Gas phase flow fields in the exit space at upper section of a f572 mm×3000 mm super vortex quick separation system (SVQS) were simulated with and without vortex-eliminating plates by using RNG k-ε turbulent model on the basis of experimental data on large scale cold equipment. The simulation results show that plates of two different structures can efficiently alleviate high speed vortexes near the wall. By comparison

it was found that wall-mounted vortex-eliminating plate could effectively reduce pressure drop and spiral degree of airflow above the plate. Straight vortex-eliminating plate had smaller pressure drop and better outcomes than bent counterpart.