Gas diffusion and sorption in carbon conversion
In common carbon conversion models, effective diffusion is considered to describe mass transport of reactive gases in porous char particles. Conventionally, effective diffusion is determined by taking porosity and tortuosity of the solid char into account, however, the tortuosity cannot be determine...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
ELSEVIER SCIENCE BV
2019
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/78457 |
| _version_ | 1848763965689036800 |
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| author | Wedler, C. Arami-Niya, Arash Xiao, G. Span, R. May, E.F. Richter, M. |
| author2 | Yan, J |
| author_facet | Yan, J Wedler, C. Arami-Niya, Arash Xiao, G. Span, R. May, E.F. Richter, M. |
| author_sort | Wedler, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In common carbon conversion models, effective diffusion is considered to describe mass transport of reactive gases in porous char particles. Conventionally, effective diffusion is determined by taking porosity and tortuosity of the solid char into account, however, the tortuosity cannot be determined experimentally. Therefore, values for the tortuosity are mainly chosen to fit the respective model to experimental data. Here, we present the determination of effective diffusion by measuring the sorption kinetics utilizing a volumetric sorption analyzer to circumvent the problem of obtaining proper data for tortuosity. For this purpose, sorption kinetics were determined for carbon dioxide and methane at temperatures of (25 and 50) °C and pressures up to 115 kPa in a synthetic lignite-like solid fuel. |
| first_indexed | 2025-11-14T11:11:51Z |
| format | Journal Article |
| id | curtin-20.500.11937-78457 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:11:51Z |
| publishDate | 2019 |
| publisher | ELSEVIER SCIENCE BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-784572021-01-15T07:49:43Z Gas diffusion and sorption in carbon conversion Wedler, C. Arami-Niya, Arash Xiao, G. Span, R. May, E.F. Richter, M. Yan, J Yang, HX Li, H Chen, X Science & Technology Technology Energy & Fuels carbon conversion effective diffusion coefficients oxyfuel sorption kinetics synthetic fuel COAL GASIFICATION In common carbon conversion models, effective diffusion is considered to describe mass transport of reactive gases in porous char particles. Conventionally, effective diffusion is determined by taking porosity and tortuosity of the solid char into account, however, the tortuosity cannot be determined experimentally. Therefore, values for the tortuosity are mainly chosen to fit the respective model to experimental data. Here, we present the determination of effective diffusion by measuring the sorption kinetics utilizing a volumetric sorption analyzer to circumvent the problem of obtaining proper data for tortuosity. For this purpose, sorption kinetics were determined for carbon dioxide and methane at temperatures of (25 and 50) °C and pressures up to 115 kPa in a synthetic lignite-like solid fuel. 2019 Journal Article http://hdl.handle.net/20.500.11937/78457 10.1016/j.egypro.2019.01.422 English http://creativecommons.org/licenses/by-nc-nd/4.0/ ELSEVIER SCIENCE BV fulltext |
| spellingShingle | Science & Technology Technology Energy & Fuels carbon conversion effective diffusion coefficients oxyfuel sorption kinetics synthetic fuel COAL GASIFICATION Wedler, C. Arami-Niya, Arash Xiao, G. Span, R. May, E.F. Richter, M. Gas diffusion and sorption in carbon conversion |
| title | Gas diffusion and sorption in carbon conversion |
| title_full | Gas diffusion and sorption in carbon conversion |
| title_fullStr | Gas diffusion and sorption in carbon conversion |
| title_full_unstemmed | Gas diffusion and sorption in carbon conversion |
| title_short | Gas diffusion and sorption in carbon conversion |
| title_sort | gas diffusion and sorption in carbon conversion |
| topic | Science & Technology Technology Energy & Fuels carbon conversion effective diffusion coefficients oxyfuel sorption kinetics synthetic fuel COAL GASIFICATION |
| url | http://hdl.handle.net/20.500.11937/78457 |