Abstract: Based on acetone-H₂O system，with stainless steel as filling，the influence of the rotorpacking shape on the mass transfer coefficient in the rotating packed bed was investigated. Furthermore，the absorption performance was also obtained under the experimental condition of the rotational speed of 630 r/min，the gas flow rate of 2 m³/h and the liquid flow rate of 100 L/h in the rotating packed bed with different packing rotor shape. The experimental results showed that the volumetric mass transfer coefficient Kyα per unit volume packing of the thin rotor was 2. 1 times of the thick rotor. Furthermore，when the gas flow rate was 2. 5 m³/h，K_yα per unit volume packing of the thin rotor was 2. 3 times of the thick rotor. The results indicated that the rotor packing shape of the large radius and small thickness were advantageous to the mass transfer process when packing volume was similar.

Key words: rotating packed bed, mass transfer coefficient, rotor packing, gas film control