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이원세공 고분자수지 충전층에서 모멘트방법에 의한 물질전달 파라메타의 추산
Estimation of Mass Transfer Parameters in a Fixed Bed of Bi-dispersed Polymer Resin by Moment Method
HWAHAK KONGHAK, October 1984, 22(5), 279-287(9), NONE
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Abstract
이원세공고체 충전층에서 기체의 물질전달파라메타를 추산하기 위한 모멘트식을 유도하였다. 이 모델은 마크로 세공 표면의 표면확산과정을 포함한다. 이 모델로써, 이원세공 고분자수지인 Amberlite XAD-2 충전층에서 CO2의 물질전달파라메타를 만족스럽게 추산할 수 있었다.
소량흡착기체인 Ar의 모멘트 해석으로 얻은 마크로세공의 굴곡도는 2.40이었다. 흡착열은 -4.2 kcal/mol이었다. 마이크로세공확산계수, Di/r2o 은 30 ℃에서 0.22 sec-2, 활성화에너지는 7.3 kcal/mol이었다. 그리고 마크로세공표면확산계수는 30 ℃에서 6.0 × 10-4 cm2/sec, 활성화에너지는 2.7 kcal/mol이었다.
소량흡착기체인 Ar의 모멘트 해석으로 얻은 마크로세공의 굴곡도는 2.40이었다. 흡착열은 -4.2 kcal/mol이었다. 마이크로세공확산계수, Di/r2o 은 30 ℃에서 0.22 sec-2, 활성화에너지는 7.3 kcal/mol이었다. 그리고 마크로세공표면확산계수는 30 ℃에서 6.0 × 10-4 cm2/sec, 활성화에너지는 2.7 kcal/mol이었다.
In order to estimate mass transfer parameters of a gas in a fixed bed of solid with bi-dispersed pore structure, we derived new moment equations. The model contains the surface diffusion process on the surface of macropore. With the model mass transfer parameters of CO2 in the fixed bed of bi-dispersed polymer resin, XAD-2, was estimated satisfactory.
Macropore tortuosity factor was 2.40, which was obtained by moment analysis of nearly nonadsoring gas, Ar.
Heat of adsorption was -4.2 kcal/mol. Micropore diffusivity, Di/r2o, was 0.22 sec-1 at 30 ℃ and the activation energy was 7.3 kcal/mol. And macropore surface diffusivity was 6.0 × 10-4 cm2/sec at 30 ℃ and the activation energy was 2.7 kcal/mol.
Macropore tortuosity factor was 2.40, which was obtained by moment analysis of nearly nonadsoring gas, Ar.
Heat of adsorption was -4.2 kcal/mol. Micropore diffusivity, Di/r2o, was 0.22 sec-1 at 30 ℃ and the activation energy was 7.3 kcal/mol. And macropore surface diffusivity was 6.0 × 10-4 cm2/sec at 30 ℃ and the activation energy was 2.7 kcal/mol.
