A numerical scheme for optimizing gas liquid cylindrical cyclone separator

作者：Ghasemi Amirhosein; Shams Mehrzad^*; Heyhat Mohammad Mahdi

来源：Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering , 2017, 231(4): 836-848.

DOI：10.1177/0954408916644002

• Cyclone separator
• gas liquid cylindrical cyclone
• cyclone optimization
• gas carry under
• liquid carry over

A numerical scheme for two-phase flow in gas liquid cylindrical cyclone is developed and its performance is investigated. A three-dimensional cyclone is simulated with computational fluid dynamic methods. After choosing a suitable mesh grid for the cyclone and checking grid independency, the effect of changing geometry parameters on the gas liquid cylindrical cyclone performance such as gas carry under and liquid carry over is investigated and finally the geometry is optimized to minimize both gas carry under and liquid carry over. Geometrical parameters have great effect on optimizing cyclone separators performance. Reynold's stress model is used for turbulence simulation of the flow and two-phase flow is simulated using Eulerian-Eulerian approach. Optimized parameters are inlet nozzle width, inlet angle, inlet altitude relative to the bottom of the cyclone, cyclone main diameter, and liquid outlet diameter. Results show that gas carry under decreases with decreasing liquid outlet diameter of the cyclone, increasing main diameter of the cyclone, increasing inlet nozzle's width, and decreasing nozzle's inlet angle. The optimum point for gas carry under was given with changing inlet altitude relative to the bottom of the cyclone. The optimum point for liquid carry over was obtained with changing liquid outlet diameter, main diameter of the cyclone, inlet altitude, and inlet nozzle width and increasing inlet angle causes an increase in liquid carry over.

• 出版日期2017-8