Oxygen scavengers - The chemistry of sulfite under hydrothermal conditions
Control of oxygen corrosion is critical to the reliability of steam generator systems. Mechanical deaeration and chemical oxygen scavenging effectively reduce oxygen levels in boiler feedwater systems. This paper reviews the use of sulfites to reduce oxygen and provide corrosion control throughout the boiler feedwater circuit as well as mechanical and operational oxygen reduction methods. The mechanism of oxygen pitting, electrochemical reactions, and the basis of operation of mechanical deaeration are discussed. Estimating techniques for the amount of steam required and a deaerator troubleshooting guide are included. The chemistry of sulfites is covered in detail. Also included are a functional definition of chemical oxygen scavengers and a general discussion of their various types.
- Research Organization:
- Betz Labs., Inc., 4636 Somerton Rd., Trevose, PA 19047
- OSTI ID:
- 6506616
- Journal Information:
- Mater. Performance; (United States), Journal Name: Mater. Performance; (United States) Vol. 26:3; ISSN MTPFB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
421000* -- Engineering-- Combustion Systems
BOILERS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CORROSION
CORROSIVE EFFECTS
DEAERATORS
ELECTROCHEMISTRY
ELEMENTS
FEEDWATER
HYDROGEN COMPOUNDS
KINETICS
NONMETALS
OPERATION
OXYGEN
OXYGEN COMPOUNDS
PITTING CORROSION
REACTION KINETICS
REDUCING AGENTS
RELIABILITY
STEAM GENERATORS
SULFITES
SULFUR COMPOUNDS
VAPOR GENERATORS
WATER