Combustion furnace or reactor with multi-stage fluidized bed sys

Details Combustion furnace or reactor with multi-stage fluidized bed sys Combustion furnace or reactor with multi-stage fluidized bed sys

1979-11-13

1982-03-23

Richman, Barry

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

48210, 422143, 422145, 431 7, 431170, B01J 828

Patent

active

043212336

ABSTRACT:
A combustion furnace or reactor with a multi-stage fluidized bed system wherein upper and lower fluidized bed formation zones in which the fluidized beds of bed particles containing particles of lime stone are separated through a partition device. The partition device is provided with a plurality of exhaust gas distribution holes for distributing the exhaust gases produced in the lower fluidized bed into the upper fluidized bed and a plurality of nozzles through which issue the combustion air and/or recirculated exhaust gases into the upper fluidized bed. Combustion products such as NO.sub.x and SO.sub.x are desulfurized and denitrified respectively within the reactor by calcium compounds which absorb SO.sub.2 and act as catalysts for reducing NO.sub.x.

REFERENCES:
patent: 2529366 (1950-11-01), Bauer
patent: 3565593 (1971-02-01), Moore
patent: 3905336 (1975-09-01), Gamble et al.
patent: 4135885 (1979-01-01), Wormser et al.

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