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Radial gradient two air-controlled cyclone coal dust combustor

A pulverized coal burner and wind swirling technology, applied in the direction of burners, burners burning powder fuel, combustion methods, etc., to achieve the effects of reducing emissions, enhancing heat transfer and mass transfer intensity, and increasing the concentration of pulverized coal

Inactive Publication Date: 2005-09-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the defects or deficiencies in the above-mentioned prior art, the object of the present invention is to provide a radial thick-thin double-air swirl pulverized coal burner with double-toothed rings and double-cone flares to ensure that the combustion The device has good coal type adaptability, load adaptability and adjustability, and can ensure combustion stability and low-pollution combustion within a wide load range, and can be used under various operating conditions and coal type changes , to adjust the operating parameters of the burner conveniently and stably

Method used

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  • Radial gradient two air-controlled cyclone coal dust combustor
  • Radial gradient two air-controlled cyclone coal dust combustor
  • Radial gradient two air-controlled cyclone coal dust combustor

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Embodiment Construction

[0009] In order to understand the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and the embodiments completed by the inventor.

[0010] Referring to Fig. 1, 2, 3, Fig. 1 is the structural representation of the present invention's radial thick-thin type dual air-regulating swirl pulverized coal burner; figure 2 It is a view from the direction A of Fig. 1; Fig. 3 is a diagram of a burner nozzle assembly, which is a specific embodiment of the present invention.

[0011] According to the technical solution of the present invention, the radial thick-thin double-air swirl pulverized coal burner includes an inner primary air channel 4, an outer primary air channel 3, an inner secondary air channel 10, an outer secondary air channel 11, and an inner secondary air channel. Secondary air swirl blades 8, outer secondary air swirl blades 9, inner tooth-shaped combustion stabilization ring 1, ou...

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Abstract

The present invention discloses a radial gradation double air regulation cyclone coal powder burner, including nozzle with burner, internal first air channel, external first air channel, internal second air channel, external second air channel, internal tooth profile combustion-stabilizing ring, external tooth profile combustion-stabilizing ring, double-cone flare, stopper coal powder concentrator and central pipe cyclone coal powder burner. It utilizes two air channels to implement radial gradation combustion.

Description

1. Technical field [0001] The invention belongs to the technical field of combustion, and relates to a pulverized coal burner, and further relates to a radial thick-thin double-air swirl pulverized coal burner with double-toothed rings and double-cone flares. 2. Background technology [0002] At present, the pulverized coal swirl burners that are widely used are mainly double-adjustable air swirl burners. Among them, some burners use the radial thick-thin combustion method, and some burners use external tooth-shaped stable combustion at the primary air nozzle. ring. The dual-air-regulating burners currently in operation are usually used to burn coals that are easy to ignite (such as bituminous coal), while the combustion stability of coals that are difficult to ignite (such as anthracite and lean coal) is poor. At the same time, most of the swirl burners need to be strengthened in terms of controllability and regulation of pulverized coal concentration in rich-lean combusti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D1/02
Inventor 周屈兰惠世恩徐通模
Owner XI AN JIAOTONG UNIV
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