Flue gas outlet structure of glass kiln

Abstract

The invention relates to a flue gas outlet structure of a glass kiln. The flue gas outlet structure comprises a flue (1-2) and a flue gas pipe (3-1), wherein the flue (1-2) penetrates through a kiln wall body (1-1) from inside to outside; the flue gas pipe (3-1) is positioned outside the kiln wall body (1-1); the adjacent end faces of the flue (1-2) and the flue gas pipe (3-1) are hermetically connected through an expansion ring (2-1) and can realize fluid communication; and the expansion ring (2-1) is made from a material which satisfies the following conditions: the heat resistance temperature is 1260 DEG C or above, and the 24-h linear shrinkage rate at 1000 DEG C is not larger than 1.3%. The flue gas outlet structure of the glass kiln, provided by the invention, is provided with the expansion ring for connecting the flue with the flue gas pipe, thereby effectively preventing extrusion cracking or hogging deformation, caused by thermal expansion, of the flue and the flue gas pipe.

Description

Technical field [0001] The present disclosure relates to the technical field of glass preparation, in particular to a glass furnace flue gas outlet structure. Background technique [0002] The temperature of the flue gas (exhaust gas) produced by the combustion of fuel in the glass kiln is about 1200°C. With the negative pressure of the flue gas, the flue gas is continuously discharged to the atmosphere through the brick flue of the kiln. The traditional flue extends from the inside of the kiln wall to the outside to transport the flue gas and is built with bricks, and the flue is integrated with the kiln wall. The connection between the flue and the kiln wall is the flue gas outlet. The flue gas temperature is the highest at this location, so the expansion of the flue changes the most, and because the flue and the kiln wall are built as a whole, the expansion is very large. It is difficult to be relieved and consumed, and the flue is prone to squeeze or arch and deform from th...

AI Technical Summary

Problems solved by technology

The connection between the flue and the kiln wall is the flue gas outlet, where the temperature of the flue gas is the highest, so the expansion of the flue changes the most. It is difficult to be relieved and consumed, and the flue is prone to cracking or arching deformation from the inside to the outside

Therefore, every 15-20 days when the temperature of the glass kiln is raised, it is necessary to send inspection personnel to inspect and monitor the mouth of the flue, and at the same time control the heating rate of the glass kiln to prevent the flue from cracks or even cracks due to excessive expansion. collapse, the method is laborious and dangerous

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