Optimization of Mechanical & Chemical Deaeration for Steam Plants (TCO)

Webinar    13-Jul-2021    1:00 pm - 4:00 pm West Kazakhstan Time (GMT+5)


After participating in this course, you will be able to do the following:

  • Understand the need for deaeration and degasification of water in industrial plants
  • Assess the consequences of poor dissolved oxygen removal
  • Know the underlying physical laws governing the deaeration of water
  • Learn about the multiple sources of oxygen in industrial steam plant
  • Know the different types of mechanical deaeration equipment (static & thermal)
  • Know the various industry guidelines pertaining to oxygen control (ASME, EPRI, etc.)
  • Understand key design factors in deaerators
  • Understand the critical parameters for deaerator performance
  • Learn about the risk of deaerator cracking
  • Troubleshoot the mechanical/thermal aspects of a deaerator
  • Troubleshoot the chemical deaeration stage
  • Select the best choice of reducing agent/oxygen scavenger for your application
  • Understand the advantages & disadvantages of a wide variety of oxygen scavengers
  • Optimize the chemical feed points for oxygen scavengers
  • Know the main inspection items in a deaerator
  • And much more




Deaeration is primarily the mechanical removal of dissolved gases from a fluid, in this case, water. There are many industrial processes that require gas-free water. Deaerators are commonly used in steam plants to heat boiler feedwater sufficiently to expel dissolved gases such as oxygen and dissolved carbon dioxide.  Deaerators have a very significant impact on the operating costs of every steam plant – they are often large users of steam and their poor performance may also raise the risk of a far more insidious plant-wide problem – corrosion. Boiler feedwater normally contains two harmful dissolved gases – oxygen and carbon dioxide. The purpose of deaeration is to remove these gases before they are liberated in the boiler. This reduces corrosion in the pre-boiler, boiler, steam lines, condensate lines, and heat transfer equipment.

The best performance guarantee from a deaerator manufacturer is 0.005 cc/L of oxygen. Residual oxygen in the water from mechanical deaeration is subsequently removed by chemical deaeration, that is through the use of a chemical oxygen scavenger. When mechanical deaeration is not available, chemical deaeration may sometimes be adequate by itself, but for the large majority of systems, a combination of deaeration methods is employed.

This 3-hour webinar covers many key design and operational aspects of both mechanical and chemical deaeration. The focus is on the optimization and troubleshooting of mechanical thermal deaerators as well as the proper application of a myriad of reducing agents (oxygen scavengers), including sulfite salts and volatile organic products.  This course also addresses many other topics such as monitoring techniques, the safety-related problem of deaerator cracking and the selection of the optimum chemical oxygen scavenger product.




  • Plant Managers
  • Operation Managers
  • Maintenance Managers
  • Maintenance Engineers
  • Plant Engineers
  • Utility Engineers
  • Technologists
  • Project Managers in the Chemical, Petrochemical, Chemical Processing and other industries
  • Reliability Engineers
  • Stationary Engineers / Plant Operators
  • Risk Management Staff
  • Anyone involved in Plant Asset Management
  • Anyone involved in industrial steam generation systems & steam turbines


  • Objectives of deaeration and degasification in industrial water treatment systems
  • The physical laws governing the removal of gases from water
  • Mechanical Deaeration
    • Deaerator operational principles and design criteria versus actual conditions
    • Types of deaerators (vacuum, open heaters, condenser hotwell, deaerating heaters, deaerators of spray, spray-tray, and spray-scrubber sub-types)
    • Efficiencies of DA equipment
    • Thermal mechanical deaerator
      • Key design features for optimum performance
      • Understand the OEM guarantee of performance
      • Causes of poor performance
      • Optimization
      • Steam vent rates vs. DA rating
      • Troubleshooting Thermal Mechanical Deaerators
      • Problem of Deaerator Cracking
  • Chemical Deaeration
    • Types of reducing agents (oxygen scavengers)
      • Non-volatile vs. volatile
      • Inorganic vs. organic
      • Factors to consider when selecting an oxygen scavenger (pros & cons of each)
      • When to use (or not) an Inorganic vs. Organic scavenger
  • Optimizing the chemical feed points
  • Best practices in the feed of oxygen scavengers
  • Troubleshooting oxygen scavengers
  • Residual dissolved oxygen testing


There will be one (1) 15-minute break

The course fee is USD $185.00.

You can pay by credit card using either PayPal or Stripe. Click here to learn more.

All bookings are subject to acceptance of our Privacy Policy, Terms & Conditions and Cancellation & Refunds Policy.

Online Courses / Webinars Withdrawal, Cancellation and Rescheduling

By registering for an online training course or webinar organised by Industrial Water Treatment Academy (iwtA) you agree to the following Training Cancellation policy as well to our general Terms and Conditions and Privacy Policy (both available on our website iwtacademy.com), regardless of whether such registration was made through iwtacademy.com website or via email, telephone, or any other means.

If you wish to withdraw from an online training event (online course or webinar), you must first advise us by email, and include the official payment receipt.  Our policies regarding refunds are:

  • You may cancel online-based training bookings at any time.
  • If you cancel more than 10 (ten) business days before the training event:  the full amount will be refunded minus a US$75.00 and a US$35.00 administration charge for an online course and webinar, respectively.
  • If you cancel between 3 and 9 business days before the training event: 50% of the full amount paid will be refunded.
  • If you cancel less than 3 (three) business days in advance:  you can request a non-refundable credit, valid for 12 months from the date of the original payment, which can be applied to a different iwtA online course or webinar. Credits are transferable within your company – simply contact the Registrar at info@iwtacademy.com with your request giving the name and email address of the co-worker taking your place.
  • If an instructor is not available due to unforeseen circumstances, another instructor of equal ability (decided at the sole discretion of iwtA) will be substituted whenever possible; if a suitable instructor is unavailable, the course will be cancelled and rescheduled. iwtA reserves the right to cancel courses, change instructors, or change course content. If iwtA has to cancel a course due to unforeseen circumstances, a full refund will be issued to the registrant.
  • No training booking will be final and confirmed until the full amount is paid either by credit card or bank transfer.

A Certificate of Completion will be awarded to all participants that attend a given online course or webinar in its entirety.

The Industrial Water Treatment Academy (iwtA) is currently in the initial stages of seeking an ANSI-accredited international standard certification in Continuing Education that will enable iwtA to award Continuing Education Units (CEUs) to its course participants. We expect this milestone to be reached by 2023.

You must make the payment through the intermediary (Paypal or Stripe) in USD or other foreign currency subject to exchange rates and/or service commissions.

Deverá efectuar o pagamento ao intermediário (Paypal ou Stripe) em USD ou outra moeda estrangeira sujeita às taxas de câmbio e/ou comissões pelo serviço.

Refunds and cancellation policy


Optimization of Mechanical & Chemical Deaeration for Steam Plants (TCO)

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