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2011 | OriginalPaper | Chapter

5. Distillation, Rectification, and Absorption

Authors : Prof. Dr.-Ing. Alfons Mersmann, Prof. Dr.-Ing. Matthias Kind, Prof. Dr.-Ing. Johann Stichlmair

Published in: Thermal Separation Technology

Publisher: Springer Berlin Heidelberg

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Abstract

The unit operations distillation, rectification, and absorption are by far the most important technologies for fractionating fluid mixtures. This great technical importance is founded on the fact that only fluid phases, which can be handled very easily, are involved. A further advantage is a high-density difference between the coexisting phases. High-density differences enable high velocities in the equipment and make the separation of the phases easier.

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previous chapter Balances, Kinetics of Heat and Mass Transfer
next chapter Extraction
Footnotes
1
One should be aware that the terms “dew point” and “boiling point” lose their meaning in wide boiling systems encountered in absorption and desorption. For instance, water saturated with air at 20°C contains so little dissolved air that no bubbling can be effected by a small increase of temperature. Nevertheless, from a thermodynamic point of view, the water phase is at its boiling point. random packings. Mass transfer efficiency is as high as 2–4 equilibrium stages per meter. The pressure drop per equilibrium stage is typically as low as 0.5 mbar.
 
Metadata
Title
Distillation, Rectification, and Absorption
Authors
Prof. Dr.-Ing. Alfons Mersmann
Prof. Dr.-Ing. Matthias Kind
Prof. Dr.-Ing. Johann Stichlmair
Copyright Year
2011
Publisher
Springer Berlin Heidelberg
Book
Thermal Separation Technology

Print ISBN: 978-3-642-12524-9

Electronic ISBN: 978-3-642-12525-6

Copyright Year: 2011

DOI
https://doi.org/10.1007/978-3-642-12525-6_5

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