Deaerator Head

Air acts as an oxidizing agent and causes corrosion and weakening leading to damage and leakage in pipes and related equipment. In Boilers it can cause serious accidents.

Air gets in the system mainly through Boiler Feed water. The harmful element in Air is Oxygen, and De Aeration essentially involves removal of Oxygen. This is done by heating the water in the De-aerator Head (DAH) to 90Deg C when Bulk of the Oxygen is eliminated. [Ideally at 102-105Deg C, Oxygen is almost totally eliminated] when the bulk of Oxygen is released from the Hot water.

De-Aerator is a dome shaped device [called the mixing unit] fitted to the Feed Water Tank, having three Nozzles for Cold Make up Water, Recovered and recycled hot condensate and Flash Steam. It also has a top vent nozzle with automatic thermostatic vent. The three nozzles result in mixing of the three fluids, consequently heating the water and the Oxygen thus released is vented out from the top. A SS dip/Immersion tube with perforations attached to the De Aerator is led into the tank up to near to the tank bottom, releasing hot water through perforation from the bottom level of water helps the mixing of the heated water from the De Aerator Head and the water available in Feed water Tank, and supply hot water to boiler, saving Fuel costs, reducing O2 and avoiding Flashing and noise, and achieve higher levels of process efficiency.

Available in 4 sizes having different capacities. Others on request.

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  • Removes Air, Oxygen, and other non condensable gases.
  • Provides effective mixing of BFW with available thermal streams.
  • Immersed Perforated Pipe allows uniform heating in Feed water tank.
  • Improves efficiency of Boilers by preheating Feed water.
  • SS internals avoid corrosion.
  • HP boilers can afford to go for a pressurized de-aeration system, But for process boilers a separate DA vessel will cost as much as the boiler cost and may not be affordable and justified.
     
  1. UDH

    UKL Deaerator Head for boiler feedwater tank in stainless steel and carbon steel construction as per AISI 316 and ASTM A106 GrB

    Size  (NB)          Max. Op. Pr / Temp (kg/cm2 / oC) End connections Optional /Additional information
    150 to 30010.54 / 400Flanged #150/#300

    IBR/Non-IBR

    Insulation / Jacket

This is a product which is used to mix flash steam, condensate & make up water in the feed water tank.
Avoid hammer due to dual phase mixing of flash steam & condensate/water in feed water tank.
Removes dissolved gases & oxygen which is harmful to boiler & steam line & installed steam products.
It support uniform mixing & increases feed water temperature which is entering in the boiler.
Reduces consumption of chemical used for oxygen scavenging.
Every 6 Deg increase in feed water reduces fuel consumption approximately by 1% .
Ensure homogenous mixing of condensate, flash steam & make up water, Avoids steaming over the feed water tank man-hole.
Deaerator head is installed in feed water tank along with air vent and allied accessories.
Can be installed in existing feed water tank considering the thickness and MOC of tank with respect to deaerator pressure.
The bottom portion of the deaerator head should be slightly above the bottom of the tank for proper mixing of the flash steam, condensate & make up water in the tankas well as to avoid vibration in feed water tank.