Spelling suggestions: "subject:"trickle bed reactors"" "subject:"prickle bed reactors""
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Magnetic resonance studies of temperature and chemical composition in trickle bed reactorsAbegão, Fernando José Russo January 2012 (has links)
No description available.
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Velocity mapping in trickle-bed reactors and multiphase systems using MRISankey, Mark Henry January 2009 (has links)
No description available.
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The morphology of solid-liquid contacting efficiency in trickle-flowVan Houwelingen, Arjan. January 2006 (has links)
Thesis (M. Eng.)(Chemical)--University of Pretoria, 2006. / Includes summary. Includes bibliographical references. Available on the Internet via the World Wide Web.
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The effect of prewetting on the residence time distribution and hydrodynamic parameters in trickle bed reactorsWales, Nadine Jenifer. January 2007 (has links)
Thesis (M.Eng. (Chemical Engineering)) -- University of Pretoria, 2007. / Includes bibliographical references.
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Trickle flow multiple hydrodynamic states the effect of flow history, surface tension and transient upsets /Van der Westhuizen, Ina. January 2006 (has links)
Thesis (M.Eng. (Chemical Engineering)) -- Universiteit van Pretoria, 2006. / Includes bibliographical references.
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The Morphology of trickle flow liquid holdupVan der Merwe, Werner. January 2004 (has links)
Thesis (M.Eng.(Chemical Engineering))--University of Pretoria, 2004. / Title from opening screen (viewed March 18, 2005). Includes summary. Includes bibliographical references.
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Hydrogenation of naphthalene and coal tar distillate over Ni/Mo/Al₂O₃ catalyst in a trickle bed reactorBhagavatula, Abhijit. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2009. / Title from document title page. Document formatted into pages; contains xii, 119 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 114-119).
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Trickle flow hydrodynamic multiplicityVan der Merwe, Werner. January 2007 (has links)
Thesis (PhD.)(Chemical Engineering)--University of Pretoria, 2007. / Includes abstract. Includes bibliographical references.
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Solid-liquid mass transfer in trickle bed reactorsJoubert, Rita. January 2009 (has links)
Thesis (M.Eng.(Chemical engineering))--University of Pretoria, 2009. / Includes bibliographical references.
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The morphology of solid-liquid contacting efficiency in trickle-bed reactorsVan Houwelingen, Arjan J 02 May 2006 (has links)
Trickle-flow is traditionally modeled by means of hydrodynamic parameters such as liquid holdup, two-phase pressure drop and wetting efficiency. Several studies showed that these parameters are not only a function of flow conditions and bed properties, but also of the flow history and morphology of flow. These can have a major influence on the distribution in the bed. The effect of flow morphology on liquid holdup and pressure drop is widely discussed in literature, but little attention is paid to its effect on wetting efficiency. Trickle-bed reactor models suggest that not a only bed-averaged but also the distribution of wetting efficiency may be of importance for reactor performance. Both the average wetting efficiency and the distribution of wetting are probably a function flow history and morphology. The distribution of wetting efficiency for different flow morphologies were investigated by means of a colorometric method that was developed for this purpose. Representative wetting distributions could be obtained. Flow morphologies and liquid distributions were manipulated by means of the pre-wetting procedure that was performed prior to flow. Pulse and Levec pre-wetted beds were investigated. These distributions were explained in detail in terms of flow morphology. It was found that the average wetting efficiency in pulse pre-wetted beds are much higher than in Levec pre-wetted beds. All particles in the pulse pre-wetted beds at all investigated flow conditions were contacted by the flowing liquid. This was not the case for the Levec pre-wetted beds. It was found that the flow in Levec pre-wetted beds become similar to that in pulse pre-wetted beds at high liquid flow rates. It was investigated how these distributions can affect reactor modeling, based on popular particle-scale models that relate reactor efficiency to wetting efficiency. According to these models, the wetting efficiency distribution in pulse pre-wetted beds can be characterised by means of only its average value. This is not the case for Levec pre-wetted beds. These results are however a strong function of the models that were employed. Finally, some recommendations are made in terms of the preferred pre-wetting method or flow morphology for different types of reactions. These recommendations are also based on models and have not been verified with experiments. / Dissertation (MEng (Chemical Engineering))--University of Pretoria, 2007. / Chemical Engineering / unrestricted
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