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Journal articleSadeek SA, Williams DR, Campbell KLS, 2018,
Using sodium thiosulphate for carbon steel corrosion protection against monoethanolamine and 2-amino-2-methyl-1-propanol
, INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, Vol: 78, Pages: 125-134, ISSN: 1750-5836 -
Journal articleSadeek SA, Williams DR, Campbell KLS, 2018,
Using sodium thiosulphate for carbon steel corrosion protection against monoethanolamine and methyldiethanolamine
, INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, Vol: 74, Pages: 206-218, ISSN: 1750-5836 -
Conference paperSadeek SA, Williams DR, Sedransk Campbell KL, 2017,
Use of green inhibitors and pre-treated carbon steel for reduced corrosion in post-combustion capture infrastructure
, EUROCORR 2017© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. Development of strategies to implement carbon steel (CS) infrastructure in lieu of stainless steel (SS) in post-combustion CO2 capture plants will advance wide-scale deployment of this technology. Herein two proposed techniques were investigated: 1) pre-treatment of CS with 5 M methyldiethanolamine (MDEA), 2) green (i.e. low-toxicity) inhibitors: sodium thiosulphate (STS), copper carbonate (CC), and 2-mercaptobenzimidazole (MBI). Coupons (CS) were immersed for seven days in industry standard solvent 5 M monoethanolamine (MEA) to test these proposals. Pre-treated coupons demonstrated good corrosion protection with the development of a dense layer of siderite crystals, significantly reducing oxidation of the underlying Fe substrate. Copper carbonate exhibited good inhibition performance with no surface change evident after immersion. The inhibitor STS provided some corrosion protection through surface adsorption, while MBI proved least effective. The combination of a siderite layer (generated by MDEA pre-treatment) with each inhibitor was also tested. However, the integrity of the protective siderite layer was compromised in the presence of an inhibitor, ranging from nearly complete removal to some destruction.
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Conference paperYu LCY, Sadeek S, Williams DR, et al., 2017,
Investigating the corrosion due to high capacity and uptake promoter amine blends on carbon steel
, 13th International Conference on Greenhouse Gas Control Technologies (GHGT), Publisher: ELSEVIER SCIENCE BV, Pages: 1998-2008, ISSN: 1876-6102The continued development of amine solvents for post-combustion CO2 capture is essential to the large-scale success of this technology, with particular interest in high capacity and uptake promoter blends. Some of these solutions also show reduced corrosive tendencies in the presence of carbon steel, a significantly cheaper alternative to the stainless steels generally employed. Optimization of the solution composition and reduced corrosion could yield both a decrease in capital and operating costs. Solutions (30% by weight) of monoethanolamine (MEA) or piperazine (PZ) were blended with either methyldiethanolamine (MDEA) or 2-amino-2-methyl-1-propanol (AMP). At 120 °C, Solutions containing PZ outperformed those with MEA showing the formation of good protective siderite (FeCO3) crystal layers, reducing continued oxidation of Fe from the surface and therefore corrosion.
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