Using pseudo-linearization in simulating the dynamics of a multicomponent distillation column

Haeho ju, Stanley Finkelstein

Research output: Contribution to journalArticlepeer-review

Abstract

This paper describes a method for using the S/360 CSMP digital simulation language to implement the computer simulation of a nonlinear model of a multi component distillation column. The method makes it unnecessary to linearize the nonlinear vapor-liquid equilibrium relationship by employing a “pseudo- linearization” approach to this nonlinearity. This approach yields a computer simulation capable of operating over the complete range of the original model. The method is applied to a model of a ternary (benzene-toluene-xylene) distillation column which consists of 11 plates, a condenser, and a reboiler. The simulation results are then compared to known experimental results as a means of validating the simulation. Except for initial transients, the two sets of results are in close agreement, which sug gests that the pseudo-linearization technique pro duces a satisfactory model of the distillation column.

Original languageEnglish (US)
Pages (from-to)49-54
Number of pages6
JournalSimulation
Volume25
Issue number2
DOIs
StatePublished - Aug 1975

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