Abstract:

A new series of flow guided packing (FGP-A, FGP-B packing) was designed and developed. The hydrodynamics and mass transfer performance were analyzed in the cold model column by using an air-water-oxygen system, and compared with Mellapak125X packing under the same conditions. The results show that compared with Mellapak125X, the dry pressure drop of FGP125-A and FGP125-B reduced by 22.94% and 31.99% respectively; the wet pressure drop reduced by 41.48% and 47.32% respectively; the flooding gas velocities increased by 4.93% and 7.76% respectively; and the theoretical stages per meter of packing increased by 26.72% and 22.78% respectively. Meanwhile, considering the hydrodynamics and mass transfer performance of FGP packing, it was applied to the methanol distillation section.The results show that the heat load of the condenser is reduced by 16.01% after the application of FGP packing, which can save 461.10 kt of cooling water every year; the heat load of the reboiler is reduced by 26.30%, which is equivalent to carbon dioxide emission reduction of 6651.83 t/a.

Key words: FGP packing, fluid mechanics, mass transfer, distillation

摘要：

设计开发了新型导流型填料（FGP-A、FGP-B型填料），在冷模实验塔中以氧气-空气-水作为介质，研究分析了其流体力学与传质性能，并在相同实验条件下与Mellapak125X填料进行对比。实验结果表明，相同比表面积的FGP-A、FGP-B型填料干塔压降分别平均降低22.94%及31.99%；湿塔压降分别平均降低41.48%和47.32%；液泛气速分别平均提高4.93%及7.76%；每米填料理论级数分别平均提高26.72%和22.78%。同时结合FGP型填料流体力学与传质性能的特点，进一步将其应用到10万t/a甲醇精馏工段中。结果表明，应用FGP型填料后冷凝器热负荷降低16.01%，每年可节省冷却水461.10 kt；再沸器热负荷降低26.30%，相当于减排二氧化碳6651.83 t/a。。

关键词: FGP型填料, 流体力学, 传质, 蒸馏