The issue of high oxygen content in deoxygenated water

An increase in the oxygen content of deoxygenated water can be caused by various factors, including but not limited to the following: 1. **Equipment failure or improper operation**: If there is a malfunction in the thermal deaerator itself or if it is not operated properly, this may result in a reduced deoxygenation effect. For example, if there is a problem with the cooling system of the thermal deaerator, it may affect the deaeration efficiency of the equipment. 2. **Oxygen content in the water**: If the oxygen content of the water entering the thermal deaerator is already high, then the oxygen content in the water exiting the deaerator may also increase accordingly. 3. **Insufficient reaction time**: Thermal deoxidation requires a certain amount of time for the reaction to take place; if the water flow is too fast or the equipment does not operate long enough, this can also result in poor deoxidation effects. 4. **Environmental factors**: For example, changes in temperature and pressure can affect the deoxygenation effect. If the ambient temperature drops or the pressure increases, it may make oxygen more soluble in water, thereby increasing the oxygen content in deoxygenated water. In such cases, it is recommended to first check the condition of the thermal deaerator and its operating procedures, to ensure that the equipment is functioning properly and is being operated correctly. Secondly, the oxygen content of the incoming water can be monitored to determine whether the problem is caused by high oxygen levels in the water. Finally, it is also necessary to monitor environmental conditions such as temperature and pressure, and operate the equipment under suitable conditions whenever possible. .

Insufficient temperature is the main cause; also check whether there is condensed water being directly fed into the deaerator, especially condensed water from open-loop recovery

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