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Boiler device with wall fitted burner for preventing water-cooled wall corroded by high-temp and slagging scorification

A technology for high-temperature corrosion and boiler equipment, which is applied to the combustion of block fuels and liquid fuels, the combustion of block fuels and gaseous fuels, the combustion of liquid fuels and gaseous fuels, etc. Slag and other issues

Inactive Publication Date: 2007-04-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature near the water cooling wall is high and the flue gas composition in the area near the water cooling wall is a reducing atmosphere, slagging is prone to occur in the burner area of ​​the furnace. After slagging occurs, the superheater will burst due to overtemperature, which also endangers the safe operation of the boiler.

Method used

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  • Boiler device with wall fitted burner for preventing water-cooled wall corroded by high-temp and slagging scorification
  • Boiler device with wall fitted burner for preventing water-cooled wall corroded by high-temp and slagging scorification
  • Boiler device with wall fitted burner for preventing water-cooled wall corroded by high-temp and slagging scorification

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Effect test

specific Embodiment approach 1

[0005] Specific Embodiment 1: Referring to Fig. 1 and Fig. 2, this embodiment prevents high-temperature corrosion and slagging of the water-cooled wall. The wall 1-1, the rear wall 1-2, and the side wall 1-3 are composed of the water cooling wall composed of the water cooling wall tube 1-3-1 and the fin 1-3-3 closely connected. The side walls 1-3 communicate with the secondary air duct 7 through the wall-mounted wind box 4, the air duct 5 connecting the wall-mounted wind box 4 and the secondary air duct 7, and the fins on the side walls 1-3 1-3-3 Remove forming gap 1-3-2. On the two side walls 1-3, a wall-mounted wind box 4 is installed, and the wall-mounted wind box 4 communicates with the air duct 5, and the other end of the air duct 5 is arranged in the secondary air duct 7, and a hot air damper is installed on the air duct 5 5-1. Four flue gas composition online samplers 6 are installed in the boiler burner area of ​​the furnace body 1. When the flue gas composition on bo...

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Abstract

The invention is a boiler device with combusting device arranged by the wall to prevent the high temperature corrosion and slag-bonding of the water cooling wall, relates to a anti-corrosion and anti-slag-bonding boiler device. It is a common problem that the water cooling wall in the combusting device area will corrode under high temperature and it is bearly effectively resolve. The invention provides a device of simple structure and easy operation.

Description

Technical field: [0001] The invention relates to a boiler plant for preventing corrosion and slagging. Background technique: [0002] The high-temperature corrosion of the water wall in the burner area is a common problem in coal-fired power plant boilers, and it is also one of the main reasons affecting the safe production of electric power. The high-temperature corrosion of the water-cooled wall in the burner area is a complex physical and chemical process, which is mainly related to the temperature near the water-cooled wall, gas composition, coal quality characteristics and the movement of coal powder particles. 1. The temperature near the water wall is high. Due to the uneven combustion in the furnace, the local temperature near the water wall increases, which increases the temperature of the water wall wall. 2. The flue gas composition in the area near the water wall is a reducing atmosphere. During the combustion of pulverized coal, the mineral components in the co...

Claims

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Application Information

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IPC IPC(8): F22B31/00F23L99/00F23M5/08F23C5/32F23C7/02
Inventor 李争起陈智超孙锐
Owner HARBIN INST OF TECH
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