Low-load combustor capable of combusting stably

A burner, low-load technology, applied in burners, burners burning powder fuel, combustion types, etc., can solve the problems of weak concentration capacity and narrow load adjustment range, reduce NOx generation, and adapt to coal types. The effect of strengthening and enlarging the fire area

Active Publication Date: 2021-02-05
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of narrow load adjustment range and weak concentration capacity of the existing once-through burner, the present invention provides a low-load stable combustion burner

Method used

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  • Low-load combustor capable of combusting stably
  • Low-load combustor capable of combusting stably
  • Low-load combustor capable of combusting stably

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specific Embodiment approach 1

[0031] DETAILED DESCRIPTION - A low-load stable combustion burner 13, such as figure 1 and figure 2 As shown, it includes pulverized coal nozzle body 1, square and round transition head 2, light phase pulverized coal nozzle 3, peripheral air nozzle 4, dense phase pulverized coal pipeline 5, support plate 6, Venturi concentrator 7, flame stabilizer 8, dense phase A phase homogenizer 10 and a light-phase spoiler 11, the pulverized coal nozzle body 1 is cylindrical, the pulverized coal nozzle 3 of the light phase is a square cylinder, and the pulverized coal nozzle body 1 passes through the square-circle transition head 2 and The light-phase pulverized coal nozzle 3 is connected, and the peripheral wind nozzle 4 is a hollow quadrangular truss shape. The peripheral wind nozzle 4 is arranged on the outer layer of the light-phase pulverized coal nozzle 3, and the dense-phase pulverized coal pipeline 5 is arranged on the pulverized coal nozzle body 1, In the overall structure forme...

specific Embodiment approach 2

[0035]DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 2 A low-load stable combustion burner 13, including a pulverized coal nozzle body 1, a radius transition head 2, a light-phase pulverized coal nozzle 3, a peripheral air nozzle 4, a dense-phase pulverized coal pipeline 5, a support plate 6, and a Venturi Concentrator 7, flame stabilizer 8, dense phase powder homogenizer 10 and light phase spoiler 11, the pulverized coal nozzle body 1 is cylindrical, and the pulverized coal nozzle 3 of the light phase is square cylindrical. The pulverized coal nozzle body 1 is connected to the light-phase pulverized coal nozzle 3 through the square-circle transition head 2. The peripheral wind nozzle 4 is a hollow quadrangular truss shape, and the peripheral wind nozzle 4 is arranged on the outer layer of the light-phase pulverized coal nozzle 3. The dense-phase coal The pulverized coal pipeline 5 is arranged in the overall structure formed by the pulverized coal nozzle body 1, the radius tr...

specific Embodiment approach 3

[0038] A low-load stable combustion burner 13, including a pulverized coal nozzle body 1, a square-circle transition head 2, a light-phase pulverized coal nozzle 3, a peripheral air nozzle 4, a dense-phase pulverized coal pipeline 5, a support plate 6, a Venturi concentrator 7, Flame stabilizer 8 and light-phase spoiler 11, the pulverized coal nozzle body 1 is cylindrical, the pulverized coal nozzle 3 is square cylindrical, and the pulverized coal nozzle body 1 passes through the square-circle transition head 2 Connected with the light-phase pulverized coal nozzle 3, the peripheral wind nozzle 4 is a hollow quadrangular truss, the peripheral wind nozzle 4 is arranged on the outer layer of the light-phase pulverized coal nozzle 3, and the dense-phase pulverized coal pipeline 5 is arranged on the pulverized coal nozzle body 1 1. In the overall structure formed by the square-circle transition joint 2 and the light-phase pulverized coal nozzle 3, the dense-phase pulverized coal pip...

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Abstract

The invention relates to a combustor capable of combusting stably, and belongs to the technical field of combustion equipment. In order to solve the problems that an existing direct-current combustoris narrow in load adjusting range and weak in concentration capacity, the invention provides a low-load combustor capable of combusting stably. The low-load combustor capable of combusting stably comprises a pulverized coal nozzle body, a light-phase pulverized coal nozzle, a peripheral air nozzle, a concentrated-phase pulverized coal pipeline, a supporting plate, a Venturi concentrator, a flame stabilizer and a light-phase flow disturbing device, wherein the pulverized coal nozzle body is connected with the light-phase pulverized coal nozzle, the peripheral air nozzle, the light-phase pulverized coal nozzle, the concentrated-phase pulverized coal pipeline and the flame stabilizer are sequentially nested from outside to inside, the Venturi concentrator is arranged on the inner wall of thepulverized coal nozzle body, and the light-phase flow disturbing device is annularly arranged between the concentrated-phase pulverized coal pipeline and the light-phase pulverized coal nozzle. According to the low-load combustor capable of combusting stably, pulverized coal airflow entering the combustor is concentrated through the Venturi concentrator, so that concentrated and light pulverized coal airflow with a concentrated center and a light periphery is formed, and the effects of ignition and stable combustion are achieved.

Description

technical field [0001] The invention belongs to the technical field of combustion equipment, in particular to a stable combustion burner. Background technique [0002] At present, domestic once-through burners are mainly divided into two types: thick-thin separation combustion and uniform combustion. The thick-thin separation is divided into two types: horizontal thick-thin separation and vertical thick-thin separation combustion. No matter which form of thick-lean separation depends on the high-efficiency enrichment device, the rational design of the concentration ratio of pulverized coal is the primary factor for stable combustion and nitrogen reduction of the burner. With the domestic thermal power industry's increasing demand for boilers with low nitrogen and deep peak regulation, the mainstream burners in the market have become increasingly unable to meet the needs of users. [0003] Conventional DC concentration separation devices, such as blinds, have a concentratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00
CPCF23D1/00
Inventor 王静杰徐彦辉于强夏良伟黄莺孙浩马孝纯王明昊沈涛贾庚孙晶殷亚宁闫燕飞宋欣韩升利
Owner HARBIN BOILER
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