Experimental study on gas-liquid dispersion and mass transfer in shear-thinning system with coaxial mixer

doi:10.1016/j.cjche.2018.02.009

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (9): 1785-1791.DOI: 10.1016/j.cjche.2018.02.009

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Experimental study on gas-liquid dispersion and mass transfer in shear-thinning system with coaxial mixer

Baoqing Liu, Yijun Zheng, Ruijia Cheng, Zilong Xu, Manman Wang, Zhijiang Jin

Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, China

收稿日期:2017-09-13 修回日期:2017-12-29 出版日期:2018-09-28 发布日期:2018-10-17
通讯作者: Zhijiang Jin,E-mail address:zhijiangjin@126.com
基金资助:
Supported by the Zhejiang Provincial Natural Science Foundation of China (LY16B060003); and the National Natural Science Foundation of China (21776246).

Experimental study on gas-liquid dispersion and mass transfer in shear-thinning system with coaxial mixer

Baoqing Liu, Yijun Zheng, Ruijia Cheng, Zilong Xu, Manman Wang, Zhijiang Jin

Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, China

Received:2017-09-13 Revised:2017-12-29 Online:2018-09-28 Published:2018-10-17
Contact: Zhijiang Jin,E-mail address:zhijiangjin@126.com
Supported by:
Supported by the Zhejiang Provincial Natural Science Foundation of China (LY16B060003); and the National Natural Science Foundation of China (21776246).

摘要/Abstract

摘要： The effects of impeller type, stirring power, gas flow rate, and liquid concentration on the gas-liquid mixing in a shear-thinning system with a coaxial mixer were investigated by experiment, and the overall gas holdup, relative power demand, and volumetric mass transfer coefficient under different conditions were compared. The results show that, the increasing stirring power or gas flow rate is beneficial in promoting the overall gas holdup and volumetric mass transfer coefficient, while the increasing system viscosity weakens the mass transfer in a shearing-thinning system. Among the three turbines, the six curved-blade disc turbine (BDT-6) exhibits the best gas pumping capacity; the six 45° pitched-blade disc turbine (PBDT-6) has the highest volumetric mass transfer coefficient at the same unit volume power.

关键词: Non-Newtonian fluids, Coaxial mixer, Gas holdup, Relative power demand, Mass transfer

Abstract: The effects of impeller type, stirring power, gas flow rate, and liquid concentration on the gas-liquid mixing in a shear-thinning system with a coaxial mixer were investigated by experiment, and the overall gas holdup, relative power demand, and volumetric mass transfer coefficient under different conditions were compared. The results show that, the increasing stirring power or gas flow rate is beneficial in promoting the overall gas holdup and volumetric mass transfer coefficient, while the increasing system viscosity weakens the mass transfer in a shearing-thinning system. Among the three turbines, the six curved-blade disc turbine (BDT-6) exhibits the best gas pumping capacity; the six 45° pitched-blade disc turbine (PBDT-6) has the highest volumetric mass transfer coefficient at the same unit volume power.

Key words: Non-Newtonian fluids, Coaxial mixer, Gas holdup, Relative power demand, Mass transfer

Baoqing Liu, Yijun Zheng, Ruijia Cheng, Zilong Xu, Manman Wang, Zhijiang Jin. Experimental study on gas-liquid dispersion and mass transfer in shear-thinning system with coaxial mixer[J]. Chinese Journal of Chemical Engineering, 2018, 26(9): 1785-1791.

参考文献

[1] V.B. Rewatkar, A.J. Deshpande, A.B. Pandit, J.B. Joshi, Gas hold-up behavior of mechanically agitated gas-liquid reactors using pitched blade downflow turbines, Can. J. Chem. Eng. 71(1993)226-237.

[2] G.J. Xu, Y.M. Li, Z.Z. Hou, L.F. Feng, K. Wang, Gas-liquid dispersion and mixing characteristics and heat transfer in a stirred vessel, Can. J. Chem. Eng. 75(1997)299-306.

[3] J.M. Smith, Z. Gao, H. Muller-Steinhagen, The effect of temperature on the void fraction in gas-liquid reactors, Exp. Thermal Fluid Sci. 28(2004) 473-478.

[4] J.C. Gabelle, E. Jourdier, R.B. Licht, F.B. Chaabane, I. Henaut, J. Morchain, F. Augier, Impact of rheology on the mass transfer coefficient during the growth phase of Trichoderma reesei in stirred bioreactors, Chem. Eng. Sci. 75(2012) 408-417.

[5] J.J. Wang, L.C. Li, X.P. Gu, L.F. Feng, Progress on CFD simulation of gas-liquid two-phase flow in stirred tank reactor, Process Equip. Piping 49(2012) 1-4(in Chinese).

[6] F. Yang, S. Zhou, X. An, Gas-liquid hydrodynamics in a vessel stirred by dual dislocated-blade Rushton impellers, Chin. J. Chem. Eng. 23(2015) 1746-1754.

[7] J.J. Zhang, Z.M. Gao, L.Q. Yin, Y.Y. Bao, Gas dispersion and mass transfer in a hotsparged multi-impeller stirred tank, J. Beijing Univ. Chem. Technol. Nat. Sci. 42(2015) 15-20(in Chinese).

[8] J.M.T. Vasconcelos, S.C.P. Orvalho, A.M.A.F. Rodrigues, S.S. Alves, Effect of blade shape on the performance of six-blade disk turbine impellers, Ind. Eng. Chem. Res. 39(2000)203-213.

[9] Q.H. Zhang, Y.M. Yong, Z.S. Mao, Y. Chao, C.J. Zhao, Experimental determination and numerical simulation of mixing time in a gas-liquid stirred tank, Chem. Eng. Sci. 64(2009)2926-2933.

[10] N. Gao, Local void fraction and bubble size distribution in a gas liquid multi-impeller stirred tank, Master Thesis, Beijing University of Chemical Technology, China, 2010.

[11] M. Taghavi, R. Zadghaffari, J. Moghaddas, Y. Moghaddas, Experimental and CFD investigation of power consumption in a dual Rushton turbine stirred tank, Chem. Eng. Res. Des. 89(2011)280-290.

[12] K.E. Morud, B.H. Hjertager, LDA measurements and CFD modelling of gas-liquid flow in a stirred vessel, Chem. Eng. Sci. 51(1996)233-249.

[13] W. Wang, Z.S. Mao, C. Yang, Experimental and numerical investigation on gas holdup and flooding in an areared stirred tank with Rushton impeller, Ind. Eng. Chem. Res. 45(2006) 1141-1151.

[14] X.N. Zhang, Y.Y. Bao, Z.M. Gao, Effect of temperature on gas-liquid dispersion in multi-impeller three-phase reactor, Sciencepaper Online 3(2008) 184-188(in Chinese).

[15] Y.Y. Bao, J. Yang, B.J. Wang, Z.M. Gao, Influence of impeller diameter on local gas dispersion properties in a sparged multi-impeller stirred tank, Chin. J. Chem. Eng. 23(2015) 615-622.

[16] M. Ramezani, B. Kong, X. Gao, M.G. Olsen, R.D. Vigil, Experimental measurement of oxygen mass transfer and bubble size distribution in an air-water multiphase Taylor-Couette vortex bioreactor, Chem. Eng. J. 279(2015)286-296.

[17] J.C. Gabelle, J. Morchain, D. Anne-Archard, F. Augier, A. Line, Experimental determination of the shear rate in a stirred tank with a non-Newtonian fluid:Carbopol, AICHE J. 59(2013)2251-2266.

[18] M. Gavrilescu, R.V. Roman, Oxygen mass transfer and gas holdup in a bubble column bioreactor with biosynthesis liquid, Acta Biotechnol. 14(1994)27-36.

[19] J.C. Gabelle, F. Augier, A. Carvalho, R. Rousset, J. Morchain, Effect of tank size on kLa and mixing time in aerated stirred reactors with non-Newtonian fluids, Can. J. Chem. Eng. 89(2011) 1139-1153.

[20] Z. Zhou, Characteristics of gas liquid flows in stirred tank bioreactor, Master Thesis, East China University of Science and Technology, China, 2014.

[21] B. Liu, B. Huang, Y. Zhang, J. Liu, Z. Jin, Numerical study on gas dispersion characteristics of a coaxial mixer with viscous fluids, J. Taiwan Inst. Chem. Eng. 66(2016) 54-61.

[22] B. Liu, F. Fan, X. Chen, J. Liu, Z. Jin, The influence of impeller combination on the gas-liquid dispersion performance of a coaxial mixer in viscous fluids, Int. J. Chem. React. Eng. (2017)https://doi.org/10.1515/ijcre-2016-0191.

[23] N. Hashemi, F. Ein-Mozaffari, S.R. Upreti, D.K. Hwang, Analysis of mixing in an aerated reactor equipped with the coaxial mixer through electrical resistance tomography and response surface method, Chem. Eng. Res. Des. 109(2016) 734-752.

[24] N. Hashemi, F. Ein-Mozaffari, S.R. Upreti, D.K. Hwang, Analysis of power consumption and gas holdup distribution for an aerated reactor equipped with a coaxial mixer:Novel correlations for the gas flow number and gassed power, Chem. Eng. Sci. 151(2016)25-35.

[25] N. Hashemi, F. Ein-Mozaffari, S.R. Upreti, D.K. Hwang, Experimental investigation of the bubble behavior in an aerated coaxial mixing vessel through electrical resistance tomography (ERT), Chem. Eng. J. 289(2016) 402-412.

[26] T. Espinosa-Solares, L.F.E. Brito-De, A. Tecante, P.A. Tanguy, Flow patterns in rheologically evolving model fluids produced by hybrid dual mixing systems, Chem. Eng. Technol. 24(2001) 913-918.

[27] T. Espinosa-Solares, L.F.E. Brito-De, A. Tecante, P.A. Tanguy, Gas dispersion in rheologically-evolving model fluids by hybrid dual mixing systems, Chem. Eng. Technol. 25(2002) 723-727.

[28] B. Liu, Y. Zheng, H. Liang, M. Wang, Z. Jin, CFD simulation on shear-thinning gas-liquid dispersion in coaxial mixer, CIESC J. 68(2017)2280-2289.

[29] S.J. Arjunwadkar, K. Sarvanan, P.R. Kulkarni, A.B. Pandit, Gas-liquid mass transfer in dual impeller bioreactor, Biochem. Eng. J. 1(1998) 99-106.

[30] F. Garcia-Ochoa, E. Gomez, Bioreactor scale-up and oxygen transfer rate in microbial processes:An overview, Biotechnol. Adv. 27(2009) 153-176.

[31] M.L. Jackson, C.-C. Shen, Aeration and mixing in deep tank fermentation systems, AICHE J. 24(1978) 63-71.

[32] P. Moilanen, M. Laakkonen, O. Visuri, V. Alopaeus, J. Aittamaa, Modelling mass transfer in an aerated 0.2 m³ vessel agitated by Rushton, Phasejet and Combijet impellers, Chem. Eng. J. 142(2008) 95-108.

[33] M.M. Wang, Research on gas dispersion, mass-transfer, mixing characteristics of coaxial mixers in shear-thinning fluids, Master Thesis, Zhejiang University, China, 2016.

[34] M.S. Puthli, V.K. Rathod, A.B. Pandit, Gas-liquid mass transfer studies with triple impeller system on a laboratory scale bioreactor, Biochem. Eng. J. 23(2005)25-30.

[35] M.O. Albaek, K.V. Gernaey, S.M. Stocks, Gassed and ungassed power draw in a pilot scale 550 litre fermentor retrofitted with up-pumping hydrofoil B2 impellers in media of different viscosity and with very high power draw, Chem. Eng. Sci. 63(2008) 5813-5820.

[36] D.Y. Luan, S.J. Zhou, S.Y. Chen, S.P. Chu, CFD simulation of the flow field and cavern formation of pseudoplastic fluid with a 6-bent-blade impeller, Chin. J. Process. Eng. 10(2010) 1054-1059(in Chinese).

Experimental study on gas-liquid dispersion and mass transfer in shear-thinning system with coaxial mixer

Experimental study on gas-liquid dispersion and mass transfer in shear-thinning system with coaxial mixer

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	Bo Yu, Guang Fu, Xinpei Li, Libo Zhang, Jing Li, Hongtao Qu, Dongbin Wang, Qingfeng Dong, Mengmeng Zhang. Arsenic removal from acidic industrial wastewater by ultrasonic activated phosphorus pentasulfide[J]. 中国化学工程学报, 2023, 60(8): 46-52.
[2]	Anjun Liu, Jie Chen, Meng Guo, Chengmin Chen, Meihong Yang, Chao Yang. The internal circulations on internal mass transfer rate of a single drop in nonlinear uniaxial extensional flow[J]. 中国化学工程学报, 2023, 59(7): 51-60.
[3]	Ming Chen, Huiyan Jiao, Jun Li, Zhibin Wang, Feng He, Yang Jin. Liquid–liquid two-phase flow in a wire-embedded concentric microchannel: Flow pattern and mass transfer performance[J]. 中国化学工程学报, 2023, 56(4): 281-289.
[4]	Wen Tian, Junyi Ji, Hongjiao Li, Changjun Liu, Lei Song, Kui Ma, Siyang Tang, Shan Zhong, Hairong Yue, Bin Liang. Measurements of the effective mass transfer areas for the gas–liquid rotating packed bed[J]. 中国化学工程学报, 2023, 55(3): 13-19.
[5]	Qi Han, Xin-Yuan Zhang, Hai-Bo Wu, Xian-Tai Zhou, Hong-Bing Ji. Different efficiency toward the biomimetic aerobic oxidation of benzyl alcohol in microchannel and bubble column reactors: Hydrodynamic characteristics and gas–liquid mass transfer[J]. 中国化学工程学报, 2023, 55(3): 84-92.
[6]	Qinyan Wang, Yang Jin, Jun Li, Yongbo Zhou, Ming Chen. Study on liquid–liquid two-phase mass transfer characteristics in the microchannel with deformed insert[J]. 中国化学工程学报, 2023, 54(2): 114-126.
[7]	Zhiwei Wang, Yu Zhang, Zhi Zhang, Daowei Zhou, Zhikai Cao, Yong Sha. Investigation on catalytic distillation for ethyl acetate production with different catalytic packing structures[J]. 中国化学工程学报, 2023, 53(1): 63-72.
[8]	Ting He, Songhong Yu, Jinhui He, Dejian Chen, Jie Li, Hongjun Hu, Xingrui Zhong, Yawei Wang, Zhaohui Wang, Zhaoliang Cui. Membranes for extracorporeal membrane oxygenator (ECMO): History, preparation, modification and mass transfer[J]. 中国化学工程学报, 2022, 49(9): 46-75.
[9]	Zhi-Guo Yuan, Yu-Xia Wang, You-Zhi Liu, Dan Wang, Wei-Zhou Jiao, Peng-Fei Liang. Research and development of advanced structured packing in a rotating packed bed[J]. 中国化学工程学报, 2022, 49(9): 178-186.
[10]	Xing Su, Ning Qiao, Bao-Chang Sun. A route for the study on mass transfer enhancement by adding particles in liquid phase[J]. 中国化学工程学报, 2022, 48(8): 158-165.
[11]	Weizhou Jiao, Xingyue Wei, Shengjuan Shao, Youzhi Liu. Catalytic decomposition and mass transfer of aqueous ozone promoted by Fe-Mn-Cu/γ-Al₂O₃ in a rotating packed bed[J]. 中国化学工程学报, 2022, 45(5): 133-142.
[12]	Yingjie Zhou, Wenhui Zhang, Shengwei Yu, Haibo Jiang, Chunzhong Li. Patterned catalyst layer boosts the performance of proton exchange membrane fuel cells by optimizing water management[J]. 中国化学工程学报, 2022, 44(4): 246-252.
[13]	Zhijie Shen, Jingchun Min. Non-equilibrium thermodynamic analysis of coupled heat and moisture transfer across a membrane[J]. 中国化学工程学报, 2022, 44(4): 497-506.
[14]	Yihan Yin, Aoqian Qiu, Hongxia Gao, Yanqing Na, Zhiwu Liang. Experimental study of the mass transfer behavior of carbon dioxide absorption into ternary phase change solution in a packed tower[J]. 中国化学工程学报, 2022, 43(3): 135-142.
[15]	Xuanyu Nie, Chunying Zhu, Taotao Fu, Youguang Ma. Mass transfer intensification and mechanism analysis of gas–liquid two-phase flow in the microchannel embedding triangular obstacles[J]. 中国化学工程学报, 2022, 51(11): 100-108.