Combustion, heat exchange and dust removal integrated small biomass normal pressure hot water boiler

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of combustion equipment, in particular to a hot water boiler burning biomass particle fuel, especially to a small biomass normal pressure hot water boiler integrating combustion, heat exchange and dust removal. Background technique [0002] Fossil fuels such as petroleum, coal, and natural gas are currently the main energy sources in the world, accounting for about 80% of total energy consumption. However, due to the year-by-year decline of its reserves, and the global warming, acid rain and smoke pollution caused by the production of C02, S02, NOX and a large amount of smoke and dust caused by fossil fuels in the application process, biomass energy has caused serious environmental pollution. , renewable, and widely distributed are considered to be a clean energy with great potential to solve my country's energy crisis. According to statistics, every 10,000 tons of biomass fuel can replace 0.8-10,000 tons of...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a small biomass atmospheric hot water boiler with integrated combustion, heat exchange and dust removal, which solves the problems in the prior art that the discharge of pollutants from small boilers does not meet the environmental protection standards, and the applicability of straw fuels is poor. The integrated design and the structure that the heating surface doubles as an economizer can reduce the overall structural size of the boiler, which is easy to install and occupies a small area

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