As the steel industry continuously pursues energy conservation, emission reduction, and production efficiency, ladle baking furnaces using all-oxygen or oxygen-enriched combustion technology are gradually replacing traditional air combustion devices. All-oxygen/oxygen-enriched combustion systems achieve higher combustion temperatures, lower emissions, and faster heating rates by increasing the oxygen concentration in the combustion gas, making them an ideal choice for green upgrades in ladle preheating.
I. Working Principle and Structural Characteristics
The main difference between all-oxygen/oxygen-enriched baking furnaces and traditional devices lies in the replacement of combustion air:
- All-oxygen combustion uses pure oxygen as the combustion medium;
- Oxygen-enriched combustion enhances combustion efficiency by increasing the oxygen content in the air (typically 30%-90%).
Structurally, this type of baking furnace mainly includes:
- Oxygen-enriched/all-oxygen burner
- Premixed fuel control system
- High-temperature insulation type cover and furnace body
- Automated control and safety interlock system
The theoretical temperature of all-oxygen combustion flame can reach above 2800℃, and the ladle baking temperature is generally around 1100℃, which can achieve rapid ladle heating and shorten the ladle turnover cycle.
II. Technological Advantages
- High efficiency and energy saving: After the oxygen concentration is increased, the combustion speed is accelerated, and the thermal efficiency can be increased to over 95%; at the same time, the amount of nitrogen entering is reduced, reducing the flue gas volume and heat loss.
- Significant emission reduction: NOx generation is significantly reduced, meeting the ultra-low emission standards of steel enterprises.
- Concentrated flame, high heat transfer efficiency: More suitable for deep heating of large ladles or thick-walled ladles.
- Intelligent control system: It can realize flame length adjustment and automatic oxygen/fuel mixing ratio control functions, improving operational stability and safety.
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III. Applicable Scenarios and Energy Matching:
All-oxygen/oxygen-enriched systems are suitable for: large steel companies with high production rhythm and safety requirements, making full use of low-calorific gas resources from steel plants, reducing fuel operating costs, and also suitable for new production lines in steel plants or energy-saving technological transformation and upgrading projects for gas baking furnaces.
Keywords
Energy-saving full-oxygen/oxygen-enriched combustion ladle baking device
Energy-saving full-oxygen/oxygen-enriched combustion ladle baking device
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Belonging Split
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Tel:+86-371-60960056
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Email:zhongweigongyelu@126.com
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