Double-sandwich-layer annular hearth for three-cyclone biomass gasification combustor

Abstract

The invention belongs to the technical field of biomass combustion equipment, and in particular, relates to a double-sandwich-layer annular hearth for a three-cyclone biomass gasification combustor, which is fast in ignition, free of dense smoke, more sufficient in gasification reduction, cleaner in output flame, incapable of agglomerating fuels after combustion and capable of using 5-55 mm of block, piece and section type wood fuels. The double-sandwich-layer annular hearth for the three-cyclone biomass gasification combustor enables pyrolyzed and gasified gas to downwards move to pass through a fiery annular fire layer, so that pyrolysis and gasification are more sufficient, and biomass tar and water vapor can be greatly reduced; a fire grate combination piece can adjust the flame magnitude only by singly adjusting the air volume in a state of continuous low-speed rotation, so that the temperature control is simplified; biomass fuel particles are loosened by stirring through continuous rotation; and fuels are used as automatic gravity feeds, so that the slag block blockage formed by combustion of the fuels on the fire grate combination piece can be prevented more effectively, thecombustion assisting efficiency is improved, and the application prospect is broad.

Description

technical field [0001] The invention belongs to the technical field of biomass burning equipment, and in particular relates to fast ignition and no dense smoke, more sufficient gasification and reduction, cleaner output flames, no slag lumps after fuel combustion, and the ability to use 5-55 mm blocks. Wood fuel in shape, flake and segment. Background technique [0002] Over the past 20 years, biomass fuels, especially biomass granulated fuels, have been widely used in heating furnaces, water heaters, steam boilers and various hot blast stoves and other industries that require heat. [0003] There are two typical combustion technologies for biomass fuels in small and medium-sized specifications. The first is gasification combustion. Purification and cooling removes dust, water, wood vinegar, tar, etc. in the gas before burning. The second type is semi-gasification vertical or semi-gasification horizontal combustion. The biomass fuel is burned through the grate or chain row...

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Problems solved by technology

[0005] The technical problems mainly solved by the present invention: aiming at the combustion technology adopted by common biomass fuels at present, there are low calorific value conversion rate, thick ignition smoke, insufficient gasification reduction, and different degrees of slagging when the fuel is burned. Blocks and a small amount of tar, dust, and sparks in the output flame enter the heated boiler furnace with the flame, and it will be cleaned and repaired after a period of time. A three-swirl biomass gasification burner is provided. Annular hearth with double sandwich

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