Effect of surfactant on the induction time of gas hydrate formation

摘要：

Accelerating hydrate formation is the key of applications of hydrate technique in the fields of prevention of coal and gas outburst and storage and transport of coalbed methane, so it is necessary to do research on the acceleration of surfactant in the process of gas hydrate formation. Using hydrate equipment, gas hydrate formation processes in five groups of surfactants solution systems (T40, 1.0×10－3 mol·L-1; T80, 1.0×10－3 mol·L-1; T40/T80, 1.0×10－3 mol·L-1; SDS, 10.0×10－3 mol·L-1; SDBS, 2.0×10－3 mol·L-1) were studied. The generalized induction time was measured by means of the direct observation method and the experimental data were calculated and analyzed based on the calculation model of induction time of gas hydrate. The results showed that the addition of surfactants decreases the surface tension of solution, which facilitates the gas dissolution, quickens the crystal nucleus formation, shortens the induction time, and the differences of effects of various surfactants on the induction time of gas hydrate formation are obvious.

关键词： gas hydrate surfactant induction time coal and gas outburst coalbed methane storage and transport

作者: WU Qiang ZHANG Baoyong

作者单位: Department of Safety Engineering & Technology, Heilongjiang Institute of Science & Technology, Harbin 150027, China

会议类型: 国际会议

会议名称: The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)

会议地点: 河南焦作

会议语种:英文

页码: 1291-1297

在线出版日期: 2007-04-17（万方平台首次上网日期，不代表论文的发表时间）