The principle, purpose, and product advantages of heavy oil industrial boiler burners Principle: Hea
The principle, purpose, and product advantages of heavy oil industrial boiler burners
Principle: Heavy oil enters the burner in two ways: swirling oil and axial oil, similar to the internal and external air of the burner. The vortex oil is distributed in a circular shape outside; Axial flow oil is a straight cylindrical jet in the middle. When it reaches the head of the spray gun, it converges into a path and enters the kiln through the nozzle hole of the atomizing plate. The atomization plate is divided into various specifications based on the size of the nozzle hole. During the heating and feeding process, replace atomizers of different specifications as needed.
Product Usage: Heavy oil is a by-product of crude oil refining. It is usually prepared from different proportions of cracked heavy oil, vacuum heavy oil, atmospheric heavy oil, or wax oil.
When selecting, the overall requirements should be high calorific value, good combustion performance, moderate viscosity, low corrosiveness and solid impurities, and easy storage and transportation.
The viscosity represents the flowability of the fuel. The higher the viscosity, the worse the atomization effect. It is the most important quality and service performance indicator for heavy oil, directly affecting the efficiency and fuel consumption of fuel pumps and injectors. As the temperature increases, the viscosity of heavy oil gradually decreases. Therefore, it is necessary to heat and increase high viscosity oil for smooth transportation and atomization.
Therefore, when selecting oil, in addition to understanding the conventional indicators of the oil, it is also necessary to understand the viscosity temperature curve of the oil to ensure that heating can make the heavy oil reach the viscosity required by the burner before atomization. For mechanical atomization burners, the optimal fuel viscosity at the front of the nozzle is 2.5-3.5 ° Et, and the optimal fuel viscosity for high-pressure air atomization burners is 4.5-5.8 ° Et.
The viscosity unit is determined by Engel viscosity (° Et) and kinematic viscosity ν T (mm2/s, also known as cSt) represents. Convert the relationship to: ν T=7.310 ° Et-6.31
Product advantages:
1. Flame stabilizer is used to maintain a stable vortex circulation at the root of the flame, reduce the rotation of internal air, and reduce the primary air volume by half.
2. Use a flame retention cover to prevent the arbitrary divergence of heavy oil carried in the airflow, resulting in a braking like effect. The flame shape has a reasonable history, avoiding high temperatures at the kiln head and extending the service life of the kiln head shield iron.
3. The external clean air has intermittent rectangular straight air jets that reach the front of the burner and become annular gap jets. At the same time, increase the area of the annular gap to extend the flame and increase the average temperature inside the kiln.
4. The vortex blades are installed at the front end of the inner air duct, 2cm away from the front end of the outer cylinder wall, to collect flames and avoid high temperatures at the kiln head. The first handle of the burner can be adjusted. The position of the rotating blade is located at the 6-inch position when the truck scale leaves the factory. The adjustment range is 0} 6 centimeters. There are no negative values. The internal wind vortex can only be pulled back to prolong the flame.
5. The central wind blows back the high-temperature gas around the nozzle, not only cooling the inside of the nozzle, but also cooling the end face, thereby protecting the burner head and extending its service life.