Chemical cleaning of a boiler - CTP environnement group

An oil refiner recognised the need for chemical cleaning of a water side steam generation boiler as part of its maintenance programme.

After analysing the residues, CTP environnement suggested the following successive treatments for this chemical cleaning operation:

Decoppering to remove all the copper oxides originating from air cooled condenser tubes
Chemical cleaning to remove the layer of iron oxide (magnetite) accumulated over time
Pre-passivation and passivation to re-create a necessary new passive layer of iron oxide (maghemite).

Clogging of the boiler proved to be uniform in terms of chemical composition but was unevenly distributed in various areas.

Whilst control of the chemistry is important in chemical cleaning, some consideration should be given to the engineering aspects of the procedure to ensure the correct exposure of residues to solutions, above all for equipment not designed to be cleaned by circulation using an external pumping unit.

CTP environment’s chemical and hydraulic expertise enabled this operation to be completed successfully, to the client’s entire satisfaction on both a technical and organisational level.

News

23rd May 2025

Water Equipment Show 2025

We exhibited for the first time in the Water Equipment Show, the leading event of UK water industry at the Telford internationel Centre on May 15th 2025.

Our teams came to meet attendees from the UK's utility and water supply companies, including the Environment Agency and a wide range of senior decision-makers from across the water and wastewater industries with an interest in mechanical and electrical equipment and associated services.

News

16th April 2025

Victory at the V.I.E Grand Prix Americas 2025

To accelerate its international growth, CTP environnement group has embraced the V.I.E program, led by Business France and backed by the French government. For several years, qualified young talents have been strengthening our teams in subsidiaries located in Singapore, Canada, the USA, and more recently, the United Kingdom.

In our American subsidiary based in Houston, Neyl stood out brilliantly by winning first place at the V.I.E Grand Prix Americas 2025, an award that recognized 4 winners out of 97 candidates. His original and impactful video—highlighting France as THE go-to destination for innovation and investment—made all the difference.

News

31st March 2025

INTERSOL 2025

We took part for the first time in the 24th edition of INTERSOL, the International Congress and Exhibition on Soils, Sediments and Water.

Our teams came to meet the leading players in the field of polluted sites and soils (PSS), to compare their challenges and solutions, and to respond in the best possible way.