Propane/Propylene Separation by Simulated Moving Bed II. Measurement Prediction of Binary Adsorption Equilibria of Propane, Propylene, Isobutane, and 1-Butene on 13X Zeolite

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Nabil Lamia (Author) FEUP; Miguel A. Granato (Author) FEUP; Pedro Sá Gomes (Author) FEUP; Carlos A. Grande (Author) FEUP; Luc Wolff (Author) FEUP; Philibert Leflaive (Author) FEUP; Damien Leinekugel-le-Cocq (Author) FEUP; Alírio E. Rodrigues (Author) FEUP

Journal

Title: Separation Science and Technology

Vol. 44 No. 7

Pages: 1485-1509

ISSN: 0149-6395

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 15 Citations

ISI Web of Science

Scopus - 13 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Authenticus ID: P-003-S4M

DOI: 10.1080/01496390902775935

Abstract (EN): The design of a simulated moving bed (SMB) process relies on valid thermodynamic predictions of multicomponent adsorption built up from accurate binary adsorption equilibrium data. Experimental adsorption equilibria of binary mixtures constituted by propane, propylene, isobutane and 1-butene on 13X zeolite were determined using breakthrough experiments at 373 K and 150 kPa. In addition, these binary adsorption experiments allow to confirm the choice of isobutane as an interesting desorbent for the separation of propane-propylene by SMB, since it has an intermediate selectivity between the two species to separate. Various prediction models are available in the literature but only a few of them have both physical and thermodynamical consistency. The ideal adsorbed solution theory (IAST), the thermodynamically consistent extended Toth model (TCET), and the physically-consistent extended Toth isotherm (PCET) were used to predict binary adsorption equilibria from pure component adsorption isotherms parameters. The PCET model was found suitable for representing the adsorption equilibrium of the different hydrocarbon mixtures with a reasonably good accuracy. Keywords: 1-butene; 13X zeolite; binary adsorption equilibrium; breakthrough experiment; extended Toth model; IAST; isobutane; olefin; propane; propene; propylene; separation; simulated moving bed; SMB

Language: English

Type (Professor's evaluation): Scientific