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What is a deaerator tank primarily used for?

  1. Storing chemicals

  2. Removing oxygen from water

  3. Cooling water

  4. Heating fuel

The correct answer is: Removing oxygen from water

A deaerator tank is primarily designed to remove dissolved gases, particularly oxygen, from water. This process is critical in steam boiler systems because the presence of oxygen in boiler feed water can lead to corrosion and other damaging effects within the boiler and associated piping systems. By effectively reducing the amount of oxygen before the water enters the boiler, the deaerator tank helps to enhance the longevity of equipment and improve the overall efficiency of the steam generation process. While the other options presented involve different functions, they do not pertain to the primary purpose of a deaerator tank. Storing chemicals, cooling water, or heating fuel are distinct operations that do not directly relate to the pivotal role of deaerating water to prevent corrosion and maintain system integrity in boiler operations. The focus on removing oxygen is key for ensuring safe and efficient boiler performance.