In the coalescence zone, we obtained ozone concentration profiles of pairs of bubbles in vertical and oblique alignments, which show rapid decrease in the interaction period and more gradual decline in the late stages of coalescence. / In the grid region, the hydrodynamics of a stream of gas injected vertically into a bed of solids was observed in a semi-circular column containing particles of several sizes and densities. This was found to be similar to those reported in the literature. Furthermore, experiments were carried out in a 15 cm diameter column to characterize the magnitude of gas transfer from spout to dense phase and from forming bubbles to dense phase. The results show that the transfer from the spout is mainly due to convective gas outflow with some molecular diffusion. While during bubble formation, the transfer seems to be molecular diffusion only, being similar in magnitude to single bubbles in fluidized beds.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.77119 |
| Date | January 1981 |
| Creators | Sit, Song P. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Chemical Engineering) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000139113, proquestno: AAINK54916, Theses scanned by UMI/ProQuest. |
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