Multi-objective Optimization of Combined Internal Components with a Vortex Stabilizer and Apex Cone for Performance Improvement of Cyclone Separator

Zhang, Z.; Qin, H. R.; Zhao, Y. J.; Li, J.; Pan, H. J.; Hu, C. H.; Liu, L.

doi:10.47176/jafm.18.8.3318

Multi-objective Optimization of Combined Internal Components with a Vortex Stabilizer and Apex Cone for Performance Improvement of Cyclone Separator

Document Type : Regular Article

Authors

¹ School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China

² Jiangsu Key Laboratory of Green Process Equipment, Changzhou University, Changzhou, 213164, China

³ Changzhou University, CNPC-CZU Innovation Alliance, 213164, China

10.47176/jafm.18.8.3318

Abstract

Multi-objective optimization of a cyclone with combined internal components, including a vortex stabilizer and apex cone, was studied for performance improvement. Response Surface Methodology (RSM) and Computational Particle Fluid Dynamics (CPFD) were employed to investigate the effects of four parameters: vortex stabilizer diameter D_H, apex cone bottom length D_S, position B_S, and height B_H on separation efficiency, pressure drop, and quality factor. The desirability function was used to determine the optimized structure. The results demonstrated that D_S primarily affected separation efficiency and quality factor, whereas D_H mainly influenced pressure drop. The reduction in these two parameters, as well as the decrease in B_S, contributed to performance enhancement relative to their original values. After optimizing, separation efficiency, pressure drop, and quality factor could be improved by 5.605 %, 0.910 % and 16.673 %, respectively, and D_H, D_S, B_S and B_H were recommended at 27.512, 115.354, −80.1099 and 109.317 mm, respectively. In contrast to the original cyclone, the optimized separator exhibited a more stable flow due to the lower vortex end and minor wall turbulent viscosity. Although static pressure increased, particle back-mixing was alleviated. Additionally, the extended particle flow descending distances and the enlarged effective passage area enhanced particle centrifugal force and decreased particle volume fraction, respectively, thereby improving separation efficiency. Finally, the optimized separator exhibited enhanced overall performance across various operating parameters.

Keywords

Main Subjects

Computational Fluid Dynamics

References

Altıok, E., Kaya, T. Z., Othman, N. H., Kınalı, O., Kitada, S., Güler, E., & Kabay, N. (2022). Investigations on the effects of operational parameters in reverse electrodialysis system for salinity gradient power generation using central composite design (CCD). Desalination, 525, 115508. https://doi.org/10.1016/j.desal.2021.115508

Babaee, S. A., Hosseini, M. S., & Hajizadeh, Y. (2024). Destruction of n-hexane from the air stream by pulsed discharge plasma: Modelling and key process parameters optimization by CCD-RSM. Journal of Environmental Chemical Engineering, 12(3), 112922. https://doi.org/10.1016/j.jece.2024.112922

Bandara, J. C., Jayarathna, C., Thapa, R., Nielsen, H. K., Moldestad, B. M. E., & Eikeland, M. S. (2020). Loop seals in circulating fluidized beds – Review and parametric studies using CPFD simulation. Chemical Engineering Science, 227, 115917. https://doi.org/10.1016/j.ces.2020.115917

Bandara, J. C., Thapa, R., Nielsen, H. K., Moldestad, B. M. E., & Eikeland, M. S. (2019). Circulating fluidized bed reactors - part 01: analyzing the effect of particle modelling parameters in computational particle fluid dynamic (CPFD) simulation with experimental validation. Particulate Science and Technology, 39(2), 223-236. https://doi.org/10.1080/02726351.2019.1697773

Bumrungthaichaichan, E. (2023). A note of caution on numerical scheme selection: Evidence from cyclone separator CFD simulations with appropriate near-wall grid sizes. Powder Technology, 427, 118713. https://doi.org/10.1016/j.powtec.2023.118713

Dehdarinejad, E., & Bayareh, M. (2023). Performance analysis of a novel cyclone separator using RBFNN and MOPSO algorithms. Powder Technology, 426, 118663. https://doi.org/10.1016/j.powtec.2023.118663

Duan, J., Gao, S., Hou, C., Wang, W., Zhang, P., & Li, C. (2020). Effect of cylinder vortex stabilizer on separator performance of the Stairmand cyclone. Powder Technology, 372, 305–316. https://doi.org/10.1016/j.powtec.2020.06.031

Elsayed, K., Parvaz, F., Hosseini, S. H., & Ahmadi, G. (2020). Influence of the dipleg and dustbin dimensions on performance of gas cyclones: An optimization study. Separation and Purification Technology, 239, 116553. https://doi.org/10.1016/j.seppur.2020.116553

Feng, Y., Yuan, Z., Zhu, S., Zhang, M., & Yang, H. (2025). Numerical simulation of cold bubbling fluidized bed in thermochemical heat storage of carbide slag based on CPFD method. Journal of Energy Storage, 108, 115063. https://doi.org/10.1016/j.est.2024.115063

Guo, M., Le, D. K., Sun, X., & Yoon, J. Y. (2022). Multi-objective optimization of a novel vortex finder for performance improvement of cyclone separator. Powder Technology, 410, 117856. https://doi.org/10.1016/j.powtec.2022.117856

Guo, M., Lu, Y., Xue, C., Sun, X., & Yoon, J. Y. (2023). The impact of cylinder vortex stabilizer on fluctuating turbulence characteristics of a cyclone separator based on large eddy simulation. Advanced Powder Technology, 34(9), 104149. https://doi.org/10.1016/j.apt.2023.104149

He, X., Liu, Q., Zhang, H., Kui, M., Tan, X., & Li, X. (2019). Numerical investigation of the performance of moisture separators based on two-way coupling model by Lagrangian-Eulerian methodology. Annals of Nuclear Energy, 124, 407-417. https://doi.org/10.1016/j.anucene.2018.10.020

Jiang, S., Wang, X., Zhang, S., Wu, Q., Hou, L., & Qiao, X. (2024). Design and validation of a sampling module for a cyclonic wet-wall bioaerosol sampler using a computational fluid dynamics model. Powder Technology, 440, 119793. https://doi.org/10.1016/j.powtec.2024.119793

Khalili, A. A. P., Vaziri, N. N. J., Kheradmand, S., & Khalili, A. A. D. (2023). A dimensional optimization study on cyclone performance under the oscillating boundary condition. Chemical Engineering and Processing - Process Intensification, 183, 109217. https://doi.org/10.1016/j.cep.2022.109217

Kosaki, Y., Hirai, T., Yamanaka, Y., & Takeshima, K. (2015). Investigation on dust collection and particle classification performance of cyclones by airflow control for design of cyclones. Powder Technology, 277, 22–35. https://doi.org/10.1016/j.powtec.2015.02.051

Kumar, V., & Jha, K. (2019). Multi-objective shape optimization of vortex finders in cyclone separators using response surface methodology and genetic algorithms. Separation and Purification Technology, 215, 25–31. https://doi.org/10.1016/j.seppur.2018.12.083

Li, J., Wang, T., Zhang, L., Chang, J., Song, Z., & Ma, C. (2020a). Multi-objective optimization of axial-flow-type gas-particle cyclone separator using response surface methodology and computational fluid dynamics. Atmospheric Pollution Research, 11(9), 1487–1499. https://doi.org/10.1016/j.apr.2020.06.002

Li, Q., Wang, J., Xu, W., & Zhang, M. (2020b). Investigation on separation performance and structural optimization of a two-stage series cyclone using CPFD and RSM. Advanced Powder Technology, 31(9), 3706-3714. https://doi.org/10.1016/j.apt.2020.07.006

Li, T., Sun, Z., Geng, K., Sun, M., & Wang, Z. (2023a). Numerical analysis of a novel cascading gas–liquid cyclone separator. Chemical Engineering Science, 270, 118518. https://doi.org/10.1016/j.ces.2023.118518

Li, W., Huang, Z., & Li, G. (2023b). Improvement of the cyclone separator performance by the wedge-shaped roof: A multi-objective optimization study. Chemical Engineering Science, 268, 118404. https://doi.org/10.1016/j.ces.2022.118404

Liang, H., Ma, J., Li, C., Mu, L., & Jiang, X. (2023). Study on the performance of downhole axial cyclone with spiral fins for drainage and sand removal. Journal of Environmental Chemical Engineering, 11(5), 111032. https://doi.org/10.1016/j.jece.2023.111032

Liu, X., Zhang, H., Yang, H., Zhang, Y., & Lyu, J. (2023). Validation and evaluation of the CPFD modeling of dense particle flow velocity: Taking particle flow around an obstacle as an example. Chemical Engineering Journal, 453, 139719. https://doi.org/10.1016/j.cej.2022.139719

Ma, Q., Lei, F., Xu, X., & Xiao, Y. (2017). Three-dimensional full-loop simulation of a high-density CFB with standpipe aeration experiments. Powder Technology, 320, 574-585. http://dx.doi.org/10.1016/j.powtec.2017.07.094

Morin, M., Raynal, L., Reddy Karri, S. B., & Cocco, R. (2021). Effect of solid loading and inlet aspect ratio on cyclone efficiency and pressure drop: Experimental study and CFD simulations. Powder Technology, 377, 174–185. https://doi.org/10.1016/j.powtec.2020.08.052

Pandey, S., & Brar, L. S. (2023). Performance analysis of cyclone separators with bulged conical segment using large-eddy simulation. Powder Technology, 425, 118584. https://doi.org/10.1016/j.powtec.2023.118584

Shastri, R., Brar, L. S., & Elsayed, K. (2022). Multi-objective optimization of cyclone separators using mathematical modelling and large-eddy simulation for a fixed total height condition. Separation and Purification Technology, 291, 120968. https://doi.org/10.1016/j.seppur.2022.120968

Tan, C., Hu, H., Ye, Q., E, D., Cui, J., Zhou, Z., Kuang, S., Zou, R., & Yu, A. (2024). Multi-objective optimization of hydrocyclones using meta-heuristic algorithms and preference-informed decision-making. Powder Technology, 444, 120050. https://doi.org/10.1016/j.powtec.2024.120050

Tang, X., Yue, Y., & Shen, Y. (2023). Prediction of separation efficiency in gas cyclones based on RSM and GA-BP: Effect of geometry designs. Powder Technology, 416, 118185. https://doi.org/10.1016/j.powtec.2022.118185

Vakamalla, T. R., & Mangadoddy, N. (2017). Numerical simulation of industrial hydrocyclones performance: Role of turbulence modelling. Separation and Purification Technology, 176, 23-39. http://dx.doi.org/10.1016/j.seppur.2016.11.049

Venkatesh, S., Suresh Kumar, R., Sivapirakasam, S. P., Sakthivel, M., Venkatesh, D., & Yasar Arafath, S. (2020). Multi-objective optimization, experimental and CFD approach for performance analysis in square cyclone separator. Powder Technology, 371, 115-129. https://doi.org/10.1016/j.powtec.2020.05.080

Wang, Z., Sun, G., Song, Z., Yuan, S., & Qian, Z. (2023). Effect of inlet volute wrap angle on the flow field and performance of double inlet gas cyclones. Particuology, 77, 29-36. https://doi.org/10.1016/j.partic.2022.08.006

Wasilewski, M., & Brar, L. S. (2019). Effect of the inlet duct angle on the performance of cyclone separators. Separation and Purification Technology, 213, 19–33. https://doi.org/10.1016/j.seppur.2018.12.023

Wasilewski, M., Brar, L. S., & Ligus, G. (2021). Effect of the central rod dimensions on the performance of cyclone separators - optimization study. Separation and Purification Technology, 274, 119020. https://doi.org/10.1016/j.seppur.2021.119020

Wei, Q., Sun, G., & Gao, C. (2020). Numerical analysis of axial gas flow in cyclone separators with different vortex finder diameters and inlet dimensions. Powder Technology, 369, 321–333. https://doi.org/10.1016/j.powtec.2020.05.038

Yang, H., Wang, N., Cao, Y., Meng, X., & Yao, L. (2023). Effects of helical fins on the performance of a cyclone separator: A numerical study. Advanced Powder Technology, 34(1), 103929. https://doi.org/10.1016/j.apt.2022.103929

Yang, J., Dong, Z., Shen, C., Zhang, W., Hao, X., & Guan, G. (2019). Analysis of effect of radial confluence flow on vortex core motion. Powder Technology, 356, 871-879. https://doi.org/10.1016/j.powtec.2019.09.013

Yao, Y., Huang, W., Wu, Y., Zhang, Y., Zhang, M., Yang, H., & Lyu, J. (2021). Effects of the inlet duct length on the flow field and performance of a cyclone separator with a contracted inlet duct. Powder Technology, 393, 12–22. https://doi.org/10.1016/j.powtec.2021.07.044

Yao, Y., Shang, M., Ke, X., Huang, Z., Zhou, T., & Lyu, J. (2024). Effects of the inlet particle spatial distribution on the performance of a gas-solid cyclone separator. Particuology, 85, 133–145. https://doi.org/10.1016/j.partic.2023.03.024

Zhang, H., Li, W., Ma, Q., Zhang, Y., & Lei, F. (2020). Numerical study on influence of exit geometry in gas–solid flow hydrodynamics of HDCFB riser by CPFD. Advanced Powder Technology, 31(9), 4005-4017. https://doi.org/10.1016/j.apt.2020.08.006

Zhang, R., Yang, J., Han, S., Hao, X., & Guan, G. (2023). Improving advantages and reducing risks in increasing cyclone height via an apex cone to grasp vortex end. Chinese Journal of Chemical Engineering, 54, 136–143. https://doi.org/10.1016/j.cjche.2022.04.014

Zheng, Y., Liu, X., & Ni, L. (2022). Numerical investigation on particles separation using an enhanced cyclone with shunt device: Effect of vortex finder lengths. Chemical Engineering and Processing - Process Intensification, 181, 109125. https://doi.org/10.1016/j.cep.2022.109125