Ethanol-Benzene 공비혼합물의 분리를 위한 압력변환 증류공정의 전산모사

박회경; 김동선; 조정호; Hoey Kyung Park; Dong Sun Kim; JungHo Cho

Korean Chemical Engineering Research, Vol.53, No.4, 450-456, August, 2015

DOI10.9713/kcer.2015.53.4.450 Export Citation

Ethanol-Benzene 공비혼합물의 분리를 위한 압력변환 증류공정의 전산모사

Simulation and Optimization Study on the Pressure-Swing Distillation of Ethanol-Benzene Azeotrope

박회경, 김동선 , 조정호 ^†

공주대학교 화학공학부, 330-717 충남 천안시 부대동 275

Hoey Kyung Park, Dong Sun Kim , and JungHo Cho^†

Department of Chemical Engineering, Kongju National University, 275 Budae-Dong, Cheonan-si, Chungnam 330-717, Korea

E-mail:

초록

본 연구에서는 압력변환 증류공정(Pressure-Swing Distillation, PSD)을 사용하여 에탄올-벤젠 공비혼합물의 분리공정에 대한 전산모사 및 공정 최적화를 수행하였다. 신뢰성 있는 공정 최적화 결과를 도출하기 위해 에탄올-벤젠 이성분계에 대한 기-액 상평형 실험을 수행한 후, 열역학 모델식의 회귀분석을 통해 이성분계 상호작용 매개변수를 도출하였다. 저압-고압 컬럼 배열, 고압-저압 컬럼 배열을 통한 압력변환 증류공정을 적용하여 고순도 에탄올과 고순도 벤젠을 얻기 위한 공정 최적화를 수행하였으며, 재비기의 heat duty량을 비교하였다.

In the present study, modelling and optimization of ethanol-benzene separation process were performed using pressure-swing distillation. Order to obtain a reliable results, vapour-liquid equilibrium (VLE) experiments of ethanol-benzene binary system were performed. The parameters of thermodynamic equation were determined using experimental data and the regression. The pressure-swing distillation process optimization was performed to obtain high purity ethanol and high purity benzene into a low-high pressure columns configuration and a high-low pressure columns configuration. The heat duty values of the reboiler from simulation were compared, and the process was optimized to minimize the heat duty.

Keywords:Ethanol;Benzene;Azeotrope;Liquid-Vapor Equilibrium;Pressure-Swing Distillation

[References]

Nam Z, Jiao QZ, Tan ZC, Sun LX, Thermochim. Acta, 401, 151 (2003)
Messick JR, Ackley WR, Moon GD, “Anhydrous Ethanol Distillation Method and Apparatus,” U.S.Pat. US4,422,903, Dec.(1983).
William LL, Chien LI, “Design and Control of Distillation Systems for Separating Azeotropes,” A John Wiley & Sons, Inc., (2010).
Hilmen EK, “Separation of Azeotropic Mixtures: Tools for Analysis and Studies on Batch Distillation Operation,” Ph. D. Thesis, Norwegian University of Science and Technology, Trondheim, Norway(2000).
“PRO/II TM Keyword Manual,” Invensys Systems, Inc. (2010).
Soave G, Chem. Eng. Sci., 27, 1197 (1972)
Renon H, Prausnitz JM, AIChE J., 14(1), 135 (1968)
McKetta JJ, “Unit Operations Handbook 1,” CRC Press, 298-322(1992).
“PRO/II Application Briefs,” Simulation Sciences Inc. (2005).

[Related Articles]

[1] Nam Z, Jiao QZ, Tan ZC, Sun LX, Thermochim. Acta, 401, 151 (2003)

[2] Messick JR, Ackley WR, Moon GD, “Anhydrous Ethanol Distillation Method and Apparatus,” U.S.Pat. US4,422,903, Dec.(1983).

[3] William LL, Chien LI, “Design and Control of Distillation Systems for Separating Azeotropes,” A John Wiley & Sons, Inc., (2010).

[4] Hilmen EK, “Separation of Azeotropic Mixtures: Tools for Analysis and Studies on Batch Distillation Operation,” Ph. D. Thesis, Norwegian University of Science and Technology, Trondheim, Norway(2000).

[5] “PRO/II TM Keyword Manual,” Invensys Systems, Inc. (2010).

[6] Soave G, Chem. Eng. Sci., 27, 1197 (1972)

[7] Renon H, Prausnitz JM, AIChE J., 14(1), 135 (1968)

[8] McKetta JJ, “Unit Operations Handbook 1,” CRC Press, 298-322(1992).

[9] “PRO/II Application Briefs,” Simulation Sciences Inc. (2005).