What are the 3 ways to save energy efficiently in float glass?
With the continuous development of social economy, the competition of China's glass industry has become more and more intense, saving energy and reducing costs have become the core competitiveness of enterprises. The glass production is characterized by high resource consumption, serious pollution and energy consumption, which not only affects the survival of enterprises, but also restricts the development of the whole industry. Energy saving and consumption reduction is the best way for enterprises to reduce costs and improve efficiency.
Energy saving in combustion technology
1、Oxygen-fuel technology
The core of oxygen-fuel technology process lies in oxygen-fuelcombustion lance, in order to strengthen the contact area of fuel and oxygen mixing, oxygen-fuelcombustion lance as a whole into a rectangle, can more accurately control the flame coverage, in the combustion process for phased oxygen-fuelcombustion, can burn more energy from the lance into heat radiation, and produce more carbon black, strengthen the flame brightness, make full use of the heat transfer uniformity of the float glass kiln, strengthen Black body radiation heat transfer efficiency, improve the penetration efficiency of shorter wavelength thermal radiation in the glass liquid. Float glass using oxygen-fuel technology can increase the thermal efficiency by 20%, but when using this process, attention needs to be paid to the selection of refractory materials for float glass kilns. The concentration of water vapor in the flue gas will increase due to oxygen-fuel combustion, which will produce a greater concentration of alkaline vapor during the production of float glass, accelerating the erosion of refractory materials and affecting the kiln age and production scale.
2、Oxygen-enriched combustion technology
The basic principle of using oxygen-enriched combustion technology to produce float glass is mainly that the raw materials reduce the generation of smoke through oxygen-enriched combustion, the partial pressure and content of carbon dioxide and water vapor in the combustion products increase, the content of NOx decreases, the flame blackness increases, the flame temperature increases, which speeds up the combustion process of raw materials and improves the heat transfer efficiency of the flame between the mating material and the glass liquid, thus improving the float glass kiln's Melting efficiency. Oxygen-rich combustion can burn the fuel more completely, which can effectively save energy consumption. The higher the temperature of the float glass kiln, the more the energy saving effect of oxygen-enriched combustion technology is enhanced.
Energy saving in the melting section structure
The improvement direction of melting section structure mainly includes increasing kiln width, improving kiln pool structure and adopting honeycomb swan roof structure, etc. Increasing kiln width can reduce the number of small furnace pairs, and increasing kiln width can reduce the thickness of material layer and prolong the retention time of high temperature flame in the kiln under the condition of ensuring the same melting rate. This method significantly enhances the heat transfer effect of the effective radiation and reduces the proportion of the flame root zone to the flame length, which facilitates the melting process in the kiln. Reducing the number of small furnace pairs can slow down the flow rate of the mating material and reduce the erosion, burning and blockage of the mating material on the pool wall.
Technical energy saving in the feeding stage
1、Using equal width feeding technology and improving feeding pool
Feeding is an important process link in the melting process, which has a large impact on the final quality and yield of the product, and is related to the location of the melting zone, the melting speed of the mating material and the stability of the bubble boundary line. The glass industry needs to improve the feeding pool and adopt advanced equal-width feeding technology, fully recognizing the shortcomings of traditional feeding technology and avoiding the situation of bias or splitting during the feeding process.
2、Fully sealed structure of feeding port
The use of a fully sealed feed opening ensures stable pressure and temperature in the kiln and can reduce the erosion of the raw material on the feed cell wall, thus extending the life of the kiln.
3、Segmented variable channel heat storage chamber
The purpose of studying the variable channel heat storage chamber is to increase the preheating temperature of the combustion air by increasing the heat transfer area and heat transfer coefficient of the heat storage chamber in the float glass kiln, to strengthen the heat transfer efficiency between the glass liquid and the flame, and to reduce the heat loss in the process of discharging flue gas. The improved heat storage chamber increases the temperature of preheated air, and the increase of flame combustion temperature makes the fuel burn fully, reduces the heat loss of fuel while increasing the heat transferred from the flame to the glass liquor in the float glass kiln. Improve the variable channel heat storage chamber can be in the case of not increasing the height of the heat storage chamber lattice body, the lattice body is divided into high and low sections according to the temperature, or the choice of barrel-shaped lattice blocks. Both methods are designed to increase the heat transfer area of the lattice body in the heat storage chamber.
The energy-saving ways of float glass kiln can also adopt electric fluxing technology, change the temperature regime "double peak heat load" operation, improve the lattice bricks of the heat storage chamber, use new insulation materials, etc. The energy-saving potential of float glass kilns should be fully explored while improving the quality of glass to maximize the energy-saving effect and reduce production costs, thus promoting the stable development of the glass industry.
HHG is a professional glass manufacturer and glass solution provider include range of tempered glass, laminated glass, textured glass and etched glass. With more 20 years development, there are two produce lines of pattern glass ,two lines of float glass and one line of restoration glass. our products 80% ship to overseas, All our glass products are strict quality control and carefully packed in strong wooden case, ensure you receive the finest quality glass safety in time.
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