Gas and particle separation means for a stem generator circulating fluidized bed firing system
The invention comprises a steam generator having a circulating fluidized bed firing system. Particles of fuel and solid inert material are recirculated in a furnace wherein gas velocities are maintained at levels sufficient to entrain the fuel and inert material particles in the gas stream. A plenum is provided at the furnace outlet wherein gas velocity drops below entrainment level and the particles are directed to a collection hopper for recycle. The gas is withdrawn from the plenum through ducting in a manner to assure uniform gas distribution through the plenum. High gas velocity through the ducting improves heat transfer in the fluid cooled enclosure surface where such surface is incorporated into the ducting. The ducting connect to the downstream gas path.
- Assignee:
- Electrodyne Research Corporation
- Patent Number(s):
- US 4442797
- OSTI ID:
- 6452426
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
421000* -- Engineering-- Combustion Systems
BOILERS
COMBUSTORS
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW RATE
FLUID FLOW
FLUIDIZED-BED COMBUSTORS
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT TRANSFER FLUIDS
PARTICLES
PARTICULATES
POLLUTION CONTROL EQUIPMENT
SEPARATION PROCESSES
STEAM GENERATORS
VAPOR GENERATORS
WASTES