Examination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations

Closed-loop processes are widely used in the chemical industry, for example in separation processes to recycle waste streams. However, the recycled streams represent a source of instability, especially when the overall system suffers a (desirable or undesirable) change in the operating conditions. I...

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Autores principales:	Mike Bothe, Nicole Lutters, Eugeny Y. Kenig
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/0847a91ce8584f8d9f842655600c2796
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spelling	oai:doaj.org-article:0847a91ce8584f8d9f842655600c27962021-11-15T21:47:51ZExamination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations10.3303/CET21881172283-9216https://doaj.org/article/0847a91ce8584f8d9f842655600c27962021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11910https://doaj.org/toc/2283-9216Closed-loop processes are widely used in the chemical industry, for example in separation processes to recycle waste streams. However, the recycled streams represent a source of instability, especially when the overall system suffers a (desirable or undesirable) change in the operating conditions. In this case, the time required to reach a steady state is significantly longer, because of oscillations encountered in the leaving stream characteristics. The dimensions of such oscillations can reach high and even hazardous values, even if the new steady state is reached in a safe operating condition. This is why the knowledge of the dynamic closed-loop process behavior is essential to prevent hazardous situations. In this work, a general rate-based model of a closed-loop chemical absorption process is presented and the results of dynamic simulations are compared with published experimental data on absorption of carbon dioxide with aqueous monoethanolamine solution. The periphery is considered using dynamic models of the liquid distributors, the liquid holdup in the bottom of the columns as well as of the relevant heat exchangers and pipelines. Based on the simulations, the influence of different closed-loop process elements on the dynamic behavior of the overall configuration can be evaluated, enabling a cause-effect analysis of hazardous situations.Mike BotheNicole LuttersEugeny Y. KenigAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Mike Bothe Nicole Lutters Eugeny Y. Kenig Examination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations
description	Closed-loop processes are widely used in the chemical industry, for example in separation processes to recycle waste streams. However, the recycled streams represent a source of instability, especially when the overall system suffers a (desirable or undesirable) change in the operating conditions. In this case, the time required to reach a steady state is significantly longer, because of oscillations encountered in the leaving stream characteristics. The dimensions of such oscillations can reach high and even hazardous values, even if the new steady state is reached in a safe operating condition. This is why the knowledge of the dynamic closed-loop process behavior is essential to prevent hazardous situations. In this work, a general rate-based model of a closed-loop chemical absorption process is presented and the results of dynamic simulations are compared with published experimental data on absorption of carbon dioxide with aqueous monoethanolamine solution. The periphery is considered using dynamic models of the liquid distributors, the liquid holdup in the bottom of the columns as well as of the relevant heat exchangers and pipelines. Based on the simulations, the influence of different closed-loop process elements on the dynamic behavior of the overall configuration can be evaluated, enabling a cause-effect analysis of hazardous situations.
format	article
author	Mike Bothe Nicole Lutters Eugeny Y. Kenig
author_facet	Mike Bothe Nicole Lutters Eugeny Y. Kenig
author_sort	Mike Bothe
title	Examination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations
title_short	Examination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations
title_full	Examination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations
title_fullStr	Examination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations
title_full_unstemmed	Examination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations
title_sort	examination of hazardous situations in industrial closed-loop processes using dynamic simulations
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/0847a91ce8584f8d9f842655600c2796
work_keys_str_mv	AT mikebothe examinationofhazardoussituationsinindustrialclosedloopprocessesusingdynamicsimulations AT nicolelutters examinationofhazardoussituationsinindustrialclosedloopprocessesusingdynamicsimulations AT eugenyykenig examinationofhazardoussituationsinindustrialclosedloopprocessesusingdynamicsimulations
_version_	1718426766562820096

Examination of Hazardous Situations in Industrial Closed-Loop Processes Using Dynamic Simulations

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