To analyze the accuracy and differences of diverse turbulence models in predicting the flow around baffles of selfdesigned wet dust treatment system, several representative Reynolds Averaged NavierStokes (RANS) models of Standard κε, RNG κε, SST κω and RSM were selected to simulate the vortex flow induced by arc baffles respectively, and the simulation result was also compared with experiment data. The simulation parameters mainly include the vortex structure, pressure distribution and velocity distribution, and the results show that all the simulations based on the four turbulence models can roughly describe the main characteristics of the vortex flow around baffles, while the Standard κε and RNG κε modes are more accurate. For the pressure drop and total pressure distribution, the results of Standard κε model deviate from the other models, and the decreasing sequence of predicted values is Standard κε，RNG κε，RSM and SST κω. The predicted results of RNG κε model for longitudinal velocity are the closest to the experiment data, while the accuracy of SST κω model for predicting near wall flow and lateral velocity is relatively high.