Evaluation CO2 solubility in biphasic solvent with AMP/Ether/Water for CO2 capture

Takehiro Esaki, Yosuke Ueno, Hiroki Uchiyama, Yosuke Matsukuma, Hiroshi Machida

研究成果: 会議への寄与タイプ学会誌査読


We suggest new CO2 absorption processes with biphasic phase separation type for reducing consumption energy. the CO2-rich solution liquid was separated hydrophilic liquid and hydrophobic liquid. In this work, we studied some kind of amine and ether mixture solvents, and observed phase separation phenomena. From the results of phase separation characteristics, we selected with 2-Amino-2-methyl-1-prophanol (AMP), diethylene diethyl ether (DEGDEE) and water pair. We measured the CO2 solubility at different temperature and CO2 patricidal pressure conditions, and evaluated the effect of component concentration in the solvents on CO2 absorption characteristics and phase separation phenomena. We adjusted the biphasic solvents. AMP, DEGDEE and H2O of biphasic solvent weight-composition ratio are 30, 20 and 50 wt% respectively. The CO2 solubility of absorption at 40 ℃, 0.1atm was obtained 0.647 mol-CO2/mol-AMINE. The CO2 solubility of desorption at 90℃, 1.0 atm was obtained 0.177 mol-CO2/mol-AMINE. The difference of CO2 loading of this solvent was high performance of CO2 capture compared with that of other solvents. These result is attributed to the additive phase assisting in the regeneration of CO2 by extracting the regenerated amine. The results of the present study show reduction of desorption temperature and high CO2 absorption performance.

出版ステータス出版済み - 2021
イベントInternational Conference on Power Engineering 2021, ICOPE 2021 - Virtual, Online
継続期間: 10月 17 202110月 21 2021


会議International Conference on Power Engineering 2021, ICOPE 2021
CityVirtual, Online

!!!All Science Journal Classification (ASJC) codes

  • エネルギー工学および電力技術
  • 燃料技術
  • 電子工学および電気工学


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