期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 46, 期 -, 页码 57-61出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2011.10.004
关键词
Gas hydrate; Semi-clathrate; TBAB; Carbon dioxide; Nitrogen; Experimental data; Separation
资金
- Mines ParisTech
- Fundayacucho of Venezuela
- Agence Nationale de la Recherche (ANR)
- Orientation Strategique des Ecoles des Mines (OSEM)
The application of semi-clathrate hydrate formation technology for gas separation purposes has gained much attention in recent years. Consequently, there is a demand for experimental data for relevant semi-clathrate hydrate phase equilibria. In this work, semi-clathrate hydrate dissociation conditions for the system comprising mixtures of {CO2 (0.151/0.399 mole fraction) + N-2 (0.849/0.601 mole fraction) + 0.05, 0.15, and 0.30 mass fraction tetra-n-butylammonium bromide (TBAB)} aqueous solutions have been measured and are reported. An experimental apparatus which was designed and built in-house was used for the measurements using the isochoric pressure-search method. The range of conditions for the measurements was from 277.1 K to 293.2 K for temperature and pressures up to 16.21 MPa. The phase equilibrium data measured demonstrate the high hydrate promotion effects of TBAB aqueous solutions. (C) 2011 Elsevier Ltd. All rights reserved.
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