Fluidized bed heat exchanger

Heat exchange – Intermediate fluent heat exchange material receiving and... – Solid fluent heat exchange material

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Details

122 4D, 122 6A, 110245, 16510418, F28D 1300, F28D 1902

Patent

active

047563605

ABSTRACT:
A heat exchanger for use in a multi-solid fluidized bed heat generating system includes a housing for containing a flowing volume of hot gas and fluidized recirculating solid particulate material. The housing includes outer side walls, a top wall and an intermediate bottom structure comprising water wall panels for containing a flow of water/steam to be heated from the hot gas and solid material contained within the enclosure formed by the housing walls. A supply header is provided to direct water/steam to be heated into the water wall panels at a lower level and a takeoff header is utilized for removing the heated water/steam from the wall panels at an upper level. A fluidizing gas injector system is provided for directing a high velocity flow of gaseous fluid into the enclosure formed by the housing water wall panels at a lower level therein for fluidizing the recirculating solid particulate material, which material is recycled back into a combustion vessel of the fluidized bed heat generating system.

REFERENCES:
patent: 3893426 (1975-07-01), Bryers
patent: 4449482 (1984-05-01), Leon et al.
patent: 4633818 (1987-01-01), Horlitz, Jr. et al.

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