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Adherence air device for preventing high-temperature corrosion of water cooling wall of refuse burning boiler

A technology of waste incineration and high-temperature corrosion, which is applied in combustion chambers, combustion methods, combustion equipment, etc., can solve problems such as inevitability and impact, and achieve the effects of long transportation distance, obvious benefits, and reduced flow resistance

Active Publication Date: 2013-03-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the wall-attached wind device is an additional device outside the original design of the boiler after all, and it is inevitable to affect the combustion, heat transfer and flow inside the boiler

Method used

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  • Adherence air device for preventing high-temperature corrosion of water cooling wall of refuse burning boiler
  • Adherence air device for preventing high-temperature corrosion of water cooling wall of refuse burning boiler
  • Adherence air device for preventing high-temperature corrosion of water cooling wall of refuse burning boiler

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Embodiment Construction

[0023] The specific embodiments of the present invention will be described in further detail below, but the embodiments of the present invention are not limited thereto.

[0024] Such as figure 1 As shown, the present invention is used to prevent the high-temperature corrosion of the water wall of the waste incineration boiler.

[0025] Such as figure 2 As shown, the wall-attached wind device comprises a wall-attached wind box 2 and a wall-attached wind nozzle 4, one end of the wall-attached wind box 2 is connected with the wall-attached wind nozzle 4, and the other end of the wall-attached wind box 2 Be connected with air duct 9;

[0026] Such as image 3 , Figure 4 As shown, the wall-attached wind nozzle 4 includes nozzle fins 4-1, front baffles 4-2, bottom baffles 4-3, water wall tubes 6, water wall fins 7; front baffles 4- 2 Consists of inlet baffle 4-2-1, tapered baffle 4-2-2, and outlet baffle 4-2-3, and a purge slit 4-2 is opened on the outlet baffle 4-2-3 -4; r...

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Abstract

The invention discloses an adherence air device for preventing high-temperature corrosion of a water cooling wall of a refuse burning boiler. The adherence air device comprises an adherence air box and an adherence air nozzle, wherein one end of the adherence air box is connected with the adherence air nozzle; the other end of the adherence air box is connected with an air pipe; the adherence air nozzle comprises a nozzle fin, a front baffle, a bottom baffle, a water cooling wall pipe and a water cooling wall fin; the front baffle is composed of an inlet baffle, a reducing baffle and an outlet baffle; a blowing slit is formed on the outlet baffle; and a water cooling wall slit is formed by taking down the water cooling wall fin between two corresponding adjacent water cooling wall pipes. The adherence air nozzle adopts a reducing design, smoke is sprayed out from one side of a main smoke direction, and the adherence air direction is the same as the axial direction of the water cooling wall pipe; and with an injection area, the device realizes stable and reliable formation, little flow resistance, long conveying distance and large protection range. The device does not need multi-layer arrangement, causes little influence on the burning heat transfer of the original boiler, and effectively solves the problem of high-temperature corrosion of the water cooling wall of the refuse burning boiler.

Description

technical field [0001] The invention belongs to the technical field of power plant boilers, and in particular relates to a wall-attached wind device for preventing high-temperature corrosion of a water wall of a garbage incineration boiler. Background technique [0002] Compared with coal-fired boilers, the flue gas in waste incineration boilers has the characteristics of high moisture and fly ash content, and the flue gas contains higher concentrations of HCl and CO, as well as SO 2 , NO x and other acidic gases, coupled with the high content of heavy metals in fly ash. The harsh flue gas environment in the furnace makes the mechanism of high-temperature corrosion of water-cooled wall tubes in waste incineration boilers more complicated than that of coal-fired boilers, and high-temperature corrosion is more likely to occur. [0003] After high-temperature corrosion occurs on the water-cooled wall, the wall thickness of the water-cooled wall will be thinned. According to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C7/00F23L9/00F23M5/08
Inventor 马晓茜林海
Owner SOUTH CHINA UNIV OF TECH
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