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Boiler corrosion prevention

Peter the Plantman is doing plant maintenance and nursery in Calgary and the area around. His greenhouse is located at the Mountain View Trail west of the city of Calgary, Canada.
The Corrosion prevention at Peter the Plantman using Merus Ringsone hectar greenhouse is during the winter season home to a lot of plants and other green stuff. People who know the winter in Calgary, can imagine how much heating is required, to make the hosted plants feel comfortable.

To achieve this job, there are 5 computerized, highly efficient natural gas boiler installed. The water is heated to 80°C. Approximately 7000 liter of water is distributed in closed loops automatically. The mulitude of valves and pumps are controlled by a fully automated SCADA system. There are seven different loops, feeding different parts of the plant.

To protect this expensive boilers and equipment, it is essential to prevent boiler corrosion.

As solution for corrosion prevention the choice is to use chemical treatment. This method works in most applications rather well as corrosion protection. Depending on the technical environment where the water is used, chemical treatment might not be sufficient. For instance in closed loops, as it is in this case, there mighr be spots in the system, where the chemicals dont reach. This part of the system, is then without corrosion protection. The corrosion in such a place produce rust. This rust is spread in the whole water network and the boilers. If rust is settling on a pipe surface, in almost all kind of steel corrosion start. Even on stainless steel, which usual not rust, corrosion will start.

In our case despite all the high tech and the continous adding of expensive boiler corrosion inhibitors, the corrosion rate and herewith the iron content in the water system was never under control and always gave cause of concern.

Corrosion in water boilers strongly reduced

After Merus Rings have been installed at the loops, the corrosion rate and herewith the iron content in the water dropped continuos. Measuring the total iron in water is a good and reliable methode to see what is going on in a water system.

The Merus Rings remove the exisiting rust from the surfaces. If the rust is removed, the metallic surface will develop a coating of black magnetite.
Magnetite is stable against new corrosion and is a natural protection for the steel. Our method works almsot like a coating, which a perfect corrosion protection.

The iron content reached after a few month time a stable level below 1 ppm, which is far below the set acceptance level of 2.2 ppm.

After seeing this positive trends and result, the engineers reduced step by step the dosing of anti corrosion chemicals into the boilers. Today the system is operated, with only 1/4 of the corrosion inhibitors used before.
The method to use both, chemicals and the solutions from Merus is used by a lot of customers today. Using Merus Rings as stand alone solution is successful done also. As using no chemcials is the best method for our environment.

Of course the relevant parameter in the water are constant checked. Our customer is very satisfied with the savings and the Merus Rings. We can send you his reference letter, please send an Email.

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