Optimization and Dynamics of Distillation Column Using Aspen Plus®

Taqvi, Syed Ali Ammar; Tufa, Lemma Dendena; Muhadizir, Shuhaimi

doi:10.1016/j.proeng.2016.06.484

Cited by 46 publications

(23 citation statements)

References 15 publications

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“…A PI reverse‐acting controller is applied for this purpose. Further details regarding the general setup procedure for dynamic simulations can be found in the literature , .…”

Section: Aspen Plus® Simulationmentioning

confidence: 99%

System Behavior and Predictive Controller Performance Near the Azeotropic Region

et al. 2018

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High‐purity distillation columns present challenges of nonlinearity, interactions, directionality, and ill‐conditioning for the control systems and thus exhibit poor controller performance. Effects of these issues on the performance of model predictive control in operations in near‐azeotropic regions are investigated. A dynamic model of a pilot‐scale distillation column is simulated and controlled by a linear model predictive controller. As the system moves towards the azeotropic region, the nonlinearity, directionality, and interactions of the system increase. A significant decline is observed in the system control performance since the controller incurs overshoots and offsets for negative and positive setpoint changes. The integral time absolute errors are substantially higher near the azeotropic region. Only a small operating range is able to ensure sufficient controllability near the azeotropic region.

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“…A PI reverse‐acting controller is applied for this purpose. Further details regarding the general setup procedure for dynamic simulations can be found in the literature , .…”

Section: Aspen Plus® Simulationmentioning

confidence: 99%

System Behavior and Predictive Controller Performance Near the Azeotropic Region

et al. 2018

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“…Due to its extended use and high energy demand, fractional distillation is the most studied mass transfer operation in terms of control and optimization , and is common to a list of industrial chemical processes. Distillation involves mass transfer between vapor and liquid and, like other mass transfer controlled separations, can be categorized into equilibrium‐staged and rate‐based operations.…”

Section: Introductionmentioning

confidence: 99%

“…Due to its extended use and high energy demand, fractional distillation is the most studied mass transfer operation in terms of control and optimization [15], and is common to a list of industrial chemical processes.…”

Section: Introductionmentioning

confidence: 99%

Achieving a better understanding of binary azeotropic mixtures distillation through Aspen Plus process simulations

Roman

García‐Morales

2019

Comp Applic In Engineering

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Mass transfer operations are at the heart of every chemical engineering curriculum, as they are the basis of separation procedures extensively used in the chemical industry. Distillation, which involves mass transfer between vapor and liquid phases, is, by far, the most extended separation practice. However, the presence of azeotropes in most of the mixtures with industrial interest complicates the process analysis due to tedious and complex calculations, even in the simplest case of binary mixtures. Moreover, the need for recycle streams makes convergence and variables specification very difficult as compared with the separation of nonazeotropic mixtures. Initial training in process simulators results fundamentally in high‐quality chemical engineering teaching programs. It yields a better understanding of enhanced distillation and entails the use of professional tools highly demanded by employers. This paper reports how the use of the commercial simulator Aspen Plus can help students explore azeotropic distillation by their own, and thus enables looking into aspects which are beyond the scope of problems solved by hand.

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“…At present, software for modeling chemical-technological processes, such as Aspen Plus [7], Aspen Dynamics [8,9], ChemCAD [10], and others, are widely used. The use of these tools to study the basics of mobile control is difficult because of the high costs of acquiring and supporting, limited modeling capabilities of automatic control systems and obtaining results that are not provided by the developers.…”

Section: Introductionmentioning

confidence: 99%

Research of Transient Responses in Automatic Mobile Control Systems of Distillation Process

Sheikus

2019

Technology transfer: fundamental principles and innovative tech

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In modern conditions of growth of informatization, to ensure the reliability of the functioning of distributed computer information-diagnostic and control systems, which are mandatory for consideration, there are problems of assessing security and implementing protection of operational information. The state of information protection and the reliability of computer systems for corporate monitoring and diagnosis of the railway power supply system are analyzed. The main tasks in the intellectualization of component systems are defined, namely traction electric network. The principles of information protection are proposed, which include: active protection of information; convincing protection of information, consisting in the justification of the design and measures to protect the conditions and circumstances. Such a principle as the continuity of the information protection process provides for the organization of the protection of objects at all stages of the development and operation life cycle. A variety of information protection tools provides for the exclusion of patterns at the stage of selecting cover objects and various ways to implement protection, not excluding the use of standard solutions. The combination of the above principles in the work is called an integrated approach to information security, which is the basis for the creation of computer information protection systems. According to the sphere of information security, this approach complies with international ISO standards, and for the technical protection of information and state standards it complies with the requirements of existing national legislative and regulatory documents. To ensure the security of information stored and processed in computer systems, the coordinated application of various security measures is necessary.

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Optimization and Dynamics of Distillation Column Using Aspen Plus®

Cited by 46 publications

References 15 publications

System Behavior and Predictive Controller Performance Near the Azeotropic Region

System Behavior and Predictive Controller Performance Near the Azeotropic Region

Achieving a better understanding of binary azeotropic mixtures distillation through Aspen Plus process simulations

Research of Transient Responses in Automatic Mobile Control Systems of Distillation Process

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