Model Gain Scheduling Control of an Ethyltert-Butyl Ether Reactive Distillation Column

2003 ◽  
Vol 42 (15) ◽  
pp. 3584-3591 ◽  
Author(s):  
Budi H. Bisowarno ◽  
Yu-Chu Tian ◽  
Moses O. Tadé
Keyword(s):  
Distillation Column ◽  
Reactive Distillation ◽  
Gain Scheduling ◽  
Butyl Ether ◽  
Gain Scheduling Control

Combined Gain-Scheduling and Multimodel Control of a Reactive Distillation Column

2004 ◽  
Vol 37 (1) ◽  
pp. 791-796
Author(s):  
Budi H. Bisowarno ◽  
Yu-Chu Tian ◽  
Moses O. Tadé
Keyword(s):  
Distillation Column ◽  
Reactive Distillation ◽  
Gain Scheduling

scholarly journals Modeling Of A Reactive Distillation Column: Methyl Tertiary Butyl Ether (Mtbe) Simulation Studies

1970 ◽  
Vol 4 (2) ◽  
Author(s):  
Ismail Mohd Saaid Abdul Rahman Mohamed and Subhash Bhatia
Keyword(s):  
Distillation Column ◽  
Reactive Distillation ◽  
Relaxation Method ◽  
Differential Algebraic Equations ◽  
Operating Conditions ◽  
Integration Scheme ◽  
Algebraic Equations ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Proposed Model

A process simulation stage-wise reactive distillation column model formulated from equilibrium stage theory was developed. The algorithm for solving mathematical model represented by sets of differential-algebraic equations was based on relaxation method. Numerical integration scheme based on backward differentiation formula was selected for solving the stiffness of differential-algebraic equations. Simulations were performed on a personal computer (PC Pentium processor) through a developed computer program using FORTRAN90 programming language. The proposed model was validated by comparing the simulated results with the published simulation results and with the pilot plant data from the literature. The model was capable of predicting high isobutene conversion for heterogeneous system, as desirable in industrial MTBE production process. The comparisons on temperature profiles, liquid composition profile and operating conditions of reactive distillation column also showed promising results. Therefore the proposed model can be used as a tool for the development and simulation of reactive distillation column.Keywords: Modeling, simulation, reactive distillation, relaxation method, equilibrium stage, heterogeneous, MTBE

Influence of the reactive distillation column configuration on its performance: A computational study

2008 ◽  
Vol 62 (1) ◽  
Author(s):  
Zuzana Švandová ◽  
Jozef Markoš ◽  
L’udovít Jelemenský
Keyword(s):  
Flow Rate ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Computational Study ◽  
Reaction System ◽  
Reflux Ratio ◽  
Feed Flow Rate ◽  
Butyl Ether ◽  
Dynamic Simulations ◽  
Tertiary Butyl

AbstractComparison of the performance of a reactive distillation column with three different hardware configurations is presented. As a reaction system the methyl tertiary-butyl ether (MTBE) synthesis has been chosen. The sieve tray columns with catalyst (encased inside wire gauze envelopes) placed along the liquid flow path differ in the number of reactive trays. The column simulations have been performed using the nonequilibrium model. The steady state behaviour of the three different hardware configurations was studied regarding the three input parameters; feed flow rate of methanol, feed flow rate of butenes, and reflux ratio. It has been shown that by varying the location of the methanol feed stage, the columns exhibit significantly different solution diagrams using the butenes feed flow rate as a continuation parameter. Using dynamic simulations, different perturbations of the manipulated variables were found to cause transitions between multiple steady states and these were also investigated. The major objective of this paper is to demonstrate the importance of the hardware choice in the performance of a reactive distillation column e.g. during the start-up or if occasional variations of the operating parameters occur.

scholarly journals Multi-Output Soft Sensor with a Multivariate Filter That Predicts Errors Applied to an Industrial Reactive Distillation Process

Mathematics ◽  
2021 ◽  
Vol 9 (16) ◽  
pp. 1947
Author(s):  
Vladimir Klimchenko ◽  
Andrei Torgashov ◽  
Yuri A. W. Shardt ◽  
Fan Yang
Keyword(s):  
Distillation Column ◽  
Reactive Distillation ◽  
Optimal Estimation ◽  
Soft Sensor ◽  
Methyl Tert Butyl Ether ◽  
Model Errors ◽  
Distillation Process ◽  
Butyl Ether ◽  
Predict Model ◽  
Estimation Of Time

The paper deals with the problem of developing a multi-output soft sensor for the industrial reactive distillation process of methyl tert-butyl ether production. Unlike the existing soft sensor approaches, this paper proposes using a soft sensor with filters to predict model errors, which are then taken into account as corrections in the final predictions of outputs. The decomposition of the problem of optimal estimation of time delays is proposed for each input of the soft sensor. Using the proposed approach to predict the concentrations of methyl sec-butyl ether, methanol, and the sum of dimers and trimers of isobutylene in the output product in a reactive distillation column was shown to improve the results by 32%, 67%, and 9.5%, respectively.

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