Theory of liquid phase dispersion in packed columns

✍ Scribed by D.J. Gunn

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 777 KB
• Volume: 35
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(80)85053-6

✦ Synopsis

msperslon m the Irquld phase for tnckle or two-phase flow m packed columns has two Important conMWtons, local dispersion m the packmg, and axml dlsperslon due to the dtierences III bqmd flow con&bons between the wall and but& reggons of packmg A threedlmenslonal axlsymmetnc formulatron of dlsperslon w&n the column IS analysed and compared to a one-duuensconal formulation m the axial co-ordinate It IS shown that the onedunenslonal formulation IS correct for the limit of long drsperston tunes Por other tunes the coelbent for total dispersion wthm the column IS found to be a fun&on of local dlsperslon. dlffcrences m flow between the wall and bulk regons, and dispersion time An analytical relatmnshlp IS gven between the coefficient for total dlsperslon, and contnbutmg factors m local dlsperslon and column flows