| 摘要 |
An atmospheric deaerator unit having a vessel divided into an atmospheric section and a low pressure section, the low pressure section containing steam supply line for deaerating a water spray circulated from the atmospheric section through a water circulating line using a series of spray heads for spraying water into the low pressure section, the circulating line communicating between the low pressure section and the atmospheric section, the atmospheric section having a vent open to atmosphere with a vent condenser to purge vented non-condensible gases from the atmospheric section, and, the low pressure section being pressure protected by a water column conduit communicating between the vessel sections to return overflow water and blow-through excess pressurized steam and vapor from the pressurized section to the atmospheric section, the unit being controlled by a steam control valve using pressure of the pressurized section or water temperature in the atmospheric section.
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