Showing papers by "Cíntia Soares published in 2001"

Validations of the nonequilibrium stage model and of a new efficiency correlation for non ideal distillation process through simulated and experimental data

Abstract: Publisher Summary This chapter discusses the robust software developed for distillation process involving the nonequilibrium stage model, the equilibrium stage model with Barros & Wolf correlation for efficiency calculation, the mass and heat transfer calculations, and the automatic procedure for the comparison of profiles calculated and obtained from experimental data. The case study is the system ethanol/water separation. The performance of the equilibrium stage model with the new correlation for efficiency is compared. An empirical efficiency equation is used to evaluate the behavior of temperature and composition profiles in a distillation column. Equation is obtained based on the techniques of factorial design, and it is dependent on the properties of the mixture, for the calculation of plate and component efficiency. The computing time of the nonequilibrium stage model is quite large for on-line control application; it is very important to carry out the evaluation of the equilibrium stage model using the new efficiency correlation in relation to the more realistic nonequilibrium stage model and also with experimental data.