An Investigation on Corrosion and Stress Corrosion Cracking initiation of a Ferritic Stainless Steel in a Tertiary Amine Solution

Document Type: Research Paper

Authors

Materials Engineering Department, Isfahan University of Technology, Isfahan, Iran

Abstract

The present study focused on stress corrosion cracking (SCC) and corrosion behavior of ferritic stainless steel (grade 430) in activated methyl diethanolamine (aMDEA) solution, which is classified as a tertiary amine. In this regard, cyclic polarization and U-bend tests were performed in CO2 loaded aMDEA with different concentrations at 25 and 70 °C to observe corrosion behavior and also the possibility of crack initiation. Based on the obtained results, it was found that the corrosion rate increased in concentrated amine solutions. Also, by increasing temperature from 25 to 70 °C both corrosion rate and susceptibility to SCC initiation were intensified. Increment of amine concentration and also increase in temperature led to more absorption of CO2, generating a more acidic solution. Overall it could be stated that while for the grade 430 stainless steel investigated in this study corrosion and cracking was observed Therefore it could be concluded that in amine-containing environments this steel is not a very suitable alternative for carbon steels, which are commonly used in these environments.   

Keywords


[1]     Roger BR, inventor; Girdler Corp, assignee. Process for separating acidic gases. United States patent US 1,783,901. 1930 Dec 2.

[2]     Soosaiprakasam IR, Veawab A. Corrosion and polarization behavior of carbon steel in MEA-based CO2 capture process. International journal of greenhouse gas control. 2008 Oct 1;2(4):553-62.

[3]     Maddox RN, Campbell JM. Gas conditioning and processing: Gas treating and sulfur recovery. Campbell Petroleum Services; 1998.

[4]     Mitra S. A Technical Report on Gas Sweetening by Amines. Petrofac Engineering India Ltd. 2015;1.

[5]     Veldman R. Alkanolamine solution corrosion mechanisms and inhibition from heat stable salts and CO2. InCORROSION 2000. 2000 Jan 1. NACE International.

[6]     Nielsen RB, Lewis KR, McCullough JG, Hansen DA. Controlling corrosion in amine treating plants. InProceedings of the Laurance Reid Gas Conditioning Conference, Norman, Oklahoma; 1995 Feb 26.

[7]     Cummings AL, Veatch FC, Keller AE. Corrosion and corrosion control methods in amine systems containing H2S. InCorrosion97 1997 Jan 1. NACE International.

[8]     Khorrami MR, Raeissi K, Shahban H, Torkan MA, Saatchi A. Corrosion behavior of carbon steel in carbon dioxide-loaded activated methyl diethanol amine solution. Corrosion. 2008 Feb;64(2):124-30.

[9]     Krzemień A, Więckol-Ryk A, Smoliński A, Koteras A, Więcław-Solny L. Assessing the risk of corrosion in amine-based CO2 capture process. Journal of Loss Prevention in the Process Industries. 2016 Sep 1;43:189-97.

[10]   Rooney PC, DuPart M. Corrosion in alkanolamine plants: causes and minimization. InCORROSION 2000 2000 Jan 1. NACE International.

[11]   Fontana MG. Corrosion engineering. Tata McGraw-Hill Education; 2005.

[12]  McGuire MF. Stainless steels for design engineers. ASM International; 2008.

[13]  Namazi F, Almasi H. Amine corrosion in gas sweetening plant: causes and minimization on real case study. InNACE International Corrosion Conference Proceedings. 2016. NACE International.

[14]  Koch GH, Brongers MP, Thompson NG, Virmani YP, Payer JH. Corrosion cost and preventive strategies in the United States. United States. Federal Highway Administration; 2002 Mar 1.

[15]  Garverick L, editor. Corrosion in the petrochemical industry. ASM international; 1994.

[16]  Panahi H, Eslami A, Golozar MA. Corrosion and stress corrosion cracking initiation of grade 304 and 316 stainless steels in activated Methyl Diethanol Amine (aMDEA) solution. Journal of Natural Gas Science and Engineering. 2018 Jul 1;55:106-12.

[17]  Tao X, Li C, Han L, Gu J. Microstructure evolution and mechanical properties of X12CrMoWVNbN10-1-1 steel during quenching and tempering process. Journal of Materials Research and Technology. 2016 Jan 1;5(1):45-57.

[18]  Hartono A, Saeed M, Kim I, Svendsen HF. Protonation constant (pKa) of MDEA in water as function of temperature and ionic strength. Energy Procedia. 2014 Jan 1;63:1122-8.

[19]  Kaesche H. Corrosion of metals: physicochemical principles and current problems. Springer Science & Business Media; 2012 Dec 6.

[20]  Charbonnier JC, Noual P. The influence of molybdenum on the behaviour of 17Cr pure ferritic steels in a 20% HCOOH medium at 70 ° C. Corrosion Science. 1977 Jan 1;17(12):1009-14.

[21]  Panahi H, Eslami A, Golozar MA. Corrosion and stress corrosion cracking initiation of grade 304 and 316 stainless steels in activated Methyl Diethanol Amine (aMDEA) solution. Journal of Natural Gas Science and Engineering. 2018 Jul 1;55:106-12.

[22]  Kohl AL, Nielsen R. Gas purification. Elsevier; 1997 Aug 28.

[23]  Jones DA. Principles and prevention of corrosion. 2nd edition. vol. 5. New Jersey: Prentice Hall; 1996.

[24]  Revie RW. Corrosion and corrosion control: an introduction to corrosion science and engineering. John Wiley & Sons; 2008 May 16.