SU1411300A1 - Direct-flow glassmaking furnace - Google Patents

Description

(21) 4188596 / 29-33

(22) 12/05/86

(46) 07.23.88. Bul Number 27

(71) Smolensk Production Association for the Production of Glass Containers

(72) N.A. Kabanov, E.V.Paushkin, I.E.Bogolyubov, G.P.Kulnev, L.V.Prokopovich, A.M.Kuznetsov, V.N.Kiselev, B.A.Manannikov , N.N. Veselovsky and E.K.Popov (53) 666.1.031.222 (088.8)

(56) USSR Author's Certificate No. 874673, cl. From 03 to 05/04, 1979.

 USSR Author's Certificate No. 1162755, cl. From 03 To 5/04, 1982.

USSR author's certificate number 1286541, cl. From 03 To 5/04, 1982.

54) DIRECT CURRENT GLASS-FURNACE OVEN

(57) The invention relates to glass industry, in particular, to direct-flow glass melting furnaces,

 on which all types of glass can be produced, except quartz. The purpose of the invention is to increase the productivity of the furnace and save fuel. A straight glass furnace includes cooking zones 3 and homogenization 5 with burners 9, reaction-averaging cells 7 and a clarification zone 6 with burners 13 installed in the end wall at an angle of 8-30 to the horizontal. The furnace has an overflow threshold of 10, which is filled at the beginning of the lightening zone. The length of the threshold is related to the distance from the circumference to the bottom of the threshold and to the length of the lightening zone as (1-1.5) :( O, 15-0.2) :( 3.5-4.0). This allows an increase in the specific glass removal by 15–20% and a reduction in fuel consumption by 20–30%. 1 il.,

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The invention relates to the glass industry and is intended for cooking all types of glass except quartz.

The purpose of the invention is to increase the productivity of the furnace and save fuel.

The drawing shows a glass furnace, a general view.

The continuous glass furnace contains a loading pocket 1, silicate-forming zones 2, boiling 3, overheating 4, homogenizing 5 and clarifying 6, reactionally averaging cells 7 with bubbling nozzles 8 located in the homogenizing and cooking zones. Heating in the zones of cooking and homogenization is carried out by means of a slab 9 located in the side walls of the basin.

Overflow threshold 10 is placed between the homogenization and clarification zones at the beginning of the clarification zone. The glass mass enters the duct 11 through duct 12. The illumination zone is heated by inclined burners 13 located in the end wall above the duct at an angle of 8-30 to the horizontal .

The direct glass furnace works as follows.

The mixture through the loading pocket 1 enters the silicate-forming zone 2, where it melts. Then the melt enters the cooking zone 3 and with forced mixing with compressed air coming through. nozzle 8, the process of intensive dissolution of grains; quartz. Next, the melt enters the overheating zone 4 where it is additionally heated in a thin layer in order to reduce its viscosity and prepare for averaging in the homogenization zone 5. After Compounding, as well as glass formation, the melt proceeds with forced agitation with compressed air entering through the bubbling nozzles 8.

The welded but not clarified melt through the overflow threshold 10 enters the clarification zone 6, made in the form of a tray. Overflow poro

designed to fit

the course of the clarification process. Its main task is to lift the bubbles to the surface of the glass melt, where they are in a thin layer without difficulty

0

0 5

0

five

degassed. As a result, the further maintenance of the clarification process will require much less heat, since all the main gas inclusions are emitted in a thin layer on the overflow threshold 10. The glass mass entering the clarifying tray mainly contains small gas inclusions, which occur during its movement a lightening tray or a dredged duct 12,

When designing the overflow threshold 10, dimensions are chosen that are defined by the following ratios: the overflow threshold length refers to the distance from the circumference to the bottom of the threshold and to the length of the illuminating tray as (1-1.5) :( 0.15-2.2): (3.5-4).

If the length of the overflow threshold is less than the specified limit, then its area is insufficient to isolate the main part of gas inclusions.

If the length of the overflow threshold is greater than the specified limit, this does not have a negative effect on the clarification of the glass mass, however, this leads to an additional consumption of expensive zirconium refractory.

If the distance from the circumference to the bottom of the threshold is less than that specified in the section, then there is no reliable degassing of gas inclusions due to a sufficiently large layer of melt above the threshold.

If the distance from the circumference to the bottom of the threshold is greater than indicated in the ratio, then the bottom of the overflow threshold quickly burns out, since the layer of molten glass is extremely small. )

The heating of the clarification zone is carried out by means of burners 1 installed in the end wall above the duct at an angle of 8-30 ° to the horizontal.

When the angle of inclination of the burners is less than 8, the flatness of the torch on the glass mass in the clarification zone is not achieved, and if the angle of inclination on the end torch is greater than 30 °, then the center of the torch core is in the middle or end of the illuminating tray. Thus, in these areas, the zones of clarification create maximum temperatures, and not at the beginning of the clarification tray, which leads to the secondary heating of the glass mass and the formation of new bubbles. The welded and clarified glass melt through the buried duct 12 enters the production part 11. Evacuation of flue gases is carried out through the flue gas outlet

The table shows examples of the glass furnace, and the data of the positive effect are given in Comparison with the well-known furnace.

Thus, the proposed glass direct-flow furnace makes it possible to significantly increase productivity, increase specific removal and reduce fuel consumption.

lower limit

Upper limit

Average value

Beyond the lower value

Beyond the upper value

1: 3.5: 0.158

1.5: 4: 0.230

1.25: 3.75: 0.1719

0.9: 3: 0.15

1.6: 4.2: 0.335

Compiled N. Borisova Editor I. Derbak Tehred M. Khodanych Proofreader L. Patay

Order 3617/22

Circulation 425

VNIIGSh of the USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Claims (1)

Invention Formula A continuous glass-melting furnace, including cooking and homogenizing zones with burners and a clarification zone with a threshold at its beginning and burners installed at an angle to the horizontal, characterized in that, in order to increase the furnace's performance and fuel economy, the ratio of threshold length to distance from the circumferences to the bottom of the threshold and to the length of the lightening zone are respectively (1-1.5) ::: (0.15-0.2) :( 3.5-4.0), and the burner c. the clarification zone is installed in the end wall at an angle of 8-30 ° to the horizontal. 15 17 20 18 20 15 20 30 25 Decrease in product quality, productivity does not increase, there is no increase in specific removal, there is no fuel economy. Subscription