Compressive stresses and transport forces in hydraulic packed bed wash columns

✍ Scribed by P.J. Jansens; O.S.L. Bruinsma; G.M. Van Rosmalen

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 814 KB
• Volume: 49
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(94)00174-x

✦ Synopsis

Hydraulic packed bed wash columns are continuous solid-liquid separators, which combine a virtually complete crystal-mother liquor separation with a' highly efficient washing action at high throughput. The applicability of this type of wash column, i.e. for large-scale ultrapurification of organic crystals, depends amongst others on the compressive stresses that are exerted on these crystals upon processing in a hydraulic wash column. In this paper an analytical model is presented which can be used in technical feasibility and scale-up studies to predict the compressive stress profiles that occur in a hydraulic wash column during operation. From calculations based on experimental data, rules were derived on how to minimize the compressive stresses during the operation of a hydraulic wash column.