FIELD: heating.
SUBSTANCE: system includes an air heating unit, systems for fuel feed, ash and slag removal and control and monitoring of process equipment. The proposed system includes a system of two-stage flue gas cleaning, the first stage of which is represented by a screw ash collector installed in horizontal part of a flue gas duct between an outlet connection pipe of combustion chamber and a group heat exchanger. Removal of particles is performed through a vertical sleeve that is tangentially led to the collector housing, and the ash remover, and the second stage is represented by a transient breeching of the group heat exchanger serving as an inertia collector.
EFFECT: improving efficient and safe operation of the system.
3 cl, 5 dwg
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