2016 Fiscal Year Final Research Report
Influence of properties of inorganic porous hollow fiber membranes on CO2 desorption from chemical absorbents in the membrane flash process
| Project/Area Number |
26420762
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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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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Shinshu University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | CO2化学吸収プロセス / 省エネルギー / アルミナ多孔質膜 / CO2放散 / 触媒効果 / 酸性官能基 |
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| Outline of Final Research Achievements |
Carbon capture and storage, CCS is expected to be a promising technology to mitigate the global warming. For its practical use, however, it is necessary to reduce the energy consumption in the solvent regeneration in the chemical absorption method. Then, this study focused on the membrane flash process using alumina porous hollow fiber membranes. This uses pressure control not much heat supply used in the conventional method to release CO2 from the rich solvent.
In this study, influence of physical and chemical properties of the membrane on CO2 desorption performance was experimentally investigated. The results showed that the contact time and area between the rich solvent and the membrane had great influence on the CO2 desorption rate and there was the appropriate membrane structure yielding a higher CO2 desorption rate. Also, it was found out that the introduction of acidic chemical groups like a phosphate group to the membrane surface was an effective way to promote CO2 desorption.
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| Free Research Field |
環境工学、反応工学、移動現象
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