Understanding how a deaerator works can significantly improve your boiler system's performance and lifespan. Deaerators remove oxygen and other dissolved gases from boiler feedwater, crucial in preventing corrosion in boilers, piping, and related equipment. By leveraging temperature and pressure, deaerators efficiently reduce dissolved gases to safe levels, typically achieving oxygen concentrations as low as 5 ppb.
Here's a look at five common deaerator issues and actionable steps to maintain optimal performance:
1. Poor Venting Performance
Your deaerator should display a steady 2-4-foot plume of steam from the vent stack. Less steam indicates insufficient venting or low temperatures, while excessive steam can suggest excessive steam input or trap leaks.
Action: Regularly monitor and adjust pressure and temperature settings to maintain optimal venting.
2. Significant Temperature Variations
Proper operation requires closely matching steam and feedwater temperatures. The water temperature should consistently remain within 2°F below the steam temperature.
Action: Ensure separate and accurate temperature monitoring on both steam and water inlet lines.
3. Inaccurate Temperature Readings
Faulty temperature sensors can negatively impact deaerator efficiency, leading to insufficient gas removal.
Action: Regularly verify and calibrate temperature sensors and transmitters to maintain accurate readings.
4. Fluctuating Steam Pressure
Steady steam pressure between 3-10 PSI is essential for optimal deaeration. Variability or insufficient pressure can diminish performance.
Action: Regularly inspect and adjust steam controls to maintain consistent, optimal steam pressure.
5. Excessive Vibration or Rumbling
Unusual noises and vibrations can indicate internal issues such as clogged spray nozzles or cracked condenser tubes.
Action: Inspect deaerator internals regularly and conduct necessary maintenance to clear blockages or repair damage.
How a deaerator works:
Video credit: ConvergenceTraining.com
Partner with Watertech for Optimal Performance
If you encounter mechanical issues with your deaerator, Watertech is your trusted partner in boiler water management. Our expert team provides tailored chemical treatments and proactive maintenance services, including our FreedomPlus Pretreatment Services, ensuring your equipment operates reliably and efficiently.
For personalized support or more information, contact Watertech and request a site survey.
