Three-scale Modeling and Simulation of a Batch Suspension Polymerization Vinyl Chloride Reactor

Bárkányi, Ágnes; Németh, Sándor; Lakatos, Béla G.

doi:10.1016/b978-0-444-63456-6.50039-9

Cited by 5 publications

(6 citation statements)

References 13 publications

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“…Of course, the accuracy of the obtained results is affected by errors associated with regression laws. The ways to eliminate errors that are systematic are illustrated in Figures (3) and (4). (1-results obtained by "exact" method; 2-results obtained on the basis of "least squares" method; 3results obtained by "least squares on ordinate" method; 4-results obtained by orthogonal method).…”

Section: Resultsmentioning

confidence: 99%

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Method for determining estimates of random variable models for describing phase equilibrium in rectification processes

Mukhitdinov,

Kadirov,

Abrorov

et al. 2024

E3S Web Conf.

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The phase equilibrium modeling for multi-component systems is essential in process systems engineering. In particular, phase stability analysis, Gibbs free energy minimization and estimation of parameters in thermodynamic models are challenging global optimization problems involved in phase equilibrium calculations and modeling for both reactive and non-reactive systems. To date, many significant works have been performed in the area of global optimization, and several algorithms and computational contributions of global optimization have been used for solving these problems; global optimization methods used include both deterministic and stochastic algorithms. To the best of our knowledge, there is no review in the literature that focuses on the global optimization methods and their applications to phase equilibrium modeling and calculations. In this paper, we briefly describe the deterministic and stochastic optimization algorithms selected for our rectification process, and then consider their use for phase stability analysis, Gibbs free energy minimization, and parameter estimation in phase equilibrium models. In short, we present an overview of global optimization for modeling and computing the phase behavior of systems with and without chemical reactions, including the prediction of azeotropes and critical points.

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Section: Resultsmentioning

confidence: 99%

“…Extending the maximum likelihood method to the multivariate case leads to systems of intractable nonlinear equations. In such cases, all kinds of approaches to specifying the criteria necessary for hypothesis testing and calculating confidence intervals also become very complicated [3,4].…”

Section: Methodsmentioning

confidence: 99%

Method for determining estimates of random variable models for describing phase equilibrium in rectification processes

Mukhitdinov,

Kadirov,

Abrorov

et al. 2024

E3S Web Conf.

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show abstract

“…Polyvinyl Chloride (PVC) is one of the most widely used polymers in the world. Due to its versatile nature, PVC is used extensively across a broad range of industrial, technical and everyday applications including widespread use in building, transport, packaging, electrical, electronic and healthcare applications [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Control of reactor temperature and pressure using cascade control during polyvinyl chloride production

Kadirov,

Boeva,

Eshqobilov

et al. 2023

E3S Web Conf.

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Improvement and modernization of the technological process of polyvinyl chloride production requires the appropriate development of computer modelling systems, which ensure the following: identification and maintenance of optimal modes of technological processes that contribute to continuous operation, as well as the use of intelligent systems of modelling and control of technological devices. The article proposes pressure-dependent control of the temperature in the reactor, which affects the quality indicators of the technological process, using the cascade control method during the production of polyvinyl chloride. In this work an imitation model of the technological process was developed.

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“…Various aspects of the reaction have been studied, ranging from kinetics and thermodynamics to process control and others. Methods to model the complexity of the phenomenon, such as those suggested by Bárkányi et al [9], have proposed a populationbalanced model using the Monte Carlo method in MATLAB software to study the effects of agitation conditions on droplet formation.…”

Section: Introductionmentioning

confidence: 99%

A Joint Computer-Aided Simulation and Water-Energy-Product (WEP) Approach for Technical Evaluation of PVC Production

Aguilar-Vásquez,

Ramos-Olmos,

González-Delgado

2023

Sustainability

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Recently, polyvinyl chloride (PVC) has emerged as one of the most widely used polymers on the planet due to its versatile mechanical properties and chemical resistance. Suspension polymerization is the most employed method for its production, owing to its ability to control polymer characteristics and cost-effectiveness. However, issues such as water and energy consumption and management in the process have sparked interest in researching the performance and sustainability of the process. In this study, an approach for the technical evaluation of the PVC production process by suspension is proposed, using 11 indicators related to Water, Energy and Product (WEP), based on technical parameters and process simulation for the diagnosis of the process, framed under sustainability criteria. The simulation included the purification and drying stages of the polymer, along with a monomer recirculation stage. The properties of PVC obtained through the process simulation were over 90% accurate when compared to the literature. The technical analysis found that the process has high performance in the handling of vinyl chloride monomer (VCM) and PVC, with a production yield of 99% and an index of reused unconverted material of 99%. On the other hand, there are opportunities for improvement in the process, related to water usage management, since the indicator of wastewater production was 80% and the fractional water consumption was 1.8 m3/t. Regarding energy use, the process exhibits high consumption and an energy-specific intensity of 4682 MJ/t of PVC, but it has a low overall cost due to the use of natural gas in some stages of the process.

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Three-scale Modeling and Simulation of a Batch Suspension Polymerization Vinyl Chloride Reactor

Cited by 5 publications

References 13 publications

Method for determining estimates of random variable models for describing phase equilibrium in rectification processes

Method for determining estimates of random variable models for describing phase equilibrium in rectification processes

Control of reactor temperature and pressure using cascade control during polyvinyl chloride production

A Joint Computer-Aided Simulation and Water-Energy-Product (WEP) Approach for Technical Evaluation of PVC Production

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