Air cooling combustor

Abstract

The invention relates to an air cooling combustor. The air cooling combustor is characterized by being mainly composed of an ignition bin assembly (1), a diffusion cone assembly (2), an inner secondary air assembly (3), an outer secondary air assembly (4), a pulverized coal pipe assembly (5) and a secondary air cylinder (6), wherein the ignition bin assembly (1), the inner secondary air assembly (3) and the outer secondary air assembly (4) are sequentially connected together from left to right to form a combustor body; and the diffusion cone assembly (2) and the pulverized coal pipe assembly (5) are arranged in the combustor body in a penetrating mode, and the secondary air cylinder (6) is arranged above the combustor body. According to the air cooling combustor, the reasonable structuraldesign is achieved, secondary air is divided into inner secondary air and outer secondary air, therefore, the combustor can be cooled only by means of air, a water circulation cooling system does notneed to be arranged, then the structure of the combustor is simpler, moreover, the size is reduced by 50% or more, and the production cost is remarkably reduced.

Description

technical field [0001] The invention relates to a burner in the technical field of pulverized coal industrial boiler burners, in particular to an air-cooled burner which uses air to cool the burner. Background technique [0002] The burner is one of the core equipment of the pulverized coal industrial boiler. The pulverized coal is ignited inside the burner, and then is blown into the furnace by the combustion-supporting air for full combustion. Therefore, the burner plays the role of igniting the pulverized coal and organizing the pulverized coal to stabilize The effect of burning. The pulverized coal burns violently inside the burner, and the temperature inside the burner can reach above 800°C. Therefore, the cooling system is required to quickly remove the heat from the burner, so as to ensure the stable operation of the burner. At present, there are two main methods to reduce the temperature of the burner: one is to increase the volume of the burner, and the other is to...

AI Technical Summary

Problems solved by technology

However, these two methods have the following disadvantages: (1) enlarging the volume of the burner will not only cause waste of materials, but also easily cause ignition difficulties and unstable flames

(2) Arranging the water circulation cooling system outside the burner not only causes the structure of the burner to be complicated, but also for some structures of the burner, it is difficult to arrange the water circulation cooling system

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