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Probing into Styrene Polymerization Runaway Hazards: Effects of the Monomer Mass Fraction
[Image: see text] Polymerization reactions have caused a number of serious incidents in the past; they are prone to reaction runaways because of their exothermic and autoaccelerating nature. To minimalize the risk, the reaction is commonly performed in a solvent as empirical industrial practice. In...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648732/ https://www.ncbi.nlm.nih.gov/pubmed/31459904 http://dx.doi.org/10.1021/acsomega.9b00004 |
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author | Zhao, Lin Zhu, Wen Papadaki, Maria I. Mannan, M. Sam Akbulut, Mustafa |
author_facet | Zhao, Lin Zhu, Wen Papadaki, Maria I. Mannan, M. Sam Akbulut, Mustafa |
author_sort | Zhao, Lin |
collection | PubMed |
description | [Image: see text] Polymerization reactions have caused a number of serious incidents in the past; they are prone to reaction runaways because of their exothermic and autoaccelerating nature. To minimalize the risk, the reaction is commonly performed in a solvent as empirical industrial practice. In this work, the thermal runaway hazards of the ethylbenzene–styrene system with different monomer mass fractions were calorimetrically investigated up to temperatures where decomposition products are unlikely to be produced. Experiments showed that the polymerization runaway “onset” temperature inversely increased with the monomer mass fraction. Experiment and thermodynamic calculations showed that volatile diluent increased system vapor pressure even at a lower adiabatic temperature rise and verified that moderation of the risks could be achieved if the monomer mass fraction is below ca. 85%. A lumped kinetic model developed by Hui and Hamielec was used to predict the runaway profile of this reaction under different dilutions, and the agreement was excellent. |
format | Online Article Text |
id | pubmed-6648732 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-66487322019-08-27 Probing into Styrene Polymerization Runaway Hazards: Effects of the Monomer Mass Fraction Zhao, Lin Zhu, Wen Papadaki, Maria I. Mannan, M. Sam Akbulut, Mustafa ACS Omega [Image: see text] Polymerization reactions have caused a number of serious incidents in the past; they are prone to reaction runaways because of their exothermic and autoaccelerating nature. To minimalize the risk, the reaction is commonly performed in a solvent as empirical industrial practice. In this work, the thermal runaway hazards of the ethylbenzene–styrene system with different monomer mass fractions were calorimetrically investigated up to temperatures where decomposition products are unlikely to be produced. Experiments showed that the polymerization runaway “onset” temperature inversely increased with the monomer mass fraction. Experiment and thermodynamic calculations showed that volatile diluent increased system vapor pressure even at a lower adiabatic temperature rise and verified that moderation of the risks could be achieved if the monomer mass fraction is below ca. 85%. A lumped kinetic model developed by Hui and Hamielec was used to predict the runaway profile of this reaction under different dilutions, and the agreement was excellent. American Chemical Society 2019-05-03 /pmc/articles/PMC6648732/ /pubmed/31459904 http://dx.doi.org/10.1021/acsomega.9b00004 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Zhao, Lin Zhu, Wen Papadaki, Maria I. Mannan, M. Sam Akbulut, Mustafa Probing into Styrene Polymerization Runaway Hazards: Effects of the Monomer Mass Fraction |
title | Probing into Styrene Polymerization Runaway Hazards:
Effects of the Monomer Mass Fraction |
title_full | Probing into Styrene Polymerization Runaway Hazards:
Effects of the Monomer Mass Fraction |
title_fullStr | Probing into Styrene Polymerization Runaway Hazards:
Effects of the Monomer Mass Fraction |
title_full_unstemmed | Probing into Styrene Polymerization Runaway Hazards:
Effects of the Monomer Mass Fraction |
title_short | Probing into Styrene Polymerization Runaway Hazards:
Effects of the Monomer Mass Fraction |
title_sort | probing into styrene polymerization runaway hazards:
effects of the monomer mass fraction |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648732/ https://www.ncbi.nlm.nih.gov/pubmed/31459904 http://dx.doi.org/10.1021/acsomega.9b00004 |
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