Feasibility of extractive distillation process variants in batch rectifier column - Archive ouverte HAL Access content directly
Journal Articles Chemical Engineering and Processing: Process Intensification Year : 2005

Feasibility of extractive distillation process variants in batch rectifier column

Abstract

A systematic comparison is presented about the separation tasks of azeotropic and close-boiling mixtures applying batch extractive distillation (BED) in rectifier. All the eight possible mixture types with at most a single azeotrope (minimum and maximum boiling azeotropes with heavy, light, and intermediate boiling entrainers; and close boiling mixtures with heavy and light entrainers) are compared. The main results of the feasibility studies on the hitherto unpublished cases are presented. All the cases are feasible in batch rectifier, applying BED. The operation steps are determined by the relative position of the azeotropic composition and entrainer in bubble point ranking. The main limiting parameters (F/V, N, Epremix) are also determined by the mentioned relative position; only the existence of maximum number of stages in the rectifying section is determined by the type of the azeotrope. Use of residue curves maps (RCMs) for predicting feasibility is not generally satisfactory, but profiles maps can be used instead. Studying only the total reflux case can be misleading, and should be treated with great care. The theoretical results of separation variants applying intermediate boiling entrainer were proved experimentally.
Fichier principal
Vignette du fichier
Steger_1331.pdf (1.14 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03600497 , version 1 (07-03-2022)

Identifiers

Cite

Csaba Stéger, Viktoria Varga, Laszlo Horvath, Endre Rev, Zsolt Fonyo, et al.. Feasibility of extractive distillation process variants in batch rectifier column. Chemical Engineering and Processing: Process Intensification, 2005, 4 (11), pp.1237 -1256. ⟨10.1016/j.cep.2005.02.008⟩. ⟨hal-03600497⟩
8 View
8 Download

Altmetric

Share

Gmail Facebook X LinkedIn More