Design of Batch Distillation Columns Using Short-Cut Method at Constant Reflux

A short-cut method for batch distillation columns working at constant reflux was applied to solve a problem of four components that needed to be separated and purified to a mole fraction of 0.97 or better. Distillation columns with 10, 20, 30, 40, and 50 theoretical stages were used; reflux ratio wa...

Full description

Saved in:
Bibliographic Details
Published in:Journal of engineering (Cairo, Egypt) Egypt), 2013-01, Vol.2013 (2013), p.1-14
Main Authors: Narvaez-Garcia, Asteria, Zavala-Loria, Jose del Carmen, Vilchis-Bravo, Luis Enrique, Rocha-Uribe, Jose Antonio
Format: Article
Language:English
Subjects:
Batch processes
Batch processing
Equilibrium
Methods
Refineries
Volatility
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A short-cut method for batch distillation columns working at constant reflux was applied to solve a problem of four components that needed to be separated and purified to a mole fraction of 0.97 or better. Distillation columns with 10, 20, 30, 40, and 50 theoretical stages were used; reflux ratio was varied between 2 and 20. Three quality indexes were used and compared: Luyben’s capacity factor, total annual cost, and annual profit. The best combinations of theoretical stages and reflux ratio were obtained for each method. It was found that the best combinations always required reflux ratios close to the minimum. Overall, annual profit was the best quality index, while the best combination was a distillation column with 30 stages, and reflux ratio’s of 2.0 for separation of benzene (i), 5.0 for the separation of toluene (ii), and 20 for the separation of ethylbenzene (iii) and purification of o-xylene (iv).
ISSN:2314-4904
2314-4912
2314-4912
DOI:10.1155/2013/685969