Author/Authors :
Ivar J. Halvorsen and Sigurd Skogestad، نويسنده ,
Title Of Article :
Optimal operation of Petlyuk distillation: steady-state behavior
Latin Abstract :
The ``Petlyukʹʹ or ``dividing-wallʹʹ or ``fully thermally coupledʹʹ distillation column is an interesting alternative to the conven-
tional cascaded binary columns for separation of multi-component mixtures. However, the industrial use has been limited, and
diculties in operation have been reported as one reason. With three product compositions controlled, the system has two degrees
of freedom left for on-line optimization. We show that the steady-state optimal solution surface is quite narrow, and depends
strongly on disturbances and design parameters. Thus it seems dicult to achieve the potential energy savings compared to con-
ventional approaches without a good control strategy. We discuss candidate variables which may be used as feedback variables in
order to keep the column operation close to optimal in a ``self-optimizingʹʹ control scheme.
NaturalLanguageKeyword :
Petlyuk distillation , Steady-state behaviour , Optimal operation
JournalTitle :
Studia Iranica
