C. Kruse et al., EXPERIMENTAL-VERIFICATION OF THE EQUILIBRIUM STAGE MODEL FOR THE DYNAMICS OF THE MULTICOMPONENT DISTILLATION CONSIDERING THE EFFECTS OF ENERGY-LOSS, Industrial & engineering chemistry research, 34(5), 1995, pp. 1810-1822
This paper on the dynamics of multicomponent distillation is based on
experimental investigations in a laboratory-scale distillation column.
The concentration and temperature profiles are obtained at the steady
-state operating point, and the transition behavior is observed by sys
tematically changing the relevant operating variables. The general sco
pe of these experiments is to evaluate and study the concentration and
temperature profiles measured along the column height. The developed
methodology for sampling at vacuum is explained. The experimental resu
lts are compared with theoretical calculations obtained by means of st
eady-state and dynamic simulation. The influence and the importance of
heat losses on the steady-state and dynamic behavior at high temperat
ure levels are investigated and discussed. The aim of these studies is
to prove the steady-state and dynamic simulation tool on the basis of
the equilibrium stage model. It is found that the simulation results
agree closely with those obtained experimentally. This refers to the c
oncentration and temperature profiles as well as to the calculated and
the experimentally used reboiler heat input. In order to achieve this
good agreement, heat losses along the column height have to be taken
into account in the simulation. Consequently, the consideration of hea
t losses is of great importance for the determination of HETP values i
n packed columns.