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Cochrane Spray Atomizing Deaerator

The COCHRANE® Atomizing Deaerator is a two-stage
design.

In the first stage, water is sprayed in direct contact with steam and heated practically to saturation temperature. At this stage the bulk of the non-condensible gases are liberated and all released gases are discharged from the unit.

The preheated, partially deaerated water then passes to the second stage where it comes in contact with a constant high velocity steam jet for final deaeration.

The steam jet is created by a variable orifice atomizing
valve which is self-compensating to changes in load or variation in operating conditions. The energy of the steam jet breaks up the water, producing a mist or fog of finely divided particles to assure maximum surface exposure to the scrubbing steam. Any remaining gas is removed and carried to the first stage by the steam, while the deaerated water falls to the storage section.

Applications

The Spray Type Atomizing Method

Atomizing Deaerators protect power plant boilers and piping where the operating pressure is steady and the temperature rise is greater than 50° F.

The COCHRANE® Atomizing Deaerator is particularly superior in the following applications:

Marine – Providing guaranteed performance regardless of normal roll, pitch and list of the ship
Handling low pH or acid waters
Handling waters containing scale or solids due to absence of baffles or trays

Key benefits

Advantages
• Controlled steam atmosphere
• Maximum effective contact between steam and water
• Variable orifice self-regulating atomizer assures maintenance of energy required and guaranteed performance at ALL rates of flow
• Compact, easily accessible design
• Minimum headroom requirements with horizontal design

Features

Deaerator top: Welded Steel Plate, ASME stamped
Storage tanks: Welded Steel Plate, ASME stamped
Water distributor: 316 Stn. Stl. Spray Nozzle
Vent condenser: Direct Contact with Stainless Steel baffling
Design pressure: As required

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