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Coupling detailed radiation model with process simulation in Aspen Plus: A case study on fluidized bed combustor

Hu, Y; Wang, J; Tan, CK; Sun, C; Liu, H; (2018) Coupling detailed radiation model with process simulation in Aspen Plus: A case study on fluidized bed combustor. Applied Energy , 227 pp. 168-179. 10.1016/j.apenergy.2017.08.030. Green open access

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Abstract

While providing a fast and accurate tool for simulating fluidized beds, the major limitations of classical zero-dimensional ideal reactor models used in process simulations become irreconcilable, such as models built into commercial software (e.g. Aspen Plus®). For example, the limitations of incorporating heat absorption by the water wall and super-heaters and inferring thermal reciprocity between each reactor model/module. This paper proposes a novel modelling approach to address these limitations by incorporating an external model that marries the advantages of the zone method and Aspen Plus to the greatest extent. A steady state operation of a 0.3 MW atmospheric bubbling fluidized-bed combustor test rig was simulated using the developed modelling approach and the results were compared with experimental data. The comparison showed that the predictions were in agreement with the measurements. Further improvement is to be expected through incorporating more realistic zoned geometry and more complex reaction mechanisms. In addition, the developed model has a relatively modest computing demand and hence demonstrates its potential to be incorporated into process simulations of a whole power plant.

Type: Article
Title: Coupling detailed radiation model with process simulation in Aspen Plus: A case study on fluidized bed combustor
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.apenergy.2017.08.030
Publisher version: http://doi.org/10.1016/j.apenergy.2017.08.030
Language: English
Additional information: Copyright © The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://www.creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed.
Keywords: Zone method, Aspen Plus, Fluidized beds, Process simulation, Radiation analysis
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10066191
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