» Download Article

Authors
Jens Strandberg, Sigurd Skogestad

Identifier
None

Index Terms
process control,distillation,control structure design,thermally coupled columns

Abstract
This paper considers the Kaibel column, a fully thermally coupled distillation column for the separation of four products in a single column with a single reboiler. The authors of this paper have built a laboratory pilot plant of a Kaibel column with the purpose of investigating its operational performance and control properties. In this paper the requirements for stable operation are discussed, and the location of temperature measurements for optimal operation is investigated.

References

[1] Adrian, T., H. Schoenmakers and M. Boll (2003).
    Model predictive control of integrated unit
    operations: Control of a divided wall column.
     CHEMICAL ENGINEERING AND
    PROCESSING 43(3), 347-355.
[2] Cao, Y., D. Rossiter and D.H. Owens (1997).
    Globally optimal control structure selection
    using branch and bound method. Submitted
    for Dycops '98.
[3] Halvorsen, I. J. (2005). Minimum energy for the
    4-product kaibel column. Technical report.
    Dept. of Chemical Engineering, NTNU, Norway.
    
[4] Halvorsen, I. J., S. Skogestad, J. C. Morud
    and V. Alstad (2003). Optimal selection
    of controlled variables. INDUSTRIAL &
    ENGINEERING CHEMISTRY RESEARCH
    42(14), 3273-3284.
[5] Kaibel, G. (1987). Distillation columns with vertical
     partitions. Chem. Eng. Technol. 10, 92-
    98. Petluyk.
[6] Kaibel, G., C. Miller, M. Stroezel, R. von
    Watzdorf and H. Jansen (2004). Industrial
     application of dividing wall distillation
    columns and thermally coupled distillation
    columns. CHEMIE INGENIEUR TECHNIK
    76(3), 258-+.
[7] Petlyuk, F. B., V. M. Platonov and D.M. Slavinskii
     (1965). Thermodynamically optimal
    method for separating multicomponent mixtures.
     International Chemical Engineering
    5(3), 555-561.
[8] Skogestad, S. (2000). Plantwide control: the
    search for the self-optimizing control structure.
     Journal of Process control 10, 487-507.
    H2000-10.
[9] Skogestad, S. (2003). Simple analytic rules for
    model reduction and pid controller tuning. J.
    of Process Control 13, 291-309. See C03-1;
    Nordic Process Control (NPC) Workshop 11,
    January 9-11, Trondheim, 2003; pages 209-
    227.
[10] Wright, R.O. (1949). Fractionation apparatus. US
     Patent No. 2471134.