On-Line Monitoring Using Electrochemical Noise Measurement in CO-CO -H O Systems

HJ DeBruyn; K Lawson; EE Heaver

doi:10.1520/STP37962S

SYMPOSIA PAPER Published: 01 January 1996

STP37962S

On-Line Monitoring Using Electrochemical Noise Measurement in CO-CO -H O Systems

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The stress corrosion cracking (SCC) susceptibility of carbon steel extends over a narrow range of potentials in environments that contain a mixture of wet carbon monoxide-carbon dioxide (CO-CO₂) gas. Normal fluctuations in plant operation may cause movement in and out of this range of potentials. Stress corrosion cracking in this case is discontinuous, and an opportunity exists to prevent it by process control.

Electrochemical noise measurement, because of its capability for operation in thin film condensate conditions, is an attractive technique for monitoring corrosion in wet CO-CO₂ systems. Laboratory tests and plant trials were carried out to determine if electrochemical noise measurement could be used to characterize periods of SCC.

Author Information

DeBruyn, HJ

Mossgas (Pty) Ltd., Mossel Bay, Republic of South Africa

Lawson, K

Real Time Corrosion Management Ltd., Manchester, UK

Heaver, EE

Real Time Corrosion Management Ltd., Manchester, UK

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Details

Developed by Committee: G01

Pages: 214–229

DOI: 10.1520/STP37962S

ISBN-EB: 978-0-8031-5562-6

ISBN-13: 978-0-8031-2032-7

On-Line Monitoring Using Electrochemical Noise Measurement in CO-CO -H O Systems

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