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Four Cochrane counterflow deaerator units sit outside an industrial or manufacturing warehouse consisting of horizontally positioned metal vessels with numerous support points

Counterflow Deaerators

Counterflow Deaerators are built for reliability in large-capacity industrial applications.  Simplicity and a rugged design offer cost savings over a varying load range, especially where a high percentage of condensate returns are introduced.  They are American Society of Mechanical Engineers (ASME) stamped and meet Heat Exchange Institute (HEI) requirements.

Four Cochrane counterflow deaerator units sit outside an industrial or manufacturing warehouse consisting of horizontally positioned metal vessels with numerous support points

Product Overview

Newterra’s Counterflow Deaerators epitomize cutting-edge technology in the removal of dissolved gases, primarily oxygen and carbon dioxide, from boiler feedwater to prevent corrosion and enhance the efficiency of steam-generating systems. Featuring a counterflow design, these deaerators maximize contact between water and steam, facilitating exceptional gas removal efficiencies. Tailored for demanding industrial applications, they ensure a consistent supply of high-quality, deaerated water, vital for optimizing the performance and longevity of boilers and steam infrastructure. Newterra’s Counterflow Deaerators are recognized for their operational reliability, energy efficiency, and ease of integration into existing systems, making them an essential component in maintaining the health and efficiency of industrial boiler operations.

Features

  • Trays: Type 430 stainless steel (SS), pan type, riveted construction 
  • Water distributor: 316 SS. Newterra Lock-N-Load Spray Nozzles 
  • Design pressure: As required 
  • Deaerator top: Welded Steel Plate, ASME stamped 
  • Storage tanks: Welded Steel Plate, ASME stamped 
  • Vent condenser: Direct Contact Type with Stainless Steel baffling
  • Deaerating Trays: Type 430 SS, assembled with stainless steel rivets. Each tray assembly consists of eight or twelve tray channels arranged in two or three staggered tiers of four each, depending on the application.

Technical Specifications

Incoming water flows through the 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 trays 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 the trays is fully deaerated.

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