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https://hdl.handle.net/2440/57959
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Type: | Journal article |
Title: | Gas holdup and bubble dynamics in a three-phase internal loop reactor with external slurry circulation |
Author: | Zhang, K. Qi, N. Jin, J. Lu, C. Zhang, H. |
Citation: | Fuel: the science and technology of fuel and energy, 2010; 89(7):1361-1369 |
Publisher: | Elsevier Sci Ltd |
Issue Date: | 2010 |
ISSN: | 0016-2361 |
Statement of Responsibility: | Kai Zhang, Nana Qi, Jiaqi Jin, Chunxi Lu and Hu Zhang |
Abstract: | As modified three-phase fluidized reactors, loop reactors have been widely used in the area of chemical and energy processes. An external slurry circulation is introduced into a traditional internal loop reactor to improve the transfer between gas and slurry phases. Gas holdup and bubble dynamics are investigated by using the double-sensor conductivity probe technique in the present work. The results show that gas holdup inside the draft tube is greatly affected by the geometrical configuration and is much higher than that in the corresponding section of the annular region. Local, section-averaged, and overall gas holdups increase with increasing superficial gas velocity, while the effects of solid loading and external slurry circulation velocity are less significant than that of superficial gas velocity. Both local bubble size and bubble rise velocity vary significantly in different regions. © 2009 Elsevier Ltd. All rights reserved. |
Keywords: | Three-phase internal loop reactor External slurry circulation Gas holdup Bubble size Bubble rise velocity |
Description: | 17th International Symposium on Alcohol Fuels |
Rights: | Copyright © 2009 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.fuel.2009.09.009 |
Published version: | http://dx.doi.org/10.1016/j.fuel.2009.09.009 |
Appears in Collections: | Aurora harvest 5 Chemical Engineering publications |
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