This work presents a robust method for the integrated design and operation of batch distillation whereby optimal column sizing, process flexibility and operating policies are obtained simultaneously based on the complex economic trade-offs between capital investment, production revenue and utility costs. The proposed stochastic framework, which utilises a genetic algorithm and a penalty functio...

The systematic generation of process alternatives for multicomponent heterogeneous or homogeneous distillation systems is described. Alternatives based on distillation and decanting alone must generally be expanded by mixing and occasionally by recycling to provide highpurity products. For azeotropic mixtures, systematic considerations of recycles further expand those alternatives to meet the a...

The jet and diesel fuels production line has been simulated using the universal simulating program ChemCad. choice of rectification process calculation module was substantiated. Grayson-Streed Lee Kesler models were used for thermodynamic system phase equilibrium multicomponent mixture. model an oil mixture distillation unit developed. temperature profile column obtained; optimization problem s...

Newton and quasi-Newton methods have been used in chemical process design and optimization calculations for quite some time. They continue to be used today, both in the traditional sense and as part of the more recent hybrid method. While Newton-based fixed-point methods have been used to solve many different kinds of chemical process design and optimization problems, perhaps the point of singl...

This work focuses on modelling, simulation and process analysis of hybrid membrane separations namely on distillation and pervaporation. Such hybrid process can be applied for the separation of multicomponent azeotropic mixtures without the use of entrainer. Its application is illustrated by the separation of a non-ideal ternary mixture of acetone, isopropanol and water. The extended abstract d...

In order to control product compositions in a multicomponent distillation column, the distillate and bottom compositions are estimated from on-line measured process variables. In this paper, inferential models for estimating product compositions are constructed using dynamic Partial Least Squares (PLS) regression, on the basis of simulated time series data. It is found that the use of past meas...

A steady state, multicomponent distillation model particularly suited for fractionation of crude oil has been developed based on equilibrium stage relations. For a mixture of C components, the present formulation uses Cq3 iteration variables namely the mole fractions of the components, temperature, total liquid and total vapor flow rates on each stage. This choice of variables makes the present...