The effect of the cavity formation on the energy consumption characteristics of the agitated gas–liquid bioreactor
Source abstract
Abstract
Detailed power consumption characteristics from experiments and simulations of gas–liquid stirred tanks with shear-thinning power-law liquids are presented. The motion of bubbles was investigated based on the Euler–Euler approach with a bubble cluster concept. The drag coefficient of bubbles with a constant bubble diameter was modeled as the Schiller and Naumann function. The predicted power consumption of a gas–liquid mixture shows reasonable agreement with experimental data with a maximum deviation of 8.9%. For the studied aerated systems, a qualitatively new power reduction correction equation was derived and demonstrated a reasonable agreement with experimental results compared with the literature-reported equations. The effect of the concentrations and gas flow rates on power consumption was presented. It was found that the power consumption of different mixtures is related to the change in the critical generalized Reynolds number, which was Reg = 440, 230, 100, 30, and 25 for 0.2%, 0.4%, 0.62%, 0.85%, and 1.25%, respectively.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fluid Dynamics and Mixing · Minerals Flotation and Separation Techniques · Innovative Microfluidic and Catalytic Techniques Innovation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research Center of Fluid Machinery Engineering and Technology, Jiangsu University 1 , Zhenjiang 212013, China
Hefei Huasheng Pumps and Valves Co. Ltd. 2 , No. 006, Jinhui Road, Hefei 231131, Anhui, China
College of Hydraulic Science and Engineering, Yangzhou University 3 , Yangzhou 225009, China
Funding
Senior Talent Foundation of Jiangsu University · National Natural Science Foundation of China
References (43)
Show source-provided references
1. Detached eddy simulation on the turbulent flow in a stirred tank10.1002/aic.12807 ↗
2. Modeling of gas-liquid mass transfer in a stirred tank bioreactor agitated by a Rushton turbine or a new pitched blade impeller10.1007/s00449-013-1001-8 ↗
3. Influence of impeller diameter on overall gas dispersion properties in a sparged multi-impeller stirred tank10.1016/j.cjche.2014.11.030 ↗
4. Experimental analysis of gas hold-up for gas-liquid system agitated in a vessel equipped with two impellers and vertical tubular baffles10.2478/pjct-2018-0002 ↗
5. Measuring gas hold-up in gas-liquid/gas-solid-liquid stirred tanks with an electrical resistance tomography linear probe10.1002/aic.16586 ↗
6. Adaptive neuro-fuzzy prediction of flow pattern and gas hold-up in bubble column reactors10.1007/s00366-019-00905-y ↗
7. The effect of various designs of six-curved blade impellers on reaction rate analysis in liquid–liquid mixing vessel10.1016/j.measurement.2016.04.044 ↗
8. Modified scaba 6SRGT impellers for process intensification: Cavern size and energy saving when stirring viscoplastic fluids10.1016/j.cep.2019.107795 ↗
9. Effect of the shaft eccentricity and rotational direction on the mixing characteristics in cylindrical tank reactors10.1016/j.cjche.2016.05.011 ↗
10. Newly modified curved-bladed impellers for process intensification: Energy saving in the agitation of Hershel-Bulkley fluids10.1016/j.cep.2020.108009 ↗
11. CFD analysis and design optimization in a curved blade impeller10.1515/ijcre-2016-0119 ↗
12. Power requirements of gas-liquid agitated systems10.1002/aic.690080226 ↗
13. Power requirements and interfacial area in gas-liquid turbine agitated systems10.1021/i260076a023 ↗
14. Stirred-tank mechanical power requirement and gas holdup in aerated aqueous phases10.1002/aic.690230109 ↗
15. Mechanical power requirements of gas-liquid agitated systems10.1002/aic.690250520 ↗
16. Oxygen transfer in mechanically agitated aqueous systems containing dispersed hydrocarbon10.1002/bit.260190505 ↗
17. Asymmetric blade disc turbine for high aeration rates10.5545/sv-jme.2017.5149 ↗
18. Hydrodynamics and mass transfer of gas–liquid flow in micropacked bed reactors with metal foam packing10.1002/aic.16803 ↗
19. Power consumption in gas-liquid contactors agitated by double-stage Rushton turbines10.1002/1521-4125(200202)25:2<163::aid-ceat163>3.0.co;2-g ↗
20. Real and pseudo turbulence in the discharge stream from a Rushton turbine10.1016/0009-2509(76)80024-3 ↗
21. Flooding of disc turbines in gas-liquid dispersions: A new description of the phenomenon10.1016/0009-2509(85)87023-8 ↗
22. Stirring and stirred-tank reactors10.1002/cite.201400087 ↗
23. Gas-filled cavity structures and local void fraction distribution in aerated stirred vessel10.1002/aic.690431105 ↗
24. The effect of scale and geometry on flooding, recirculation and power in stirred vessels
25. Investigation of gas-liquid mass transfer and power consumption characteristics in jet-flow high shear mixers10.1016/j.cej.2021.128580 ↗
26. Gas hold-up distribution and mixing time in gas–liquid stirred tanks10.1016/j.cej.2015.05.058 ↗
27. An impedance probe for the measurements of liquid hold-up and mixing time in two/three-phase stirred tank reactors10.1007/s003480100319 ↗
28. Local bubble size distributions, gas–liquid interfacial areas and gas holdups in a stirred vessel with particle image velocimetry10.1016/j.cej.2005.03.002 ↗
29. Mixing of highly concentrated slurries of large particles: Applications of electrical resistance tomography (ERT) and response surface methodology (RSM)10.1016/j.cherd.2019.01.018 ↗
30. Measuring solid cuttings transport in Newtonian fluid across horizontal annulus using electrical resistance tomography (ERT)10.1016/j.flowmeasinst.2020.101841 ↗
31. Measurement of gas hold-up profiles in stirred tank reactors by gamma ray attenuation technique10.1205/026387601316971352 ↗
32. Gamma ray tomography—An experimental analysis of fractional gas hold-up in bubble columns10.1016/j.cej.2007.05.014 ↗
33. Trailing vortices of Rushton turbine: PIV measurements and CFD simulations with snapshot approach10.1205/026387601528471 ↗
34. Gas–liquid flow generated by a Rushton turbine in stirred vessel: CARPT/CT measurements and CFD simulations10.1016/j.ces.2004.11.044 ↗
35. CFD optimization of continuous stirred-tank (CSTR) reactor for biohydrogen production10.1016/j.biortech.2010.03.146 ↗
36. Characterising the two-phase flow and mixing performance in a gas-mixed anaerobic digester: Importance for scaled-up applications10.1016/j.watres.2018.10.077 ↗
37. Generality of the CFD-PBM coupled model for bubble column simulation10.1016/j.ces.2020.115514 ↗
38. Effect of the blade size on the vortex structure and gas dispersion in gas-liquid stirred vessels with a single Rushton turbine impeller
39. Gas-liquid dispersion with dual Rushton turbine impellers10.1002/bit.260340506 ↗
40. Experimental evaluation of the virtual mass of two solid spheres accelerating in fluids10.1016/j.expthermflusci.2006.08.007 ↗
41. Experimental investigation of the mixing characteristics of non-Newtonian fluids through an ultrasonic Doppler anemometer (UDA)10.1016/j.expthermflusci.2019.109866 ↗
42. Scale process effect on the power consumption characteristics of a novel curved Rushton turbine within a reactor vessel10.1016/j.cherd.2020.11.029 ↗
43. The impact of fluid dynamic stress in stirred bioreactors—The scale of the biological entity: A personal view10.1002/cite.202000176 ↗