Abstract: Compared with the conventional wet scrubber, dry acid gas absorber has simple operation process, low equipment cost and maintenance cost. In addition, waste liquid discharge can be avoided, which can effectively avoid secondary waste treatment problems. Through reasonable design equipment forms and structural sizes, the dry acid gas absorbers have high acid removal efficiency and absorbent utilization rate, and maintain a relative lower equipment resistance to reduce energy consumption. Therefore, the finite element analysis software workbench is used to simulate the equipment operation and analyze the influence of design parameters on the equipment performance. The results show that when the channel width increases, the utilization rate of absorbent can be effectively improved. However, the Sub-warehouse design of the absorbent silo can significantly reduce the equipment resistance while weakening the utilization rate of the absorbent. In addition, the design method of the shared runway can be further adopted, which can improve the gas distribution flow field of the equipment and ensure the effective use of the absorbent. Finally, through actual application and test, it is proved that the acid gas absorber can meet the needs of flue gas removal during continuous runtime.

Key words: dry acid gas absorber, numerical simulation, utilization rate