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Evaluation of a gas-liquid stirred reactor emulator via network models

Backmixed stirred reactor has always been the first choice equipment for carrying out gas-liquid reactions. However, they may not be the best, mainly because of the non-uniform gas distribution in the vessel. Moreover, the gas liquid flow behaviour is not clearly understood partly due to the complex...

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Main Authors: Saidina Amin, Nor Aishah, Mann, R
Format: Article
Language:English
Published: 1989
Subjects:
T Technology (General)
Online Access:http://eprints.utm.my/id/eprint/4816/1/NoorAishahSaidinaAmin1989_EvaluationOfAGasLiquid.pdf
http://eprints.utm.my/id/eprint/4816/
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spelling my.utm.48162010-06-01T03:20:59Z http://eprints.utm.my/id/eprint/4816/ Evaluation of a gas-liquid stirred reactor emulator via network models Saidina Amin, Nor Aishah Mann, R T Technology (General) Backmixed stirred reactor has always been the first choice equipment for carrying out gas-liquid reactions. However, they may not be the best, mainly because of the non-uniform gas distribution in the vessel. Moreover, the gas liquid flow behaviour is not clearly understood partly due to the complex interactions between gas and liquid. Due to these reasons, a model which can first predict the internal behaviour of two-phase flow accurately is needed. A2-D experimental rig has been used to study the liquid flow behaviour. From photographic evaluations, valuable insight of the gas-liquid flow in the vessel is obtained. Two models have been tested to evaluate the experimental results. The models are able to predict the local gas hold-up, which is an important variable to predict gas-liquid flow pattern. The first model is the simple zones-in-loops based on the gas and liquid flowing in loops through a series of eight backmixed zones in the half 2-D stirred vessel. The second model is a more complex equal sized square cells network which accommodates a more realistic liquid flow pattern and thus, a more successful prediction of the two-phase flow behaviour. The predicted local gas hold-ups are exhibited on a unique 3-D spatial map. They display very encouraging predictive values in comparison with the experimental results. With improvements in the bubble detection techniques and also by assuming non-uniform bubble size the model has a potential to predict accurately not only the hydrodynamics characteristics, but also the physico-chemical interactions. 1989 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/4816/1/NoorAishahSaidinaAmin1989_EvaluationOfAGasLiquid.pdf Saidina Amin, Nor Aishah and Mann, R (1989) Evaluation of a gas-liquid stirred reactor emulator via network models. Proceedings of The Fifth Symposium Of Malaysian Chemical Engineers . pp. 338-354.
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic T Technology (General)
spellingShingle T Technology (General)
Saidina Amin, Nor Aishah
Mann, R
Evaluation of a gas-liquid stirred reactor emulator via network models
description Backmixed stirred reactor has always been the first choice equipment for carrying out gas-liquid reactions. However, they may not be the best, mainly because of the non-uniform gas distribution in the vessel. Moreover, the gas liquid flow behaviour is not clearly understood partly due to the complex interactions between gas and liquid. Due to these reasons, a model which can first predict the internal behaviour of two-phase flow accurately is needed. A2-D experimental rig has been used to study the liquid flow behaviour. From photographic evaluations, valuable insight of the gas-liquid flow in the vessel is obtained. Two models have been tested to evaluate the experimental results. The models are able to predict the local gas hold-up, which is an important variable to predict gas-liquid flow pattern. The first model is the simple zones-in-loops based on the gas and liquid flowing in loops through a series of eight backmixed zones in the half 2-D stirred vessel. The second model is a more complex equal sized square cells network which accommodates a more realistic liquid flow pattern and thus, a more successful prediction of the two-phase flow behaviour. The predicted local gas hold-ups are exhibited on a unique 3-D spatial map. They display very encouraging predictive values in comparison with the experimental results. With improvements in the bubble detection techniques and also by assuming non-uniform bubble size the model has a potential to predict accurately not only the hydrodynamics characteristics, but also the physico-chemical interactions.
format Article
author Saidina Amin, Nor Aishah
Mann, R
author_facet Saidina Amin, Nor Aishah
Mann, R
author_sort Saidina Amin, Nor Aishah
title Evaluation of a gas-liquid stirred reactor emulator via network models
title_short Evaluation of a gas-liquid stirred reactor emulator via network models
title_full Evaluation of a gas-liquid stirred reactor emulator via network models
title_fullStr Evaluation of a gas-liquid stirred reactor emulator via network models
title_full_unstemmed Evaluation of a gas-liquid stirred reactor emulator via network models
title_sort evaluation of a gas-liquid stirred reactor emulator via network models
publishDate 1989
url http://eprints.utm.my/id/eprint/4816/1/NoorAishahSaidinaAmin1989_EvaluationOfAGasLiquid.pdf
http://eprints.utm.my/id/eprint/4816/
_version_ 1643644155159642112
score 13.211869

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