RU2842851C1 - Device for forced cooling of enclosures for glass melting furnace - Google Patents

Abstract

FIELD: glass.

SUBSTANCE: invention relates to production of glass in continuous-action glass-melting furnaces and can be used for cooling refractory masonry of a glass-melting furnace at the melt mirror level. Device for forced cooling of enclosures for glass melting furnace is located at boundary point of three phases – refractory structure, melt, gas space. Device at the level of molten metal surface includes forcedly cooled structure for formation of cooled hardened glass melt from glass melt, which consists of supply branch pipe, discharge branch pipe and water-cooled panels. Panels contain parallel vertical pipes connected by a bridge. Tenons are arranged on tube surface to lock refractory packing filling free space from cooled structure to refractory structure edge.

EFFECT: reduced frequency of repair works and increased service life of refractory enclosures.

1 cl, 5 dwg

Description

Field of technology to which the invention relates

The invention relates to the production of glass in continuous glass melting furnaces and can be used for cooling the refractory lining of a glass melting furnace at the level of the melt mirror.

State of the art

A method for cooling the pinch connecting the melting and working pools of a glass melting furnace is known, according to which cold water from the collector is directed through the feed pipe into the hollow partition of the box. The main part of the water passes through the gap and enters the space between the partition and the heat-absorbing walls, which are tightly adjacent to the refractory masonry of the glass melting furnace. The waste water is then drained into the collecting collector through the pipe. The main wear on the surface is observed at the level of the melt mirror [SU 1318554 A2, IPC C03B 5/44, published 23.06.87].

The disadvantage of this technical solution is the reduction in the operating time of the glass furnace due to the cooling of the constriction.

The closest in technical essence to the claimed invention is a device according to which the supply of fan air from the collector is carried out through slot nozzles equipped with a perforated plate with a pitch between the holes of 1.5-3 hole diameters and installed from the refractory masonry of the furnace pool at a distance of 1-8 hole diameters [SU 1041525 A, IPC C03B 5/44, published 15.09.83].

The disadvantages of this technical solution are the low efficiency of the nozzle due to the use of slot nozzles with

perforated plate, which becomes clogged with pollutants, as well as wear of the refractory barrier at the melt level, due to chemical and physical impact, the refractory becomes thinner.

Disclosure of the essence of the invention

The technical objective of the claimed invention is to extend the service life of a glass melting furnace.

The technical result consists in reducing the frequency of repair work and increasing the service life of fireproof fences.

This is achieved by a device for forced cooling of refractory barriers for a glass melting furnace, located at the point of separation of three phases - refractory barrier, melt, gas space, according to the invention, at the level of the melt mirror contains a forced-cooled structure for forming cooled solidified glass mass from the glass melt, consisting of a feed pipe, a discharge pipe and water-cooled panels containing parallel vertical pipes connected by a jumper, wherein on the surface of the pipes there are spikes made with the possibility of fixing refractory packing, filling the free space from the cooled structure to the edge of the refractory barrier.

Brief description of the drawings

The essence of the proposed invention is explained by drawings.

Fig. 1 shows a sketch of a device for cooling the refractory enclosure of a glass melting furnace at the level of the melt mirror.

Fig. 2 shows a longitudinal section taking into account the proposed technical solution.

Fig. 3 shows a front view of a fragment of a water-cooled panel.

Fig. 4 shows a top view of a fragment of a water-cooled panel.

Fig. 5 shows an isometric view of a fragment of a water-cooled panel.

In Fig. 1–5 the following designations are used:

1 – fireproof fence;

2 – melt;

3 – gas space;

4 – melt mirror level;

5 – feed pipe;

6 – water-cooled pipe;

7 – outlet pipe;

8 – spikes;

9 – fire-resistant packing;

10 – glass mass;

11 – jumper.

Implementation of the invention

A device for forced cooling of refractory barriers 1 for a glass melting furnace, located at the dividing point of three phases - refractory barrier 1, melt 2, gas space 3, where the lining wears out especially intensively, at the level of the melt mirror 4 contains a forced-cooled structure for forming cooled solidified glass mass 10 from the glass melt 2, consisting of a feed pipe 5, a discharge pipe 7 and water-cooled panels 50-300 mm high (depending on the level of the melt mirror 4), containing parallel vertical water-cooled pipes 6 connected by a jumper 11, wherein on the surface of the pipes 6 there are spikes 8, for example, of a cylindrical shape, attached, for example, by welding, made with the possibility of fixing refractory packing 9, for example, the material of the refractory packing 9 Bakor-41, filling the free space from cooled structure to the edge of the fireproof fence 1.

The device for forced cooling of refractory barriers 1 in a glass melting furnace operates as follows.

Refractory barriers 1 of the melting basin of the glass melting furnace are exposed to the physical and chemical action of the melt 2, contact with which causes corrosion of the materials. At high temperatures, refractory barriers 1 interact with the components of the glass mass 10, forming new compounds and dissolving parts of the walls of the glass melting furnace. Fig. 1 shows a sketch of a device for cooling the refractory barrier 1 of the glass melting furnace (Fig. 2, remote element A) at the level of the melt mirror 4. During the cooling of the working fluid, cold water enters through the feed pipe 5 into the water-cooled pipe 6. The cooled water, after use, is discharged through the outlet pipe 7. The design of the water supply and outlet does not change the essence of the technical solution. Cold water ensures a significant heat flow removal from melt 2 through refractory packing 9, which leads to melt 2 growing and then to its solidification – thereby forming a solidified cooled glass mass 10. Refractory packing 9 ensures adhesion to the solidified glass mass 10 due to the adhesion of glass mass 10 to refractory packing 9, which, in turn, prevents periodic peeling off of individual sections of the coating. At the same time, due to the constant cooling of refractory enclosure 1, the formed layer of solidified glass mass 10 does not change its thickness.

Fig. 3, 4 and 5 show a fragment of a water-cooled panel with studs 8, the design of which does not change the essence of this solution, studs 8 impart additional mechanical strength to the refractory packing 9, and also have increased thermal conductivity. This property reduces the thermal resistance of the packing 9, which leads to more efficient heat dissipation and helps to reduce the temperature of the outer surface of the packing layer 9.

Thus, the use of the invention makes it possible to reduce the frequency of repair work and increase the service life of refractory barriers 1 by preventing corrosion, using water-cooled panels at the level of the melt mirror 4, the result of such cooling on the inner surface of refractory barriers 1 is the formation of a wall layer of constant thickness of cooled solidified glass mass 10.

Claims (1)

A device for forced cooling of refractory barriers in a glass melting furnace, located at the point of separation of three phases - refractory barrier, melt, gas space, characterized in that at the level of the melt mirror it contains a forced-cooled structure for forming a cooled solidified glass mass from the glass melt, consisting of a feed pipe, a discharge pipe and water-cooled panels containing parallel vertical pipes connected by a jumper, wherein on the surface of the pipes there are spikes made with the possibility of fixing the refractory packing, filling the free space from the cooled structure to the edge of the refractory barrier.