Comparison of methane hydrate formation in stirred reactor and porous media in the presence of SDS

摘要

In this work, methane hydrate formation was compared between a stirred reactor and a fixed bed of porous media (silica sand) in the presence of sodium dodecyl sulfate (SDS). The experiments were carried out in batch operation and at 7.0 MPa and 274.15 K. The aqueous concentration of SDS used was in the range of (300-1500 ppm). The results indicated that the SDS concentration of 500 ppm was found to be an optimum concentration for methane hydrate formation, and methane hydrate formation was significantly promoted in the fixed bed of silica sand with 500 ppm SDS as compared to those using SDS solutions in the stirred reactor. The water conversion to hydrate and the gas storage capacity achieved 78.1% and 139.8 V/V, respectively.