Wave Separation Rotary Fly Ash Combustion Device

Abstract

The invention discloses a waveform separation rotary fly ash burnout device, which comprises a first air connecting pipe, a second air connecting pipe, an air lance and a plurality of cyclone air nozzles. Folded plates respectively comprise a first wing and a second wing; the first wings are respectively longer than the second wings; the folded plates are respectively and obliquely arranged at highest points of a front arch of a chain-grate boiler in a structure that the first wings are respectively lower than the second wings; both ends of each first wing and both ends of each second wing are respectively and fixedly arranged on two side walls of the chain-grate boiler to form a suspension space burning zone together with the front arch of the chain-grate boiler, a rear arch of the chain-grate boiler and the two side walls of the chain-grate boiler; the air lance is welded at the upper edges of the second wings; both ends of the air lance horizontally extend to pass through the two side walls of the chain-grate boiler to be respectively connected with the two air connecting pipes; and the cyclone air nozzles are evenly arranged in the length direction of the air lance located in the chain-grate boiler. According to the waveform separation rotary fly ash burnout device disclosed by the invention, the problems that the combustible gas content is high and the carbon content in fly ash is high in flue gas of the coal chain-grate boiler, the heat efficiency is low and black smoke is emited from a chimney are solved.

Description

technical field [0001] The invention relates to the technical field of suspension combustion of coal-fired boilers, in particular to a waveform separation and rotating fly ash combustion device. Background technique [0002] The chain boiler is a layer fired furnace with a high degree of mechanization. It is named because the grate is similar to the chain crawler. It is a type of furnace widely used in industrial boilers. It is commonly used in the capacity of 4-65t / h (or 2.8-64MW), and even small ones of 1-2t / h It is used in capacity boilers. The chain furnace is a front-mounted furnace. The coal combustion process is completed while moving. It has stable combustion conditions, simple structure, convenient operation, and low labor intensity. It is widely used in our country. [0003] In the process of realizing the present invention, the inventor finds that there are following shortcomings in the prior art: [0004] The chain furnace belongs to the moving layer combustio...

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Problems solved by technology

[0005] Aiming at the existing problems and limitations in the combustion technology of the chain furnace, the present invention solves the problems of high carbon content and low thermal efficiency in the fly ash of the coal-fired chain boiler by reducing the carbon content of the fly ash of the chain furnace and the content of combustible gas in the flue gas. , The problem of black smoke from the chimney

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