The axial velocity and streamline distribution in the cyclone reactor for ionic liquid alkylation are simulated using the Reynolds stress and Eulerian multiphase flow models. The secondary flow rates are calculated based on the formation mechanism. Moreover, the impacts of operating parameters on the secondary flow are investigated. Obvious secondary flows are observed in zero axial velocity wave zone (ZAVWZ). The best back-mixing occurs in the inlet mixing zone with a high secondary flow rate. Meanwhile, the main separation of two phases occurs in the cone zone with poor secondary flow. The secondary flow of two phases is enhanced with an increase in the total flow rate. However, the secondary flow of the light phase is inhibited with an increase in the overflow ratio. The appropriate feed ratio can promote the formation of secondary flow. The best mixing of two phases in the reactor is attained at F = 0.40, E = 1.00, and Q = 4.0 m3/h.

No abstract