Abstract: The hydrodynamic and mass transfer performance of LPT-2 type single spray head liquid distributor in the air-O2-H2O system was studied by an organic glass tower (ID1000mm) device. Results show that its pressure drop is between 40-120Pa/m, only 15% of the dry packing pressure drop of the high efficiency packing at liquid flow volume between 1.0-5.0m3/h and gas flow volume between 2000-10000m3/h; Its entrainment percent is between 0.2-2.4%, only 24% of that of the GXD type float valve; The HETP of the LPT-2 is between 0.1-0.25.The mass transfer performance is very close to high efficiency packing at the lower liquid flow volume, but about 50% higher than that of the high efficiency packing at the higher liquid flow volume. LPT-2 type liquid distributor can take the place of the high efficiency packing to work for its better hydrodynamic and mass transfer performance.