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Experimental evaluation of the effect of a modified port‐location mode on the performance of a three‐zone simulated moving‐bed process for the separation of valine and isoleucine
Authors:Chanhun Park  Hee‐Geun Nam  Pung‐Ho Kim  Sungyong Mun
Institution:Department of Chemical Engineering, Hanyang University, Seoul, Korea
Abstract:The removal of isoleucine from valine has been a key issue in the stage of valine crystallization, which is the final step in the valine production process in industry. To address this issue, a three‐zone simulated moving‐bed (SMB) process for the separation of valine and isoleucine has been developed previously. However, the previous process, which was based on a classical port‐location mode, had some limitations in throughput and valine product concentration. In this study, a three‐zone SMB process based on a modified port‐location mode was applied to the separation of valine and isoleucine for the purpose of making a marked improvement in throughput and valine product concentration. Computer simulations and a lab‐scale process experiment showed that the modified three‐zone SMB for valine separation led to >65% higher throughput and >160% higher valine concentration compared to the previous three‐zone SMB for the same separation.
Keywords:Continuous separation  Process optimization  Simulated moving bed  Valine
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