International Sugar Journal

Influence of ethanol and sulphite dosing on oxygen scavenging in sugar mill boiler feedwater* [Full subscriber]

Abstract Reducing corrosion in boiler feed water circuits is important to maintaining efficient thermal performance as well as minimising maintenance. Corrosion is typically controlled in boiler feed water through the addition of oxygen scavengers such as sodium sulphites, which act to reduce the dissolved oxygen (DO) concentration in the water. However, poor dissolved oxygen removal when using sulphite oxygen scavengers has been observed throughout the North Queensland sugar industry (Rodman et al., 2016). The cause of reduced oxygen scavenging capabilities of sodium sulphite is hypothesised to be a result of organic contaminants present in sugar mill boiler feedwater, such as…

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