Alfa-Laval has revised its recommendations for fuel-treatment installations to cope with the poorer-quality residual fuel expected to become more widespread in the near future. The newer proceses are leaving only 25% or less of the crude oil as residual fuel instead of 40 or 50%. With a greater concentration of residues these fuels have significantly different properties, including increased specific gravity, viscosity, and sludge content. All residual fuels are contaminated with salt water, sand, rust, and organic matter. If the fuel oil contains catalytic-cracked residues, catalyst fines are also to be expected. Since cleaning of modern residual fuels involves operating near the limits of separator performance, it is advised that two similar-sized self-cleaning centrifuges are operated in series, the first as purifier and the second as clarifier. To complement the centrifugal separators, particular attention should be paid to the design and operation of the settling tank to ensure satisfactory pretreatment. Alfa-Laval's latest recommendations are summarised.

  • Corporate Authors:

    Whitehall Technical Press Limited

    29 Palace Street, Westminster
    London SW1,   England 
  • Publication Date: 1980

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Filing Info

  • Accession Number: 00323286
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Mar 12 1981 12:00AM