|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 8 van 24 gevonden artikelen
| Titel: |
EVALUATION OF THE CHANGING GRAIN SIZE MODEL |
| Auteur: |
Davidson, M. L. Harrison, D. P. |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 25 (1984) nr. 1-6 pagina's 213-228 |
| Jaar: |
1984-01-01 |
| Inhoud: |
Experimental data for the reaction of hydrogen sulfide with calcined dolomite have been analyzed using the changing grain size model. The model provides an excellent match to both time-conversion and radial position-conversion data. At the higher temperatures (T ≥ 700°C), where the grain diffusion resistance is negligible, the changing grain size model is totally predictive. At lower temperatures, the experimental match is achieved by treating the grain diffusion coefficient as a “best-fit” parameter. Multi-cycle runs where a single pellet was subjected to more than one reaction/regeneration cycle were also successfully modeled by treating the initial specific surface area as an additional adjustable parameter (for all cycles except the first). The resulting decrease in specific surface area with cycle number is justified by postulating that additional sintering occurs during each high temperature cycle. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 8 van 24 gevonden artikelen
| << vorige | volgende >> |