The invention relates to a
combustion, heat exchange and dust removal integrated small
biomass normal pressure hot water boiler and belongs to the technical field of
combustion equipment. A boiler body heating surface is arranged on the upper portion of a grate; the heating surfaces on the front side and the left and right sides of a
hearth are of box plate water sleeve structures; a first-stage thread
smoke pipe heating surface is arranged in an upper box body, and a second-stage thread
smoke pipe heating surface is arranged in a rear box body; a semi-
ellipsoid-shaped boiler arch is arranged above the front half part of the grate in the
hearth; fuel is combusted on the flat-pushing reciprocating grate, and after the fuel is fully combusted under the effect of the semi-
ellipsoid-shaped boiler arch and exchanges heat with a perimeter
radiation heating surface, high temperature fume enters the first-stage thread
smoke pipe heating surface along the upper surface of the semi-
ellipsoid-shaped boiler arch, makes a turn by 90 degrees to enter the second-stage thread smoke pipe heating surface after heat exchange and directly enters a dust removal device after heat exchange. The
combustion, heat exchange and dust removal integrated small
biomass normal pressure hot water boiler has the advantages that the
automation degree is high, combustion operation is stable, heat efficiency is high, the emission load of pollutants is little, fuel applicability is good, the structure is compact, and
biomass fuel combustion systematic application can be achieved.