Behrmann Company

- Model “SP”

• Removal of corrosive oxygen and carbon dioxide from boiler feedwater
• Reduction in the use of oxygen scavengers and other additives
• Opportunity to reclaim heat by recovering exhaust and flash steam
• Improved heat transfer by eliminating non-condensable gases
• Reduction of thermal shock to the boiler by feeding water closer to the boiler operating temperature

Operation

Water (‹180°F) enters the internal direct contact vent condensor (D) thru the water inlent (A). Water flows thru the spray valves (B) in the form of a thin hollow cone pattern into the steam atmosphere. The water, now preheated and partially deaerated, enters the pan (E) and flows into the downcomer (G). Medium temperature return (180–225°F) bypasses the vent condenser and spray valves (as it is already preheated) & enters thru (F) directly into the pan and into the downcomer (G). Steam enters the steam inlet (C) & flows into the scrubber pot (H). It is in this section that the final deaeration takes place. The water enters the scrubber pot via the downcomer & mixes with the steam flowing into the scrubber pot (H). The water is forced thru a series of baffles while being vigorously scrubbed by the steam. When the water reaches the top of the scrubber pot, it is finished with the deaeration process and flows over the top and into the storage section of the deaerator. All non-condensable gases exit thru the vent (F).

- Model “TR”

• Removal of corrosive oxygen and carbon dioxide from boiler feedwater
• Reduction in the use of oxygen scavengers and other additives
• Opportunity to reclaim heat by recovering exhaust and flash steam
• Improved heat transfer by eliminating non-condensable gases
• Reduction of thermal shock to the boiler by feeding water closer to the boiler operating temperature

Operation

Water (‹180°F) enters the internal direct contact vent condensor (D) thru the water inlent (A). Water flows thru spray valves (B) into a thin hollow cone pattern thru the steam atmosphere of the tray box. The now preheated and partially deaerated water is directed over the trays (G) and cascades thru the tray stack. Steam enters thru (D) and flows upward thru the trays (G) as the water flows downard (this is called a counterflow design). In this final stage of deaeration the steam, while moving upward thru the trays, is scrubbing the water flowing downward. The deaerated water then exits the tray box (H), passes thru the downcomer (F) and enters the storage section. All non-condensable gases exit thru the vent (F).

- Model “PK”

• Removal of corrosive oxygen and carbon dioxide from boiler feedwater
• Reduction in the use of oxygen scavengers and other additives
• Opportunity to reclaim heat by recovering exhaust and flash steam
• Improved heat transfer by eliminating non-condensable gases
• Reduction of thermal shock to the boiler by feeding water closer to the boiler operating temperature

Operation

Water (‹180°F) enters the internal direct contact vent condensor (D) thru the water inlent (A). Water flows thru the spray valves (B) forming a thin hollow cone pattern as it moves into the steam filled atmosphere. The preheated and partially deaerated water flows thru, across, and around the stainless steel packing rings (C). Steam enters thru the steam inlet (F) and rises up the column into the packing rings. As the steam rises thru the rings, the water drifts down, becoming deaerated in the process. All non-condensable gases exit thru the vent (F).