Oxy-fuel/full oxygen burner
2025-08-05
3.1 Definitions and Classifications
Type | Definition |
Oxy-fuel burner | Oxygen concentration in the combustion-supporting gas is higher than that in air (>21%, generally 30-90%) |
Pure oxygen burner | The combustion-supporting gas is nearly or equal to 100% oxygen |
3.2 Basic Principles
- Traditional combustion: Air is used as the combustion-supporting gas, with an oxygen content of approximately 21%, the rest being nitrogen.
- Oxy-fuel/pure oxygen combustion:
- Increase oxygen concentration, reduce nitrogen participation;
- More complete combustion, higher flame temperature;
- Concentrated heat, higher efficiency;
- Reduce NOx and CO2 emissions (especially suitable for carbon capture).
3.3 Structural Composition
- Main fuel nozzle (natural gas, coal gas, heavy oil, etc.)
- Combustion-supporting gas nozzle (oxy-fuel/pure oxygen)
- Mixing chamber (or layered structure)
- Ignition device and flame monitor
- Cooling protection (water cooling/air cooling required for some high-temperature applications)
3.4 Technical Characteristics
Characteristics | Description |
High flame temperature | Can reach 2500~3000℃, far higher than the approximately 1800℃ of air burners |
Fast combustion rate | Improve heat exchange efficiency and shorten heating time |
Energy saving and consumption reduction | Reduce flue gas volume and lower exhaust heat loss; fuel consumption decreases by 10-40% |
Reduce emissions | Reduced NOx generation (low nitrogen content), CO2 reduction suitable for carbon capture |
Precise control | Flame shape, intensity, and jet angle can be flexibly designed for different industrial kilns |
3.5 Application Fields
Industry | Application equipment or scenarios |
Metallurgy | Steel ladle baking furnace, intermediate vessel, heating furnace, annealing furnace, etc. |
Non-ferrous metals | Aluminum melting furnace, zinc pot, magnesium furnace, etc. |
Glass industry | Melting furnace, annealing furnace |
Cement and building materials | Rotary kiln, lime kiln |
Waste incineration | High-temperature pyrolysis furnace |
Energy and chemical industry | Syngas generator, hydrogenation unit |
3.6 Typical Advantages and Economic Benefits
- Fuel saving: 10~40% more energy-efficient than air combustion
- Increased production capacity: Increase unit time output, furnace temperature can respond quickly
- Uniform furnace temperature: Strong thermal radiation, helps to evenly distribute temperature
- Extend furnace life: Concentrated combustion area, reduce furnace lining corrosion
- Reduce exhaust gas treatment burden: Significantly reduce exhaust gas volume
3.7 Existing Risk Points and Countermeasures
Risk points | Countermeasures |
High cost (oxygen source) | Use oxy-fuel instead of pure oxygen, use it with an oxygen generation system |
Shorter furnace lining life (high temperature) | Use high-temperature refractory materials, optimize flame distribution |
Complex control (easy local overheating) | Precise ratio control system, staged oxygen supply, flow regulation |
High safety requirements (pure oxygen explosion risk) | Add oxygen explosion-proof device, set oxygen concentration over-limit alarm |
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Address: No. 118, Fengqing Road, Jinshui District, Zhengzhou City
Tel:+86-371-60960056
Mobile:+8613849187223
Email:zhongweigongyelu@126.com
Address: No. 118, Fengqing Road, Jinshui District, Zhengzhou City
Tel:+86-371-60960056
Mobile:+8613849187223
Email:zhongweigongyelu@126.com
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