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Low nitrogen oxide emission burner device

A technology of low nitrogen oxides and burners, which is applied in the direction of burners, gas fuel burners, combustion methods, etc., can solve the problems of lack of technically mature and excellent products, achieve firm and stable flames, reduce the concentration of nitrogen oxides, and reduce combustion Effect of Temperature and Burning Rate

Pending Publication Date: 2019-04-05
唐山冀东石油机械有限责任公司 +1
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  • Application Information

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Problems solved by technology

Domestic burner manufacturers have not yet mastered the technology of ultra-low nitrogen burners, and lack products with mature technology

Method used

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] The first embodiment is a burner device with low nitrogen oxide emission in an integrated structure in which the main fan 14 is directly connected to the air duct 2 .

[0027] see figure 1 , figure 2 , image 3 The inside of the air duct 2 is provided with a tubular gas chamber 18, and the tubular structure is a variable-diameter tubular structure. The diameter of the front section is thick, and the diameter of the rear section is thin. The outer cylindrical surface of the thick tube diameter section of the gas chamber 18 is provided with at least dozens of long gas partition plates 3 radially arranged, and a plurality of gas partition plates 3 divide the gap between the gas chamber 18 and the air duct 2. The annular cavity is divided into several premixing chambers 22 with small volume, and small-diameter gas injection holes 16 are evenly ...

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Abstract

The invention relates to a low nitrogen oxide emission burner device. A tubular gas chamber is arranged inside an air pipe; a multi-chamber premixer structure is formed by gas separation plates and gas spray orifices on the outer cylindrical surface of the gas chamber; a central air pipe is arranged inside the air pipe; a gas inlet hole is formed in the outer circular surface of the central air pipe; one end of the central air pipe is connected to a kindling material draught fan, and the other end of the central air pipe is provided with a kindling material burning head; the front end of the air pipe is provided with a secondary mixing device which sucks part of flue gas in a furnace hearth by a gas inlet annular passage of a furnace chamber of the secondary mixing device through the negative pressure effect formed by high-speed and high-temperature airflow at the front end of the air pipe; the air pipe is connected to a main draught fan which is connected to an air inlet channel; a flue gas introduction cavity and an air introduction cavity are arranged inside the air inlet channel; two stages of ventilation doors are arranged at the lower part of the air introduction cavity; andthe proportion of air and flue gas entering the main draught fan is adjusted through the two stages of ventilation doors. The low nitrogen oxide emission burner device is based on two-premixing, two-mixing, two-air distribution, two-adjustment and one-stabilization design structure and realizes the ultra-low nitrogen combustion.

Description

technical field [0001] The invention relates to a gas fuel burner matched with heat energy equipment, in particular to a burner device with low nitrogen oxide emission. Background technique [0002] Gas burners are widely used in various fields of the national economy. With the increasing use of domestic natural gas resources, the control of harmful gas emissions is becoming more and more stringent. Natural gas is widely replacing coal and fuel oil and becoming the main clean energy. Not only that, the country's requirement to start the blue sky defense war has put forward strict requirements on harmful components such as nitrogen oxides in the flue gas emitted by the burner, which has been raised to less than 30mg / m in Beijing, Tianjin, Hebei and other regions 3 ultra-low NOx emission levels. Compared with the previous national standard of 150mg / m 3 , has been greatly improved, and has reached the highest standards stipulated by some developed countries in the world. Thi...

Claims

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Application Information

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IPC IPC(8): F23D14/02F23D14/46F23D14/62
CPCF23D14/02F23D14/46F23D14/62
Inventor 刘兆海王爱洁刘勇卢旺达贾征冯华王冲褚宁轩
Owner 唐山冀东石油机械有限责任公司
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