| Title | Measurement and correlation of packed-bed axial dispersion coefficients in supercritical carbon dioxide |
| Publication Type | Journal Article |
| Year of Publication | 1996 |
| Authors | Catchpole, O.J., Bernig R., and King M.B. |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 35 |
| Issue | 3 |
| Pagination | 824 - 828 |
| Date Published | 1996 |
| ISSN | 08885885 (ISSN) |
| Keywords | Axial dispersion, Boundary conditions, Carbon dioxide, Correlation methods, Differential equations, Dispersions, Flow measurement, MATHEMATICAL MODELS, Packed beds, Peclet numbers, Pressure effects, Reynolds number, Solvents, Supercritical carbon dioxide, Thermal effects |
| Abstract | Axial dispersion coefficients of squalene, benzoic acid, and oleic acid were measured in packed beds using supercritical carbon dioxide as a solvent over the temperature range 313-333 K, pressure range 100-300 bar, and Reynolds number range 2-80. Measurements were performed under both horizontal and vertical flow conditions, using a variety of particle sizes, bed diameters, and bed lengths. The axial Peclet numbers obtained for small particles (<1 mm diameter) were an order of magnitude lower than literature data for gases and liquids at ambient pressures. The dimensionless correlation 1/Pe = 0.018/Re + 10/(1 + 0.7/Re) was found to correlate the data within experimental error. The dispersion coefficients for large particles (>1 mm) could be satisfactorially predicted by literature correlations. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-0030110143&partnerID=40&md5=a2717ccd32043173fced49cfb475d6a9 |
