Articles & Issues
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
비활성기체층에서의 증발과 확산에 의한 에탄올 탈수
Ethanol Dehydration by Evaporation and Diffusion in an Inert Gas Layer
HWAHAK KONGHAK, October 1994, 32(5), 734-741(8), NONE
Download PDF
Abstract
두 개의 동심관의 젖은 벽탑으로 구성된 확산증류장치를 이용하여 공비혼합물의 에탄올 탈수를 수행하였다. 끓는점 이하의 온도에서 증발된 에탄올과 물의 혼합물은 비활성기체로 채워진 공간을 확산하면서 분리가 이루어진다. 증발부와 응축부의 온도차가 커짐에 따라 총 플럭스는 증가하였으나 선택도는 감소하였다. 관간격은 선택도에는 큰 영향이 없지만 총 플럭스의 경우 관각격이 커짐에 따라 감소했다. 비활성기체는 증발된 기체의 확산도에 영향을 미치며 헬륨을 사용할 경우 공기를 사용하는 경우보다 총 플럭스는 컸지만 선택도는 낮았다.
Ethanol dehydration of azeotropic mixture was performed by using diffusion distillation apparatus consisting of a wetted-wall column with two concentric tubes. Ethanol-water mixtures evaporated below the boiling point was separated during the diffusion through the gap filled with an inert gas. As the temperature difference between evaporation part and condensation part was increased, the total flux increased but the selectivity decreased. The effect of the annular width on the selectivity was not significant but the total flux was decreased with decreases in the annular width. Inert gas has an effect on the diffusivity of evaporated gas components. The total flux in case of helium as inert gas was larger than that in case of air but the selectivity in case of using helium was lower.
References
Fleming HL, Chem. Eng. Prog., July, 46 (1992)
Fullarton D, Schlunder EU, Chem. Eng. Fundam., 2, 53 (1983)
Fullarton D, Schlunder EU, Chem. Eng. Process., 20, 255 (1986)
McDowell JK, Davis JF, Ind. Eng. Chem. Res., 27, 2139 (1988)
Harteck P, "Summary Report on Research on Isotope Separation by a Distillation-Diffusion Process," Rep. SO-3262 USAEC (1953)
Williamson LW, "The Separation of Isotopes by Diffusion-Distillation," Topical Rep., SO-3253 USAEC (1953)
Fernandez JL, Chargoy N, Sol. Energy, 44, 215 (1990)
Park DM, Song KM, Hong WH, Yang SM, Yamada I, HWAHAK KONGHAK, 31(2), 204 (1993)
Cichelli MT, Weatherford WD, Chem. Eng. Prog., 47, 63 (1951)
Cichelli MT, Weatherford WD, Chem. Eng. Prog., 47, 123 (1951)
Krishna R, Panchal CB, Chem. Eng. Sci., 32, 741 (1977)
Jansen AE, Versteeg WF, vanEngelenburg E, J. Membr. Sci., 68, 229 (1992)
Taylor R, Webb DR, Comput. Chem. Eng., 5, 61 (1981)
Tanihara N, Nakamura A, J. Chem. Eng. Jpn., 25, 388 (1992)
Fullarton D, Schlunder EU, Chem. Eng. Fundam., 2, 53 (1983)
Fullarton D, Schlunder EU, Chem. Eng. Process., 20, 255 (1986)
McDowell JK, Davis JF, Ind. Eng. Chem. Res., 27, 2139 (1988)
Harteck P, "Summary Report on Research on Isotope Separation by a Distillation-Diffusion Process," Rep. SO-3262 USAEC (1953)
Williamson LW, "The Separation of Isotopes by Diffusion-Distillation," Topical Rep., SO-3253 USAEC (1953)
Fernandez JL, Chargoy N, Sol. Energy, 44, 215 (1990)
Park DM, Song KM, Hong WH, Yang SM, Yamada I, HWAHAK KONGHAK, 31(2), 204 (1993)
Cichelli MT, Weatherford WD, Chem. Eng. Prog., 47, 63 (1951)
Cichelli MT, Weatherford WD, Chem. Eng. Prog., 47, 123 (1951)
Krishna R, Panchal CB, Chem. Eng. Sci., 32, 741 (1977)
Jansen AE, Versteeg WF, vanEngelenburg E, J. Membr. Sci., 68, 229 (1992)
Taylor R, Webb DR, Comput. Chem. Eng., 5, 61 (1981)
Tanihara N, Nakamura A, J. Chem. Eng. Jpn., 25, 388 (1992)
