Abstract
In order to realize CO2 ocean sequestration, it is important to reveal the knowledge of CO2 hydrate film thickness which forms on the interface between CO2 and water. However, knowledge of CO2 hydrate film thickness under various parameter conditions such as temperature, surrounding fluid velocity on the film, and elapsed time from hydrate formation is little. The objective of the present study is to investigate the influence of elapsed time from CO2 hydrate formation. CO2 hydrate film thickness is measured under differential fluid velocity conditions by laser interference method in time series. And CO2 hydrate film thickness is estimated based on hydrate film formation and decomposition model. As the result, the measured CO2 hydrate film thickness increase under no fluid velocity condition in time series and CO2 hydrate film thickness is maintained constant under fluid velocity condition in time series. The estimated CO2 hydrate film thickness show the same tendency of measured CO2 hydrate film thickness.
