Air distribution system of biomass moulding fuel boiler

A molding fuel and air distribution system technology, applied in blast equipment, combustion methods, combustion equipment, etc., can solve the problems of easy combustion, high volatile content, inability to achieve combustion effect, etc., and achieve the effect of reducing content

Inactive Publication Date: 2011-04-13
GUANGZHOU DEVOTION THERMAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Biomass briquette fuel (bio-mass fuels, BMF for short) boiler is a new type of boiler different from coal-fired boilers, and BMF has a high density, high volatile content, and is easy to burn. The air distribution method of the above-mentioned traditional coal-fired boilers cannot achieve good burning effect

Method used

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  • Air distribution system of biomass moulding fuel boiler
  • Air distribution system of biomass moulding fuel boiler
  • Air distribution system of biomass moulding fuel boiler

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Embodiment Construction

[0022] see figure 1 and figure 2 , the air distribution system of the biomass briquette fuel boiler in this embodiment includes the furnace front air pipe 2 arranged on the boiler front wall 1, the bottom air pipe 4 arranged on the boiler side wall 3, and the swirl air pipe arranged above the bottom air pipe 4 The air duct 5; the air duct 2 in front of the furnace is set at the fuel feeding port 6 of the boiler Below, the furnace front air duct 2 includes a main pipe 7 and branch pipes 8. The main pipe 7 is arranged horizontally, and air outlets formed by seven branch pipes 8 are arranged at intervals on it. The discharge direction of the material port 6; the bottom air pipe 4 is symmetrically arranged on both sides of the boiler, and the bottom air pipe 4 is a direct blowing type and enters the grate surface, and there are nine air outlets 9 on each side; two air outlets 9 above the bottom air pipe 4 The air outlets 10 of the side swirl air duct 5 are set in a swirl direc...

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Abstract

The invention discloses an air distribution system of a biomass moulding fuel boiler, comprising a stokehole air pipe arranged on the front wall of the boiler, a bottom air pipe arranged on the side wall of the boiler, and a cyclone air pipe arranged above the bottom air pipe. In the invention, the stokehole air pipe is additionally arranged to ensure that biomass moulding fuel entering the boiler from a feed port of the boiler is rapidly dried and subjected to volatile matter separation so as to further burn rapidly; the biomass moulding fuel sufficiently burns under the condition of air compensation by the bottom air pipe at the side wall of the boiler; and the cyclone air pipe arranged above the bottom air pipe ensures the BMF (Biomass Moulding Fuel) to further burn sufficiently on one hand and ensures that powdery ash residues fall on a fire grate under the cyclone action so as to reduce the content of the powdery ash residues entering a radiation area along with high-temperature gas fume.

Description

technical field [0001] The invention relates to the air distribution system of a boiler, in particular to an air distribution system of a biomass briquette fuel boiler. Background technique [0002] At present, the air distribution methods of coal-fired boilers mainly include: waist-shrinking air distribution, inverted pagoda air distribution, and positive pagoda air distribution. These air distribution methods have their own characteristics. The air distribution of the positive pagoda can be simply regarded as the secondary air volume decreases from the lower layer to the upper layer, and the air distribution of the inverted pagoda increases from the bottom to the top. in between. [0003] The air distribution method used is mainly determined by the type of coal burned, the temperature, pressure of the boiler, and the carbon content of the fly ash. Air distribution can be simply understood as staged combustion, which is beneficial to the combustion of lean coal and anthra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L5/00
Inventor 常厚春马革于建霞陈燕芳陈平郁家清张开辉
Owner GUANGZHOU DEVOTION THERMAL TECH
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