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Strong-swirling-flow fuel staging ultra-low-nitrogen gas burner

A gas burner and fuel grading technology, applied to gas fuel burners, burners, combustion methods, etc., can solve the problems of reduced oxygen partial pressure, unstable combustion, vibration, etc., and achieve less emissions, simple and reliable structure, and high combustion efficiency full effect

Inactive Publication Date: 2016-06-01
BEIJING LONGTAO ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main problem of flue gas recirculation is that the decrease of oxygen partial pressure and the increase of air flow rate make combustion unstable, and phenomena such as flameout and oscillation occur.

Method used

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  • Strong-swirling-flow fuel staging ultra-low-nitrogen gas burner

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Embodiment Construction

[0024] The following is attached figure 1 , the present invention will be further described through specific embodiments. The attached figure 1 The descriptions of reference signs are as follows: 1. Air channel; 2. Primary fuel nozzle; 3. Primary fuel flame stabilization disc; 4. Swirl disc inner ring; 5. Swirl vane; 6. Swirl disc outer ring; 7. Secondary fuel nozzle; 8, flaring; 9, graded fuel nozzle.

[0025] An embodiment of the present invention discloses a highly swirling fuel staged ultra-low nitrogen gas burner, specifically as attached Figure 1-3 As shown, it includes a combustion head, which includes: a cylindrical air channel 1; a swirl disc arranged inside the cylindrical air channel, the swirl disc includes a swirl disc outer ring 6, a swirl disc Flow plate inner ring 4, the swirl plate 5 arranged between the outer ring 6 and the inner ring 4; a primary fuel nozzle 2 arranged at the center of the burner swirl disk inner ring 4, the primary fuel nozzle includes ...

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Abstract

The invention relates to a strong-swirling-flow fuel staging ultra-low-nitrogen gas burner. A burner head of the burner mainly comprises a cylindrical air flow channel, a swirling flow plate, a primary fuel spray pipe, a primary fuel flame stabilizing plate, a secondary fuel spray pipe, a flared opening and a staged fuel spray pipe, and composition structures of all components and relative structures among all the components are further optimally arranged, so that the strong-swirling-flow fuel staging ultra-low-nitrogen gas burner with broad application prospects is finally achieved. The problems of burning instability, low heat efficiency and the like of premixed flame and flue gas recycling can be solved while generation of NOx is reduced, and the strong-swirling-flow fuel staging ultra-low-nitrogen gas burner has the advantages of being low in burning pollutant emission, sufficient in burning, good in burning stability, high in burning efficiency, simple and reliable in structure and the like, and is suitable for burning of civil and industrial furnaces, reformers and gas turbines.

Description

technical field [0001] The invention relates to a low-nitrogen gas burner, in particular to a graded ultra-low-nitrogen gas burner with strong swirling flow fuel. Background technique [0002] Nitrogen oxides (NOx) are one of the main pollution sources of the atmosphere and an important precursor of PM2.5 secondary particulate matter. As environmental pollution continues to intensify, smog and haze frequently appear in key areas of our country, which has caused great harm to people's health. With the combustion and utilization of natural gas, petroleum liquefied gas and coal synthesis gas, the pollution of gas combustion, especially the reduction of NOx emissions, is an urgent task. Therefore, it is of great significance to control the production of NOx during the combustion of natural gas and vigorously develop low-nitrogen combustion technology. [0003] Existing low-nitrogen combustion technologies include staged combustion, premixed combustion, flue gas recirculation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/00F23D14/46F23D14/58
CPCF23D14/00F23D14/46F23D14/58F23D2900/14
Inventor 潘涛宋少鹏宋光武金大建
Owner BEIJING LONGTAO ENVIRONMENTAL TECH CO LTD
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