МОДЕЛИРОВАНИЕ И?МОДЕРНИЗАЦИЯ ТАРЕЛЬЧАТЫХ КОЛОНН ПРИ?ПРОВЕДЕНИИ Реакционно-Массообменных ПРОЦЕССОВ, "Теоретические Основы Химической Технологии"

Лаптев, А.Г.; Карпеев, С.В.; Лаптева, Е.А.

doi:10.7868/s0040357118010013

Cited by 2 publications

(3 citation statements)

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“…Номера тарелок определяются на предыдущих шагах метода ветвей и границ. Рассмотрим постановку задачи на l-ом шаге: На каждой итерации с целью определения нижней и верхней оценок критерия оптимальности решаются задачи (11) и (12). Найденные значения целевой функции сравниваются.…”

Section: математическое обоснование задачи оптимального проектировани...unclassified

“…Шаг 1. Формирование массива поисковых переменных: нижней и верхней оценки критерия в нулевой вершине, путем решения задач (11), (12).…”

Section: программный комплекс и алгоритм проектирования оптимальной сркunclassified

“…Данный процесс характеризуется высокими энергопотреблением и металлоемкостью [1][2][3][4][5]. Поэтому на стадии проектирования ректификационных колонн и систем необходимо принимать решения, направленные на минимизацию этих затрат при выполнении проектных требований [6][7][8][9][10][11][12]. В настоящее время для решения задач проектирования применяются упрощенные методы [1,5], термодинамические методы [4,13], методы, основанные на строгих математических моделях [9,10,[14][15][16].…”

Section: Introductionunclassified

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Algorithm and software for the optimal technological design of a system of simple distillation columns

Ziyatdinov

Emelyanov

Ryzhova

et al. 2021

Fine Chem. Technol.

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Objectives. The formalized problem of the optimal design of distillation column systems belongs to the class of mixed integer nonlinear program problems. Discrete search variables are the number of trays in the rectifying and stripping sections of columns, whereas the continuous ones are the operating modes of columns. This study aimed to develop an algorithm and a software package for the optimal technological design of a system of simple distillation columns based on the criterion of total reduced capital and energy costs using rigorous mathematical distillation models.Methods. The solution to this problem is based on the branch and bound method. A computer model of the distillation column system was developed in the environment of the Aspen Hysys software package. The Inside–Out module was used as the distillation model. The developed algorithm is implemented in the software environment of the Matlab mathematical package. To solve the conditional optimization problem, a sequential quadratic programming method-based model was used. The interaction between software add-ins in Matlab and Aspen Hysys is implemented using a Component Object Model interface.Results. Approaches to obtain the lower and upper bounds of the optimality criterion and the branching method for the implementation of the branch and bound method have been developed. In addition, an algorithm for the optimal design of a distillation column of a given topology based on the branch and bound method has been developed. Furthermore, using Matlab, a software package that implements the developed algorithm and is integrated with the universal modeling software AspenHysys has been created.Conclusions. An algorithm and a software package have been developed and implemented that allows automating the design process of distillation column systems and integration with advanced mathematical programming packages, respectively. The performance of the algorithm and software package has been evaluated using the optimal design of the debutanization column as an example.

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Section: математическое обоснование задачи оптимального проектировани...unclassified

Section: программный комплекс и алгоритм проектирования оптимальной сркunclassified

Section: Introductionunclassified

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Algorithm and software for the optimal technological design of a system of simple distillation columns

Ziyatdinov

Emelyanov

Ryzhova

et al. 2021

Fine Chem. Technol.

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Theory of a Solid–Liquid Heterogeneous Reaction to Form a Gas Phase

Meshalkin,

Orekhov,

Bykov

et al. 2023

Teoretičeskie osnovy himičeskoj tehnologii

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An analytical model of a solid–liquid heterogeneous reaction to form a gas phase was presented. The model is based on the analysis of the main parameters that have the most significant effect on the intensity of the reaction. The formation of gas–liquid dissipative structures in the form of alternating flows of reacting phases that perform relaxation pulsations was shown. The formation, detachment, and movement of bubbles were described with a satisfactory adequacy. The dynamics and conditions for the formation of a gas bubble on a solid reaction surface were characterized. Relationships were obtained for estimating the mass-transfer coefficients, which correlate with experimental data. The developed analytical model of the heterogeneous reaction will give a better insight into the essence of the melting processes in ore-thermal furnaces, which will make it possible to make changes to these processes using qualitatively new parameters of their characteristic reactions. Analysis of the hydrodynamics with the formation of the gas phase by analytical and numerical methods suggested the type of the flow of the liquid phase. Typical was the presence of hydrodynamic structures that determined the ordered movement of the liquid phase with various methods of supplying the gas phase. The values of critical mass-transfer parameters were determined. In contrast to the boiling process, a crisis of the heterogeneous reaction is impossible because of the shielding of the reaction surface.

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МОДЕЛИРОВАНИЕ И?МОДЕРНИЗАЦИЯ ТАРЕЛЬЧАТЫХ КОЛОНН ПРИ?ПРОВЕДЕНИИ Реакционно-Массообменных ПРОЦЕССОВ, "Теоретические Основы Химической Технологии"

Cited by 2 publications

References 0 publications

Algorithm and software for the optimal technological design of a system of simple distillation columns

Algorithm and software for the optimal technological design of a system of simple distillation columns

Theory of a Solid–Liquid Heterogeneous Reaction to Form a Gas Phase

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