SY型丝网波纹填料的流体力学及传质性能研究

研究开发了一种新型SY丝网波纹填料。常温常压下，以空气-水-氧气为介质，在塔径500mm的有机玻璃塔内，对4种不同比表面积的SY型填料进行冷模实验，研究其流体力学和传质性能，并在相同实验条件下与丝网波纹填料CY700进行对比。实验结果表明，SY型填料的塔压降低于CY型填料，液泛气速和传质效率均优于CY型填料。当L=2249m3/(m2·h)时，SY700填料的湿塔压降比CY700降低了32%；L=1687m3/(m2·h)时，等板高度平均降低了12%；实验范围内，液泛气速平均增大了22%。上述结果表明SY型填料优化的波纹几何结构，改善了气液相通道，强化了气液两相接触传质，并增大了填料通量，具有较宽的操作范围和较好的分离效率。

The hydrodynamic and mass transfer performance of SY-type wire gauze packing

SY type wire gauze packing has been developed and studied. Results are presented for a cold pilot model experiment with four different SY-type packings in a 500mm diameter column using an air-water-oxygen system at ambient pressure and temperature. The hydrodynamic and mass transfer performance of the packings was analyzed and a comparison with the conventional CY700 structured packing was made under the same conditions. As expected, the pressure drop for the SY type packing was lower than for CY type packing, while both the flooding gas velocity and mass transfer efficiency were better. When L=22.49m3/(m2·h), the wet pressure drop of SY700 decreased by 32% compared with CY700. The flooding gas velocity was 22% higher than that of the latter,and the height equivalent of the theoretical plate was reduced by 12% on average when L=16.87m3/(m2·h). As a consequence of the highly effective geometry of the modified packing, it appeared that the gas flow channels were optimized and the interfacial interaction of the two phases was intensified, which accounts for the observed higher mass transfer efficiency and capacity of the SY type packing.