Characterization of inhibition mechanisms of kinetic hydrate inhibitors using ultrasonic test technique

Jinhai Yang, Bahman Tohidi

    Research output: Contribution to journalArticlepeer-review

    97 Citations (Scopus)

    Abstract

    The inhibition characteristics of kinetic hydrate inhibitors were experimentally investigated by utilization of the ultrasonic testing technique. PVCap (poly(vinylcaprolactam)) and VP/BA (vinyl pyrrolidone/butyl acrylate) were chosen as two typical kinetic inhibitors. Results of the tests demonstrate two kinds of inhibition mechanisms of kinetic hydrate inhibitors, i.e., nucleation inhibition and growth inhibition. PVCap polymer is strong to retard catastrophic growth of hydrate formation, while VP/BA dominantly prevents hydrate nucleation. The synergism of glycol ether compounds on the performance of PVCap was also tested. It was found that glycol ether compounds noticeably prolong the nucleation time, and extend the delay of catastrophic growth significantly. © 2010 Elsevier Ltd.

    Original languageEnglish
    Pages (from-to)278-283
    Number of pages6
    JournalChemical Engineering Science
    Volume66
    Issue number3
    DOIs
    Publication statusPublished - 1 Feb 2011

    Keywords

    • Adsorption
    • Gas hydrates
    • Nucleation
    • Polymers
    • Synergism
    • Ultrasonic test technique

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