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Spout structure of direct current burner of coal burning boiler of power station

A technology for burner nozzles and coal-fired boilers, which is applied in the direction of burners, burners burning powder fuel, and combustion methods, etc., which can solve the problems of poor combustion stability and unfavorable reduction of nitrogen oxides, and achieve good adaptability

Inactive Publication Date: 2011-03-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a nozzle structure of a once-through burner of a coal-fired boiler in a power station, which can effectively solve the disadvantages of poor combustion stability of the existing burner and the disadvantage of reducing the generation of nitrogen oxides

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  • Spout structure of direct current burner of coal burning boiler of power station
  • Spout structure of direct current burner of coal burning boiler of power station
  • Spout structure of direct current burner of coal burning boiler of power station

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Embodiment Construction

[0023] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0024] Such as figure 1 As shown, the present embodiment includes: a peripheral air nozzle 2, a blowback nozzle 3 and a direct flow nozzle 4, wherein: the reverse blow nozzle 3 is arranged on the upper part of the burner 1 nozzle, and the direct flow nozzle 4 is arranged on the lower side of the blowback nozzle 3, and the peripheral wind The nozzle 2 is arranged on the periphery of the blowback nozzle 3 and the straight nozzle 4 .

[0025] The described blowback nozzle 3 comprises: four sub-nozzles and a back-blowing baffle 6, wherein: the four sub-nozzles are parallel and arranged on the upper side of the direct-...

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Abstract

The invention relates to a spout structure of a direct current burner of a coal burning boiler of a power station, belonging to the technical field of thermal power generation and comprising a perimeter air spout, a reverse blowing spout and a direct current spout, wherein the reverse blowing spout is arranged at the upper part of the spout of the burner; the direct current spout is arranged on the lower side of the reverse blowing spout; and the perimeter air spout is arranged on the periphery of the reverse blowing spout and the direct current spout. The spout structure effectively solves the defects of poor stable burning property and difficulty to reduce the generation of nitrogen oxide of the traditional burner.

Description

technical field [0001] The invention relates to a device in the technical field of thermal power generation, in particular to a nozzle structure of a once-through burner of a coal-fired boiler in a power station. Background technique [0002] As the main force of power supply in our country, pulverized coal combustion boiler plays an indispensable role in economic development. However, the pollutants produced during the combustion of pulverized coal cause serious damage to the environment, and nitrogen oxides are one of the main pollutants. As the most effective way to reduce nitrogen oxides at present, the combination of the overall air classification in the furnace and the low NOx burner can effectively reduce the generation of NOx and control the emission of NOx below the national limit value. It is an economical and effective method. Environmental technology. Among them, the low NOx burner plays a decisive role in further reducing NOx emissions and reducing slagging, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D1/00
Inventor 范卫东章明川李友谊
Owner SHANGHAI JIAO TONG UNIV
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