Abstract:

A cold pilot model was constructed with four SQ type packings. The structure，hydrodynamics and mass transfer performance of the new packing were investigated. Results showed that pressure drop was reduced by a special arc-shaped corrugation of SQ type packing and improved gas and liquid distribution was afforded. The pressure drop of SQ800 was far below that of BHS800，when L=20.38 m³ /（m²·h）the pressure drop of SQ800 was 81.5% lower than that of BHS800. The highest number of theoretical stages of SQ1500 could be achieved up to 30 at atmospheric pressure. Although the efficiency of SQ1500—with a larger specific surface area than SQ800—showed a significant increase compared with SQ800，it occured with high energy consumption and narrow operational range. Sheet corrugated SQ125 has the best operation flexibility but the lowest separation efficiency，which is suitable for crude separation of raw materials. Sheet corrugated SQ250 has better separation efficiency and narrower operational range，which can be applied to old tower reform.

摘要：

用4种不同比表面积双曲（SQ）型金属波纹填料进行冷模实验。通过研究SQ型填料的流体力学和传质性能可知，双曲填料特殊的弧形波纹结构降低了塔压降，改善了气液分布。研究表明，SQ填料的塔压降要明显的低于BHS型填料，当L =20.38 m³ /（m²·h）时，SQ800压降比BHS800降低81.5%。SQ1500在常压操作下每米理论级数最高可达到30，比SQ800的传质效率高，能耗高，但是操作范围小；板波纹SQ125填料操作范围最大但是分离效率低，适合原料粗分离；板波纹SQ250填料有较好的分离效率和较宽的操作范围，适合旧塔改造等。