scholarly journals Electrical resistance tomography for gas holdup in a gas-liquid stirred tank reactor

2017 ◽  
Vol 170 ◽  
pp. 476-490 ◽  
Author(s):  
Madhavi V. Sardeshpande ◽  
Suraj Gupta ◽  
Vivek V. Ranade
Author(s):  
Jason J. Ford ◽  
Theodore J. Heindel ◽  
Terrence C. Jensen

X-ray computed tomography (CT) is used to explore the differences in gas dispersion in a gas-sparged stirred-tank reactor (STR) for different operating conditions. X-ray CT imaging is completed for various impeller speeds and gas flow rates in a 0.21 m ID STR made out of acrylic and equipped with a nylon Rushton-type impeller. From the CT slices, major differences in local time-averaged gas holdup can be seen, depending on the operating condition. Completely dispersed conditions have a relatively uniform holdup profile while flooded conditions have an increase in gas holdup towards the center of the tank. The high resolution of the X-ray system allows for visualizing time-averaged gas flow details such as low gas holdup regions directly above the impeller region under certain operating conditions and recirculation regions behind the baffles.


1979 ◽  
Vol 44 (7) ◽  
pp. 2184-2195
Author(s):  
Vladimír Herles ◽  
Jan Čermák ◽  
Antonín Havlíček

The paper deals with the analysis of the dynamic behavior of the 1st order system with two random parameters. The theoretical results have been compared with experiments on flow model of a stirred tank reactor.


2009 ◽  
Vol 11 (36) ◽  
pp. 7885 ◽  
Author(s):  
Dung L. Che ◽  
Jared D. Smith ◽  
Stephen R. Leone ◽  
Musahid Ahmed ◽  
Kevin R. Wilson

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