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Organic salts as kinetic and thermodynamic inhibitors for CO2 hydrate precipitation
Pontificia Univ Catolica Rio Grande do Sul, Brazil.
Pontificia Univ Catolica Rio Grande do Sul, Brazil.
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.ORCID iD: 0000-0003-4796-8177
Co INDPROS, Brazil.
2020 (English)In: Journal of Natural Gas Science and Engineering, ISSN 1875-5100, E-ISSN 2212-3865, Vol. 82, p. 1-8, article id 103508Article in journal (Refereed) Published
Abstract [en]

In this work, we opted for the use of CO2 gas for the respective experiments, due to its greater solubility in water when compared to hydrocarbons, as well as possible applications in pre-salt oil fields (such as the Libra field), where the amount of CO2 varies between 40 and 80%, obstructing the pipelines in the CO2 capture stage. In this context, the objective of this work is to obtain organic salts of different amino acids and alcohols (biodegradable and environmentally friendly compounds) and to test them in a pilot gas hydrate synthesis plant, with the goal of evaluate the inhibition potential of these compounds for CO2 hydrates. The organic compounds were synthesized with good yields and were characterized by NMR (C-13 and H-1) and elementary analysis. The compounds with greater hydrophilic character showed thermodynamic inhibition effects for the tested condition, while the hydrophobic compounds showed kinetic inhibition effects. The fundamental knowledge and the mechanism on the kinetic and/or thermodynamic inhibition of CO2 hydrates from organic salts obtained in this study are beneficial and extremely important, given the good results presented and the unprecedented application of the tested compounds.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 82, p. 1-8, article id 103508
Keywords [en]
Hydrates, Inhibitors, Organic salt
National Category
Geochemistry
Research subject
Natural Science
Identifiers
URN: urn:nbn:se:lnu:diva-98376DOI: 10.1016/j.jngse.2020.103508ISI: 000571076800005Scopus ID: 2-s2.0-85089202218OAI: oai:DiVA.org:lnu-98376DiVA, id: diva2:1474289
Available from: 2020-10-08 Created: 2020-10-08 Last updated: 2021-05-06Bibliographically approved

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Ketzer, João Marcelo

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