Kinetics of the Steel Corrosion in field waters

2008 ◽  
Vol 59 (4) ◽  
Author(s):  
Vasile Dumitrescu ◽  
Maria Moraru ◽  
Ileana Camenita ◽  
Ioan Viorel Branzoi ◽  
Alexandra Schiopescu
Keyword(s):  
Kinetic Equation ◽  
Natural Gas ◽  
Steel Corrosion ◽  
Corrosion Rates ◽  
Experimental Researches ◽  
Kinetics Of ◽  
Dynamics Process

This paper presents the experimental researches regarding the corrosion of some steel materials in field waters attending natural gas. The corrosion rates of tested steels are determined and the results are discussed. It is found that the dynamics process is described by an exponential kinetic equation.

scholarly journals The effect of volatile organic acids and CO2 on the corrosion rate of carbon steel from a Top-of-Line-Corrosion (TLC) perspective

2021 ◽  
Vol 1201 (1) ◽  
pp. 012079
Author(s):  
S B Gjertsen ◽  
A Palencsar ◽  
M Seiersten ◽  
T H Hemmingsen
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Organic Acid ◽  
Carbonic Acid ◽  
Acid Corrosion ◽  
Iron Concentration ◽  
Critical Factor ◽  
Steel Corrosion ◽  
Carbon Steels ◽  
Corrosion Rates

Abstract Models for predicting top-of-line corrosion (TLC) rates on carbon steels are important tools for cost-effectively designing and operating natural gas transportation pipelines. The work presented in this paper is aimed to investigate how the corrosion rates on carbon steel is affected by acids typically present in the transported pipeline fluids. This investigation may contribute to the development of improved models. In a series of experiments, the corrosion rate differences for pure CO2 (carbonic acid) corrosion and pure organic acid corrosion (acetic acid and formic acid) on X65 carbon steel were investigated at starting pH values; 4.5, 5.3, or 6.3. The experiments were conducted in deaerated low-salinity aqueous solutions at atmospheric pressure and temperature of 65 °C. The corrosion rates were evaluated from linear polarization resistance data as well as mass loss and released iron concentration. A correlation between lower pH values and increased corrosion rates was found for the organic acid experiments. However, the pH was not the most critical factor for the rates of carbon steel corrosion in these experiments. The experimental results showed that the type of acid species involved and the concentration of the undissociated acid in the solution influenced the corrosion rates considerably.

scholarly journals The Modeling and the Experimental Researches of the Microwave-Measuring Transformer of the Humidity of Natural Gas

2021 ◽  
Vol 154 (1) ◽  
pp. 7-13
Author(s):  
Yo.Yo. Bilynskyi ◽  
◽  
B.P. Knysh ◽  
D.V. Novytskyi ◽  
◽  
...  
Keyword(s):  
Natural Gas ◽  
Experimental Researches

Kinetics Studies of Methylene Blue Adsorption onto Spherical Chitosan Resin

2011 ◽  
Vol 233-235 ◽  
pp. 567-570
Author(s):  
Juan Qin Xue ◽  
Wei Bo Mao ◽  
Dan Dan Wen ◽  
Jing Xian Li ◽  
Yu Jie Wang
Keyword(s):  
Methylene Blue ◽  
Kinetic Equation ◽  
Ionic Strength ◽  
Adsorption Process ◽  
Sorption Kinetics ◽  
Methylene Blue Adsorption ◽  
Initial Concentration ◽  
Kinetics Studies ◽  
Kinetics Of ◽  
Chitosan Resin

Investigated the sorption kinetics of methylene blue on spherical chitosan resin. Studied the influences of ionic strength, pH， initial concentration on the adsorption process. The adsorption of methylene blue increases with the decreasing ionic strength and the increasing pH and the initial concentration of the system. Furthermore, the adsorption process correspondes with Lagergren pseudo-second kinetic equation and the finess (R2) of the model was above 0.99.

scholarly journals Effect of HCO3− on electrochemical kinetics of carbon steel corrosion in CO2-saturated brines

2018 ◽  
Vol 290 ◽  
pp. 626-638 ◽  
Author(s):  
Ruishu F. Wright ◽  
Edward R. Brand ◽  
Margaret Ziomek-Moroz ◽  
Joseph H. Tylczak ◽  
Paul R. Ohodnicki
Keyword(s):  
Carbon Steel ◽  
Steel Corrosion ◽  
Electrochemical Kinetics ◽  
Kinetics Of

Rust layer growth and modification by a tannin-based mixture for lowering steel corrosion rates in neutral saline solution

2020 ◽  
Vol 55 (5) ◽  
pp. 372-380 ◽  
Author(s):  
Stojan Božović ◽  
Tena Gvozdanović ◽  
Ana Kraš ◽  
Veselinka Grudić ◽  
Stanislav Kurajica ◽  
...  
Keyword(s):  
Saline Solution ◽  
Steel Corrosion ◽  
Layer Growth ◽  
Rust Layer ◽  
Corrosion Rates

scholarly journals The effect of SO3-Ph-BTBP on stainless steel corrosion in nitric acid

Nukleonika ◽  
2015 ◽  
Vol 60 (4) ◽  
pp. 865-869
Author(s):  
Richard J. Wilbraham ◽  
Colin Boxall
Keyword(s):  
Stainless Steel ◽  
Nitric Acid ◽  
Stainless Steels ◽  
Steel Corrosion ◽  
Reductive Dissolution ◽  
Extraction Kinetics ◽  
Weak Absorption ◽  
Solution Interface ◽  
Nuclear Reprocessing ◽  
Kinetics Of

Abstract SO3-Ph-BTBP is a hydrophilic tetra-N-dentate ligand proposed for An(III)/Ln(III) separation by solvent extraction, and a candidate for use in future advanced reprocessing schemes such as GANEX and SANEX. We present the first study of the effect of SO3-Ph-BTBP on the corrosion behavior of stainless steels. Specifically, studies have been performed using steels and conditions equivalent to those found in relevant nuclear reprocessing flow sheets. SO3-Ph-BTBP has been shown to have little effect on either steel passivation or reductive dissolution. However, if driven cathodically into a region of hydrogen evolution at the electrode surface or conversely anodically into a region of transpassive dissolution, observed currents are reduced in the presence of SO3-Ph-BTBP, suggesting corrosion inhibition of the steel potentially through weak absorption of a SO3-Ph-BTBP layer at the metal-solution interface. The lack of any observed corrosion acceleration via complexation of Fe3+ is surprising and has been suggested to be due to the slow extraction kinetics of SO3-Ph-BTBP as a result of a requirement for a trans- to cis-conformational change before binding.

Kinetics and mechanism of destruction of cobalt phthalocyanine derivatives in aqueous solutions

2000 ◽  
Vol 04 (07) ◽  
pp. 684-688 ◽  
Author(s):  
S. A. BORISENKOVA ◽  
E. P. DENISOVA ◽  
E. A. BATANOVA ◽  
E. G. GIRENKO ◽  
O. L. KALIYA ◽  
...  
Keyword(s):  
Kinetic Equation ◽  
Aqueous Solutions ◽  
Partial Pressure ◽  
Initial Solution ◽  
Cobalt Phthalocyanine ◽  
Oxidative Destruction ◽  
Partial Pressure Of Oxygen ◽  
Concentration Interval ◽  
Kinetics Of ◽  
Bleaching Rate

The kinetics of the oxidative destruction of cobalt phthalocyanine derivatives in aqueous solutions has been investigated in the concentration interval 10−4–10−5 M as a function of the concentration of alkali and the partial pressure of oxygen in the system. The kinetic equation for the initial solution bleaching rate is obtained. A mechanism of cobalt phthalocyanine destruction involving an intermediate Co (II) → Co (III) oxidation step is suggested.

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