Oil-fired boiler steam atomization Y-type injector

The application of a high velocity steam stream atomizes the oil. The nozzle head is composed of an oil hole, a steam hole and a mixing hole to form a Y-shaped arrangement. The oil pressure is 0.5 to 2 MPa, and the vapor pressure is 0.6 to 1 MPa.
The oil and steam enter the mixing holes and collide with each other to form an oil-vapor mixture in an emulsified state, and then sprayed into the furnace through the mixing holes to form an atomizing torch. In terms of conditioning, the steam pressure is kept constant and the oil pressure is adjusted to change the fuel injection amount. The oil extinguisher is composed of two parts, the fuel injector and the air conditioner.

The former function is to make the fuel oil injected into the furnace constitute an atomizing torch; the latter function is to supply the oil droplets in the atomizing torch with an appropriate amount of air. In order to prevent the oil and gas evaporating from atomized oil droplets from cracking hydrocarbons under the condition of oxygen deficiency above 700 °C to produce carbon black particles which are difficult to burn out, a part of air and oil mist must be premixed to make the oil and gas Oxidation without seizure.
Therefore, the air regulator can be designed as a volute or a guide vane with an adjustable opening, so that the air is rotated, and then the rotary airflow from the center of the volute is well mixed with the atomized oil torch, as shown in the figure. 1 is shown. The oil quencher is also like a pulverized coal quencher, which can be arranged on the front wall, front and back walls, furnace roof or four corners of the furnace. According to the capacity of the boiler, each furnace can be equipped with 8 to 40 oil extinguishers.

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