Journal
CHEMICAL ENGINEERING SCIENCE
Volume 106, Issue -, Pages 53-59Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2013.11.032
Keywords
Surfactant; Dry solution; Methane hydrate; Formation kinetics
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Funding
- National Natural Science Foundation of China [51176051, 51106054]
- Fundamental Research Funds for the Central University [2013ZM0036, 2013ZZ0032]
- PetroChina Innovation Foundation [2012D-5006-0210, 2013D-5006-0107]
- Key Laboratory of Fuel Cell Technology of Guangdong Province
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Surfactant dry solution (DS) was prepared by mixing sodium dodecyl sulfate (SDS) solution, hydrophobic silica nanoparticles and air in a high speed blender. Flour-like SDS-DS combines the advantages of dispersed dry water and active SDS solution. Methane storage in clathrate hydrates using SDS-DS was investigated in a stainless steel vessel without stirring under the condition of 5.0 MPa and 273.2 K. The results demonstrated that highly dispersed SDS-DS could significantly enhance formation kinetics and storage capacity of methane hydrate. SDS-DS exhibited about the same methane storage capacity (172.96 m(3) m(-3)) as dry water, but faster storage rates than dry water. Compared to SDS solution, SDS-DS had similar storage rates (7.44 m(3) m(-3) min(-1)) and higher methane storage capacity under the relative low pressure. However, the aggregation of partial SDS-DS powders destroyed its original dispersive property after hydrate dissociation. (C) 2013 Elsevier Ltd. All rights reserved.
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