MINIMIZING THE PRESSURE GRADIENTS IN CAPSULE PIPELINES

The pressure gradients due to cylindrical capsules were reduced by up to 80% by providing them with plastic instead of steel surfaces or by fitting them with collars. The power requirements of a capsule pipeline depend greatly on the capsule density, and if the capsules were constructed so that a third of the volume consisted of voids, the power needed to transport two teragrammes (2 million tons)/year of solid with a density of 1500 kg/cu.m (s.g. = 1.50) in A 254 mm (10 in.) pipeline would be reduced by over 90%. The pressure gradients and power required to transport spherical capsules were generally much smaller than those required for even the smoothest cylinders of the same specific gravity. /Author/TRRL/

• Corporate Authors:

  Canadian Society for Chemical Engineers

  151 Slater Street
  Ottawa 4, ONo,   Canada 
• Authors:
  • Ellis, H S
  • Kruyer, J
• Publication Date: 1974-8

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 457-462
• Serial:
  • Canadian Journal of Chemical Engineering
  • Volume: 52
  • Publisher: Canadian Society for Chemical Engineers

Subject/Index Terms

• TRT Terms: Atmospheric pressure; Highway grades; Minimization; Pipe; Pipelines; Plastics; Pressure; Slopes; Specific gravity
• Uncontrolled Terms: Cylinders; Minimum
• Old TRIS Terms: Pressure gradient
• ITRD Terms: 2806: Gradient; 9046: Minimum; 3361: Pipe; 5412: Pressure
• Subject Areas: Geotechnology; Highways; Pipelines; Planning and Forecasting; Terminals and Facilities; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00099715
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Nov 18 1975 12:00AM