2ブタノールと水,2～3の炭化水素との気液平衡および溶解度について

抄録

Physical properties of some hydrocarbons as separating agents in the dehydration of sec-butanol by azeotropic distillation were studied. Hydrocarbons used in this experiment were iso-octane, n-heptane, methylcyclohexane and two special fractions of gasoline.
Solubility curves of each of the three component systems at 20°C and 40°C were obtained, and the vapor liquid equilibria of the systems-sec-BuOH-water, sec-BuOH-iso-octane, sec-BuOH-n-heptane, and sec-BuOH-methylcyclohexane-were determined. Boiling points of hydrocarbon-water systems may be calculated from the vapor pressure data and the boiling point of each component.
Azeotropic concentrations of the systems-sec-BuOH-water-iso-octane, sec-BuOH-water-n-heptane, secBuOH-water-methylcyclohexane-were determined as listed on page 637, 638.
The result of the investigation suggests that a mixture of hydrocarbons may be used as a separating agent. Two special fractions of gasoline were tested and their batch distillation curves were obtained as given in Fig. 8.