The deaerator is purposely designed to hold back corrosion in boiler cycles. The corrosion is caused by the presence of non-condensable gases such as carbon dioxide and oxygen within the boiler feed water. A tray type deaerator is being used to remove these non-condensable gases. Feed water is heated and vigorously scrubbed by a counter current flow of steam within the deaerator. All incoming un-deaerated water enters the deaerator through spring loaded and stainless steel valves.
Uniform patterns of spray are produced. Fine droplets of water maximize surface areas in contact with steam. Temperatures are raised to within degrees of saturation temperature. When temperatures are raised, a majority of corrosive and non-condensable gases are released. Pre-heated and partially deaerated water flows through the tray’s stack. It is here that the hottest and purest steam vigorously scrubs water in order to heat it to its saturation temperature and strip out the last vestiges of dissolved gases.
The whole deaeration process takes place in a stainless steel enclosure. This eliminates the need for vessel lining or cladding. It also ensures longer lifespans of equipment with little need for any maintenance work. Two features of the tray type deaerator can be highlighted. The tray is vertically proportioned and operates quietly. But it also has a rugged design that encourages durability. It also has a guaranteed performance over wide load swings. Oxygen removal takes place at 0.005 cc per liter and in line with the Heat Exchange Institute’s design intentions.
Capacities of up to 200,000 parts per hour at one hundred percent makeup occurs. 250,000 parts per hour are possible with condensate. Packaging and piping of the deaerator is accessorized. There is also the option of taking a BF pump package. The deaerators are built for prolonged and uninterrupted use.