FIELD: heating.
SUBSTANCE: boiler includes a furnace, a solid phase separator, a gas damper, two fluidised bed heat exchange chambers; the first fluidised bed heat exchange chamber is located above the second heat exchange chamber; a cooled solid phase is unloaded from the first chamber to the lower furnace, and the second heat exchange chamber is located between lower ends of return ducts of the first heat exchange chamber.
EFFECT: invention provides a possibility of more compact arrangement of heat exchangers and other components of a boiler system in a lower furnace.
9 cl, 3 dwg
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