Effect of adjusted parameters of NRTL model in design, optimization, and control of homogeneous azeotropic distillation columns
نویسندگان
چکیده
In this work we use adjusted parameters obtained with Simulated Annealing and those from Dechema Collection [1] for the NRTL model, in order to analyze their effect in the design, optimization, and control of homogeneous azeotropic distillation columns. For the design of the azeotropic sequences we use short design methodologies [2, 3], while a multiobjective genetic algorithm with constraints coupled to Aspen Plus [4] is used to optimize them. Theoretical control properties are evaluated with Singular Value Decomposition technique. Results show remarkable differences in structure, energy consumption, and performance of the sequences.
منابع مشابه
Simulation of Ethanol Extractive Distillation with Mixed Glycols as Separating Agent
Extractive distillation is an alternative for ethanol dehydration processes that has been shown to be more effective than azeotropic distillation and, in close proximity, to be very competitive against the process that uses adsorption with molecular sieves. Glycols have been shown to be the most effective solvents in extractive distillation, mainly ethylene glycol and glycerol. In this work, an...
متن کاملCombining Shortcut Methods and Rigorous Minlp Optimization for the Design of Distillation Processes for Homogeneous Azeotropic Mixtures
For the separation of azeotropic mixtures with distillation usually a number of conceptual design alternatives are generated. Instead of evaluating the economic viability of the different alternatives by repetitive simulation studies, a combination of shortcut calculations and rigorous MINLP optimization is proposed. In this two step process the shortcut calculations are used to screen and rank...
متن کاملSimulation of the Tetrahydrofuran Dehydration Process by Extractive Distillation
−− The aim of this work is to simulate and analyze an extractive distillation process (extractive distillation and recovery columns) for the separation of Tetrahydrofuran (THF)-Water azeotropic mixture using Aspen Plus® and Aspen Split simulators. Calculation of vapor liquid equilibrium of Tetrahydrofuran–Water–Entrainer system was done using the NRTL model, which binary interaction parameters ...
متن کاملDEVELOPING A NEW INITIALIZATION PROCEDURE FOR DISTILLATION COLUMN SIMULATION
The simulation of distillation columns is an essential step in design, optimization, and rating. In this paper, a new procedure has been proposed for the initial estimation of column profiles based on modified Kremser’s group method for simple and/or complex columns. The effect of this initialization algorithm on simulation procedure has been studied through two examples. The results show sig...
متن کاملDynamic Simulation of Distillation Sequences in Dew Pointing Unit of South Pars Gas Refinery
The understanding of the dynamic behavior of distillation columns has received considerable attention because distillation is one of the most widely used unit operations in chemical process industries. This paper reports a dynamic simulation study of the possible distillation columns sequences of Dew pointing unit in the second phase of South Pars Gas Refinery. In this unit, three columns are u...
متن کامل