HIGH-PRESSURE TERNARY LIQUID-LIQUID EQUILIBRIA FOR THE SYSTEMS OF WATER, ALCOHOL (1-PROPANOL, 1-BUTANOL AND 1-PENTANOL) AND 1, 1-DIFLUOROETHANE AT 323.2 K

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

TAKASHI NAKAYAMA²  HIROSHI SAGARA²  KUNIO ARAI¹  SHOZABURO SAITO¹ 

[1] Department of Chemical Engineering, Tohoku University;Research & Development Div., JGC Corporation

关键词: Liquid-Liquid Equilibrium;    1;    1-Difluoroethane;    1-Propanol;    1-Butanol;    1-Pentanol;    Water;    Ethanol;    Fusel Oil;    Distribution Coefficient;   

DOI  :  10.1252/jcej.21.129

来源: Maruzen Company Ltd

【 摘 要 】

References(15)Cited-By(6)For the separation of fusel oil from low-concentration fermentation broths, ternary liquid-liquid equilibria at 323.2 K were measured for the systems of water and 1, 1-difluoroethane with alcohols (l-propanol, 1-butanol and 1-pentanol). The liquefied gas 1, 1-difluoroethane can achieve much higher distribution coefficients of l-propanol, 1-butanol and 1-pentanol than ethanol. Therefore, 1-propanol, 1-butanol and 1-pentanol will be selectively removed from low-concentration ethanol aqueous solutions with liquefied 1, 1-difluoroethane at low solvent ratios. The liquid-liquid equilibrium data were correlated by the UNIQUAC and NRTL equations. The UNIQUAC equation gave better correlation of the experimental data than did the NRTL equation. However, the two-phase regions estimated by the UNIQUAC equation were larger than the experimental results for the systems of water + 1-propanol + 1, 1-difluoroethane and water + 1-pentanol + 1, 1-difluoroethane.

【 授权许可】

Unknown