Promotion Effect of Anionic, Cationic and Non-ionic Surfactants on Methane Hydrate

The effects of anionic surfactant sodium dodecyl sulfate (SDS), cationic surfactant cetyl trimethyl ammonium bromide (CTAB) and non-ionic surfactant ethoxylated nonylphenol (ENP) on the formation rate and storage capacity of methane hydrate have been investigated. Each surfactant was tested with three concentrations 300, 500 and 1000 ppm and it has been found that SDS, when prepared with these three concentrations speeds up the hydrate formation rate effectively. CTAB and ENP have promotion effect on hydrate formation rate at 1000 ppm but decrease it at 300 and 500 ppm. Experimental results on hydrate gas content revealed that maximum storage capacity of 165 V/V is obtained with 1000 ppm of CTAB in water.

کلیدواژه ها:

Gas hydrates ، Promoters ، Surfactants ، Formation rate ، Storage capacity