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Browsing by Author "Bendib, Riad"

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    Contribution to improve the dynamic control of a binary distillation column
    (Springer, 2017) Bendib, Riad; Bentarzi, Hamid
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    Control configurations and assessment of interactions indistillation columns
    (2005) Bendib, Riad
    La distillation reste pour beaucoup de raisons la technique de séparation la plus importante dans le domaine de pétrole. Les colonnes de distillation constituent une partie considérable du capital d'investissement dans les raffineries à travers le monde, et cela fait du contrôle des colonnes de distillations un champ attirant pour les chercheurs. Notre travail s'inscrit dans le cadre de la commande multi-boucles de la colonne de distillation. L'objectif principal de notre travail consiste à étudier et quantifier le phénomène des interactions sur les colonnes de distillations. Les différents travaux concernant le sujet font l'objet de six chapitres qui ont organisé comme suit: Le chapitre 1 présente des généralités sur la commande multi variable, car les colonnes de distillations et les autres procédés industriels sont très fréquemment multi-variables. Etant donné que le domaine multi-variables est très large, nous avons choisi seuls les applications ayant une relation avec notre sujet (l'interaction). Le chapitre 2 est consacré à la présentation des effets des interactions sur les systèmes multi variables et nous avons présenté quelques méthodes qui sont utilisées pour mesurer les interactions dans les systèmes multi-boucles. Dans le chapitre 3 nous avons mis l'accent sur la théorie de distillation dont la connaissance est indispensable pour toute personne du domaine; puis nous avons élaboré le modèle mathématique de deux colonnes de distillation (A (82 états) et B (11 états)); c'est ces modèles que nous allons utiliser par la suite Dans le chapitre 4, nous avons étudié huit (les plus connus) configurations de contrôle dont nous avons comparés sur la base d'interactions et de propagation de perturbation. Dans le chapitre 5 nous avons étudié l'effet de rétention liquide dans le plateau d'alimentation sur le degré d'interactions existent au colonne de distillation (la configurations DV) et, finalement dans le chapitre six nous avons étudié l'effet de location de plateau d'alimentation sur les interactions existant entre les boucles de la colonne de distillation B
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    Design of an Advanced Optimal Fuzzy Controller For a Binary Distillation Column
    (Université M'hamed Bougara de Boumerdès, 2024) Bendib, Riad; Mechhoud, El-arkam; Bentarzi, Hamid; Batout, Naoual
    The most common control philosophy followed in the chemical process industries is the SISO system using the conventional PID controller algorithms. One drawback is relying on models for both control and design work in Chemical process industries (CPI) is that many problems are very complex and accurate models are difficult, if not impossible to obtain. To overcome these problems, it will be helpful to apply techniques that use human judgment and experience rather than precise mathematical models, which in the major cases deduced from the linearization of the system and simplification hypothesis. The fuzzy logic systems are capable of handling complex, nonlinear systems using simple solutions. However, obtaining an optimal set of fuzzy membership functions is not an easy task. In this chapter a solution based on artificial intelligence is proposed to improve the control of a binary distillation column. The solution is based on the use of the advantages of both fuzzy logic and genetic algorithms. The fuzzy logic is used as a supervisory PI controller that is a simple PI controller that generally used in controlling distillation columns with parameters deduced from the fuzzy supervisor. The membership functions shape is deduced by using research algorithms based on hierarchical genetic algorithms. The results show that the Fuzzy supervisory PI controller provide an excellent tracking toward set point change
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    Investigation of the effect of design aspects on dyanamic control of a binary distillation column
    (IEEE, 2015) Bendib, Riad; Bentarzi, Hamid; Youcef, Zennir
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    Optimization and improvement of the overall performance of an industriale plant
    (2017) Bendib, Riad
    The aim of our work is to enhance the overall performance of an industrial plant , the fact that can be achieved by reducing the energy consumption and augmenting the safety of the plant. In the work we have considered a petrochemical plant where the distillation columns are considered as the major part since 40% of the energy consumed in a petrochemical plant is allocated in the distillation column. To improve the energy saving we deal with two methods the first is the use of design modification and the second is a new strategy based on artificial intelligent ( fuzzy logic approach). To enhance the safety in the considered palnt we propose the application of an integration frame between HAZOP and SIL studies for a fired heater the equipment that is considered as the main source of explosions in any petrochemical plant since in the fired heater the crude is heated to reach a high degrees of temperature in order simplify the product separation in the distillation column. Many recommendations and results are included in thesis

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