期刊
FLUID PHASE EQUILIBRIA
卷 413, 期 -, 页码 75-79出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fluid.2015.09.008
关键词
Ionic liquid; Gas hydrate; Inhibitor; Phase equilibrium; Flow assurance
资金
- Industrial Strategic Technology Development Program [10045068]
- Ministry of Trade, Industry and Energy (MI, Korea)
- Korea Evaluation Institute of Industrial Technology (KEIT) [10045068] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [31Z20130012935] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The phase equilibrium conditions of CO2 hydrates were examined in the presence of morpholinium and piperidinium ionic liquids (ILs) with a mass fraction of 0.1. The equilibrium conditions were in the ranges of (274.6-281.2) K and (1.80-3.95) MPa. The addition of ILs shifted the hydrate equilibrium conditions to a higher pressure and lower temperature region compared to the hydrate formed from pure water. Piperidinium and morpholinium ILs showed similar inhibition effects in the higher temperature range >= 278.5 K, whereas at lower temperature piperidinium ILs had a slightly better inhibition effect than morpholinium ILs. The anionic species also affected the hydrate inhibition effectiveness. Smaller anions, i.e., Br-, had a slightly better inhibition effect than the bigger ions of UZI. (C) 2015 Elsevier B.V. All rights reserved.
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