One of the main causes of energy waste in industrial furnaces is heat loss due to incomplete combustion. This is caused by both chemical and mechanical incomplete combustion. Chemical incomplete combustion can lead to heat loss due to the incomplete combustion of combustible gases such as carbon monoxide, hydrogen, and ammonia in the flue gas, resulting in black smoke from industrial furnaces fueled by loose coal. The high-temperature dust, sulfur dioxide, and carbon dioxide in this black smoke pollute the atmosphere.
Mechanical incomplete combustion mainly results in unburned coal particles, ash, and fly ash. These ash and particles also cause significant environmental damage. Oxygen-enriched combustion technology can significantly increase combustion temperature and reduce the amount of air required for combustion, thereby reducing flue gas volume and heat loss from the combustion gas. This saves fuel, extends the service life of the industrial furnace, and increases its output.
However, oxygen-enriched combustion technology produces large amounts of byproducts such as nitrogen during air separation. This not only fails to improve air pollution but may even exacerbate air quality deterioration. Furthermore, the related equipment increases power consumption. Therefore, its widespread application requires further improvement and research. In industry, we can also use high-temperature air combustion technology and magnetization treatment of fuel before it enters the furnace to achieve the goal of energy saving and consumption reduction.
