(1) 低圧気液平衡

分離精製プロセスには，蒸留・抽出・晶析・膜分離などがありますが，なかでも蒸留は最も重要なプロセスです． 蒸留プロセスの設計・開発において，信頼できる気液平衡(VLE)データは必須の物性値です．

本研究室では，気液平衡蒸留器・エブリオメータ・自動気液平衡測定装置を用いて，低圧下における気液平衡の測定を継続的に行っています． 

ホールドアップ補償型エブリオメータ概略図
1, 2, ebulliometer; 3, thermometer; 4, volt slider; 5, pressure controller; 6, data logger; 7, personal computer; A, vapor hold-up collector; C, condenser; F, boiling flask; H, heater; K₁, K₂, trident tap; P, cottrell pump; S, stirrer; T, thermometer well.

自動気液平衡測定装置概略図
1-3, temperature indicator controllers for heating; 4, data logger; 5, thermometer for sample mixture; 6, thermometer for water; 7-12, thermometers for control; 13, condenser; 14, flask for sample mixture; 15, flask for water; 16, heater; 17, stirrer; 18, solenoid valve; 19, buffer tank; 20, vacuum pump; 21, water bath; 22, personal computer; 23, pressure indicator.

H. Matsuda, K. Inaba, K. Nishihara, H. Sumida, K. Kurihara, K. Tochigi, and K. Ochi

Separation Effects of Renewable Solvent Ethyl Lactate on the Vapor-Liquid Equilibria of the Methanol + Dimethyl Carbonate Azeotropic System, J. Chem. Eng. Data, in press

DOI: 10.1021/acs.jced.7b00185

H. Matsuda, K. Inaba, H. Sumida, K. Kurihara, K. Tochigi, and K. Ochi

Vapor-Liquid Equilibria of Binary and Ternary Mixtures Containing Ethyl Lactate and Effect of Ethyl Lactate as Entrainer, Fluid Phase Equilibria, 420, 50-57 (2016)

DOI: 10.1016/j.fluid.2015.12.029

H. Taguchi, J. Nakakubo, H. Matsuda, K. Kurihara, and K. Tochigi

Determination of Vapor-Liquid Equilibria at Elevated Pressures Using Ebulliometer, J. Chem. Eng. Japan, 49, 317-323 (2015)

DOI: 10.1252/jcej.14we263

横山克己, 松田弘幸, 栗原清文, 栃木勝己

自動気液平衡測定装置によるNRTLパラメータ決定と留出曲線マップによるバッチ蒸留の検討, 化学工学論文集, 39, 104-111 (2013)

DOI: 10.1252/kakoronbunshu.39.104

N. Kamihama, H. Matsuda, K. Kurihara, K. Tochigi, K. Tochigi, S. Oba

Isobaric Vapor-Liquid Equilibria for Ethanol + Water + Ethylene Glycol and its Constituent Three Binary Systems, J. Chem. Eng. Data, 57, 339-344 (2012)

DOI: 10.1021/je2008704

H. Matsuda, H. Yamada, R. Takahashi, A. Koda, K. Kurihara, K. Tochigi, K. Ochi

Ebulliometric Determination and Prediction of Vapor-Liquid Equilibria for Binary Mixture Ethanol + Ethyl Hexanoate, J. Chem. Eng. Data, 56, 5045-5051 (2011)

DOI: 10.1021/je200868y

H. Matsuda, M. Fukano, S. Kikkawa, D. Constantinescu, K. Kurihara, K. Tochigi, K. Ochi, J. Gmehling

Ebulliometric Determination and Prediction of Vapor-Liquid Equilibria for Binary and Ternary Mixtures Containing Alcohols (C₁ - C₄) and Dimethyl Carbonate, J. Chem. Thermodynamics, 44, 84-96 (2012)
DOI: 10.1016/j.jct.2011.08.006

H. Matsuda, H. Takahara, S. Fujino, D. Constantinescu, K. Kurihara, K. Tochigi, K. Ochi, J. Gmehling
Selection of Entrainers for the Separation of the Binary Azeotropic System Methanol + Dimethyl Carbonate by Extractive Distillation, Fluid Phase Equilibria, 310, 166-181 (2011)
DOI: 10.1016/j.fluid.2011.08.007

H. Matsuda, N. Kamihama, K. Kurihara, K. Tochigi, K. Yokoyama
Measurement of Isobaric Vapor-Liquid Equilibria for Binary Systems Containing Tetrahydrofuran Using an Automatic Apparatus, J. Chem. Eng. Japan, 44, 131-139 (2011)
DOI: 10.1252/jcej.10we162

H. Matsuda, Yokoyama, H. Kyuzaki, K. Kurihara, K. Tochigi
Isobaric Vapor-Liquid Equilibria for Ethylbenzene + p-Xylene System and Separation by Distillation, J. Chem. Eng. Japan, 43, 247-252 (2010)
DOI: 10.1252/jcej.09we167

K. Tochigi, H. Takahara, Y. Shiga, Y. Kawase
Isobaric Vapor-Liquid Equilibria for Water + Propylene glycol monomethyl ether (PGME), Water + Propyleneglycol monomethyl ether acetate (PGMEA), and PGME + PGMEA at Reduced Pressures, Fluid Phase Equilibria, 260, 65-69 (2007)
DOI: 10.1016/j.fluid.2007.06.006