Filtration of highly compactible filter cake: Variable internal flow rate
✍ Scribed by D. J. Lee; S. P. Ju; J. H. Kwon; F. M. Tiller
- Publisher
- American Institute of Chemical Engineers
- Year
- 2000
- Tongue
- English
- Weight
- 129 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0001-1541
No coin nor oath required. For personal study only.
✦ Synopsis
Con®entional analyses used to interpret filtration data assume a constant internal ( ) ( ) liquid flow rate q and a negligible solid ®elocity the constant-q approximation . To L L interpret such data, the upper bounds of errors to estimate ␣ and k were analyti-a® a® cally deri®ed by the constant-q approximation. The solution of the filtration model that L incorporates a nonzero solid ®elocity was then analytically deri®ed. When filtering a highly compactible filter cake, the cake was first compacted toward the filter medium that forms a skin layer and, in doing so, rapidly reaches the steady-state distribution predicted by the constant-q approximation. Except at the first stage of the filtration, the L ( ) approach of is ®alid for interpreting filtration data of a highly compactible filter cake. Furthermore, the constant-q approximation pro®ides the upper limit L of errors in terms of estimating cake characteristics regardless of the solid ®elocity effect.