Mixing MDEA, TEA shows benefit for gas-sweetening operations

R. Ochieng, A.S. Berrouk, C.J. Peters

    Research output: Contribution to journalArticleAcademicpeer-review

    5 Citations (Scopus)

    Abstract

    Studies have demonstrated how mixing primary-tertiary or secondary-tertiary amines have improved the efficiency of amine-sweetening processes in terms of gas purification and process energy requirements. This article discusses the use of amine solvents that consist of two tertiary amines, methyl-diethanolamine (MDEA) and triethanolamine (TEA). A kinetic approach was used to explain results obtained from a process simulation of the Habshan gas sweetening unit in Abu Dhabi. New technologies are being implemented recently to treat highly sour natural gas with different gas sweetening processes. Many recent researches have focused on the mixing of different amine solvents and how their use affects both acid gas components' absorption and the energy price of the process. Since both MDEA and TEA are tertiary amines, this article is more concerned with the reaction mechanism associating these types of solvents. Solvent conversion or gas plant revamping is usually done in order to increase production or decrease plant operating cost.
    Original languageEnglish
    Pages (from-to)112-118
    Number of pages7
    JournalOil and Gas Journal
    Volume109
    Issue number18
    Publication statusPublished - 2011

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