What is used to atomize fuel oil in a boiler system?

In a boiler system, the process of atomizing fuel oil is crucial for achieving efficient combustion. The correct answer involves the use of primary air. This air is mixed with the fuel oil to create a fine mist, which enhances the combustion process by allowing the fuel to burn more completely. Atomization facilitates better mixing of fuel with air, leading to improved efficiency and reduced emissions during the combustion process.

In traditional boiler designs, primary air is introduced to help disperse the fuel oil as it is injected into the combustion chamber. This means that the atomizing process not only relies on the physical properties of the fuel itself but also on the airflow provided by the primary air to ensure that the fuel is adequately atomized.

While atomizing pumps and fuel injectors also play important roles in the distribution and injection of fuel, they are not solely responsible for the atomization process. The pump moves the fuel oil and can generate pressure, while the injector directs the fuel into the combustion chamber. However, the actual atomization for optimal combustion primarily depends on the mixing with primary air. Thus, understanding the function of primary air in this context highlights its significance in the atomization of fuel oil in boiler systems.