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Pre-Boiler Corrosion Control

After pretreatment, corrosive gases such as carbon dioxide and oxygen must be removed from the feed water system. Mechanical deaeration can remove these corrosive gases, especially oxygen, reducing them to levels 10 ppm. Considering the corrosive potential of oxygen such as pitting, equipment downtime and damage to the boiler system, it is highly recommend removing all trace levels of oxygen.
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NALCO Limited
Winnington Avenue
Winnington Northwich, Cheshire, UK, CW8 4DX

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Phone: +44 1606 320 281 | Fax: +44 1606 721 839 | Email: custserv.uk@nalco.com

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Chemical removal is the last opportunity to prevent oxygen entering the boiler. Nalco provides combination of liquid and solid chemical scavengers and passivators that not only prevent oxygen ingress but also help form a filming barrier that further prevents oxygen attack. Nalco solutions also have required regulatory approvals for applications where steam is used for direct food contact (FDA applications)

Nalco Oxygen Scavengers
• ELIMIN-OX™
• SUR-GARD™
• Various blends of powder and liquid sulfite suitable for your application