期刊
CHEMICAL ENGINEERING SCIENCE
卷 82, 期 -, 页码 1-13出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2012.07.025
关键词
Gas Hydrates; Carbon dioxide; Phase equilibria; Kinetics; Separations; Additives
资金
- CCL (Communaute des Communes de Lacq)
- CG64 (Conseil General des Pyrenees Atlantiques)
- ANR (Agence Nationale de la Recherche) through SECOHYA project
- Total E&P (Gas Solutions'' RD Project)
- Fundayacucho from Venezuela
Clathrate hydrates have potential applications in various domains and particularly for CO2 capture where the search for additives able to speed up hydrate formation is of scientific, technological and economical interest. This study investigates the potentialities of two additives used in combination for enhancing CO2 enclathration rates: a surfactant (sodium dodecyl sulphate; SDS) and an organic compound (tetrahydrofuran; THF). Experiments performed in batch and in semi-continuous reactor configuration, reveal that this combination of additives efficiently promotes hydrate formation, allowing a full water-to-hydrate conversion despite the quiescent-forming conditions used. The possible action mechanisms of this combination of additives are analyzed and discussed on the basis of experimental data of hydrate phase equilibria (with and without additives), visual observations, and kinetics experiments. (c) 2012 Elsevier Ltd. All rights reserved.
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