Knowledge
01
Introduction of Glass Furnace
2024-06-21 15:17:02
div容器
Glass furnace is one of the key equipment used in the production of glass products. Its function is to heat the raw materials to high temperatures, melting them and forming glass. Here is a brief introduction to glass furnaces:
Structure and Working Principle:
A glass furnace typically consists of a furnace body, combustion system, control system, etc. Its working principle involves utilizing high-temperature heat generated by combustion of fuel (such as natural gas, heavy oil, etc.) to heat the glass raw materials in the heating zone of the furnace body to high temperatures, melting them into liquid glass. The control system is used to monitor and adjust parameters such as furnace temperature and combustion status to ensure the quality and production efficiency of the glass.
Types:
Glass furnaces can be divided into various types based on different heating methods and furnace body structures, including electrically heated glass furnaces, gas-fired glass furnaces, suspended glass furnaces, etc. Different types of glass furnaces have differences in production processes and energy consumption and can be selected according to production needs.
Applications:
Glass furnaces are widely used in the glass manufacturing industry, including flat glass, glassware, glass fibers, and other fields. They provide the necessary high-temperature environment and thermal energy support for the production of glass products, making them essential equipment in the glass industry.
Technological Trends:
With advances in technology and increasing environmental awareness, the design and manufacture of glass furnaces are continuously innovating and improving. Future glass furnaces will focus more on energy efficiency and environmental performance, adopting advanced energy-saving technologies and clean combustion technologies to reduce emissions and achieve green production.
In summary, glass furnaces are indispensable key equipment in the glass manufacturing process, and their quality and performance directly affect the quality and production efficiency of glass products. With continuous technological advancement, glass furnaces will continue to develop and contribute to the sustainable development of the glass industry.
End Fired Furnaces
Due to its high flexibility and its low energy consumption the regenerative end fired furnace is the working horse of the glass industry. Most mass-produced glass products such as bottles and containers of all kind, tableware and glass fiber can be produced with a minimum of fossil fuel firing and thus carbon dioxide emission. Its typical melting capacity is 30 – 500 t/d, in some cases up to 700 t/d can be achieved. Limitations in furnace size result from flame length and crown span width, especially of the burner ports.
CROSS FIRED FURNACES
In comparison to other furnaces the cross fired furnaces can be designed in larger overall dimensions due to the larger firing zone because of the lateral burner arrangement. The only limitation is the furnace width due to crown span length. Typical melting capacities are in between 250 – 500 t/d, but also 750 t/d or even more are possible. Similar to the end fired furnace the regenerative cross fired furnace ensures low energy consumption due to heat recovery system and high flexibility regarding load changes.
The energy consumption of a cross fired furnace is usually slightly higher than that of an end fired furnace.
However, this furnace type can, compared with the end fired furnace, be built with larger melting surfaces because of the lateral arrangement of the port necks. Therefore the cross fired furnace is normally used for furnaces with high capacity or in case the existing building does not allow an end fired furnace.
Float Glass Furnaces
Float glass furnaces are the largest type, both with regard to dimensions and to the overall melting output. These furnaces are close to the limit of constructive possibilities. Furnace capacities are usually between 600 – 800 t/d. Of course smaller units with 250 t/d are as possible as larger units up to 1200 t/d.
Float glass furnaces are especially designed for the production of soda lime glass. The requirements concerning glass quality are much stricter and differ from those for container glass.