultaneously reduce
supplies primary
substantially simultaneous
conduit supplies
/60/