Corrosion in supercritical fluids

Propp, W.A.; Carleson, T.E.; Wai, C. M.; Taylor, Patrick R.; Daehling, Kirk; Huang, Shaoping; Abdellatif, M.

doi:10.2172/274146

Cited by 16 publications

(15 citation statements)

References 2 publications

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“…Since the static continuum model has a gradient-squared free energy, one would suspect that z = 2. Indeed, scaling with z = 2 has been seen numerically in simulations of the square lattice dimer model [18].…”

Section: Introductionmentioning

confidence: 85%

“…Ref. [18] simulated the random dimer model with dimer-flip dynamics; however rather than periodic boundary conditions, that work used "Aztec diamond" boundary conditions [11] such that h(r) is fixed (and spatially nonconstant) along the edges. The continuum equations below would still predict τ (L) ∼ L 2 in that geometry, as was observed in the simulations.…”

Section: B Dynamic Scalingmentioning

confidence: 99%

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Relaxation time for a dimer covering with height representation

1997

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This paper considers the Monte Carlo dynamics of random dimer coverings of the square lattice, which can be mapped to a rough interface model. Two kinds of slow modes are identified, associated respectively with long-wavelength fluctuations of the interface height, and with slow drift (in time) of the system-wide mean height. Within a continuum theory, the longest relaxation time for either kind of mode scales as the system size N . For the real, discrete model, an exact lower bound of O(N ) is placed on the relaxation time, using variational eigenfunctions corresponding to the two kinds of continuum modes.

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Section: Introductionmentioning

confidence: 85%

Section: B Dynamic Scalingmentioning

confidence: 99%

Relaxation time for a dimer covering with height representation

1997

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“…When free water exists in the pipeline, it will be saturated with CO 2 and the corrosion rate will be significant for carbon steel because of the formation of carbonic acid (H 2 CO 3 ). In addition, even though pure, dry CO 2 is not corrosive, there are several studies which provide qualitative evidence for corrosion on carbon steel in water-saturated supercritical CO 2 phase (Russick et al, 1996;Propp et al, 1996;McGrail et al, 2009). Thus, to be able to consider the corrosion risk in such pipelines, quantitative evaluation of corrosion in both CO 2 -saturated water and water-saturated CO 2 phases will be needed.…”

Section: Introductionmentioning

confidence: 99%

Determining the corrosive potential of CO2 transport pipeline in high pCO2–water environments

Choi

Nešić

2011

International Journal of Greenhouse Gas Control

189

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“…Roberson (1973, 1975) and West (1974) also confirmed that in the shortterm exposure to dry SC CO 2 the corrosion rate of carbon steel was zero. During 200-day experiments at 9-12 MPa and 160-180°C, the corrosion rate of AISI 1080 carbon steel was only in the order of 0.01 mm/year (Propp et al, 1996). A similar result was also observed during 12 years of pipeline service with high pressure dry CO 2 , and the corrosion rate of carbon steels encountered 0.5-2.5 μm/year (Gill, 1985;Newton Jr., 1984).…”

Section: Research Progress In the Field Of Sc Co 2 Corrosionmentioning

confidence: 66%

Corrosion behaviors of steels under supercritical CO2 conditions

et al. 2015

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Carbon dioxide (CO 2 ) corrosion at low partial pressure has been widely recognized, but research on supercritical CO 2 (SC CO 2 ) corrosion is very limited. By far, investigations on steel corrosion under SC CO 2 conditions have mainly focused on the corrosion rate, structure, morphology, and composition of the corrosion scales as well as the electrochemical behaviors. It was found in aqueous SC CO 2 environment, that the corrosion rate of carbon steel was very high, and even stainless steels (13Cr and high-alloy CrNi steels) were subjected to some corrosion. Inhibitor could reduce the corrosion rate of carbon steels and stainless steels, but none of the tested inhibitors could reduce the corrosion rate of carbon steel to an acceptable value. Impurities such as O 2 , SO 2 , and NO 2 and their mixtures in SC CO 2 increased the corrosion rate of carbon steel. However, the existing studies so far were very limited on the corrosion mechanism of steels in SC CO 2 conditions. Thus, this paper first reviews the finding on the corrosion behaviors of steels under SC CO 2 conditions, points out the shortcomings in the present investigations and finally looks forward to the research prospects on SC CO 2 corrosion.

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Corrosion in supercritical fluids

Abstract: Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

Cited by 16 publications

References 2 publications

Relaxation time for a dimer covering with height representation

Relaxation time for a dimer covering with height representation

Determining the corrosive potential of CO2 transport pipeline in high pCO2–water environments

Corrosion behaviors of steels under supercritical CO2 conditions

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