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Industrial pulverized coal swirl combustion system using natural gas for supporting combustion

A combustion system and natural gas technology, applied in the direction of burners, combustion methods, combustion types, etc., can solve the problems of coal type adaptability, low load, stable combustion capacity, etc., and achieve uniform distribution of pulverized coal concentration, good combustion stability, and high combustion efficiency. high efficiency effect

Inactive Publication Date: 2011-07-06
XI AN JIAOTONG UNIV
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Problems solved by technology

However, in the face of the structural particularity of small and medium-sized pulverized coal boilers and industrial furnaces or industrial kilns, the adaptability of the existing small and medium-sized industrial pulverized coal boiler swirl combustion systems to coal types, low-load stable combustion capabilities, and low NO X Emissions shortcomings are still not well addressed

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  • Industrial pulverized coal swirl combustion system using natural gas for supporting combustion
  • Industrial pulverized coal swirl combustion system using natural gas for supporting combustion
  • Industrial pulverized coal swirl combustion system using natural gas for supporting combustion

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Embodiment Construction

[0021] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the natural gas-supported industrial pulverized coal swirling combustion system includes a horizontal columnar igniter 1 with a igniter nozzle at the right end, and a central wind inlet 102 on the left upper surface that overlaps the outer surface of the igniter 1 from the inside to the outside. The horizontal column ring-shaped central air channel 2, the horizontal column ring-shaped primary air channel 10 with a vertically bent primary air inlet 101 on the left end, the horizontal column ring-shaped direct-flow channel with a vertical direct-flow natural gas inlet 103 at the left end The natural gas channel 3, the horizontal column annular inner swirl secondary air passage 11 with the vertical inner swirl secondary air inlet 104 on the left end and the level of the outer swirl secondary air inlet 105 with the vertical outer sw...

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Abstract

The invention relates to an industrial pulverized coal swirl combustion system using natural gas for supporting combustion, and a central air channel, a primary air channel, a direct-flow natural gas channel, an internal swirl secondary air channel and an external swirl secondary air channel are sequentially superposed and arranged from inside to outside around the outer side surface of an ignition gun. The combustion system can improve a temperature field and enhance heat transfer by radiation with the help of the natural gas for supporting the combustion, and has the advantages of uniform rich-lean distribution of pulverized coal, high combustion efficiency, good combustion stability, extensive adaptability to coal types and low NOx emission.

Description

technical field [0001] The invention relates to an industrial pulverized coal combustion system, in particular to an industrial pulverized coal swirling combustion system supported by natural gas. Background technique [0002] After the emergence of advanced combustion technologies such as pulverized coal concentration technology and graded combustion technology, the swirl combustion system can not only organize a well-organized aerodynamic field in the furnace, but also produce a reasonable concentration distribution of pulverized coal flow in the ignition area, as well as the residence time of pulverized coal particles and the ignition distance. Ensure stable combustion, and can greatly reduce NO X gas emissions. At the same time, the combustion of the swirl combustion system is relatively independent, the arrangement and adjustment are relatively flexible, and the deviation of the flue gas temperature and steam temperature at the furnace outlet is small. Therefore, the ...

Claims

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Application Information

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IPC IPC(8): F23D17/00F23D1/02
Inventor 赵钦新吉用锋王云刚周津炜成丁南
Owner XI AN JIAOTONG UNIV
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