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A low nitrogen oxide burner

A nitrogen oxide and nozzle technology, applied in the direction of burners, combustion methods, combustion types, etc., can solve the problems of reducing NOx, achieve the effects of reducing NOx, reducing environmental pressure, and avoiding high-intensity combustion

Active Publication Date: 2016-11-02
CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD
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Problems solved by technology

[0004] In view of this, the present invention provides a low nitrogen oxide burner, which overcomes the problem that the prior art cannot further reduce NOx due to the use of a rotating structure

Method used

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  • A low nitrogen oxide burner
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Embodiment Construction

[0021] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0022] like figure 1 As shown, a low nitrogen oxide burner in this embodiment includes a burner body 2 having an axis and extending its discharge end into the main combustion zone 1. The burner body 2 is provided with a device for introducing fuel into the main combustion zone 1 The fuel nozzle 3 and the primary air nozzle 4, secondary air nozzle 5, and tertiary air nozzle 6 that can introduce air into the main combustion zone, and a primary flame stabilization control is arranged between the primary air nozzle 4 and the fuel nozzle 3 Zone 7 can carry out flame stabilization control, a secondary flame stabilization control zone 8 is arranged between the primary flame ...

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Abstract

The invention discloses a burner with low nitrogen oxide and belongs to the technical field of burners. The burner comprises a burner body. The burner body is provided with an axis, and the discharge end of the burner extends into a main combustion area. The burner body is provided with fuel nozzle which can guide fuel into the main combustion area and a first-level air nozzle, a second-level air nozzle and a third-level air nozzle which can guide air into the main combustion area. A first-level flame stability control area is disposed between the first-level air nozzle and the fuel nozzle. A second-level flame stability control area is disposed between the first-level flame stability control area and the second-level air nozzle. The second-level flame stability control area and the third-level air nozzle intersect in the main combustion area. The burner has the advantages that the three levels of combustion structures which are sequentially communicated are used, partial high-intensity combustion is avoided while combustion stability is guaranteed, NOx is greatly lowered by more than 30%, NOx emission is reduced greatly, and environment protection pressure is relieved favorably.

Description

technical field [0001] The invention belongs to the technical field of burners and relates to a low nitrogen oxide burner. Background technique [0002] At present, the burners used in metallurgical heating furnaces usually adopt staged combustion technology, and the primary combustion air adopts a rotating structure to strengthen the diffusion and mixing intensity of air and fuel, so as to ensure combustion stability and flame rigidity. Although the above-mentioned burners can reduce NOx to a certain extent, the rotating wind structure not only ensures combustion stability and flame rigidity, but also increases local combustion intensity to a certain extent, which limits the further reduction of NOx and puts pressure on environmental protection. [0003] In response to the above problems, it is necessary to improve the burner structure, cancel the rotating structure, and adopt a flame-stabilizing structure to ensure the stability of the flame while further reducing the gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/02F23D14/46
CPCF23D14/02F23D14/48F23D14/60
Inventor 程奇伯张道明王宏宇
Owner CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD
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