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

CN103471101BInactive Publication Date: 2017-01-18CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-01-18
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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...

Examples

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...