A top-fired hot blast stove burner

Abstract

The invention provides a technical scheme of a top combustion hot blast stove combustor comprising a furnace shell, wherein the inner side of the furnace shell is provided with a refractory masonry; the furnace shell and the refractory masonry are formed into a combustion space composed of three space segments with different shapes at the upper, middle and lower ends, wherein the upper end is provided with a spherical combustion chamber segment, the middle is provided with a straight combustion chamber segment, and the lower end is provided with a tapered combustion chamber segment; the three space segments are communicated with each other; the straight combustion chamber segment is provided with a combustion air inlet, a combustion air nozzle, an annular combustion air channel, a coal gas inlet, a coal gas nozzle, an annular coal gas channel and an annular mixed channel; the inner side of the straight combustion chamber segment is provided with an annular retaining wall. According to the scheme, the top combustion hot blast stove combustor is small in whole occupied space, high in combustion temperature, very suitable for modifying hot blast stove and particularly suitable for changing an internal combustion hot blast stove into a top combustion hot blast stove. By using the top combustion hot blast stove combustor, the modification expense can be reduced, and most importantly, the blast temperature of the hot blast stove can be increased.

Description

technical field [0001] The invention relates to a hot blast stove, in particular to a top-combustion hot blast stove burner. Background technique [0002] Metallurgy, chemical industry, oil refining and other industries all need to use hot blast stoves, especially in blast furnace ironmaking systems, hot blast stoves are indispensable key equipment. With the continuous progress of hot blast stove technology, especially the Kalugin top-fired hot blast stove, due to its reasonable structure, relatively low investment, and high air temperature level, it has become more and more popular. However, some small and medium-sized blast furnaces in China are still using internal combustion hot blast stoves with low air temperature. If they are completely modified according to Kalugin hot blast stoves, they will be limited by the original site and space. Therefore, to a certain extent The transformation process of small and medium-sized blast furnace hot blast stoves has been greatly i...

AI Technical Summary

Problems solved by technology

However, some small and medium-sized blast furnaces in China are still using internal combustion hot blast stoves with low air temperature. If they are completely modified according to Kalugin hot blast stoves, they will be limited by the original site and space. Therefore, to a certain extent The progress of the transformation of small and medium-sized blast furnace hot blast stoves

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