How is the Oil Mist Mixed with Air?
How is the Oil Mist Mixed with Air?
Good atomization provides conditions for the combustion of liquid fuel, but the combustion effect may still be poor if the oil mist and air are not mixed well. Therefore, the mixing of oil mist and the air is also an important factor affecting combustion.
The mixing of atomized oil mist and air flow also plays an important role in the heavy oil combustion process, which is the same as the mixing process in gas fuel combustion. After the oil is atomized into an oil mist, it must be well mixed with a large amount of air to burn quickly. Therefore, the mixing of oil mist and the air is not as easy as the mixing of gas and air, and the burning of heavy oil is not as easy as the burning of gas to get a short flame and achieve complete combustion.
Therefore, for oil-burning furnaces, special attention must be paid to strengthening the mixing process of oil mist and air. This problem is often ignored in practice. For example, on some furnaces that use high-pressure oil burners, high-speed oil mist sprayed entirely by the oil nozzle naturally absorbs air from the atmosphere to the combustion chamber (furnace) without forced air supply by several fans. In this way, the amount of air absorbed is often seriously insufficient, and the absorbed air mixes with the oil mist very slowly, so the flame is stretched very long and the combustion is incomplete. Although the atomization quality of the high-pressure oil burner is better than that of the low-pressure oil burner, the combustion effect is not good due to the poor mixing of oil mist and air.
The mixing of oil mist and the air is carried out in a special air supply capacity. There are right angles, intersection angles, vortex mixing, and primary, secondary, and tertiary mixing. The situation is similar to that of atomization.