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Corrosion in CO2 capture process using blended monoethanolamine and piperazine / Manjula Nainar in Industrial & engineering chemistry research, Vol. 48 N° 20 (Octobre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 20 (Octobre 2009) . - pp. 9299–9306 Titre : Corrosion in CO2 capture process using blended monoethanolamine and piperazine Type de document : texte imprimé Auteurs : Manjula Nainar, Auteur ; Amornvadee Veawab, Auteur Année de publication : 2010 Article en page(s) : pp. 9299–9306 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Monoethanolamine  Piperazine  Industrial  flue  gas  streams  Corrosion Résumé : This work explores the promise of aqueous solutions of blended monoethanolamine (MEA) and piperazine (PZ) as a cost-effective solvent for carbon dioxide (CO2) capture from industrial flue gas streams with respect to corrosion, which is regarded as one of the most severe operational problems in typical CO2 capture plants. Electrochemical corrosion experiments were carried out using the potentiodynamic polarization technique for corrosion measurements. The results show that the blended MEA/PZ solutions are more corrosive than the MEA solutions. The corrosion rate of carbon steel increases with concentration of PZ, total amine concentration, CO2 loading of solution, solution temperature, and the presence of heat stable salts. Among the tested heat-stable salts, formate is the most corrosive salt, followed by acetate, oxalate, and thiosulfate in the absence of oxygen (O2), while acetate is the most corrosive salt followed by formate, oxalate, and thiosulfate in the presence of O2. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801802a [article] Corrosion in CO2 capture process using blended monoethanolamine and piperazine [texte imprimé] / Manjula Nainar, Auteur ; Amornvadee Veawab, Auteur . - 2010 . - pp. 9299–9306. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 20 (Octobre 2009) . - pp. 9299–9306 Mots-clés : Monoethanolamine  Piperazine  Industrial  flue  gas  streams  Corrosion Résumé : This work explores the promise of aqueous solutions of blended monoethanolamine (MEA) and piperazine (PZ) as a cost-effective solvent for carbon dioxide (CO2) capture from industrial flue gas streams with respect to corrosion, which is regarded as one of the most severe operational problems in typical CO2 capture plants. Electrochemical corrosion experiments were carried out using the potentiodynamic polarization technique for corrosion measurements. The results show that the blended MEA/PZ solutions are more corrosive than the MEA solutions. The corrosion rate of carbon steel increases with concentration of PZ, total amine concentration, CO2 loading of solution, solution temperature, and the presence of heat stable salts. Among the tested heat-stable salts, formate is the most corrosive salt, followed by acetate, oxalate, and thiosulfate in the absence of oxygen (O2), while acetate is the most corrosive salt followed by formate, oxalate, and thiosulfate in the presence of O2. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801802a

Simultaneous capture of mercury and CO2 in amine - based CO2 absorption process / Zheng Cui in Industrial & engineering chemistry research, Vol. 49 N° 24 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12576–12586 Titre : Simultaneous capture of mercury and CO2 in amine - based CO2 absorption process Type de document : texte imprimé Auteurs : Zheng Cui, Auteur ; Adisorn Aroonwilas, Auteur ; Amornvadee Veawab, Auteur Année de publication : 2011 Article en page(s) : pp. 12576–12586 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Absorption  Process Résumé : The feasibility of using an amine-based carbon dioxide (CO2) capture unit for the simultaneous capture of mercury (Hg) and CO2 was studied by carrying out Hg absorption experiments with three different types of absorption solutions: mixtures of sodium chloride (NaCl) and sodium hypochlorite (NaOCl), monoethanolamine (MEA), and blended MEA and NaCl/NaOCl. The results show that it is not effective to use the amine-based CO2 unit for the concurrent capture of Hg and CO2 because the Hg absorption performance of aqueous solutions of MEA and blended MEA/NaCl/NaOCl is low. Mixtures of NaOCl and NaCl do not perform as a rate enhancer for Hg removal in the presence of MEA. The presence of Hg in the MEA solutions does not affect the CO2 absorption performance of MEA. To capture both Hg and CO2, a two-step capture process that employs an aqueous NaCl/NaOCl solution for Hg removal, prior to CO2 capture in the amine unit, might be an option. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100687a [article] Simultaneous capture of mercury and CO2 in amine - based CO2 absorption process [texte imprimé] / Zheng Cui, Auteur ; Adisorn Aroonwilas, Auteur ; Amornvadee Veawab, Auteur . - 2011 . - pp. 12576–12586. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12576–12586 Mots-clés : Absorption  Process Résumé : The feasibility of using an amine-based carbon dioxide (CO2) capture unit for the simultaneous capture of mercury (Hg) and CO2 was studied by carrying out Hg absorption experiments with three different types of absorption solutions: mixtures of sodium chloride (NaCl) and sodium hypochlorite (NaOCl), monoethanolamine (MEA), and blended MEA and NaCl/NaOCl. The results show that it is not effective to use the amine-based CO2 unit for the concurrent capture of Hg and CO2 because the Hg absorption performance of aqueous solutions of MEA and blended MEA/NaCl/NaOCl is low. Mixtures of NaOCl and NaCl do not perform as a rate enhancer for Hg removal in the presence of MEA. The presence of Hg in the MEA solutions does not affect the CO2 absorption performance of MEA. To capture both Hg and CO2, a two-step capture process that employs an aqueous NaCl/NaOCl solution for Hg removal, prior to CO2 capture in the amine unit, might be an option. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100687a