Direct Observation of the Effect of Sodium Dodecyl Sulfate (SDS) on the Gas Hydrate Formation Process in a Static Mixer

作者：Tajima Hideo; Kiyono Fumio; Yamasaki Akihiro^*

来源：Energy & Fuels, 2010, 24(1): 432-438.

DOI：10.1021/ef900863y

Direct observation and the measurement of the formation rate of the gas hydrate of HCFC-22 in it Kenics-type static mixer were conducted in it laboratory-scale experimental apparatus. This study focused oil the effect of sodium dodecyl sulfate (SDS) addition oil the hydrate formation process under the SDS concentration below the critical micelle concentration (cmc). The hydrate film was formed ill the surface of bubbles in any case, but the appearance of the hydrate film and its behavior were significantly changed with increasing the SDS concentration. Without SDS. smooth and homogeneous hydrate film was formed at the surface of HCHC-22 bubbles. The HCHC-22 gas wits trapped in the shell of the rigid hydrate film, and the bubbles agglomerated each other to form it grape-like structure. From the addition of SDS, the hydrate Film Formed With it rougher and heterogeneous surface; file hydrate film Seems to have a loose structure and easily Collapsed from the buoyant motion of the HCFC-22 gas trapped in file shell. The enhancement of the gas hydrate formation by the SDS addition can be attributed to the mass transfer through the loose hydrate Film and the surface renewal by the film collapse.

• 出版日期2010-1