Izvorni znanstveni članak
An Effective Method for Establishing the Stage and Reflux Requirement of Three-product Dividing Wall Columns
I. Dejanović
orcid.org/0000-0002-5773-5783
; Faculty of Chemical Engineering and Technology, University of Zagreb, Savska cesta 16, HR-10000 Zagreb, Croatia
Lj. Matijašević
; Faculty of Chemical Engineering and Technology, University of Zagreb, Savska cesta 16, HR-10000 Zagreb, Croatia
Ž. Olujić
; Process and Energy Laboratory, Delft University of Technology, Leegwaterstraat 44, 2628 CA Delft, the Netherlands
Sažetak
This paper introduces an effective method for determination and optimisation of stage and reflux requirement of a three-product dividing wall column, arranged within a commercial software package by combining a fundamentally sound shortcut method providing reliable initial guesses and a detailed, four-column model, which appeared to be the most flexible among possible configurations, for both steady state and dynamic simulations.
The applicability and usability of the method is demonstrated using an industrially relevant, platformate splitter application in an aromatics plant of a petroleum refinery as the base case. Results of this study indicate that compared to actual, two-columns-
in-series configuration, a dividing wall column requires approximately 43 % less energy to deliver three fractions at required product specifications.
Ključne riječi
Distillation; energy saving; thermally coupled columns; dividing wall columns
Hrčak ID:
69833
URI
Datum izdavanja:
30.6.2011.
Posjeta: 2.588 *