CO2ハイドレート膜厚に及ぼす流れ場の影響

概要

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In order to realize of 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, flow velocity on CO2 hydrate film, and elapsed time from hydrate formation is little. The objective of the present study is to investigate the influence of temperature and flow velocity on CO2 hydrate film thickness. CO2 hydrate film thickness is measured under differential temperature and flow velocity conditions. In this study, CO2 hydrate film thickness is measured with laser interference method. And, CO2 hydrate film thickness is estimated based on duality of CO2 saturated solubility under CO2 hydrate formation condition. As the result, the measured CO2 hydrate film thickness decrease with increase in temperature and flow velocity. And, the estimated CO2 hydrate film thickness denotes the same tendency of measured CO2 hydrate film thickness.
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