Rich-lean separated pulverized coal burner

A technology of pulverized coal burner and thick-lean separation, which is applied in the direction of burner, burner for burning powder fuel, combustion method, etc., and can solve the problems that cannot meet the production and operation requirements of power plants, and have a long service life.

Active Publication Date: 2013-08-28
HARBIN BOSHEN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for domestic power plant boilers whose combustion coal quality cannot reach the design value, and power plant boilers that burn a large amount of low-quality bituminous coal, lean coal, or anthracite, the existing level of thick-lean combustion technol

Method used

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  • Rich-lean separated pulverized coal burner
  • Rich-lean separated pulverized coal burner
  • Rich-lean separated pulverized coal burner

Examples

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specific Embodiment approach

[0006] Specific implementation: it includes burner inlet elbow 1, fixed separation block I2-1, fixed separation block II2-2, fixed separation block III2-3, burner inlet square and round joint 3, pulverized coal concentrator 4 , adjustable block 5, equalizer plate 6, burner nozzle 7, concave blunt body 8, offset secondary air nozzle 9, partition 10, flange 11, rotating shaft 12, inlet elbow 1 and burner inlet The square and round joints 3 are connected by flanges 11, the square and round joints 3 at the burner inlet are connected with the pulverized coal concentrator 4 by welding, and the pulverized coal concentrator 4 and the burner nozzle 7 are connected by welding. It is characterized in that: the burner inlet elbow 1 The fixed separation block I2-1 and the fixed separation block II2-2 are provided on both sides of the inner wall, and the fixed separation block III2-3 is provided on both sides of the inner wall of the burner inlet radius joint , said adjustable stopper 5 is ...

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Abstract

The invention relates to a pulverized coal burner, discloses a pulverized coal burner for a four-corner tangential burning and W-type flame burning pulverized coal boiler, and specifically discloses a vertical rich-lean separated pulverized coal burner. The rich-lean separated pulverized coal burner is characterized in that the two sides of the inner wall of a burner inlet elbow are provided with a fixed separating link stopper I and a fixed separating link stopper II, the two sides of the circumference section inner wall of a burner inlet are provided with fixed separating link stoppers III, and a pulverized coal concentrator is internally connected with an adjustable link stopper through a rotating shaft; and the inclination angle (alpha 1) between the fixed separating link stopper I and the inlet elbow is 5 degrees to 45 degrees, the length (L1) of an inclined plane of the fixed separating link stopper I is 30-200 mm, and the inclination angle (alpha 2) of the fixed separating link stopper II is 5 degrees to 45 degrees. The rich-lean separated pulverized coal burner provided by the invention has the positive effects that the structure is simple, the cost is low, the operation and use are rapid, the installation and disassembly are convenient and accurate, and the rich-lean separated pulverized coal burner has the advantages of being safe and reliable, low in NOX discharge, efficient in burning and long in service life, and preventing scorification and high-temperature corrosion.

Description

technical field [0001] The present invention relates to a pulverized coal burner. This patent relates to a pulverized coal burner for four-corner tangential combustion and W-shaped flame combustion pulverized coal boilers, specifically a pulverized coal burner for vertical thick-thin separation. Background technique [0002] Pulverized coal thick-lean combustion is widely used in power plant pulverized coal boilers, and there are various types of pulverized coal thick-lean, but basically adopts horizontal thick-lean separation. However, for domestic power plant boilers whose combustion coal quality cannot reach the design value, and power plant boilers that burn a large amount of low-quality bituminous coal, lean coal, or anthracite, the existing level of thick-lean combustion technology cannot fully achieve stable combustion and low NO X , anti-slagging and high-temperature corrosion, long service life and other indicators cannot meet the production and operation requireme...

Claims

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Application Information

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IPC IPC(8): F23D1/00
Inventor 单玉华
Owner HARBIN BOSHEN TECH DEV CO LTD
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