Na₂CO₃, K₂CO₃ 및 Li₂CO₃ 첨착활성탄을 이용한 CO₂ 제거 -고정층 반응기에서의 CO₂ 흡착특성-
Removal CO₂ using Na₂CO₃, K₂CO₃ and Li₂CO₃ Impregnated Activated Carbon-Characteristics of CO₂ Adsorption in Fixed Bed Reactor-
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초록
The purpose of this study was to perform basic study on the characteristics of CO₂ Adsorption according to Na₂CO₃, K₂CO₃, Li₂CO₃-impregnated activated carbon in Fixed Bed Reactor. From the results of this study, following conclusions were made: Na₂CO₃, K₂CO₃, Li₂CO₃-impregnated activated carbon which had a longer breakthrough time and more enhanced adsorption capacity than the activated carbon was tested with isothermal adsorption and tested for CO₂ adsorption amount varied with temperature, CO₂ inlet concentration, gas flow rate, aspect ratio, etc. Based on the results, when Langmuir, Freundlich and Dubinin-Polanyi adsorption isotherms were used for linear regression of isothermal adsorption data, Langmuir adsorption isotherm was the most suitable. And, the optimum condition for Na₂CO₃ and K₂CO₃ impregnated activated carbon make-up was 1N and Li₂CO₃ was 0.1N. It could be concluded that adsorption capacity was decreased with adsorption temperature and increased gas concentration. When the aspect ratio (L/D) was varied 0.5, 1.0 and 2.0, the significant drop of adsorption amount was observed below 1.0 and breakthrough time was shortened with gas flow rate.
Abstract
The purpose of this study was to perform basic study on the characteristics of CO₂ Adsorption according to Na₂CO₃, K₂CO₃, Li₂CO₃-impregnated activated carbon in Fixed Bed Reactor. From the results of this study, following conclusions were made: Na₂CO₃, K₂CO₃, Li₂CO₃-impregnated activated carbon which had a longer breakthrough time and more enhanced adsorption capacity than the activated carbon was tested with isothermal adsorption and tested for CO₂ adsorption amount varied with temperature, CO₂ inlet concentration, gas flow rate, aspect ratio, etc. Based on the results, when Langmuir, Freundlich and Dubinin-Polanyi adsorption isotherms were used for linear regression of isothermal adsorption data, Langmuir adsorption isotherm was the most suitable. And, the optimum condition for Na₂CO₃ and K₂CO₃ impregnated activated carbon make-up was 1N and Li₂CO₃ was 0.1N. It could be concluded that adsorption capacity was decreased with adsorption temperature and increased gas concentration. When the aspect ratio (L/D) was varied 0.5, 1.0 and 2.0, the significant drop of adsorption amount was observed below 1.0 and breakthrough time was shortened with gas flow rate.
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