ABB Application Description - Hydrazine, Sodium and Dissolved Oxygen Measurement. The Power of Boiler Chemistry Application Note
Summary
Optimize power plant efficiency and prevent costly outages with advanced online chemical monitoring solutions. This manual details critical water and steam chemistry management, focusing on key indicators like dissolved oxygen levels, essential for controlling corrosion and scaling. Designed for process engineers and site operators in the power generation industry, these instruments provide continuous, accurate data to maintain peak system performance, ensuring safe, reliable boiler operation and maximizing plant lifespan.
Page 1 Text Content
B M SU EM ENT & A LY TI S | PPLI ATI N NOTE
Optimizing plant efficiency through balanced boiler chemistry Hydrazine, sodium and dissolved oxygen measurement
The power of boiler chemistry
Measurement made easy
Well-balanced water chemistry is vital for optimizing the efficiency Introduction steam raising and distribution plant
Optimum positioning of analytical instruments at The absence of adequate monitoring and control key points throughout the water and steam cycle will almost certainly lead to both increase costs and and water treatment plant on modern power more frequent component failures. Evidence shows stations can provide operators with a valuable that allowing boiler chemistry to vary from specified insight into improving plant efficiency and cost limits can result in expensive plant outages, effectiveness. In this Application Note, we will look potentially incurring costs of over $1,000,000 per at the benefits of balanced boiler chemistry and day. how key contaminants can be kept in check to ensure a safe and efficient process. By measuring and monitoring not just the water in
the boiler but also the steam distribution loop and
The vast quantities of water used to produce steam other areas around a power plant, it is possible to in power generation applications means that obtain a better overview of current conditions. achieving well-balanced water chemistry is vital also When incorporated into a planned preventative in order to optimize the efficiency steam raising and maintenance program, this information can help to distribution plant. substantially reduce the risk of unplanned outages.
The elevated temperatures and pressures inherent in power generation applications greatly increase the speed of chemical reactions taking place in a boiler. The American Society of Mechanical Engineers (ASME) advises that to control deposition and corrosion in the boiler, plant operators should ensure effective monitoring of makeup water, condensate, feedwater and boiler water qualities.
Page Summary Contents For ABB Application Description - Hydrazine, Sodium and Dissolved Oxygen Measurement. The Power of Boiler Chemistry Application Note
Manual Details
| Brand | Measurement |
|---|---|
| Pages | 8 |
| File Size | 1.92 MB |
| Published | June 03, 2026 |
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Frequently Asked Questions
Why is monitoring boiler chemistry vital for efficiency?
It prevents costly issues like scaling and corrosion, which can lead to expensive plant outages potentially exceeding $1,000,000 per day.
What are the key contaminants operators must monitor?
Operators should ensure effective monitoring of makeup water, condensate, feedwater, and boiler water qualities to control deposition and corrosion.
How is dissolved oxygen measured in process feed water?
The Navigator 500 Low Level Dissolved Oxygen online analyzer uses a galvanic-type sensor to accurately measure concentrations up to 20 parts per million.
How can monitoring systems be installed with minimal disruption?
The units can simply be connected up to the power plant’s existing sampling lines, which greatly reduces time and cost.