SU1816744A1 - Straight-line glass-melting furnace - Google Patents

Description

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

The aim of the invention is to increase the specific removal and utilization of glass, saving fuel and energy resources, refractory and improving the quality of glass.

The drawing shows a glass melting furnace, General view.

The optimal ratio of the volume of the overheating zone and the volume of the buried duct is the following ratio (1-26): (0.01-1X5-1); (4: 1).

If we accept the limit of the ratio of the volume of the superheat zone to the volume of the duct and the limit of the ratio of the depth of the superheat zone to the depth of the duct above the specified value, then in the direct-flow glass melting furnace there will be a significant excess of the glass melt temperature above the required one, the duct in this case will not provide its main function - lowering the temperature to the required for working out.

If we accept the limit of the ratio of the volume of the overheating zone to the volume of the duct and the limit of the ratio of the depth of the overheating zone to the depth of the duct below this, that is, correspondingly less than (1-26): (0.01-1) and (5-1); (4-1), then the volume of the overheating zone will be small and will provide the necessary heating of the glass melt.

The consequence of this phenomenon will be lack of fusion, heterogeneous glass melt, difficulty in the clarification process and the temperature of the glass melt at the production will be lower than required.

This phenomenon will complicate the molding process and, in addition to the above, will lead to additional defects in the molding of glass products. Thus, only the accepted ratio of the overheating zone and the duct will ensure the fulfillment of the task, namely: increasing the specific removal, saving fuel and energy resources, saving refractory products, improving product quality.

An example of pilot industrial cooking with a ratio of element sizes is presented in the table.

The furnace operates as follows. Through the loading pocket 1 (Fig. 1), the charge enters the brewing pool 2, where the heaps of the mixture are melted as a result of heat radiation from the torch. The dissolution of quartz occurs in the cooking zone, with intensive drilling of the glass melt, by supplying compressed air through bubbler nozzles 3.

1816744 A1

The welded but rather viscous and relatively cold glass melt enters the overheating zone 4, where it is additionally heated. This ensures a decrease in the viscosity of the melt, as a result of which the processes of homogenization and clarification will be easier to proceed.

Heated to a sufficiently high temperature, the molten glass enters the pool of the hemogenization zone 5, where it is averaged. Qualitative averaging of the melt in the homogenization zone is facilitated by intensive sparging with compressed air entering through the nozzles 3. Welded homogeneous but not clarified glass melt enters the clarification zone 6, where it is rapidly clarified. Intensive clarification contributes to the high temperature of the melt. This temperature regime is ensured by heating the melt in the overheating zone and the relatively small depth of the clarification zone. The welded, homogeneous, clarified glass melt is fed through the buried duct 7 into the production channel 8. The buried duct 7 is designed in such a way that provides the necessary temperature reduction to the production. Its tight relationship with the dimensions of the overheating zone determines the minimum consumption of refractory on its structural elements and allows it to precisely withstand the temperature regime set for production. The evacuation of flue gases is carried out through the flue channel 10. The combustion mode in the furnace is maintained as a result of the installation of burners 9 in the side walls of the furnace 9. The authors developed a direct-flow furnace design in accordance with this design solution, with a capacity of 160 t / n s to produce silicate block.

Claims (1)

Formula of the invention A straight-through glass melting furnace including an overheating zone and a recessed duct, characterized in that, 20, in order to increase the specific removal and utilization of the glass melt, save fuel and energy resources, refractory and improve the quality of the glass melt, the ratio of the volumes of the overheating zone and the recessed duct is ( 1-26): (0.01-1), and the ratio of the depths of the overheating zone and the duct is (5-1): (4-1). №№ Marginal relationship The ratio of the volume of the overheating zone to the volume of the buried duct m ³ Relative 6IN 3OI heating to duct 1 Lower eleven 0.015: 0.1 14 2 upper limit 26: 0.01 0.4: 0.001 5: 1 3 limit average 13: 0.5 0.2: 0.05 3: 2.5 4 Outrageous lower value 0.9: 1 0.014: 0.1 0.9: 4 the depth of the clown, m ³ Expected Economic Effect increase in specific removal saving of fuel and energy resources glass quality improvement • increase CIS 0.033: 0.1 ( Reached 0.25: 0.04 Also 0.15: 0.1 1 3.03: 0.16 Not reached Table continuation p / p Marginal relationship The ratio of the volume of the overheating zone to the volume of the buried duct m ³ The ratio of the depth of the overheating zone to the depth of the duct, m ³ Expected Economic Effect increase in specific removal saving of fuel and energy resources glass quality improvement increase CIS 5 Boundary Upper Value 27 .0.01 0.41:: 0.001 6: 1 0.3: 0.04 Also