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Device for preventing burner nozzle from bonding slag, with axial adjustable blades

A burner nozzle and burner technology, which is applied in the field of combustion, can solve problems such as burner nozzle slagging, and achieve the effects of preventing burner nozzle slagging, increasing swirl intensity, and strengthening ignition

Pending Publication Date: 2018-06-15
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, the variable coal quality causes slagging at the burner nozzle, which has become an important challenge for pulverized coal boilers.

Method used

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  • Device for preventing burner nozzle from bonding slag, with axial adjustable blades
  • Device for preventing burner nozzle from bonding slag, with axial adjustable blades

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Experimental program
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Effect test

Embodiment Construction

[0017] The present invention is described in further detail below in conjunction with accompanying drawing:

[0018] refer to figure 1 , the device with axially adjustable blades to prevent slagging at the burner nozzle according to the present invention includes a pre-combustion chamber 7, a burner body 1 and a furnace 8, wherein the outer wall of the pre-combustion chamber 7 is provided with a remote exhaust air duct 3 , wherein the burner main body 1 is connected to the entrance of the pre-combustion chamber 7, the nozzle of the pre-combustion chamber 7 and the outlet of the remote overfired air duct 3 are connected to the boiler furnace 8, and the remote overfired air duct 3 is set There are a number of axial blades 6 for adjusting the swirling strength of the remote overburning air. The outer wall of the remote overburning air duct 3 is provided with a linkage adjustment device for adjusting the angle of the axial blades 6. During work, according to the coal quality and ...

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Abstract

The invention discloses a device for preventing a burner nozzle from bonding slag, with axial adjustable blades. The device comprises a precombustion chamber, a burner body and a furnace, wherein theouter wall of the precombustion chamber is provided with remote over-fire air ducts distributed annually, and the burner body communicates with an inlet of the precombustion chamber; a nozzle of the precombustion chamber and outlets of the remote over-fire air ducts communicate with a boiler furnace; and the remote over-fire air ducts are internally provided with a plurality of axial blades used for regulating the swirling intensity of remote over-fire air, and the outer wall of each remote over-fire air duct is provided with a linkage regulating device which is composed of an angle regulatinghandle, a dial, a linkage device and a transmission device and used for regulating the angle of the axial blades. The device can be used for preventing the burner nozzle from bonding the slag, and the safe, efficient and stable combustion in the furnace is ensured.

Description

technical field [0001] The invention belongs to the technical field of combustion such as coal-fired / thermal power stations and industrial pulverized coal boilers, and relates to a device with axially adjustable blades for preventing slagging at burner nozzles. Background technique [0002] In the medium and long term, coal, as a dominant energy resource for (thermal) power stations and industrial boilers, will not change. However, under the condition of market economy, the fluctuation of coal price brings frequent changes to the coal used by the boiler, which makes the burner deviate from the designed coal type, causing problems such as difficulty in ignition, unstable combustion, and slagging at the burner nozzle. [0003] With the continuous advancement of science and technology, various new types of burners continue to emerge, and the corresponding problems such as difficulty in ignition and unstable combustion have been resolved. For example: blunt body burners and bur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C7/00F23J9/00
CPCF23C7/006F23J9/00Y02E20/34
Inventor 牛艳青王登辉惠世恩张浩闫博康
Owner XI AN JIAOTONG UNIV
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