HIGH-PRESSURE VAPOR-LIQUID AND VAPOR-LIQUID-LIQUID EQUILIBRIA FOR SYSTEMS CONTAINING SUPERCRITICAL CARBON-DIOXIDE, WATER AND FURFURAL

被引:24
|
作者
SAKO, T [1 ]
SUGETA, T [1 ]
NAKAZAWA, N [1 ]
OTAKE, K [1 ]
SATO, M [1 ]
ISHIHARA, K [1 ]
KATO, M [1 ]
机构
[1] NIHON UNIV,FAC ENGN,DEPT IND CHEM,KORIYAMA,FUKUSHIMA 963,JAPAN
关键词
EXPERIMENTS; DATA; VLE HIGH PRESSURE; VLLE HIGH PRESSURE; SUPERCRITICAL CARBON DIOXIDE; FURFURAL; WATER;
D O I
10.1016/0378-3812(95)02706-K
中图分类号
O414.1 [热力学];
学科分类号
摘要
We measured vapor-liquid equilibrium for a binary system CO2-furfural at temperatures of 303 and 323 K and vapor-liquid-liquid equilibrium for a ternary system CO2-water-furfural at temperatures of 303, 323 and 343 K and pressure of 5 MPa to obtain fundamental data for concentration of furfural by using three phase separation technique. Furthermore the experimental data were compared with results calculated by the Peng-Robinson equation of state combined with an asymmetric mixing rule. Results indicated that (1) the furfural-rich liquid phase contained more than 90wt% furfural on CO2-free basis and its concentration increased with decrease in temperature, and (2) the Peng-Robinson equation correlated the binary vapor-liquid equilibrium satisfactorily and estimated the ternary vapor-liquid-liquid equilibrium fairly well.
引用
收藏
页码:293 / 303
页数:11
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