Use of Single-Column Models for Efficient Computation of the Periodic State of a Simulated Moving-Bed Process

2006 ◽  
Vol 45 (15) ◽  
pp. 5314-5325 ◽  
Author(s):  
João M. M. Araújo ◽  
Rui. C. R. Rodrigues ◽  
José P. B. Mota
Keyword(s):  
Simulated Moving Bed ◽  
Efficient Computation ◽  
Moving Bed ◽  
Periodic State ◽  
Single Column

Single-column simulated-moving-bed process with recycle lag

AIChE Journal ◽  
2005 ◽  
Vol 51 (6) ◽  
pp. 1641-1653 ◽  
Author(s):  
José P. B. Mota ◽  
João M. M. Araújo
Keyword(s):  
Simulated Moving Bed ◽  
Moving Bed ◽  
Single Column

scholarly journals Single-Column Simulated Moving-Bed Process with Recycle Lag: Analysis and Applications

2007 ◽  
Vol 25 (9) ◽  
pp. 647-659 ◽  
Author(s):  
João M.M. Araújo ◽  
Rui C.R. Rodrigues ◽  
Ricardo J.S. Silva ◽  
José P.B. Mota
Keyword(s):  
Simulated Moving Bed ◽  
Moving Bed ◽  
Single Column

Experimental assessment of simulated moving bed and varicol processes using a single-column setup

2007 ◽  
Vol 1142 (1) ◽  
pp. 69-80 ◽  
Author(s):  
Rui C.R. Rodrigues ◽  
João M.M. Araújo ◽  
Mário F.J. Eusébio ◽  
José P.B. Mota
Keyword(s):  
Simulated Moving Bed ◽  
Experimental Assessment ◽  
Moving Bed ◽  
Single Column

scholarly journals Multi-Objective Optimisation of Biodiesel Synthesis in Simulated Moving Bed Reactor

Separations ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 127
Author(s):  
Nillohit Mitra Ray ◽  
Ajay K. Ray
Keyword(s):  
Design Stage ◽  
Simulated Moving Bed ◽  
Moving Bed ◽  
Multi Objective ◽  
Design Variables ◽  
Biodiesel Synthesis ◽  
Single Column ◽  
Set Up ◽  
Yield And Purity ◽  
Selection Of

In this work, multi-objective optimisation study was performed to determine the performance improvement in a simulated moving bed reactor (SMBR) for biodiesel synthesis. The selection of the operating parameters such as switching time, liquid flow rates in various sections, as well as the length and number of columns is not straightforward in an SMBR. In most cases, conflicting requirements and constraints influence the optimal selection of the decision (operating or design) variables. A mathematical model that predicts single-column experimental results well was modified and verified experimentally for multiple-column SMBR system. In this article, a few multi-objective optimisation problems were carried out for both existing set-up as well as at the design stage. A non-dominated sorting genetic algorithm (NSGA) was used as the optimisation tool for the optimisation study. Due to conflicting effect of process parameters, the multi-objective optimisation study resulted in non-dominated Pareto optimal solutions. It was shown that significant increase in yield and purity of biodiesel in SMBR was possible both for operating and at design stage.

scholarly journals Assessment of process configurations to combine enantioselective chromatography with enzymatic racemization

Adsorption ◽  
2020 ◽  
Vol 26 (7) ◽  
pp. 1199-1213
Author(s):  
Isabel Harriehausen ◽  
Katarzyna Wrzosek ◽  
Heike Lorenz ◽  
Andreas Seidel-Morgenstern
Keyword(s):  
Mandelic Acid ◽  
Promising Method ◽  
Simulated Moving Bed ◽  
Separation Unit ◽  
Moving Bed ◽  
Reliable Tool ◽  
Chromatographic Process ◽  
Single Column ◽  
Enantioselective Chromatography ◽  
Enantiopure Mandelic Acid

Abstract Enantioselective chromatography is nowadays a reliable tool for single enantiomer production from a racemate. The recovery of the distomer by racemization and recycling is a promising method to tackle the 50% yield constraint and to increase the productivity. In this paper three process configurations are compared. The production of enantiopure mandelic acid and methionine enantiomers exploiting different enzymes for racemization are evaluated as part of different chromatographic process configurations. First, the benefits of conventional simulated moving bed (SMB) chromatography in contrast to a single column batch separation unit are assessed in integrated configurations. Then, a concept of coupling the racemization with a simpler three-zone SMB unit, where one regeneration zone is removed, is evaluated.

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