SU775054A1 - Method of glass smelting - Google Patents

Description

The invention relates to the construction and building materials industry, in particular to the technology of glass welding in a glass-melting bath furnace. There is a known method of cooking in a glass-melting bath furnace, which includes the supply and combustion of gas in several temperature zones with the creation of a zone of maximum temperature, the maximum temperature zone being pushed forward towards the working end of the furnace, so that 1.25-1.5 times l. A disadvantage of the known method of glass melting is the low thermal load in the charge zone, and the reduced productivity of the glass melting furnace is associated with this. Also known is the closest to the invention in its technical essence and the achieved result. A method of glass melting in a glass-melting bath furnace, including supplying the charge, melting it, clarifying and homogenizing the melt during gas combustion, creating at least one maximum heat load in the clean area mirrors 2. The disadvantages of the known method of glass melting include: a short turnaround time for a glass-melting furnace associated with the effect of significant heat loads on the loading pocket refractories, side walls and roof, as well as the driving force of the charge in the near-wall zone; reduced furnace capacity throughout the campaign due to the need to reduce heat loads at the end of the campaign. The purpose of the invention is to increase productivity and extend the turnaround time of the furnace. This goal is achieved due to the fact that in the method of glass melting in a glass-melting bath furnace, which includes supplying the charge, melting it, clarifying and homogenizing the melt during gas combustion with creating at least one maximum thermal load in the area of the clean mirror, while reducing the thickness The stoves in the maximal temperatre zone are 7–12 times the last shifted by a distance of 0.8-1.2 1 / M, where L is the length of the heated part of the furnace, N is the number of burner pairs.

Example, In the regenerative glass bath E) by the BVVS / heated family furnace, the burner pairs on a mixture of 63% of the charge and 27% of the glass were boiled glass of the following composition, wt%:

72.6 1.6 OD 7.9 3.6

13.4 0.8

The furnace topside temperature between the III -tv Pairs of the burners was between iV-V1505 ° C.

In one embodiment, along the length in the glass-melting bath of the furnace, two maxima of thermal loads were created with a total gas consumption per furnace of 3650.

The distribution of heat loads over the burners in this variant before the maximum mixing and after its displacement (the thickness of the furnace masonry at the displacement of the maximum temperature zone was 30 mm, which was 8.4 times less than the original thickness) is shown in Table. one

For the first 29 months, the glass-melting bath furnace worked with a steeper temperature curve (the zone of maximum temperatures fell on iv of a pair of burners). At the same time, a large heat load took place in the charge zone.

The residual thickness of the masonry, mm, on the right side of the furnace between the burners for this period is shown in table 2.

After 29 months, the zone of maximum temperatures was shifted by 3.7 m along the charge, the shift being 0.98 L / N (L-length of the heated part of the furnace - 26.5 mm, N - number of burner pairs - 7).

When setting the zone of maximum temperatures for U a couple of burners, the boundary of the foam zone - a clean mirror practically did not change, since in this case the zone decreased, covered with cooking foam, which reduced the overheating of the roof.

The boundaries of the charge zone at the primary location of the maximum temperature were at the beginning of the third pair of burners, and when transferring the maximum to the V pair of burners - at the end of the 1st pair. This reduced the impact of the heaps on the stove's surroundings.

Due to the fact that the transfer of maximum temperatures does not reduce the amount of heat loads, but only to redistribute them, a constant, more stable removal of glass mass is ensured, which ensures an increase in productivity by 6%.

Table 1

Gm

250 180140130

250.150120100

11-111

250 1109080

I I I-IV

250 115110110

IV-V

250 200170160

V-VI

250 220200190

V I - I I

table 2

10080805040

7060604040

6050504030

8080805050

130130130120100

170170170140130

Claims (2)

Invention Formula The method of cooking glass in a glassy oven furnace, which includes supplying the charge, melting it, clarifying and homogenizing the melt during gas combustion, creating at least one maximum heat load in the area of the clean mirror, characterized in that kilns and extending the service life of the kiln by reducing the eroding of the refractory, by reducing the thickness of the kiln masonry by 7-12 times in the zone of maximum heat loads, the latter displaces an additional distance of 0.81, 2 L / N, where L is the length of the heated part of the kiln, - the number of pairs of sorrow approx. Sources of information taken into account in examination 1, U.S. Trent. No. 3928014, 65-136, 1975. 2. US patent number 3265485, 65-134, 1966.