Multi-fuel-fired boiler for herb residue biomass fuels

Abstract

The invention discloses a multi-fuel-fired boiler for herb residue biomass fuels. The multi-fuel-fired boiler comprises a screw extrusion device, a dryer, a reciprocating conveying mechanism, a boiler body, an air feeding system, a vibrator and an energy saving unit, wherein the dryer is provided with a drying inlet and a drying outlet which are horizontal; a herb residue outlet of the screw extrusion device is in butt joint with the drying inlet; the drying outlet is in butt joint with a fuel inlet of the boiler body; the air feeding system comprises a first induced draft fan, a first thermal insulation tube, a cyclone separator, a second thermal insulation tube and an air distributing tube; a hot smoke outlet of the boiler body is connected to a smoke dust inlet of the cyclone separator through the first thermal insulation tube; one path of a clear air outlet of the cyclone separator is connected to an air inlet of the boiler body through the second thermal insulation tube; the other path of the clean air outlet is in butt joint with the air distributing tube; the boiler body is connected to a heating device of the dryer through the energy saving unit; and the vibrator is mounted on the boiler wall of the boiler body. The multi-fuel-fired boiler can effectively improve combustion efficiency, and avoids soot formation.

Description

technical field [0001] The invention relates to a boiler, in particular to a boiler for co-firing medicinal dregs and biomass fuels. Background technique [0002] At present, Chinese medicine production enterprises need to discharge a large amount of medicinal residues every day, which generally can only be treated as garbage and waste landfill, which not only occupies a large amount of landfill volume but also pollutes the environment. As a kind of biomass fuel, medicinal dregs are gradually being used as fuel. However, since the dregs are generally in the state of wet dregs after being produced by traditional Chinese medicine companies, their high moisture content, low calorific value, and alkali metal content are not conducive to combustion, and they are prone to a large amount of ash accumulation, which greatly reduces the combustion efficiency and Reduced impact on heat gain. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, ...

AI Technical Summary

Problems solved by technology

However, since medicinal dregs are generally produced by traditional Chinese medicine companies, they are in a state of wet medicinal dregs, with high moisture content, low calorific value, and alkali metal content, which are not conducive to combustion, and are prone to a large amount of ash accumulation, which greatly reduces combustion efficiency and Reduced impact on heat gain

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