Biomass Boiler Denitrification Combustion Device and Double Burner Biomass Boiler

Abstract

The invention provides a denitration burning device of a biomass boiler. A burning system of the denitration burning device comprises a burning chamber and a burner arranged in the burning chamber, wherein the middle portion of one end of the burning chamber is provided with a fuel inlet and an air inlet, the other end of the burning chamber is provided with a flame spray pipe, particularly the outer layer of the flame spray pipe is provided with a coaxial spray pipe outer sleeve, and the spray pipe outer sleeve and the flame spray pipe are provided with a cyclone air duct. The denitration burning device of the biomass boiler has the characteristics of simple structure and high burning efficiency. The invention further provides a dual-burner biomass boiler. The dual-burner biomass boiler comprises a boiler body, wherein an upper header, a lower header, an upper drum and a lower drum are arranged in the boiler body, a fuel inlet is provided below a front arch throat of the boiler, and particularly an afterburning port is provided between the throat and the fuel inlet on a front arch. Since the flame spray pipe of the burning system of the denitration burning device provided by the invention stretches into the boiler body through the afterburning port of the boiler body and the outer wall of the spray pipe outer sleeve is hermetically connected with the afterburning port of the boiler body to enable cyclone air of the cyclone air duct to enter the boiler body through the afterburning port, the burning system of the denitration burning device has the characteristics of high thermal efficiency, energy saving and environmental friendliness.

Description

technical field [0001] The invention relates to boiler combustion equipment, in particular to a boiler burner using granular biomass as fuel. Background technique [0002] Biomass fuel is made of agricultural and forestry waste (including straw, sawdust, bagasse, rice bran, etc.) Biomass fuel is a new type of clean fuel, which has the characteristics of renewable, clean and environmentally friendly, but also has defects such as low heat energy, large consumption, and slow combustion speed. An existing biomass boiler such as the Chinese boiler with application number 200810137245.3 The patent discloses that it includes a boiler body and a screw feeder. The boiler body has a base, a front wall, a rear wall, a front arch and a rear arch. The base of the boiler is provided with a chain grate, and the screw feeder is arranged on the boiler body. Biomass fuel is supplied on the outward chain grate. When this kind of boiler is running, the biomass fuel is fed into the furnace by ...

AI Technical Summary

Problems solved by technology

Biomass fuel is a new type of clean fuel, which has the characteristics of renewable, clean and environmentally friendly, but also has defects such as low heat energy, large consumption, and slow combustion speed. An existing biomass boiler such as the Chinese boiler with application number 200810137245.3 The patent discloses that it includes a boiler body and a screw feeder. The boiler body has a base, a front wall, a rear wall, a front arch and a rear arch. The base of the boiler is provided with a chain grate, and the screw feeder is arranged on the boiler body. Biomass fuel supply on outward chain grate

When this kind of boiler is running, the biomass fuel is fed into the furnace by the chain grate for combustion, and the flue gas produced by combustion contains hydrocarbon radical CH i , NO x、 , O, H 2 , C and C n h m etc., it will cause waste of fuel and pollute the environment after being discharged, so it is necessary to improve

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