2023 Fiscal Year Final Research Report
Study on CO2 gas storage properties of TBAB-CO2 double hydrate
| Project/Area Number |
21K03920
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 19020:Thermal engineering-related
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| Research Institution | Aoyama Gakuin University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
森本 崇志 青山学院大学, 理工学部, 助教 (30803259)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | ハイドレート / TBAB / CO2 |
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| Outline of Final Research Achievements |
It is revealed that mixing TBAB to CO2 hydrate is effective to decrease the hydrate formation pressure and it is called TBAB-CO2 double hydrate. In order to use TBAB-CO2 double hydrate as a latent heat storage-media, it is necessary to define the decomposition heat of TBAB-CO2 hydrate. The effects in the different formation condition were not taken into account in previous research. Therefore, the purpose of this study is to evaluate the effects of stirring rate and cooling rate on CO2 uptake and composition of TBAB-CO2 double hydrate by simultaneously measuring changes in three parameters: temperature and pressure before and after formation, and TBAB concentration in aqueous solution during the formation of TBAB-CO2 hydrate and composition. As the results, the stirring rate and cooling rate do not affect of the composition of the double hydate.
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| Free Research Field |
熱工学
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| Academic Significance and Societal Importance of the Research Achievements |
ダブルハイドレートを蓄熱材やガス分離に利用する場合には，ハイドレートの生成速度がシステムの性能を決定づけることになり，大きな生成速度が望ましい．一方，ハイドレートの生成速度が大きくなると，CO2の包蔵量は変化することが予想された．検討の結果，攪拌速度や生成速度は，CO2包蔵性能に大きな影響を及ぼさない可能性が考えられ，ダブルハイドレートの工業的利用の可能性を示せた点については，大きな社会的意義があるものと思われる．
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