蒸汽蒸餾

蒸汽蒸餾是一種特殊類型的蒸餾（分離過程），用於對溫度敏感的材料（例如天然芳香化合物）進行蒸餾。
Many organic compounds tend to decompose at high sustained temperatures.許多有機化合物傾向於在較高的持續溫度下分解。 Separation by normal distillation would then not be an option, so water or steam is introduced into the distillation apparatus.因此，不能通過常規蒸餾進行分離，因此將水或蒸汽引入蒸餾設備中。 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.通過添加水或蒸汽，降低了化合物的沸點，使它們在較低的溫度下蒸發，最好在低於材料變質的溫度以下蒸發。 If the substances to be distilled are very sensitive to heat, steam distillation can also be combined with vacuum distillation.如果要蒸餾的物質對熱非常敏感，則蒸汽蒸餾也可以與真空蒸餾結合使用。 After distillation the vapors are condensed as usual, usually yielding a two-phase system of water and the organic compounds, allowing for simple separation.蒸餾後，蒸氣照常冷凝，通常產生水和有機化合物的兩相繫統，從而可以輕鬆分離。