2330 低温液体 CO_2 の水中への噴出挙動

概要

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The purpose of the present research is to observe the liquid carbon dioxide (CO_2) injection behavior in high-pressurized water that simulating 500m-depth sea. The experimental conditions are chosen to be under the formation region of CO_2 hydrate, greater pressure than 4.45MPa and lower temperature than 10 degree centigrade. It is expected that the CO_2 hydrate be formed between water phase and liquid CO_2 phase under the conditions. As the result, it is observed that the hydrate membrane formed at the interface of liquid CO_2 jet and water. When the temperature of minus degrees centigrade liquid CO_2 is spouted out into water, a nebula substance is observed to grow from the nozzle. It can be judged that this nebula substance is ice based on the interfacial estimated temperature. This result suggests that the hydrate and ice formation is expected during the low temperature liquid CO_2 injection into the shallow sea.
社団法人日本機械学会の論文
2003-08-05