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Read the articleAUTHORS
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Jean LÉDION: Doctorate in metallurgical chemistry - Doctor of Physical Sciences, Paris, France
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Philippe BLÉRIOT: Water treatment trainer - Former Technical Director, Kurita France, Bordeaux, France
INTRODUCTION
Industrial water systems and water networks in the tertiary sector are subject to corrosion, scaling and biological proliferation. These phenomena generate significant maintenance costs.
The use of corrosion inhibitors helps to reduce these costs by increasing the durability of the equipment in these circuits.
Among the installations treated, the following stand out:
steam generators and steam distribution and condensate return networks;
semi-open cooling circuits (with recirculation on a cooling tower) or open circuits (with lost water);
closed circuits (heating, chilled water, closed cooling) ;
sanitary hot and cold water networks.
Equipment affected by corrosion includes water or steam distribution pipes, heat exchangers, heating surfaces and storage capacities.
This article will help network designers, thermal engineers and chemists in charge of monitoring these systems, as well as the technicians in charge of operating them, to gain a better understanding of the role and mode of action of corrosion inhibitors, as well as their application in the various water circuits encountered in industry and the tertiary sector, and their possible interaction with the other water treatment products used.
The legislative aspects of these different circuits are also discussed:
quality limits that treated water must meet depending on its use: sanitary, technical (cooling, heating) or steam production;
quality standards for inhibitors depending on the destination of the treated water ;
environmental constraints, including drought decrees.
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Corrosion inhibitors for water circuit treatment
Corrosive environment
Bibliography
Events
Events
Journées informations eaux, organized every two years by APTEN (Association des professionnels de l'eau et des nuisances) at ENSIP (École nationale supérieure d'ingénieurs de Poitiers).
Eurocorr, organized each year in a major European city by the European Corrosion Federation (EFC)....
Standards and norms
- Standard Test Method for Corrosivity of Water in the Absence of Heat Transfer (Weight Loss Method) - ASTM D2688-15e1 - 2018
- Corrosion des métaux et alliages. Vocabulaire - ISO 8044 - 2020
- Building work – Sanitary plumbing for buildings – Part 1-1-1: domestic hot and cold water supply systems – Standard technical specifications – Part 1-1-2: drainage systems – Standard technical specifications – Part 1-1-3:...
Regulations
(non-exhaustive list)
Decree of December 19, 2013 amending the decree of September 8, 1999 implementing article 11 of decree no. 73-138 of February 12, 1973, amended, implementing the law of August 1 er 1905 on fraud and falsification with regard to processes and products used for cleaning materials and objects intended to come into contact with foodstuffs,...
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
In France, manufacturers of inhibitors for water treatment are grouped together in Syprodeau (Syndicat des fabricants de produits chimiques pour le traitement et l'assainissement de l'eau):
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