SU1604756A1 - Method of heating glass-melting bath furnace - Google Patents

Abstract

The invention relates to industrial glassmaking and can be used in the production of sheet, architectural and construction, container and other types of glass on glass melting furnaces with a transverse direction of the flame and with a capacity of up to 200 tons / day. The purpose of the invention is to increase the production of glass, improve product quality and save fuel. When the furnace output varies by welded glass mass, the proportioning of fuel consumption per unit of time is produced on the burners of the zone occupied by the charge and cooking foam in a volume 2-3 times higher than the amount of fuel consumption per unit of time that is theoretically necessary for this change in furnace performance. Then, after a time interval of 0.2-1.2 times the transit time of the glass melt from the quill point to the end of the cooking basin, the fuel consumption on the burners of the clean glass zone in the volume of 0.2-1.7 is reversed fuel per unit of time theoretically necessary to proportion the fuel consumption for the glass melting process according to a given change in furnace productivity.

Description

The invention relates to the glass industry, in particular to glass-melting bath furnaces with the transverse direction of the flame of the production of sheet glass.

The aim of the invention is to increase the production of glass, improve product quality and save fuel.

The method of heating a glass-melting bath furnace with a transverse direction of the flame involves the proportioning of fuel consumption on the burners of the weld zone when changing the furnace output by the welded glass melt. Proportions of fuel consumption on burners of the weld zone of the furnace, when the furnace output varies by welded glass melt, are produced in a volume 2-3 times larger than the theoretically necessary for this change in furnace output volume of fuel consumption per unit time, then after a time interval of 0, 2-1.2 durations of the passing of the glass melt from the quarter point to the end of the cooking basin, the inverse proportioning of the fuel consumption on the burners of the clean grain zone is carried out glass mass

0s

ABOUT

s

h SL

DS

in the range of 0.2-1.7 fuel consumption per unit of time theoretically necessary for proportioning the fuel consumption to the glass melting process for a given change in furnace productivity.

The method of heating the furnace at the expense of a more intensive (in a volume of 2-3 times more than the necessary increase or decrease in fuel consumption for the glass melting process with a corresponding increase or decrease in furnace performance by welded glass mass) proportional to the fuel consumption on the burners in the weld zone of the charge almost eliminates the change in length the position of the cooking zone boundaries with an increase (or decrease) in the furnace output. The implementation, at a certain time interval, of the inverse proportioning of the fuel consumption on the burners of the clean mirror zone, preventing the inevitable in these conditions lowering of the temperature of the melt in the basin of the cooking part, especially in the area under the charge, stabilizes the thermal mode of the furnace and ensures the temperature the flow of glass and high technological uniformity of the latter. As a result, output increases and product quality improves - sheet glass. The reduction in fuel consumption during the glass melting process is provided in this case by a significant reduction in the unproductive expenditure of heat for overheating the melt while reducing the furnace performance on the welded glass mass (for example, if one of the tapes of the sheet glass production system breaks).

Example. The cooking basin is heated with five pairs of burners with a total gas consumption of 2400.

Gas distribution by burners,% of total fuel consumption: 1 pair of burners 22.0; 2 and 22.7; 3-23.7; 4 and 20.5; 5 and 11.1.

When the glass mass ribbon breaks on the VVS machine, the furnace output decreases by 24 tons / day (1 t / h), which is 15% of the working capacity of the furnace on the welded glass mass.

The theoretical amount of heat for cooking 1 kg of glass is 75 kcal (taking into account the use of reverse glass, equal to 20% of the welded glass mass) or 85 gas for cooking 1 ton of glass with a calorific value of fuel of 7900 kcal / m

To maintain the extent of the cooking zone, the discharge of fuel consumption from the first 4 pairs of burners is 250, which is 2.95 times higher than the theoretically necessary heat consumption for this decrease in furnace productivity. After 0.8 h, i.e. through time interval equal to 0.4 time

passing the glass melt from the quill point to the end of the cooking pool, on the last working pair of burners, in order to maintain the set glass melt temperature in the stud, the gas consumption is increased

at 40 m / h, which is 0.47 fuel per unit of time theoretically necessary for proportioning fuel consumption to the glass melting process.

This two-step proportioning of the fuel consumption by the burners of the furnace when its performance changes eliminates the decrease in the temperature of the melt in the basin of the cooking part, especially in the area under the charge, and contributes to the stabilization of the thermal regime of the furnace while reducing fluctuations from the predetermined temperature of the glass mass from 5-6 to 2-3 ° C per day.

As a result of the increase in thermal

melt homogeneity ensures a reduction in specific fuel consumption by 3-5% and an increase in the yield of glass of I grade by 1: 5-2.5%.

With increasing performance,

the furnace on the welded glass melt (after the start of the broken glass ribbon of the Air Force machine) the fuel consumption in the furnace burners is restored to the previous level.

The system of proportional fuel consumption with a change in the furnace performance ensures the achievement of the above technological affects, both with a decrease and with an increase in the productivity of the furnace on the welded glass mass within 10-18% of the working capacity of the furnace on the welded glass mass.

Claims (1)

The invention of the method of heating a glass-melting bath furnace with a transverse direction of the flame, including a proportional change in fuel consumption on the burners of the charge zone and cooking foam when the furnace performance changes on the welded glass mass, as well as heating in the area of a clean glass glass mass, which is different glass output, improving product quality and fuel development, changes in fuel consumption per unit of time on burners of the charge zone and cooking foam increase 2-3 times from theoretically The required, then after a time interval of 0.2-1.2 times the duration of the passage of glass from 516047566 kelpunkt to the end of the cooking pool. The glass melts that make up O 2-1 7 from the teo make the reverse change in the consumption of the rethetically necessary fuel consumption in fuel on the burners of the clean mirror zone a unit of time.