Tuyere arrangement device for preventing high temperature corrosion of water-cooled wall of garbage incinerator

Abstract

The invention discloses a tuyere arrangement device for preventing high temperature corrosion of a water-cooled wall of a garbage incinerator, which comprises a front arch and a furnace wall. The front arch of the tuyere arrangement device is sequentially provided with a first row of secondary tuyeres, a second row of secondary tuyeres, a third row of secondary tuyeres and a fourth row of secondary tuyeres along the direction of the furnace wall, wherein a horizontal spacing between the first row of secondary tuyeres and the second row of secondary tuyeres is 0.2m to 0.4m; a horizontal spacing between the third row of secondary tuyeres and the fourth row of secondary tuyeres is equal to that between the first row of secondary tuyeres and the second row of secondary tuyeres; a spacing between the third row of secondary tuyeres and the second row of secondary tuyeres is 1.4m to 1.6m; and the furnace wall is sequentially provided with a first layer of burn-off tuyeres, a second layer of burn-off tuyeres and a third layer of burn-off tuyeres. The tuyere arrangement device aims to prevent a pipe bursting accident caused by high temperature corrosion of the water-cooled wall of the garbage incinerator and is suitable for technical transformation of a newly-built garbage incinerator and an existing garbage incinerator.

Description

technical field [0001] The invention relates to a garbage incinerator, in particular to a tuyere arrangement device for preventing high-temperature corrosion of a water wall of a garbage incinerator. Background technique [0002] In recent decades, the global economy has developed rapidly, science and technology have advanced rapidly, and people's living standards have been greatly improved. However, the ensuing environmental pollution problems should not be underestimated. The production and domestic waste production is increasing day by day, and some cities have also experienced serious environmental problems such as garbage siege. Therefore, the efficient and low-pollution treatment of urban domestic waste has a greater social impact , economic and environmental benefits. Currently, there are three commonly used methods of urban waste disposal: composting, landfilling and incineration. Compared with the previous two garbage disposal methods, the garbage incineration met...

AI Technical Summary

Problems solved by technology

[0003] Compared with foreign countries, my country's waste incineration technology has lagged behind for decades, and boiler equipment and combustion technology are relatively backward. In order to solve the problems of energy shortage and waste pollution, more foreign waste incineration equipment has been imported, but the operation and management of boilers The technology still uses the relevant technology in our country, and the garbage in our country has basically not been sorted, and the calorific value of the garbage varies greatly. This kind of backward technology in management and garbage classification is extremely unfavorable for the safe and stable operation of the garbage incinerator

[0004] In recent years, my country has frequently used high-parameter, large-capacity waste incineration power generation units, and the operating conditions in the furnace have become worse and worse. As mentioned above, due to operation management, unstable heat value of waste, and imperfect development of water-cooled wall materials , can not meet the requirements of the explosion-proof tube for incinerator operation, so the water-cooled wall tube burst accidents of waste incinerator frequently occur

[0005] Explosion of the water wall of the garbage incinerator may lead to fire extinguishing in the furnace and even shutdown of the boiler. In severe cases, it may also lead to a boiler explosion accident, resulting in casualties and a series of adverse social, economic, and personal hazards.

[0006] The specific reason is that the highly corrosive gases and chlorides and sulfates contained in the garbage and produced by combustion will cause serious damage to the metal pipe wall on the heating surface at high temperatures; the furnace contains more reducing atmosphere and The operating temperature in the furnace is too high, etc.

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