Dynamic models for safety shutdown of distillation columns

Bodizs, L.; Hahn, M.; Rix, A.; Schallenberg, J.

doi:10.1016/j.cherd.2015.03.030

Cited by 7 publications

(6 citation statements)

References 13 publications

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“…In ähnlicher Weise lässt sich auch der Einfluss der Schließzeit von Ventilen oder konstruktiver Parameter wie Bodenabstand oder Wehrhöhe effizient ermitteln. Das Leerlaufverhalten der Kolonneneinbauten hat Einfluss auf die Druckanstiegsgeschwindigkeit und muss adäquat modelliert werden [8]. Siebböden laufen schneller leer als Ventilböden, in Packungskolonnen leisten die Flüssigkeitssammler einen erheblichen Beitrag zum Gesamt-Hold-up.…”

Section: Destillationskolonneunclassified

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Dynamische Prozesssimulation als Werkzeug in der Sicherheitsanalyse

Hecht

Rix

Paul

et al. 2020

Chemie Ingenieur Technik

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Dynamische Simulationen gewinnen an Bedeutung zur Unterstützung von Sicherheitsanalysen, da sie es erlauben, nichtlineare dynamische Zusammenhänge auch über die Grenzen individueller Apparate oder Prozesseinheiten hinweg transparent zu machen und die Effektivität von Gegenmaßnahmen zu quantifizieren. Sie leisten einen Beitrag zum Design wirksamer Absicherungskonzepte und helfen so, übermäßig konservative Auslegungen zu vermeiden. Der ausreichende Geltungsbereich fluiddynamischer Modelle aus Programm-Bibliotheken ist zu validieren. Hier sind oft Modellerweiterungen nötig.

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Section: Destillationskolonneunclassified

“…6 an einer Laborkolonne stellen Bodizs et al. 8 ein Experiment an einer Produktionskolonne vor, Abb. 1.…”

Section: Dynamische Modellierungunclassified

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Dynamische Prozesssimulation als Werkzeug in der Sicherheitsanalyse

Hecht

Rix

Paul

et al. 2020

Chemie Ingenieur Technik

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“…In chemical industry columns are apparatus used in many different technologies, such as fractionation [1][2][3], polymerization [4][5][6][7] or esterification [8,9]. The main separating process in chemical industry represents fractionation, and it is very important to find means to improve the process or to make it more economic efficient [10] or safety [11].…”

Section: Introductionmentioning

confidence: 99%

Heat transfer influence on fractionation in flooded packed columns

Popa¹,

Boran²,

Moșoarcă³

et al. 2019

Studia UBB Chemia

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In packed fractionation, the liquid phase can be forced to become continuous, and the vapor phase dispersed, realizing emulsification regime. The paper presents the efficiency comparing results of packed fractionation with respect to the fractionation in an empty flooded column, as well as the influence of the heat flux and of the temperature inside the column's jacket. Experiments for determining the boiling heat transfer of the different methanol-ethanol concentration mixtures were performed. The variation of the boiling heat transfer coefficient at different concentrations of methanol-ethanol mixtures has a minimum, corresponding to the maximum of the difference between concentrations of vapor phase in equilibrium with the liquid phase.

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“…In this manner, risks are quantified thanks to the knowledge of the process abnormal behavior ( Gabbar et al, 2003 ). This description of the dynamic evolution of the operating parameters allows recommending the appropriate safety barriers ( Luyben, 2012a ) and evaluating new safeguard methods ( Bodizs et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Deviation propagation analysis along a cumene process by using dynamic simulations

Murillo

Berdouzi

Olivier-Maget

et al. 2018

Computers & Chemical Engineering

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a b s t r a c tThe dynamic response of benzene alkylation process to a set of deviations is analyzed with Aspen Plus Dynamics. A quantitative risk assessment is developed through simulations of deviation scenarios. The process comprises a reactor and three distillation columns with a recycle stream. The simulation scenarios are determined according to lessons learnt from accidents. This study underlines the conditions that induce an overpressure or a flooding in a distillation column. Three scenarios are proposed: feed flowrate variations, coolant flowrate reduction and cooling of the reboiler steam. Thereafter, the results allow calculating a set of risk indexes related to flooding and overpressure phenomena. This study underlines the deviation propagation effects that can be expected in all the process equipment. Moreover, it represents a significant contribution to the definition of the process control strategy and the necessary safety barriers.

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Dynamic models for safety shutdown of distillation columns

Cited by 7 publications

References 13 publications

Dynamische Prozesssimulation als Werkzeug in der Sicherheitsanalyse

Dynamische Prozesssimulation als Werkzeug in der Sicherheitsanalyse

Heat transfer influence on fractionation in flooded packed columns

Deviation propagation analysis along a cumene process by using dynamic simulations

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