Modelling Investigation of the Thermal Treatment of Ash-Contaminated Particulate Filters
Authors
Lao, Chung Ting
Akroyd, Jethro
Smith, Alastair
Morgan, Neal
Lee, Kok Foong
Nurkowski, Daniel
Kraft, Markus
Publication Date
2021-09-18Journal Title
Emission Control Science and Technology
ISSN
2199-3629
Publisher
Springer International Publishing
Volume
7
Issue
4
Pages
265-286
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Lao, C. T., Akroyd, J., Smith, A., Morgan, N., Lee, K. F., Nurkowski, D., & Kraft, M. (2021). Modelling Investigation of the Thermal Treatment of Ash-Contaminated Particulate Filters. Emission Control Science and Technology, 7 (4), 265-286. https://doi.org/10.1007/s40825-021-00197-z
Description
Funder: National Research Foundation Singapore; doi: https://doi.org/10.13039/501100001381
Funder: Shell United Kingdom; doi: https://doi.org/10.13039/100010893
Abstract
Abstract: This paper investigates the impact of thermal treatment on the pressure drop of particulate filters containing ash deposits. A one-dimensional model has been developed and applied to describe the deposition of soot and ash particles, and estimate the spatial distribution of the deposits in such filters. Phenomenological models have been developed to describe the potential sintering and cracking of the ash deposits caused by thermal treatment of the filter. The model results are in good agreement with experimental measurements of the reduction in the pressure drop in thermally treated filters. It was found that crack formation in the ash layer can lead to significant reduction of the pressure drop at relatively low temperatures. Sintering of ash deposits in the wall and the ash plug also contributes towards a decrease in filter pressure drop at higher temperatures. This work is the first attempt to model the impact of the thermal treatment of ash in particulate filters in order to support the development of future ash management strategies. The cracking of the ash layer during the thermal treatment has been identified to be the most critical effect for pressure drop reduction.
Keywords
Article, Ash, Particulate filter, Pressure drop, Emissions, Cracking, Sintering, Thermal treatment
Sponsorship
Horizon 2020 (814492)
Engineering and Physical Sciences Research Council (1622599)
Identifiers
s40825-021-00197-z, 197
External DOI: https://doi.org/10.1007/s40825-021-00197-z
This record's URL: https://www.repository.cam.ac.uk/handle/1810/330865
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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