蒸汽蒸馏

蒸汽蒸馏是一种特殊类型的蒸馏（分离过程），用于对温度敏感的材料（例如天然芳香化合物）进行蒸馏。
Many organic compounds tend to decompose at high sustained temperatures.许多有机化合物倾向于在较高的持续温度下分解。 Separation by normal distillation would then not be an option, so water or steam is introduced into the distillation apparatus.那么通过常规蒸馏分离将不是一种选择，因此将水或蒸汽引入蒸馏设备中。 By adding water or steam, the boiling points of the compounds are depressed, allowing them to evaporate at lower temperatures, preferably below the temperatures at which the deterioration of the material becomes appreciable.通过添加水或蒸汽，降低了化合物的沸点，使它们在较低的温度下蒸发，最好在低于材料变质的温度以下蒸发。 If the substances to be distilled are very sensitive to heat, steam distillation can also be combined with vacuum distillation.如果要蒸馏的物质对热非常敏感，则蒸汽蒸馏也可以与真空蒸馏结合使用。 After distillation the vapors are condensed as usual, usually yielding a two-phase system of water and the organic compounds, allowing for simple separation.蒸馏后，蒸气照常冷凝，通常产生水和有机化合物的两相系统，从而可以轻松分离。