摘要
研究了在阴离子表面活性剂十二烷基硫酸钠（SDS）体系中甲烷水合物在冰点以下的常压分解规律。研究结果表明，静态下生成的甲烷水合物较动态下的分解速度低；在262．15～268．15K在之闻，甲烷水合物的分解速度随着温度的降低而升高；在此范围以外，甲烷水合物的分解速度随着温度的降低而降低；在262．15-272．15K之间存在最低分解速度，其中在268．15K，甲烷水合物的分解速度最低。利用外推法计算268．15K时甲烷水合物完全分解需要25d，说明水合物的自我保存性质对气体水合物储运技术具有重要意义。
The decomposition law of methane hydrate under the atmospheric pressure and freezen point is studied in the system of SDS. The result shows the static decomposition velocity is slower than that of dynamic state. The decomposition velocity slows down as the temperarture rises in the range from 262.15K to 268.15K. Beyond this range, the decomposition velocity slows down as the temperature decreases. The decomposition velocity is the slowest at 268.15K in the range from 262.15K to 272.15K. calculation is made by extrapolation method, it takes 25 days for methane hydrate to decompose completely at 268.15K, which indicates that the self-preservation property of hydrate makes important sense for the hydrate storing and transporting technology.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2006年第3期141-142,共2页
Journal of Oil and Gas Technology
基金
国家自然科学基金资助项目(20176028
90210020)
关键词
甲烷
水合物
热稳定性
储气量
分解速度
静态
动态
methane
hydrate
thermal stability
gas storing capacity
decomposition
velocity
static state
dynamic state
