THE INFLUENCE OF PARTICLE SIZE ON THE FRICTIONAL PRESSURE DROP CAUSED BY THE FLOW OF A SOLID-GAS SUSPENSION IN A PIPE

The transport of granular materials in the form of a suspension in a fluid medium has been practised for many years but though extensive researches have been carried out, the equations available to designers are often applicable only to a limited range of the variables encountered in this field. Since designers cannot afford to make mistakes, they have tended to overdesign and have quite correctly relied on their own practical experience in such specialised fields as grain, flour and sugar conveying, oil refining and chemical engineering. There is clearly a need for generalised equations if designers are to be able to design plant with confidence, and it is with this in mind that the present work was undertaken. Earlier work was primarily concerned with the transport of coarse materials, whereas the work covered in this report relates to the transport of closely graded particles in the size range 40-3000 micrometers. Of particular interest is the influence of the particle size on the pressure gradient required to maintain the flow of a suspension under conditions of established flow. However, some interesting effects associated with the mass flow ratio, and with different combinations of the particle and pipe materials, are also reported.

• Supplemental Notes:
  • Paper presented at Pneumotransport 1 First International Conference on the Pneumatic Transport of Solids in Pipes, 6-8 September 1971.
• Corporate Authors:

  British Iron and Steel Research Association

  24 Buckingham Gate
  London SW1,   England 
• Authors:
  • Duckworth, R A
  • Kakka, R S
• Publication Date: 1971-11

Media Info

• Serial:
  • BISRA Open Report
  • Volume: 57
  • Publisher: British Iron and Steel Research Association

Subject/Index Terms

• TRT Terms: Bulk cargo handling; Pneumatic equipment; Two phase flow
• Old TRIS Terms: Pneumatic systems
• Subject Areas: Freight Transportation; Marine Transportation;

Filing Info

• Accession Number: 00028774
• Record Type: Publication
• Source Agency: British Iron and Steel Research Association
• Report/Paper Numbers: BISRA/PE/B/22/71
• Files: TRIS
• Created Date: Apr 10 1972 12:00AM