Hydrodynamics and mass transfer characteristics of a novel vertical-sheet structured packing
A novel vertical-sheet structured packing was developed to achieve better performance as compared with conventional structured packings.In order to evaluate hydrodynamics and mass transfer performance of the packing,desorption of oxygen from water was carried out in a packed column with 190 mm internal diameter operated at liquid load of 10-38 m3 ·m-2 ·h-1 and F factor of 0.2-3.2 m-s-1 ·(kg ·m-3)0.5.The results show that compared with conventional structured packings with similar specific surface area,the pressure drop and the height of liquid transfer unit of the new packing are lower.The comparisons between the new packing and several improved structured packings with similar specific surface area demonstrate that the capacities of these packings are almost equivalent,while the mass transfer efficiency and pressure drop of the new packing are higher at high liquid load and its pressure drop is lower at low liquid load.For the influence of structure,it is shown that the high mass transfer efficiency of the new packing attributes largely to its novel geometry.
国家科技期刊平台
NSTL
万方数据
维普
