Yellow Metal Corrosion Inhibitor Controls Midwest Refinery Corrosion Under Heavy Chlorination
Due to stricter regulations on biocontrol compliance in
cooling tower water systems, a Midwest refinery experienced increased copper
and mild steel corrosion rates. The refinery actively strives to protect the
public, minimize potential risks to the environment, and safeguard the health
and well-being of employees and contractors while sheltering assets from damage
or loss. With increased chlorination in the cooling systems, the impact on
admiralty brass and associated mild steel corrosion was recognized by the
refinery. The refinery’s management turned to Nalco Water to help mitigate
any potential damage.
The new robust treatment, together with the rapid test method, delivered on the requirement to cost-effectively improve asset integrity and safety on-site.
Having recognized the challenges brought by increased
chlorination, Nalco Water developed a yellow metal corrosion inhibitor, a safer chemistry to deliver
asset integrity under harsh oxidizing conditions.
The technology has been specifically designed as an
environmentally friendly method to control yellow metal corrosion in highly
oxidizing environments. Coupled with a rapid test method, this patent pending chemistry allows for swift and accurate adjustments, mitigating potential damage from
The inclusion of the corrosion inhibition technology not only improved yellow metal
corrosion, but soluble copper levels and mild corrosion as well. It succeeded in safely controlling admiralty brass heat exchanger
corrosion and limiting any subsequent galvanic corrosion potential on critical
mild steel heat exchangers.
The new robust treatment, together with the rapid test
method, delivered on the requirement to cost-effectively improve asset
integrity and safety on-site.