Droplet characteristics in the multi-staged high speed disperser with single inlet

doi:10.1016/j.cjche.2018.12.017

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (8): 1756-1764.DOI: 10.1016/j.cjche.2018.12.017

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

Droplet characteristics in the multi-staged high speed disperser with single inlet

Ao Nie¹, Ziqi Cai¹, Zhengming Gao¹, Zhimiao Wang¹, Archie Eaglesham²

1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2 Huntsman Polyurethanes, B3078 Everberg, Belgium

收稿日期:2018-08-24 修回日期:2018-11-03 出版日期:2019-08-28 发布日期:2019-11-16
通讯作者: Ziqi Cai, Zhengming Gao
基金资助:
Supported by "The Design and Optimisation of High Speed Rotating Mixing Nozzles for Liquid-Liquid Applications" PhD Studentship provided by Huntsman Europe (Belgium).

Droplet characteristics in the multi-staged high speed disperser with single inlet

Ao Nie¹, Ziqi Cai¹, Zhengming Gao¹, Zhimiao Wang¹, Archie Eaglesham²

1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2 Huntsman Polyurethanes, B3078 Everberg, Belgium

Received:2018-08-24 Revised:2018-11-03 Online:2019-08-28 Published:2019-11-16
Contact: Ziqi Cai, Zhengming Gao
Supported by:
Supported by "The Design and Optimisation of High Speed Rotating Mixing Nozzles for Liquid-Liquid Applications" PhD Studentship provided by Huntsman Europe (Belgium).

摘要/Abstract

摘要： Droplet characteristics in the cavity zone of a multi-staged high speed disperser with single inlet were studied in this paper. The influences of both the operating and structural parameters on the mean droplet diameter, size distribution and liquid flux distribution were quantitatively analyzed. The result showed that the mean droplet diameter decreased with the increase of rotational speed and the number of rotors; whilst there is little influence on the inlet flow rate. In the experimental range, the minimum value of mean droplet diameter is 0.57 mm, 0.48 mm, 0.41 mm in the two-staged, three-staged and four-staged rotors, respectively. The Rosin-Rammler (R-R) distribution could describe the droplet size distribution appropriately, and it became uniform with the increase of rotational speed and the number of rotor, while the inlet flow rate had little effect on the droplet size distribution. The liquid flux distribution curves were always unimodal. With the increase of rotational speed, the location of maximum liquid flux ratio moved from zone 3 to zone 4 and this value decreased from 22.1% to 18.1%. Using Coefficient of Variation (CV) to indicate the uniformity of liquid flux distribution, it was found that the CV decreases from 47.5% to 22.7% when the number of rotor increased from 2 to 4.

关键词: Droplet, High speed disperser, Size distribution, Liquid flux distribution

Abstract: Droplet characteristics in the cavity zone of a multi-staged high speed disperser with single inlet were studied in this paper. The influences of both the operating and structural parameters on the mean droplet diameter, size distribution and liquid flux distribution were quantitatively analyzed. The result showed that the mean droplet diameter decreased with the increase of rotational speed and the number of rotors; whilst there is little influence on the inlet flow rate. In the experimental range, the minimum value of mean droplet diameter is 0.57 mm, 0.48 mm, 0.41 mm in the two-staged, three-staged and four-staged rotors, respectively. The Rosin-Rammler (R-R) distribution could describe the droplet size distribution appropriately, and it became uniform with the increase of rotational speed and the number of rotor, while the inlet flow rate had little effect on the droplet size distribution. The liquid flux distribution curves were always unimodal. With the increase of rotational speed, the location of maximum liquid flux ratio moved from zone 3 to zone 4 and this value decreased from 22.1% to 18.1%. Using Coefficient of Variation (CV) to indicate the uniformity of liquid flux distribution, it was found that the CV decreases from 47.5% to 22.7% when the number of rotor increased from 2 to 4.

Key words: Droplet, High speed disperser, Size distribution, Liquid flux distribution

Ao Nie, Ziqi Cai, Zhengming Gao, Zhimiao Wang, Archie Eaglesham. Droplet characteristics in the multi-staged high speed disperser with single inlet[J]. 中国化学工程学报, 2019, 27(8): 1756-1764.

Ao Nie, Ziqi Cai, Zhengming Gao, Zhimiao Wang, Archie Eaglesham. Droplet characteristics in the multi-staged high speed disperser with single inlet[J]. Chinese Journal of Chemical Engineering, 2019, 27(8): 1756-1764.

参考文献

[1] J.-P. Zhang, Y. Luo, G.-W. Chu, L. Sang, Y. Liu, L.-L. Zhang, J.-F. Chen, A hydrophobic wire mesh for better liquid dispersion in air, Chem. Eng. Sci. 170(2017) 204-212.
[2] J.-F. Chen, G.-Z. Chen, J.-X. Wang, L. Shao, P.-F. Li, High-throughput microporous tube-in-tube microreactor as novel gas-liquid contactor:Mass transfer study, AIChE J. 57(2011) 239-249.
[3] Y. Su, G. Chen, Q. Yuan, Ideal micromixing performance in packed microchannels, Chem. Eng. Sci. 66(2011) 2912-2919.
[4] P. Eisenklam, On ligament formation from spinning discs and cups, Chem. Eng. Sci. 19(1964) 693-694.
[5] J. Liu, Q. Yu, P. Li, W. Du, Cold experiments on ligament formation for blast furnace slag granulation, Appl. Therm. Eng. 40(2012) 351-357.
[6] B. Bizjan, B. Širok, M. Hočevar, A. Orbanić, Liquid ligament formation dynamics on a spinning wheel, Chem. Eng. Sci. 119(2014) 187-198.
[7] B. Sirok, B. Blagojevic, P. Bullen, Mineral Wool:Production and Properties, Elsevier, 2008.
[8] B. Bizjan, B. Širok, M. Hočevar, A. Orbanić, Ligament-type liquid disintegration by a spinning wheel, Chem. Eng. Sci. 116(2014) 172-182.
[9] T. Kamiya, A. Kayano, Film-type disintegration by rotating disk, J. Chem. Eng. Jpn. 5(1972) 174-182.
[10] J. Liu, Q. Yu, Q. Guo, Experimental investigation of liquid disintegration by rotary cups, Chem. Eng. Sci. 73(2012) 44-50.
[11] H. Peng, N. Wang, D. Wang, X. Ling, Experimental study on the critical characteristics of liquid atomization by a spinning disk, Ind. Eng. Chem. Res. 55(2016) 6175-6185.
[12] D. Wang, X. Ling, H. Peng, Z. Cui, X. Yang, Experimental investigation of ligament formation dynamics of thin viscous liquid film at spinning disk edge, Ind. Eng. Chem. Res. 55(2016) 9267-9275.
[13] Ramshaw, C., Mallinson, R.H., Mass transfer process, USA Pat., 4283255A, 1981.
[14] H.-S. Liu, C.-C. Lin, S.-C. Wu, H.-W. Hsu, Characteristics of a rotating packed bed, Ind. Eng. Chem. Res. 35(1996) 3590-3596.
[15] J. Burns, C. Ramshaw, Process intensification:Visual study of liquid maldistribution in rotating packed beds, Chem. Eng. Sci. 51(1996) 1347-1352.
[16] K. Guo, A Study on Liquid Flowing Inside the Higee Rotor, PhD Thesis, Beijing University of Chemical Engineering, Beijing, 1996(in Chinese).
[17] L. Sang, Y. Luo, G.-W. Chu, J.-P. Zhang, Y. Xiang, J.-F. Chen, Liquid flow pattern transition, droplet diameter and size distribution in the cavity zone of a rotating packed bed:A visual study, Chem. Eng. Sci. 158(2017) 429-438.
[18] K. Guo, Z. Zhang, H. Luo, J. Dang, Z. Qian, An innovative approach of the effective mass transfer area in the rotating packed bed, Ind. Eng. Chem. Res. 53(2014) 4052-4058.
[19] Y. Luo, G.-W. Chu, H.-K. Zou, Z.-Q. Zhao, M.P. Dudukovic, J.-F. Chen, Gas-liquid effective interfacial area in a rotating packed bed, Ind. Eng. Chem. Res. 51(2012) 16320-16325.
[20] G.-W. Chu, Y.-H. Song, H.-J. Yang, J.-M. Chen, H. Chen, J.-F. Chen, Micromixing efficiency of a novel rotor-stator reactor, Chem. Eng. J. 128(2007) 191-196.
[21] Y. Yang, Y. Xiang, G. Chu, H. Zou, Y. Luo, M. Arowo, J.-F. Chen, A noninvasive Xray technique for determination of liquid holdup in a rotating packed bed, Chem. Eng. Sci. 138(2015) 244-255.
[22] Z.-y. Yan, C. Lin, Q. Ruan, Hydrodynamics in a rotating packed bed. I. A novel experimental method, Ind. Eng. Chem. Res. 51(2012) 10472-10481.
[23] Z.-y. Yan, C. Lin, Q. Ruan, Dynamics of droplets and mass transfer in a rotating packed bed, AIChE J. 60(2014) 2705-2723.
[24] A. Nie, Z. Gao, L. Xue, Z. Cai, G.M. Evans, A. Eaglesham, Micromixing performance and the modeling of a confined impinging jet reactor/high speed disperser, Chem. Eng. Sci. 184(2018) 14-24.
[25] J. Zhang, S. Cai, Y. Li, H. Zhu, Y. Zhang, Visualization study of gas-liquid twophase flow patterns inside a three-stage rotodynamic multiphase pump, Exp. Thermal Fluid Sci. 70(2016) 125-138.
[26] M. Meeuwse, J. van der Schaaf, B.F.M. Kuster, J.C. Schouten, Gas-liquid mass transfer in a rotor-stator spinning disc reactor, Chem. Eng. Sci. 65(2010) 466-471.
[27] G.V. Kuznetsov, P.A. Strizhak, R.S. Volkov, O.V. Vysokomornaya, Integral characteristics of water droplet evaporation in high-temperature combustion products of typical flammable liquids using SP and IPI methods, Int. J. Therm. Sci. 108(2016) 218-234.
[28] J. Feng, X. Li, Y. Bao, Z. Cai, Z. Gao, Coalescence and conjunction of two in-line bubbles at low Reynolds numbers, Chem. Eng. Sci. 141(2016) 261-270.
[29] Z. Gao, S. Ma, D. Shi, J. Wang, Y. Bao, Z. Cai, Droplet characteristics and behaviors in a high-speed disperser, Chem. Eng. Sci. 126(2015) 329-340.
[30] Y. Li, S. Wang, B. Sun, M. Arowo, H. Zou, J. Chen, L. Shao, Visual study of liquid flow in a rotor-stator reactor, Chem. Eng. Sci. 134(2015) 521-530.
[31] P. Rosin, The laws governing the fineness of powdered coal, J. Inst. Fuel 7(1933) 29-36.

Droplet characteristics in the multi-staged high speed disperser with single inlet

Droplet characteristics in the multi-staged high speed disperser with single inlet

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]	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.
[2]	Yilin Song, Yize Zhang, Hao Zhou. Experimental study on the desulfurization and evaporation characteristics of Ca(OH)₂ droplets[J]. 中国化学工程学报, 2023, 54(2): 127-135.
[3]	Jihui Li, Bingjian Zhang, Yidan Shu. Simulation of gas-solid adsorption process considering particle-size distribution[J]. 中国化学工程学报, 2023, 54(2): 331-342.
[4]	Jing Xie, Xiangbi Jia, Dan Wang, Yingjiao Li, Bao-chang Sun, Yong Luo, Guang-wen Chu, Jian-feng Chen. Controllable and high-throughput preparation of microdroplet using an ultra-high speed rotating packed bed[J]. 中国化学工程学报, 2022, 48(8): 116-124.
[5]	Shidong Xue, Jingkun Han, Xi Xi, Junyi Zhao, Zhong Lan, Rongfu Wen, Xuehu Ma. Rapid velocity reduction and drift potential assessment of off-nozzle pesticide droplets[J]. 中国化学工程学报, 2022, 46(6): 243-254.
[6]	Shenglin Yan, Yan Zhang, Chong Peng, Xiaoyong Yang, Yuan Huang, Zhishan Bai, Xiao Xu. Oil droplet movement and micro-flow characteristics during interaction process between gas bubble and oil droplet in flotation[J]. 中国化学工程学报, 2022, 45(5): 229-237.
[7]	Teng Wang, Zihong Xia, Caixia Chen. Computational study of bubble coalescence/break-up behaviors and bubble size distribution in a 3-D pressurized bubbling gas-solid fluidized bed of Geldart A particles[J]. 中国化学工程学报, 2022, 44(4): 485-496.
[8]	Guina Yi, Ziqi Cai, Zhengming Gao, J.J. Derksen. Impingement and mixing dynamics of micro-droplets on a solid surface[J]. 中国化学工程学报, 2022, 52(12): 66-77.
[9]	Lingzhen Kong, Jiaqing Chen, Tian Lan, Huan Sun, Kuisheng Wang. Spray and mixing characteristics of liquid jet in a tubular gas-liquid atomization mixer[J]. 中国化学工程学报, 2021, 34(6): 1-11.
[10]	Yanni Chi, Rui Zhang, Xianghai Meng, Jian Xu, Wei Du, Haiyan Liu, Zhichang Liu. Numerical simulation of two-phase flow and droplet breakage of glycerin-water mixture and kerosene in the cyclone reactor[J]. 中国化学工程学报, 2021, 34(6): 150-159.
[11]	Xianchao Liang, Limin He, Xiaoming Luo, Qingping Li, Yuanpeng You, Yiqiu Xu. Experimental study on sand particles accumulation, migration and separation efficiency in slug catcher[J]. 中国化学工程学报, 2021, 32(4): 134-143.
[12]	Shuaifeng Zhang, Qinghua Zhang, Jianzhuang Shang, Zaisha Mao, Chao Yang. Measurement methods of particle size distribution in emulsion polymerization[J]. 中国化学工程学报, 2021, 39(11): 1-15.
[13]	Zhuo Chen, Qiqiang Xiong, Shaowei Li, Yundong Wang, Jianhong Xu. Experimental investigation of dynamic mass transfer during droplet formation using micro-LIF in a coaxial microchannel[J]. 中国化学工程学报, 2021, 39(11): 51-58.
[14]	Ziqing Yuan, Ziyu Chen, Jianxin Mao, Renxian Zhou. The size effect and high activity of nanosized platinum supported catalysts for low temperature oxidation of volatile organic compounds[J]. 中国化学工程学报, 2021, 39(11): 135-143.
[15]	Weixi Guo, Chunying Zhu, Taotao Fu, Youguang Ma. Coalescence dynamics of two droplets of different viscosities in T-junction microchannel with a funnel-typed expansion chamber[J]. 中国化学工程学报, 2021, 38(10): 43-52.