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Mathematical Models and Design Methods in Solid-Liquid Separation

  • A. Rushton

Part of the NATO ASI Series book series (NSSE, volume 88)

Table of contents

  1. Front Matter
    Pages I-VIII
  2. A. Rushton
    Pages 1-2
  3. Frank M. Tiller, Joseph R. Crump
    Pages 3-24
  4. K. J. Ives
    Pages 90-149
  5. A. S. Ward
    Pages 170-206
  6. Lloyd A. Spielman
    Pages 207-232
  7. Roger V. Stephenson, E. Robert Baumann
    Pages 233-256
  8. Christian Alt
    Pages 257-285
  9. Jacques Hermia
    Pages 310-332
  10. D. Leclerc, S. Rebouillat
    Pages 356-391
  11. Back Matter
    Pages 393-399

About this book

Introduction

The separation of finely-divided solids from liquids constitutes an important stage in many industrial processes. Separation of mixtures ranging from highly concentrated slurries to slightly turbid liquids must be effected in circumstances where the solids, liquid or both phases may have value. Separations may be achieved by use of a membrane or filter medium which, positioned in the path of a flowing suspension, will allow passage of the fluid whilst retaining solids on the surface or within the medium. Alternatively the two phases may be separated by sedimentation processes involving gravitational or centrifugal force. In either mode, separation difficulties are sometimes experienced with the result that solid-liquid separation is often a bottleneck in commercial plants. Operational difficulties and plant failures are associated with the random nature of the particles being separated; variations in size, shape, states of aggregation, compressibility, etc. , produce a wide range of problems. Plugging of the filter medium or the collapse of the solids under applied stress lead to slow flowrates of liquid. The colloidal nature of some precipitates makes separation by settling virtually impossible without the use of chemical agents to enhance the size of basic units and to reduce repulsive surface forces. Unit operations such as filtration, comminution, etc. , involve a seemingly bewildering array of machines which makes plant selection a difficult step and reflects the uncer­ tainties attaching to operations involving the solid )hase. Many types of pressure, vacuum and centrifugal filter are available.

Keywords

design dynamics machines pressure units

Editors and affiliations

  • A. Rushton
    • 1
  1. 1.Department of Chemical EngineeringUMISTManchesterUK

Bibliographic information

  • DOI https://doi.org/10.1007/978-94-009-5091-7
  • Copyright Information Springer Science+Business Media B.V. 1985
  • Publisher Name Springer, Dordrecht
  • eBook Packages Springer Book Archive
  • Print ISBN 978-94-010-8751-3
  • Online ISBN 978-94-009-5091-7
  • Series Print ISSN 0168-132X
  • Buy this book on publisher's site
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