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A low-load stable combustion burner

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

Active Publication Date: 2022-07-15
HARBIN BOILER CO LTD
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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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  • A low-load stable combustion burner
  • A low-load stable combustion burner
  • A low-load stable combustion burner

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specific Embodiment approach 1

[0031] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A low-load stable combustion burner 13, such as figure 1 and figure 2 As shown, it includes pulverized coal nozzle body 1, square-circle 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, thick The phase homogenizer 10 and the thin-phase spoiler 11, the pulverized coal nozzle body 1 is cylindrical, the thin-phase pulverized coal nozzle 3 is a square cylinder, and the pulverized coal nozzle body 1 is connected to the The thin-phase pulverized coal nozzles 3 are connected, the peripheral air nozzles 4 are hollow quadrangular pyramids, and the peripheral air nozzles 4 are arranged on the outer layer of the thin-phase pulverized coal nozzles 3, and the dense-phase pulverized coal pipes 5 are arranged on the pulverized coal nozzle bodies 1, 1, and 3. In the overall structure formed by the squar...

specific Embodiment approach 2

[0035]DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 2 A low-load stable combustion burner 13 includes 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 pipe 5, a support plate 6, a venturi The concentrator 7, the flame stabilizer 8, the dense phase homogenizer 10 and the light phase spoiler 11, the pulverized coal nozzle body 1 is cylindrical, the light phase pulverized coal nozzle 3 is a square cylinder, the The pulverized coal nozzle body 1 is connected with the thin-phase pulverized coal nozzle 3 through the square-circle transition head 2, the peripheral air nozzle 4 is a hollow quadrangular pyramid shape, and the peripheral air nozzle 4 is arranged on the outer layer of the thin-phase pulverized coal nozzle 3. The pulverized coal pipeline 5 is arranged in the overall structure composed of the pulverized coal nozzle body 1, the square-circle transition head ...

specific Embodiment approach 3

[0037] A low-load stable combustion burner 13, comprising 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, The flame stabilizer 8 and the thin-phase spoiler 11, the pulverized coal nozzle body 1 is cylindrical, the thin-phase pulverized coal nozzle 3 is a square cylinder, 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 air nozzle 4 is a hollow quadrangular pyramid shape, the peripheral air 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 in the pulverized coal nozzle body 1 In the overall structure formed by the square-circle transition head 2 and the light-phase pulverized coal nozzle 3, the dense-phase...

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Abstract

The invention relates to a stable combustion burner, belonging to the technical field of combustion equipment. In order to solve the problems of narrow load adjustment range and weak concentration capacity of the existing direct current burner, the present invention provides a low-load stable combustion burner, which includes a pulverized coal nozzle body, a thin-phase pulverized coal nozzle, a peripheral air nozzle, and a dense-phase pulverized coal pipe. , support plate, Venturi concentrator, flame stabilizer and thin-phase spoiler, the pulverized coal nozzle body is connected with the thin-phase pulverized coal nozzle, the perimeter air nozzle, the thin-phase pulverized coal nozzle, the dense-phase pulverized coal pipeline and the flame stabilizer Nested in sequence from outside to inside, the Venturi concentrator is arranged on the inner wall of the pulverized coal nozzle body, and the light phase spoiler is circumferentially arranged between the dense phase pulverized coal pipeline and the light phase pulverized coal nozzle. The invention concentrates the pulverized coal gas flow entering the burner through the venturi concentrator to form a thick and thin pulverized coal gas flow in the center and thin in the periphery, so as to achieve the effect of ignition and stable combustion.

Description

technical field [0001] The invention belongs to the technical field of combustion equipment, and in particular relates to a stable combustion burner. Background technique [0002] At present, domestic once-through burners are mainly divided into two types: thick-lean separation combustion and uniform combustion. Concentration separation is further divided into two types: horizontal concentration separation and vertical concentration separation combustion. No matter what form of concentration separation is achieved, it depends on efficient enrichment device. Reasonable design of pulverized coal enrichment ratio is the primary factor for the burner to stabilize combustion and reduce nitrogen. With the increasing demand for low nitrogen and deep peak shaving of boilers in the domestic thermal power industry, the mainstream burners in the market have become increasingly unable to meet the needs of users. [0003] Conventional DC concentration separation devices, such as shutte...

Claims

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Application Information

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Patent Type & Authority Patents(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 CO LTD
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