[en] The effects of liquid sprayed density on the pressure drop and mass transfer coefficient were discussed in a hydrogen-water liquid phase catalytic bed of φ24 mm x 1000 mm, which was filled with the mixture of hydrophobic catalyst and packing. The pressure drop (Δp) increases obviously with the liquid sprayed density (l) in higher gas velocity and slightly with l in lower gas velocity. When the gas velocity is lower, l and entrained liquid (δ) have little effect on the mass transfer coefficient (K_ya). While the gas velocity is higher, K_ya increases with l, δ has effect on K_ya. (authors)