Français
3. Specific distillation assumptions
We assume that distillation operations are adiabatic, except at the ends of the column. In addition to being consistent with reality, this assumption allows us to use simple barycentric relationships on the enthalpy diagram.
Calculations are based on the assumption that the device operates at constant pressure. Obviously, pressures vary in a device due to pressure losses associated with flow; these pressure losses are only significant for operations conducted at pressures well below atmospheric pressure.
Unless otherwise indicated, all calculations are made using mole fractions. Reasoning with mass fractions is either the same, or less general.
For further details, readers are invited to consult the general reference works on...
The Ultimate Scientific and Technical Reference
This article is included in
Unit operations. Chemical reaction engineering
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Specific distillation assumptions
Single distillation
References
The Ultimate Scientific and Technical Reference
