Rapid and high capacity methane storage in clathrate hydrates using surfactant dry solution

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• 作者：Shuanshi Fan ; Liang Yang ; Yanhong Wang ; Xuemei Lang ; Yonggang Wen ; Xia Lou
• 关键词：Surfactant ; Dry solution ; Methane hydrate ; Formation kinetics
• 刊名：Chemical Engineering Science
• 出版年：17 March, 2014
• 年：2014
• 卷：106
• 期：Complete
• 页码：53-59
• 全文大小：2772 K

文摘

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 m³ m^鈭?) as dry water, but faster storage rates than dry water. Compared to SDS solution, SDS-DS had similar storage rates (7.44 m³ m^鈭? min^鈭?) 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.