摘要
多孔介质中的水合物动力学研究由于对实验技术与设备的要求较高,在国内开展的工作相对较少。主要研究了等容等压、等容等温条件以及不同粒径范围的多孔介质中甲烷水合物生成动力学过程。结果表明,低温高压条件能够为甲烷水合物生成提供更大的驱动力,从而明显促进水合物生成。在粒径为250-355μm的天然海砂中,压力5 MPa时,1℃的反应釜温度可以使甲烷水合物较快生成;在粒径为180-250μm的天然海砂中,温度为2.5℃时,5 MPa的压力即可使水合物较容易生成。但粒径范围125-700μm的多孔介质对水合物生成没有明显的影响。
Based on the high requirements of technique and equipmenf, there is relatively few researches on the kinetics of gas hydrates. In this paper, we mainly study the effects of temperature pressure and pore radius of sediments on the formation kinetics of methane hydrate. It turns out that as the pore radius of sediments is 250-355 μm and pressure is 5 MPa, methane hydrate can he quickly synthesized at 1 ℃; as the pore radius of sediments is 180-250 μm and temperature is 2.5℃, methane hydrate can he quickly synthesized at 5 MPa. We also find out that as the pore radius is between 125μm and 700μm, it has little to do with the reaction.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2007年第1期111-116,共6页
Marine Geology & Quaternary Geology
基金
国家"863"计划项目(2001AA611020102)
中国海域天然气水合物资源调查评价转向项目(G2H200200202)
关键词
甲烷水合物
动力学
模拟实验
温度
压力
多孔介质
methane hydrate
kinetics
simulation experiment
temperature
pressure
porous media
