Two fluidized bed type boiler

Details Two fluidized bed type boiler Two fluidized bed type boiler

1988-03-21

1989-03-28

Favors, Edward G.

Liquid heaters and vaporizers

Miscellaneous

110245, 16510416, F22B 100

Patent

active

048154180

ABSTRACT:
A two fluidized bed type boiler comprises: an upstream combustion zone forming a fluidized bed of sand in which pulverized coal is burnt with air fed as a fluidizing gas; a downstream desulfurizing zone forming a fluidized bed of particulate limestone with flue gases stemming from the combustion zone as fluidizing gases; and an intermediate dust collecting zone, in which a baffle plate facing the combustion zone and extending downwards is provided, is arranged between the upstream and downstream zones to form a single and unitary passage for a flow of the flue gases over the three zones.

REFERENCES:
patent: 4499857 (1985-02-01), Wormser
patent: 4614167 (1986-09-01), Bergkvist
patent: 4681065 (1987-07-01), Bergkvist

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