Gas and particle separation means for a steam generator circulat

Details Gas and particle separation means for a steam generator circulat Gas and particle separation means for a steam generator circulat

1983-01-24

1984-04-17

Favors, Edward G.

Liquid heaters and vaporizers

Miscellaneous

110245, 110263, 431170, F22B 100

Patent

active

044427972

ABSTRACT:
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 The gas is withdrawn from the plenum through ducting in a manner to assure uniform gas distribution through the plenum.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.

REFERENCES:
patent: 4165717 (1979-08-01), Reh et al.
patent: 4184455 (1980-01-01), Talmud et al.
patent: 4250839 (1981-02-01), Daman
patent: 4301771 (1981-11-01), Jukkola et al.

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