Deaerators

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Deaerators
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newterra is the name behind the best brands in deaerators: COCHRANE, Chicago Heater and Belco. We manufacture deaeration solutions to serve a broad client base – supplying over 105 million gallons of high purity water a day to maximize the efficiency and lifespan of their boiler systems.

The first and last word in deaeration

Overview

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Treatment Targets:

Dissolved Oxygen, Dissolved Gases
No other company has a longer history in the deaerator business than newterra. High purity water pioneers, including COCHRANE, Chicago Heater and Belco Water, are part of our 150+ year heritage. Today, under the newterra name, that experience is integrated into our robust Parallel Downflow, Counterflow and Spray Atomizing deaerators. newterra also engineers deaeration equipment for Heat Recovery Steam Generators (HRSG), as well as fully skidded, packaged solutions, vacuum deaerators and forced draft degasifiers. These equipment solutions are well supported by our dedicated Aftermarket Parts & Service teams.
Our significant global installed base of deaeration equipment includes power generation plants, institutional clients and manufacturers who utilize steam in their production. They look to our Industry Certifications (CRN, ASTM, NACE, HEI DA Standard and ASME) and count on the newterra Performance Guarantee.

Parallel Downflow Deaerators

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Operation:

Water enters the preheating compartment and is heated to saturation temperature where most of the non-condensable gases are removed before the water enters the trays. Heated water passes through newterra's patented Lock-N-Load® 316 SS spray nozzles to the tray section. Water seals prevent bypassing of steam into the preheating compartment and ensure non-condensable gases in the preheating section do not enter the tray compartment. 
Water passes downward through the one-piece, Type 430 SS pan-type trays to complete final deaeration and then goes to storage. Steam enters at the inlet nozzle and passes through ports in the tray compartment to the space above the trays, flowing downward with the water through the tray section. This action provides highly efficient distribution over the trays to maximize surface contact between steam and water.

Advantages

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Perform equally well between the extremes of 100% make-up water (<50˚ F) and mostly hot condensate as well as substantial flashing returns
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Handle higher steam flows through the tray stack
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Requires the lowest temperature differential of any deaerator to meet operating warranty (typically 20˚F or less)
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Optimized mixing and higher steam velocity maximizes gas removal efficiency

Counterflow Deaerators

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Operation:

Incoming water flows through newterra's patented Lock-N-Load® 316 SS spray nozzles and enters the vent condensing chamber as a thin-walled, hollow cone spray pattern. Latent heat transfer is instantaneous because of the intimate water-to-steam exposure. As the water reaches the tray stack, its temperature is within 2° F of the saturated steam temperature, and virtually all dissolved oxygen and free carbon dioxide have been removed.
Nearly all of the steam has now condensed, permitting the non-condensible gases to be carried through the vent by the remaining steam, exiting as a plume. The preheated water is distributed over the 430 SS, pan-type trays (riveted construction) and flows down over staggered pans in the trays, making its way through pure steam flowing in the opposite direction. The water leaving the bottom layer of trays is fully deaerated.

Advantages

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Cost competitive for large capacity applications
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Highly reliable for attaining specified results over a varying load range
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Simplicity and rugged design offers cost savings for many applications, especially where a high percentage of condensate returns are introduced
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Easy access for spray nozzle inspection
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Meets HEI requirements

Spray Atomizing Deaerators

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Operation:

newterra's 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 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.

Advantages

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Ideal for Marine applications because they provide guaranteed performance regardless of normal roll, pitch or list of the ship
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Controlled steam atmosphere
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Well suited to the handling of low pH or acid waters, as well as those containing scale or solids (due to the absence of baffles or trays)
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Self-regulating, variable orifice atomizer maintains required energy for guaranteed performance at all flow rates
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Compact and easily accessible – horizontal design minimizes headroom requirements
Connect with us today about all your water treatment needs.