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A low-nox gas burner with multi-nozzle dispersed combustion

A gas burner and multi-nozzle technology, which is applied in the direction of gas fuel burners, burners, combustion methods, etc., can solve problems such as local high-temperature combustion instability, and achieve the effects of reducing NOx generation, lowering combustion temperature, and promoting mixing

Inactive Publication Date: 2017-01-18
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The three existing low NOx combustion technologies all have problems of local high temperature and / or combustion instability, therefore, it is of great significance to design a low NOx burner suitable for industrial applications

Method used

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  • A low-nox gas burner with multi-nozzle dispersed combustion
  • A low-nox gas burner with multi-nozzle dispersed combustion
  • A low-nox gas burner with multi-nozzle dispersed combustion

Examples

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Embodiment 1

[0038] A low NOx gas burner with multi-nozzle dispersed combustion, see figure 1 , figure 2 as well as image 3 , including a heat insulating tile 10, a first-stage burner 12, a second-stage burner 8, a first-stage fuel distribution pipe 4, an auxiliary burner 11 and an air box 2.

[0039] The longitudinal central axis of the heat insulating tile 10 is provided with a first passage 101, and the periphery of the first passage 101 is provided with a second passage 102 at equal intervals. The lower end of the heat insulating tile 10 and the upper end of the wind box 2 connected, and the first channel 101 communicates with the cavity of the air box 2, which can enhance the mixing of gas and combustion air; the second-stage burners 8 are evenly arranged along the outer circumference of the heat insulating tile 10, which can strengthen the heat load distribution in the furnace uniformity.

[0040] The lower end of the bellows 2 is provided with an air inlet 21, and the air inlet...

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Abstract

The invention provides a multi-spray-nozzle bulky combustion low-NOx gas combustor, which comprises a heat insulation tile, a first-stage combustor, a second-stage combustor, a first-stage fuel distribution pipe and an air box, wherein a first passage and a second passage are arranged on the heat insulation tile, the lower end of the heat insulation tile is connected with the upper end of the air box, in addition, the first passage is communicated with a cavity of the air box, the first-stage fuel distribution pipe is arranged in the first passage and the cavity of the air box, the second-stage combustor is arranged in the second passage, the top end of the first-stage fuel distribution pipe is provided with a hemispherical sealed surface, the tail end of the first-stage combustor is arranged on the hemispherical sealed surface, and in addition, the inside of the first-stage fuel distribution pipe is communicated with the inside of the first-stage combustor. The multi-spray-nozzle bulky combustion low-NOx gas combustor technically synthesizes fuel grading, smoke gas recirculation and multipoint bulky combustion control techniques, and has the characteristics that long flame in multipoint bulky combustion can be formed, the peak temperature of the combustion flame is reduced, the distribution of heat loads in a furnace is uniform, and the generation amount of NOx is ultralow.

Description

technical field [0001] The invention relates to the field of combustion equipment for industrial furnaces, and specifically discloses a low NOx gas burner with multi-nozzle dispersed combustion. Background technique [0002] The burner is one of the main components in the combustion equipment of industrial furnaces. The NOx generated during the combustion process is one of the main factors causing environmental pollution. The level of NOx generation has become one of the important indicators to measure the combustion performance of the burner. [0003] In the existing industrial technology, there are mainly three types of NOx generation: fuel-type NOx, thermal-type NOx and fast-type NOx. The NOx generated during gaseous fuel combustion is mainly fuel-type NOx and thermal NOx. Therefore, controlling the generation of NOx for burning gaseous fuel is mainly to control the generation of thermal NOx and fuel-type NOx or to reduce the generated NOx. Temperature has a decisive eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/20F23D14/58
Inventor 陈冬林杨建波吴雪晴
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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