Single Stage Distillation Flashcards
A method used to separate the components of liquid solution, which depends upon the distribution of these various components between a vapor and a gas liquid phases.
Distillation
It is created from the liquid phase by vaporization at the boiling point.
Vapor Phase
It is concerned with solution where all components are appreciably volatile where both components will be in the vapor phase.
Distillation
It is a measure of the differences in volatility between two components, and hence their boiling points. It indicates how easy or difficult a particular separation will be.
Relative Volatility
A liquid with a low boiling point is said to be volatile or having high volatility.
More Volatile Component (MVC)
A high boiling point liquid has a low volatility
Less Volatile Component (LVC)
Separation by distillation is only feasible within the region bounded by the __________ and the ________.
Equilibrium Curve, 45 deg. Diagonal Line
Distillation has two main methods in practice.
1) No liquid is allowed to return to the single-stage still to contact the rising vapors.
2) Returning of a portion of the condensate to the still.
In ________ distillation, which occurs in a single stage, a liquid mixture is partially vaporized. The vapor is allowed to come to equilibrium with the liquid and the vapor and the liquid phases are then separated. This can be done batch-wise or continuously.
Equilibrium or Flash Distillation
It relates the composition of the streams leaving the stage or drum.
Operating Line
In ________ distillation, liquid is first charged to a heated kettle. The liquid charge is boiled slowly and the vapors are withdrawn as rapidly as they form to a condenser, where the condensed vapor is collected. The first portion of vapor condensed will be riches in the more volatile component A. As vaporization proceeds, the vaporized product becomes leaner in A.
Simple Batch or Differential Distillation.
Primary equation used in Differentia Distillation
Rayleigh Equation
