Experimental study on CO 2 solubility in aqueous Piperazine/alkanolamines solutions at stripper conditions

Shota Inoue, Takuya Itakura, Takao Nakagaki, Yukio Furukawa, Hiroshi Sato, Yasuro Yamanaka

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    8 Citations (Scopus)

    Abstract

    Vapor liquid equilibrium (VLE) experiments using pressurized vessel operated at wide range of temperatures from 40 °C to 120 °C were conducted with four binary solutions of Piperazine (PZ) and alkanolamines, which are 2- Isopropylaminoethanol (IPAE), Monoethanolamine (MEA), Diethanolamine (DEA) and Methyldiethanolamine (MDEA). Effective CO 2 loadings of some PZ based binary solutions, which meant the difference between the CO 2 loadings at the consistent absorber and stripper conditions, increased in comparison with the PZ only solution and especially, PZ/MDEA showed the largest effective CO 2 loading. CO 2 loadings at the stripper condition did not depend on additive amount of MDEA to PZ and was the same CO 2 loading as PZ only solution, while those increased with increase in MDEA concentration at the absorber condition. According to the reaction products analysis for PZ/MDEA samples operated at different temperature by using 13C-NMR spectroscopy, the bicarbonate in the solution decreased significantly with increase in temperature, but the PZ carbamate dissociated CO 2 much less than the carbamate even at 120 °C.

    Original languageEnglish
    Title of host publicationEnergy Procedia
    Pages1751-1759
    Number of pages9
    Volume37
    DOIs
    Publication statusPublished - 2013
    Event11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 - Kyoto, Japan
    Duration: 2012 Nov 182012 Nov 22

    Other

    Other11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012
    CountryJapan
    CityKyoto
    Period12/11/1812/11/22

    Fingerprint

    Alkanolamines
    Solubility
    Reaction products
    Phase equilibria
    Temperature
    Nuclear magnetic resonance spectroscopy
    Experiments

    Keywords

    • Amine absorbent
    • CO caputure
    • Piperazine
    • Stripper
    • VLE

    ASJC Scopus subject areas

    • Energy(all)

    Cite this

    Experimental study on CO 2 solubility in aqueous Piperazine/alkanolamines solutions at stripper conditions . / Inoue, Shota; Itakura, Takuya; Nakagaki, Takao; Furukawa, Yukio; Sato, Hiroshi; Yamanaka, Yasuro.

    Energy Procedia. Vol. 37 2013. p. 1751-1759.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Inoue, S, Itakura, T, Nakagaki, T, Furukawa, Y, Sato, H & Yamanaka, Y 2013, Experimental study on CO 2 solubility in aqueous Piperazine/alkanolamines solutions at stripper conditions in Energy Procedia. vol. 37, pp. 1751-1759, 11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012, Kyoto, Japan, 12/11/18. https://doi.org/10.1016/j.egypro.2013.06.051
    Inoue, Shota ; Itakura, Takuya ; Nakagaki, Takao ; Furukawa, Yukio ; Sato, Hiroshi ; Yamanaka, Yasuro. / Experimental study on CO 2 solubility in aqueous Piperazine/alkanolamines solutions at stripper conditions Energy Procedia. Vol. 37 2013. pp. 1751-1759
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    AU - Itakura, Takuya

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    AU - Sato, Hiroshi

    AU - Yamanaka, Yasuro

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