Definition of fractional distillation in English:

fractional distillation


  • Separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.

    • ‘However, in broad terms, petroleum can be divided into six fractions obtained from fractional distillation of the crude oil.’
    • ‘Oil refining separates the various fractions of petroleum by a process called fractional distillation and takes place in a large plant called a refinery.’
    • ‘Historically acetone was prepared by the destructive distillation of wood, followed by fractional distillation of the product.’
    • ‘The liquids in a mixture such as this can be separated by fractional distillation.’
    • ‘This mixture (an azeotrope) is produced by fractional distillation and it is known as rectified spirit.’