Power partial-discard strategy to obtain improved performance for simulated moving bed chromatography

Area of Science:

• Chemical Engineering
• Separation Processes

Background:

• Simulated Moving Bed (SMB) chromatography is a key technology for continuous separation.
• Conventional partial-discard (PD) operations have limitations in optimizing separation performance.

Purpose of the Study:

• To introduce and evaluate a novel power partial-discard (PPD) strategy.
• To improve the separation efficiency of SMB processes.

Main Methods:

• Developed the PPD strategy, a variant of PD, introducing discard amount (DA) and varying discard length (DL).
• Compared PPD performance against conventional PD operations.

Main Results:

• PPD operations demonstrated significantly improved product purities.
• PPD offered enhanced purity for a given recovery, or enhanced recovery for a given purity, compared to PD.
• The variables DA and DL were crucial for achieving desired purity and recovery.

Conclusions:

• The PPD strategy offers superior performance over conventional PD for SMB processes.
• PPD is effective for achieving high-purity products with acceptable recoveries.
• This novel approach provides greater flexibility in optimizing separation outcomes.