Research on the stability of the methane hydrate during the formation-dissociation and the storage-transportation

甲烷水合物形成-解离及储存-运输过程稳定性研究

• 批准号: 14550864
• 负责人: KOBAYASHI Yoshihiro
• 金额: $ 1.09万
• 依托单位: Sojo Univ.
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14550864/
• 关键词: Methane gas hydrate; Hydrate; Formation-Dissociation; Storage; self preservation effect; 安定性; メタンガスハイドレイド

Experimental researches of the methane hydrate behavior and the confirmation of phenomena have been carried out. Those include the following items.(1)Inherent formation of methane hydrate in the pebbles or sands under the simulated conditions of pressure and temperature of sea bottom and the accelerated formations of hydrate were observed.(2)Horizontal contact of the water and the methane gas was given in the pressure vessel under the pressure and a certain level of sub-cooled temperature. Natural formation of hydrate at the interface of the both material was observed.(3)Forced convection and stirring were given to the two materials. After several hours lots of white nuclei made appearance in the water and moved upward then seemed solidified into hydrate there. During the formation the heat production was observed inside the hydrate core by temperature change. The heat absorption is essentially necessary.(4)Two methods of the heating and the decompression were applied for dissociation of the hydrate. Different behaviors occurred. The rapid decompression will lead to the freezing of water.(5)The self preservation effect of the hydrate was reproduced by our small apparatus. After freezing up-to about -10 deg. C and maintaining under the atmosphere pressure, dissociation could not be observed. Burning of gas proved the SPE.(6)The sophisticated system of the formation, SPE, storage and dissociation of the hydrate was thought up based on this research, target was energy and material saving, efficient performance, the stabilized storage and controllable operation.

已经开展了甲烷水合物行为的实验研究和现象的验证。其中包括以下几项：（1）在模拟海底压力和温度条件下，观察到卵石或砂中甲烷水合物的固有形成以及水合物的加速形成。（2）在压力容器内，在压力和一定水平的过冷温度下，水和甲烷气体发生水平接触。观察到两种材料的界面处自然形成水合物。(3)对两种材料进行强制对流和搅拌。几个小时后，大量白色核出现在水中并向上移动，然后在那里凝固成水合物。在形成过程中，通过温度变化观察到水合物核心内部产生的热量。吸热是必不可少的。(4)水合物的解离采用了加热和减压两种方法。发生了不同的行为。快速减压会导致水结冰。(5)我们的小型装置再现了水合物的自我保存效应。冷冻至-10度左右后。 C并保持在大气压下，观察不到解离。气体燃烧证明了SPE的有效性。(6)在此研究的基础上，提出了水合物形成、SPE、储存和解离的复杂系统，目标是节能节材、性能高效、储存稳定、运行可控。

项目成果

古林義弘: "メタンハイドレイトの生成・分解に関する実験的研究"日本機械学会・2003年度年次大会講演論文集. Vol.III. 347-348 (2003)

Yoshihiro Furubayashi：“甲烷水合物的产生和分解的实验研究”日本机械工程师学会2003年年会论文集第347-348卷（2003年）。

Yoshihiro Kobayashi: "Experimental Research on the Formation and Storage of the Methane Gas Hydrate"The Proceedings of the Fifth (2003)ISOPE OCEAN MINING SYMPOSIUM. 185-187 (2003)

小林义博：“甲烷气体水合物形成和储存的实验研究”第五届（2003）ISOPE海洋采矿研讨会论文集。

Yoshihiro Kobayashi: "Experimental Research on The Formation and Dissociation of The Methane Gas Hydrate"The Japan Society of Mechanical Engineers, Mechanical Engineering Congress, 2003 Japan.. 347-348 (2003)

小林义博：“甲烷气体水合物的形成和解离的实验研究”日本机械工程学会，机械工程学会，2003年日本.. 347-348 (2003)

Yoshihiro Kobayashi: "Experimental Research on the Formation and Storage of the Methane Gas Hydrate"The Proceedings of The Fifth (2003) ISOPE OCEAN MINING SYMPOSIUM (Sept.2003). 185-187 (2003)

Yoshihiro Kobayashi：“甲烷气体水合物形成和储存的实验研究”第五届（2003）ISOPE海洋采矿研讨会论文集（2003年9月）。

古林義弘: "メタンハイドレイトの深海・生成シミュレーションと貯蔵技術"西部造船会技術研究会、第4回機能システムシンポジウムテキスト. No.4. 43-63 (2003)

Yoshihiro Furubayashi：“深海甲烷水合物生产模拟和储存技术”西方造船师技术研究组，第四届功能系统研讨会文本第4. 43-63号（2003）。