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Micro oil content ignition coal powder burner capable of improving initial ignition heat

A technology for pulverized coal combustion and initial ignition, which is applied in the directions of burners, combustion methods, combustion types, etc., and can solve the problems of difficult ignition and unstable combustion of pulverized coal

Active Publication Date: 2011-10-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the pulverized coal is not easily ignited and the combustion is unstable in the existing combustion device, the present invention further provides a pulverized coal combustion device that can increase the initial ignition heat with a small amount of oil

Method used

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  • Micro oil content ignition coal powder burner capable of improving initial ignition heat
  • Micro oil content ignition coal powder burner capable of improving initial ignition heat
  • Micro oil content ignition coal powder burner capable of improving initial ignition heat

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specific Embodiment approach 1

[0009] Specific implementation mode one: combine figure 1 , 2 , 3 illustrate the present embodiment, the micro-oil quantity ignition pulverized coal combustion device that can improve the initial ignition heat described in the present embodiment comprises No. 1 main oil gun 14, No. 2 main oil gun 15 and oil gun installation branch pipe 20; The oil quantity ignites the pulverized coal combustion device also includes adiabatic combustion sleeve 18, and an adiabatic combustion sleeve 18 is installed in the inlet end of oil gun installation branch pipe 20, No. 1 main oil gun 14, No. 2 main oil gun 15 from top to bottom Set in the inlet end of the oil gun installation branch pipe 20 , both the No. 1 main oil gun 14 and the No. 2 main oil gun 15 communicate with the inner cavity of the adiabatic combustion sleeve 18 .

[0010]According to the volatile content of ignited pulverized coal, calorific value, practical factors such as wind speed, one or more auxiliary oil guns can be arr...

specific Embodiment approach 2

[0011] Specific implementation mode two: combination figure 1 and image 3 Describe this embodiment, the micro-oil volume ignition pulverized coal combustion device of this embodiment also includes a partition 19, and the partition 19 is inserted in the inner cavity of the heat-insulating combustion sleeve 18 along the axial direction and the heat-insulating combustion sleeve The inner cavity of 18 is divided into upper and lower two parts, No. one main oil gun 14 is communicated with the upper inner cavity of adiabatic combustion sleeve 18, and No. two main oil guns 15 is communicated with the lower inner cavity of adiabatic combustion sleeve 18. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0012] Specific implementation mode three: combination figure 1 , 2 , 3 illustrate the present embodiment, the micro-oil quantity ignition pulverized coal combustion device described in the present embodiment also includes auxiliary oil gun 16, and auxiliary oil gun 16 is arranged on the same side as No. 1 main oil gun 14 and No. 2 main oil gun 15. The oil gun 16 is arranged on the shoulder of the lower side wall of the outlet end of the oil gun installation branch pipe 20 . Other components and connections are the same as those in the second embodiment.

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Abstract

The invention provides a micro oil content ignition coal powder burner capable of improving initial ignition heat, which relates to a burner. The invention solves the problems of difficult ignition of coal powder and unstable burning of the existing burner. The invention has the technical scheme that the micro oil content ignition coal powder burner capable of improving the initial ignition heat of the invention comprises a No.1 main oil gun, a No.2 main oil gun, an oil gun installing branch pipe and a heat insulation burning sleeve barrel, wherein the heat insulation burning sleeve barrel isarranged in the inlet end of the oil gun installing branch pipe, the No.1 main oil gun and the No.2 main oil gun are arranged in the inlet end of the oil gun installing branch pipe from top to bottom, and both of the No.1 main oil gun and the No.2 main oil gun are communicated with an inner cavity of the heat insulation burning sleeve barrel. The invention is mainly applied to W flame boilers, the burnt and used coal types belong to lean coal and blind coal with the characteristics of low volatilization constituent content, high ignition temperature and difficult ignition.

Description

technical field [0001] The invention relates to a combustion device, in particular to a pulverized coal combustion device with a small amount of oil used in a W-shaped flame boiler, and belongs to the technical field of W-flame boilers. Background technique [0002] As a basic energy source and an important raw material, coal accounts for about 70% of my country's primary energy production and consumption, and 76% of fuel in my country's electric power industry comes from coal. Low volatile (dry ash-free basis volatile V daf less than 20%), high ash, low calorific value coal is difficult to burn coal, difficult to burn coal (including anthracite and lean coal) accounts for more than two-fifths of my country's power coal, of which anthracite occupies a certain proportion. Anthracite has a high degree of coalification, low volatile matter content, and the ratio of volatile matter calorific value to coal calorific value is low, so it is difficult to catch fire; the lithofacies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D1/00
Inventor 李争起刘春龙陈智超孔维光曾令艳赵洋杨连杰
Owner HARBIN INST OF TECH
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