Energy Saving Methods For Float Glass (1)

The glass industry is a high energy consuming industry, and glass furnaces are the equipment with the highest energy consumption in glass production lines. Fuel costs account for approximately 35% to 50% of glass costs. Most float glass furnaces designed by our country can achieve a glass liquid consumption of 6500kJ/kg to 7500kJ/kg, while large foreign float glass enterprises only have 5800kJ/kg of glass liquid. There is a certain gap between us and the international advanced level.
The thermal efficiency of glass furnaces in developed countries is generally between 30% and 40%, while in China, the average thermal efficiency of glass furnaces is only 25% to 35%. One of the important reasons for this gap is the unreasonable design of the furnace structure and insulation measures, as well as the low quality of the refractory materials used. Secondly, the backwardness of domestic float glass process operation technology and inadequate management are also reasons for high energy consumption, poor melting quality, and short kiln life. China has more than 140 float glass production lines, with a rapid increase in glass production capacity and gradually intensifying market competition. As the main fuel for glass, heavy oil continues to rise in price and accounts for an increasing proportion of glass costs. Therefore, reducing glass energy consumption is of great significance for reducing production costs, improving enterprise market competitiveness, reducing environmental pollution, and alleviating energy shortages.