Two types of spray deaerators are in general use. These are the vertical spray type deaerator and the horizontal spray type deaerator. The vertical spray deaerator can be made up of a single vertical tank. Industrial customers have a choice between purchasing deaerators with or without pumps, but this will be influenced by the related deaerators’ carrying capacities. Vertical spray deaerators without pumps have a carrying capacity of no more than 260,000.
But customized alternatives can go as high as 800,000. The vertical spray type deaerator, without its pump, is specifically primed for use in the light commercial and industrial space. This for those business practitioners who have cost efficiencies in mind. This deaerator also caters for those who find space to be at a premium.
The horizontal spray type deaerator, without pumps, has a carrying capacity of up to 350,000, while customized units can go as high as 2000,000. Carrying capacity with a pump package included comes in at 125,000, while customized pump packaged units go as high as 500,000 only. With the horizontal deaerator, low headroom is the concern. But of universal concern for new entrants to specific commercial or industrial markets will be whether to utilize the spray deaerator or its alternative, the tray type deaerator.
Note that while deaeration in a spray type unit decreases drastically as its loads decrease, the tray type deaerator uses a different principle for the release of gasses. A large water surface remains necessary in order to provide the space required for the release of dissolved gases. This happens when water moves from one tray tier to another, exposing as much surface area as possible to the scrubbing action generated by steam.
In closing, headroom was provided for the tray type deaerator during this basic intro.