Mixing cell model for the SMB

Mixing cell model for the SMB

SMB (Simulated Moving Bed) process is a countercurrent chromatography separation process whose governing equations could be described as a number of ordinary differential equations with some boundary conditions, when equilibrium cell( or stage) model is applied. As this process is a cyclic-operated process, the process approaches to a dynamic steady state which shows constant cyclic variations for every cycle.

The governing equations and boundary conditions for the major four sections constituting a SMB are as follows:

 

 

 

 

 

 

 

 

One of the simulation results that show a dynamic variation of extract concentration and its purity is as follows:

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