There is an increasing interest in the selective removal of hydrogen sulphide (H2S) from gas streams with a high concentration of carbon dioxide (CO2). In this study, a rotating packed bed (RPB) with short gas-liquid residence time and high mass-transfer efficiency is used for the selective absorption of H2S from gas mixtures with a high CO2 concentration with dinuclear cobalt-phthalocyanine sulfonate (PDS) as the catalyst. The effects of rotation speed, gas-liquid volume ratio, temperature, Na2CO3 and PDS concentrations on the desulfurization efficiency and selectivity were investigated. The experimental results show that the removal rates of H2S and CO2 are 99.13% and < 1%, respectively, at a rotation speed of 1000 r/min, a liquid-gas ratio of 8.5 L/m(3), a temperature of 32 +/- 2 degrees C, a PDS concentration of 1.5 ppm, and a Na2CO3 concentration of 10 g/L. The high gravity technology has the advantages of high desulfurization selectivity and efficiency, and low liquid-gas ratio and Na2CO3 consumption.