Hydrodynamics and mass transfer in a pulsed packed column

✍ Scribed by Yu Jie; Fei Weiyang

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 666 KB
• Volume: 78
• Category: Article
• ISSN: 0008-4034
• DOI: 10.1002/cjce.5450780603

✦ Synopsis

Abstract

The hydrodynamics and mass transfer characteristics of a pulsed packed column (PPC) filled with a stainless steel super mini ring (SMR), ceramic and stainless steel Raschig rings have been studied using a 30% tributyl phosphate‐kerosene (dispersed phase)/acetic acid/water (continuous phase) system. Experiments were performed in a 100 mm internal diameter column with 1.0 m height of packing. The mass transfer and axial mixing parameters were estimated simultaneously from the measured concentration profiles of two‐phase based on the backflow model. It was found that pulsation has great influence on hydrodynamics and mass transfer characteristics of PPC with the SMR. H~oxp~ and H~ox~ decrease significantly with pulsation, whereas flooding velocity decreases only slightly. Comparison among the three types of packing showed that the SMR has superior characteristics both in terms of capacity and mass transfer efficiency. The influence of mass transfer on characteristics of PPC was also studied. New empirical equations of characteristic velocity, H~ox~and H~oxd~ were proposed and good agreement between calculated and experimental data was obtained.