Korean Journal of Chemical Engineering

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of desorbent flowrate on simulated moving bed process

  • Lim, Young-Il (Department of Chemical Engineering, Hankyong National University)
  • Published : 2007.05.01
⟨ Previous Next ⟩

Abstract

This article presents the effects of the desorbent flowrate (or m1) on simulated moving bed (SMB) process performance at constant m2, m3 and m4, where the m-values (mj) are defined as the net flowrate ratios of the zone, j, to the solid flowrate. A complete m-plane analysis of SMB systems (ComPASS) has been developed that illustrates how the desorbent flowrate is determined within the complete m-plane (i.e., fluid-solid flowrate ratio plane) to enhance the SMB process performance. The effects of desorbent flowrate are presented numerically for linear/equilibrium and nonlinear/nonequilibrium SMB processes. The results of the studies using ComPASS show that for linear/equilibrium SMB process, it is desirable to determine the minimum desorbent flowrate (m1) within the complete separation region. For the nonlinear/nonequilibrium SMB process, the desorbent flowrate can be determined at the minimum value which maximizes the raffinate purity.

Keywords

References

  1. M. Juza, M. Mazzotti and M. Morbidelli, Trends in Biotech., 18, 108 (2000)
  2. Y. I. Lim, Korean J. Chem. Eng., 21, 836 (2004)
  3. K.-U. Klatt, G. Dunnebier, F. Hanisch and S. Engell, AIChE Symposium Series 326, 98, 239 (2002)
  4. M. Mazzotti, G. Storti and M. Morbidelli, J. Chromatogr. A, 769, 3 (1997)
  5. O. Ludemann-Hombourger, G. Pigorini, R.-M. Nicoud, D. S. Ross and G. Terfloth, J. Chromatogr. A, 947, 59 (2002)
  6. S. Ergun, Chem. Eng. Prog., 48(2), 89 (1952)
  7. R. Darby, Chemical engineering fluid dynamics, Marcel Dekker, Inc., 2nd ed. Chapter 13, New York (2001)
  8. Y. I. Lim and A. L. Lee, AIChE Annual Meeting, San Francisco, USA, Nov. 12-17 (2006)
  9. S. C. Chang, Courant number insensitive CE/SE schemes, 38th AlAA joint propulsion conference, AlAA-2002-3890, Indianapolis, USA (2002)
  10. Y. I. Lim, C. S. Chang and S. B. Jorgensen, Comput. Chem. Eng., 28(8), 1309 (2004)
  11. L. S. Pais, J. M. Loureiro and A. E. Rodrigues, AIChE J., 44(3), 561 (1998)
  12. Y. I. Lim and S. B. Jorgensen, Chem. Eng. Sci., 59, 1931 (2004)