Observation of 3-D Structure of Bubbles in a Fluidized Catalyst Bed

Autor:	Masaki Misawa, Ion Tiseanu, Naoki Ichikawa, Takami Kai, Takeshige Takahashi
Rok vydání:	2008
Předmět:	Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Materials science Fluidized bed General Chemical Engineering Bubble Mineralogy Fluidization Mechanics Catalysis
Zdroj:	ResearcherID Scopus-Elsevier
ISSN:	1939-019X 0008-4034
DOI:	10.1002/cjce.5450830119
Popis:	The interface area between the bubble and emulsion phases in a fluidized catalyst bed is one of the important parameters used to analyze and design the fluidized bed reactor. We used a fast-scanning X-ray CT system to observe the bubble shape and structure. We then obtained the transient 2-dimensional cross sectional gas-phase distribution in a fluidized catalyst bed. Using image-processing techniques, pseudo 3-dimensional images of the bubbles were reconstructed. The bubble structure was studied based on the 3-dimensional images and the previously obtained results in a 2-dimensional fluidized bed. It was found that the bubble shape was not spherical but complicated, and that the bubbles ascending in a fluidized catalyst bed consisted of some smaller bubbles.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::683e05acf3ab28db7b790fcfcb77d632 https://doi.org/10.1002/cjce.5450830119 Zobrazit plný text záznamu Plný text