Crown structure of large-scale oxygen-fuel combustion glass kiln

Abstract

The utility model discloses a crown structure of a large-scale oxygen-fuel combustion glass kiln. The crown structure comprises a front main crown and a rear main crown, wherein the front main crown and the rear main crown are respectively composed of a plurality of main crown bricks, each ring of main crown bricks of the front main crown is formed by sequentially arranging crown bricks, flow guide bricks are arranged on two sides of each crown brick, springer bricks are arranged on two sides of each flow guide brick, the rear main crown is composed of a plurality of rings of main crown bricks, and each ring of main crown bricks is formed by sequentially arranging a plurality of single crown bricks. By optimizing crown material distribution and reasonably arranging the crown structure, capital can be saved, the overall safety and economy of the kiln can be improved, corrosion of refractory materials can be reduced, the service life of the kiln can be prolonged, the sealing effect of the kiln can be improved, the quality of a baking kiln can be improved, and the electric smelting crown structure can be used in the second kiln period.

Description

technical field [0001] The invention relates to the technical field of glass kilns, in particular to the large-scale structure of a large-scale oxy-fuel combustion glass kiln. Background technique [0002] In the oxy-fuel furnace, oxygen is used instead of air for combustion. Compared with air combustion in the oxy-fuel combustion process, about 79% of the nitrogen in the air no longer participates in the combustion, and there is no nitrogen in the flue gas, saving energy and reducing consumption, reducing NO X Emissions, oxy-fuel combustion does not need to change the flame, the flame is stable, the flame temperature is high, and the fuel is completely burned, which is beneficial to the melting of glass and the increase of output. [0003] After adopting the oxy-fuel combustion technology, the gas composition in the kiln changes significantly, and the water vapor content in the combustion product can be as high as 50%. The water vapor will react with the sodium oxide in th...

AI Technical Summary

Problems solved by technology

Some of the existing oxy-fuel combustion glass furnaces use high-quality silica bricks. Although the refractoriness has been improved to a certain extent, the nature of the silica bricks determines that they are not suitable for large alkali steam atmospheres, which will accelerate the erosion of silica bricks. , it is easy to form perforation and reduce the life of the dome, and there are certain hidden dangers in the safety of the kiln

However, after using fused fused refractory materials such as αβ alumina bricks, it was not possible to set up a matching expansion joint structure and insulation structure, and the fused material was not fully considered. The use and energy-saving effect of the second kiln period of Dalong

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