New Oxygen Scavenger for Boiler Systems

Abstract Dissolved oxygen is a serious cause of corrosion in water and steam cycles of boiler plants. The removal of dissolved oxygen from the feedwater is partially accomplished by either vacuum or thermal deaeration, or both. Since complete removal cannot be effected by these means, further removal of oxygen through the use of a chemical scavenger has been a customary practice. Hydrazine and sodium sulfite are popular as oxygen scavenging agents for steam generating plants. The present paper describes the use of a new oxygen scavenger for the removal of dissolved oxygen in the boiler water. The new scavenger has low toxicity, does not contribute solids, and protects both boiler water and steam condensate systems.