SU914509A1 - Glass melting tank furnace - Google Patents

Description

The invention relates to devices for the production of glass, and more specifically to the design of a glass furnace bath, and can be widely used in the glass industry and the building materials industry.

Famous bathroom "glass furnace of direct heating containing duct-connected cooking and production pools, the first of which has a heated burner and unheated zones with a transverse refractory partition (1).

However, the design of such a furnace does not significantly increase the heat transfer from the flue gases to the glass mass due to the significant removal of torches from the glass mass mirror in the heated zone of the furnace due to a decrease in the convective component of the complex heat exchange by 10–15% of the total flow at 1500–1450 °. At lower temperatures in the area of Ieotepli2

The value of convective heat exchange due to the insignificant length of the transverse refractory partition is underestimated by 1520%. In both zones it is difficult to have an increase in furnace productivity and an improvement in the quality of the glass melt.

The purpose of the invention is to improve the performance of the furnace, improving the quality of glass and reducing the specific fuel consumption.

This goal is achieved by the fact that in a glass furnace furnace containing cooking and workout pools connected by a duct, the first of which is made with heated and unheated zones, the heated zone is fenced, starting from the flow, with an inclined arch with a tilt angle of 2 - 6 ° to the horizontal and distance in the area of the channel from the arch to the glass mass mirror, equal to 1/20 - 1 / 5.5 width of the pool, while nez 9

the heated zone is made with a reduced arch at a distance of 1/5 1 / 8.5 of the total pool length and with a distance from the arch to the glass mass mirror equal to 1.1-2.1 of the same distance from the channel ..

With increasing distance from the top of the arch to the glass mass mirror, i.e. at a distance of 1/4 the width of the pool, the convective component of heat exchange decreases and the quality of glass melts, as the kinetic energy of the gas-air jet of the torch is weakened and no intense clarification of the glass mass on the wave-shaped surface of the mass flow mirror in the flow region is created. With a decrease in the distance from the arch to the glass mass mirror, i.e. at a distance of 1 / 22-1 / 25 the width of the pool, it is necessary to spend considerable energy on blowing in combustion air, the laying of the roof flares up, and the glass mass is polluted with refractory material.

The best indicators of convective heat transfer from the torch to the glass melt and its clarification on a wave-like surface in the flow area will be at a distance of 1/12 the width of the basin. '

When the roof is inclined less than 2 °, the ceiling of the reflected flame flame energy from the glass mass mirror is observed and the gas phase in the glass mass increases from the intense effect of the flame on the melt, and $ 5

when the roof is inclined more than 6 °, the convective component of heat exchange decreases and the clarification on the insufficiently undulating surface of the glass melt in the duct region deteriorates. ⁴⁰ The best indicators of convective heat transfer from the torch to the glass melt and its clarification will be when the roof is inclined at 4 °.

Figure 1 shows a furnace, longitudinal ⁴⁵ section; on Fig.2 - section aa in figure 1.

A glass melting furnace includes a brewhouse 1 and a worktop 2 pools. The cooking basin is equipped with a 50-sided roof 3 with burners 4, the loading window 5 and the flue gas gap 6 are located across the entire width between the reduced section of the roof 7 and the end- And backfilling wall.

The device works as follows.

4509 4

Charge. Load> into the glass-melting furnace furnace through the loading window 5, the charge enters pool 1, where intensive cooking takes place in zone _{3 of the} reduced section of the roof 7 in countercurrent with the movement of flue gases introduced from the furnace through the slot 6 across the entire width of the reduced section of the roof and end backfill wall. The flow from walking flue gases is as close as possible in the area of the inclined roof 3, heated by burners 4, which causes intense homogenization and clarification of the glass mass, improves heat transfer due to the convective component, and summing all the flares of the slope outlet in the lower section of the roof of the furnace causes their turbulization and improves heat50 exchange in the cooking zone of glass melt.

The increase in the total heat flux from gases to glass melt allows increasing the furnace productivity by 15-17%, improving the quality and increasing the purity of the finished glass mass, increasing the yield of usable products by 15%, increasing the efficiency by 15%.

Claims (1)

Claim A glass-melting direct-heating furnace containing duct-connected cooking and production pools, the first of which is made with heated and unheated zones, characterized in that, in order to increase productivity, reduce specific fuel consumption, improve the quality of glass melt, the heated zone is fenced, starting from the duct , an inclined arch with an angle of inclination of 2 - 6 ° to the horizontal and a distance in the flow area from the roof to the glass mass mirror equal to 1 / 20-1 / 5.5 of the basin width, while the unheated zone is made reduced vault at a distance of 1 / 5-1 / 8.5 and the total length of the pool with the distance from the roof to the mirror glass, the same distance equal to 1,1-2,1 at duct.