Boiler Accessories – Feedwater Deaerators
Why Deaerate Boiler Feedwater?
There are many advantages to deaerating water prior to boiler input, but they all boil down to reduced cost operations.
- Water is heated during deaeration to near the temperature of the boiler water, thus minimizing the risk of thermal shock damage to a high value boiler system.
- The deaerating process removes noncondensible gases (oxygen and carbon-dioxide) which tend to act as insulators inhibiting the transfer of heat within the boiler.
- Removal of corrosive oxygen and carbon-dioxide controls corrosion within the boiler and piping, extending the life expectancy of the system and reducing maintenance cost.
- Higher temperature feedwater reduces the drop in boiler operating pressure which can occur when cold water is added.
- Recycling of steam from vents and flash steam from traps that would otherwise be vented to the atmosphere can result in appreciable energy savings.
- Mechanical deaeration by feedwater deaerators can cut the amount of chemical consumables used for water conditioning for a continuing operating cost saving.