burner

A burner and light coal powder technology, applied in the direction of burner, combustion type, combustion method, etc., can solve the problems of short residence time, low burnout performance, high nitrogen oxide emissions, etc., to achieve improved burnout performance, The effect of enhancing the separation effect of shades

Active Publication Date: 2020-01-03
王志远
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Make the residence time of large particles of pulverized coal in the furnace short, which is not conducive to the burnout of pulverized coal
Therefore, due to the poor concentration separation effect of pulverized coal in the burner, the burnout performance is not high, resulting in high nitrogen oxide emissions

Method used

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Embodiment Construction

[0040] The invention provides a burner to improve the concentration separation effect and burnout performance of pulverized coal.

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0042] Please refer to figure 1 , the embodiment of the present invention provides a burner, including a burner body 4, and also includes a separation component 1 connected to the burner body 4, the separation component 1 has a powder inlet portion, a thick coal powder sub-channel 1a and a light coal pulverized sub-channel 1...

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Abstract

The invention provides a burner. The burner comprises a burner body (4) and a separating part (1) connected with the burner body (4). The separating part (1) comprises a powder inlet portion, a thickpulverized coal branch channel (1a) and a thin pulverized coal branch channel (1b). The burner body (4) comprises a thick pulverized coal channel (4a) communicating with the thick pulverized coal branch channel (1a), and a thin pulverized coal channel (4b) communicating with the thin pulverized coal branch channel (1b). The thick pulverized coal channel (4a) and the thin pulverized coal channel (4b) are independent from each other. With the burner, the effect of separation of thick pulverized coal from thin pulverized coal is effectively improved; furthermore, different nozzle air speeds can be set according to the conditions of different coal properties, the flow area or the internal structure of the thick pulverized coal channel and the flow area or the internal structure of the thin pulverized coal channel can be adjusted, then, the flow velocity of the thick pulverized coal air flow in the thick pulverized coal channel and the flow velocity of the thin pulverized coal air flow in the thin pulverized coal channel can be conveniently adjusted, and the performance of burning out is improved.

Description

technical field [0001] The invention relates to the technical field of coal combustion equipment, in particular to a burner. Background technique [0002] As the national environmental protection regulations have stricter requirements on nitrogen oxide emissions, the selection of burners has become an inevitable choice for reducing nitrogen oxide emissions in boilers. [0003] The current burner mainly uses air staged combustion and pulverized coal rich-lean separation combustion methods to achieve the suppression of NOx formation. [0004] However, the thick-lean separation of the pulverized coal airflow in the burner only relies on inertial separation in the primary air duct, and the thick-lean separation of the pulverized coal airflow is carried out simply, and the thick-lean separation effect is poor (not real physical isolation). After the pulverized coal airflow is injected into the furnace, it presents the characteristics of high wind speed around and high pulverized...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D1/02
CPCF23D1/02F23D2201/20
Inventor 王志远
Owner 王志远
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