Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

51318-11094-Mild steel corrosion behavior in a CO2-H2O-CHOOH environment

Picture for Mild steel corrosion behavior in a CO2-H2O-CHOOH environment
Available for download

The corrosion behavior of mild steel in a gas reforming CO2-H2O-CHOOH environment at high temperature and pressure (210°C; 3500KPa) was studied using polarization and mass loss tests as well as online corrosion monitoring techniques

 

Product Number: 51318-11094-SG
Author: Molatelo Thebe / Werner Ernst / Deon Slabbert / Roelf Sandenbergh
Publication Date: 2018
Industry: Process Industries
$0.00
$20.00
$20.00

The corrosion behavior of mild steel in a gas reforming CO2-H2O-CHOOH environment at high temperature and pressure (210°C; 3500KPa) was studied using polarization and mass loss tests as well as online corrosion monitoring techniques. Corrosion control measures in this environment including the use of stainless steels rather than carbon steel, chemical conditioning of the environment through pH stabilization, dosing of amines and organic surfactants were investigated. It was found that siderite precipitated on the steel which should provide effective corrosion protection under non-turbulent flow conditions. The ex situ measurement of corrosion rates of the steel in the water using polarization and mass loss experiments differed significantly with higher corrosion rates predicted by the electrochemical compared to mass loss measurements. The electrochemical measurements also predicted lower corrosion rates at higher flow rates and with longer exposure times. The corrosion rates measured in the presence of a filming amine were variable but more positive for the organic surfactant indicating reduced corrosion rates in all the tests. Stainless steels were more corrosion resistant in the water but application would only make sense in turbulent flow where a protective siderite layer would not form on steel. The installed online electrochemical monitoring system functioned well and confirmed the beneficial effect of the organic surfactant addition on the corrosion of the steel. The layer of siderite that precipitated on the probes would, however, reduce the response time and sensitivity of the system to process upsets and would have to be moved to a more critical location in the system where the monitoring of the corrosion induced by turbulently flowing water on the steel is more relevant from a process control point of view.

 

Key words: Corrosion, CO2, formic acid, filming amine, organic surfactant, online monitoringp

The corrosion behavior of mild steel in a gas reforming CO2-H2O-CHOOH environment at high temperature and pressure (210°C; 3500KPa) was studied using polarization and mass loss tests as well as online corrosion monitoring techniques. Corrosion control measures in this environment including the use of stainless steels rather than carbon steel, chemical conditioning of the environment through pH stabilization, dosing of amines and organic surfactants were investigated. It was found that siderite precipitated on the steel which should provide effective corrosion protection under non-turbulent flow conditions. The ex situ measurement of corrosion rates of the steel in the water using polarization and mass loss experiments differed significantly with higher corrosion rates predicted by the electrochemical compared to mass loss measurements. The electrochemical measurements also predicted lower corrosion rates at higher flow rates and with longer exposure times. The corrosion rates measured in the presence of a filming amine were variable but more positive for the organic surfactant indicating reduced corrosion rates in all the tests. Stainless steels were more corrosion resistant in the water but application would only make sense in turbulent flow where a protective siderite layer would not form on steel. The installed online electrochemical monitoring system functioned well and confirmed the beneficial effect of the organic surfactant addition on the corrosion of the steel. The layer of siderite that precipitated on the probes would, however, reduce the response time and sensitivity of the system to process upsets and would have to be moved to a more critical location in the system where the monitoring of the corrosion induced by turbulently flowing water on the steel is more relevant from a process control point of view.

 

Key words: Corrosion, CO2, formic acid, filming amine, organic surfactant, online monitoringp

Product tags
Also Purchased
Picture for Corrosion Behavior of Additively Manufactured Alloy N06210 in acidic solutions
Available for download

51318-11087-Corrosion Behavior of Additively Manufactured Alloy N06210 in acidic solutions

Product Number: 51318-11087-SG
Author: Yuzo DAIGO / Katsuo SUGAHARA / Syuhei OGOSHI / Kosuke KUWABARA
Publication Date: 2018
$20.00

Corrosion rates of low porosity AM S31603 and AM N06210 in several kinds of acidic solutions were similar to those of wrought alloys respectively, the corrosion rates of AM S31603 and AM N06210 became higher with increasing porosity of each specimen.
Picture for Corrosion Behavior of Naphthenic Acids Isolated from Vacuum Gas Oil Crude Fractions
Available for download

51318-11071-Corrosion Behavior of Naphthenic Acids Isolated from Vacuum Gas Oil Crude Fractions

Product Number: 51318-11071-SG
Author: Yathish Kurapati / Winston Robbins / Gheorghe Bota / David Young
Publication Date: 2018
$20.00

Corrosion behavior of native naphthenic acids in two VGO fractions are compared with white oil solutions of the acids isolated from them by solid phase extraction (SPE). Tests are per the in-house “pretreatment-challenge” protocol on carbon steel and 5Cr steel samples.
Picture for Comparison of corrosion behaviour of X65 steels in water-containing supercritical CO2 environments with NO2/O2
Available for download

51318-11085-Comparison of corrosion behaviour of X65 steels in water-containing supercritical CO2 environments with NO2/O2

Product Number: 51318-11085-SG
Author: Yong Hua / Richard Barker / Anne Neville
Publication Date: 2018
$20.00

 Corrosion experiments on X65 carbon steel in water-saturated supercritical CO2 (SC-CO2) and under-saturated SC-CO2 conditions at 80 bar and 35°C in the absence and presence of various combinations of NO2 and O2 ranging from 0-100 ppm and 0-1000 ppm, respectively.

 
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support