Hanging heat accumulator for improving radiant tube temperature uniformity

Abstract

In order to overcome shortcomings in the prior art, the invention provides a hanging heat accumulator for improving the radiant tube temperature uniformity. The hanging heat accumulator for improving the radiant tube temperature uniformity comprises an upper portion heat accumulator, a lower portion heat accumulator and a hanging bracket clamping ring, wherein the middle portion of the upper portion heat accumulator and the middle portion of the lower portion heat accumulator are provided with grooves corresponding to radiant tubes in shape in the axial directions of the radiant tubes, an internal space for containing the radiant tubes is formed by the grooves of the upper portion heat accumulator and the lower portion heat accumulator, and the radiant tubes are wrapped with the upper portion heat accumulator and the lower portion heat accumulator in an oppositely-opened manner. According to the hanging heat accumulator, lowest-temperature zones of the radiant tubes are wrapped with the pair of oppositely-opened heat accumulators, a secondary heat source is additionally arranged with the price of sacrificing a small section of radiating areas, the temperature nonuniformity of the radiant tubes in the length direction is offset, and the temperature of the radiant tubes in the length direction is uniform.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a heat storage body. Background technique [0002] The radiant tube burner has the characteristics of flame insulation heating, because it will not affect the atmosphere of the furnace energy, and radiant heating can improve the uniformity of heating. If the radiant tube is combined with the regenerative burner, it can also form a regenerative radiation Tube burners for CO control 2 , NO x and other pollutant emissions and energy saving have obvious advantages. At present, the main radiant tubes used are U-shaped and W-shaped radiant tubes, which are widely used in chemical industry, metallurgy, building materials and other fields. Since the heat is continuously transferred to the radiant tube during the flow of the flue gas in the radiant tube, the temperature of the radiant tube is lower as it gets closer to the end of the radiant tube. The heating capacity ...

AI Technical Summary

Problems solved by technology

However, in actual production practice, the length of the radiant tube can reach two meters (including the bend section, the total length is more than four meters), or even longer; the working principle of the radiant tube is that the high-temperature smoke discharged from the burner The gas flows inside the radiant tube and transfers heat from the flue gas to the inner wall of the radiant tube by convection, which means that the flue gas flow is a process of continuously reducing its own heat, that is, there is a temperature gradient along the length of the radiant tube ;The temperature distribution trend of the radiant tube is the highest near the burner and the lowest at the bend, so there is a certain temperature inhomogeneity

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