Dangers of lab-plant scaleup for filters involving solidliquid systems
Many laboratory procedures have been used for predicting the size of clarifiers, thickeners, filters, and centrifuges or choosing the optimum quantity of filter-aid and flocculants. Scaleup predictions are frequently based on experiments involving small pressure and vacuum filters, compression-perme...
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| Published in | Chemical engineering communications Vol. 190; no. 1; pp. 128 - 150 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Taylor & Francis Group
01.01.2003
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| Online Access | Get full text |
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| Summary: | Many laboratory procedures have been used for predicting the size of clarifiers, thickeners, filters, and centrifuges or choosing the optimum quantity of filter-aid and flocculants. Scaleup predictions are frequently based on experiments involving small pressure and vacuum filters, compression-permeability cells, and sedimentation rates. Among major problems related to the accuracy of scaleup are: (1) unrepresentative sampling, (2) aging of suspensions with accompanying changes in properties of cakes and sediments, (3) effect of sedimentation not included in theoretical equations, (4) wall effects in small diameter filters and cells, and (5) misapplication of theory to experiment. |
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| ISSN: | 0098-6445 1563-5201 |
| DOI: | 10.1080/00986440302096 |