The central feature is a corrugated coalescing plate pack made of polypropylene, which is an oleofilic material (it attracts oil). The gaps between plate packs are set at approximately 0.25 inch giving a flow path similar to that of a sine wave. Then tested under IMCO conditions at the U.K.'s Warren Spring Laboratories, as part of the independent approvals procedure, the coalescing action produced an effluent reported to be well below 25 ppm. Suspended soilds were also removed with the oil. The operation of the unit is claimed to be simple. The oil and water mixture is introduced into the unit via the helical rotary pump. It then passes to the primary settling chamber where the bulk oil and high concentration of heavy oil separate. The settling chamber also enables the unit to handle 100 percent slugs of oil. From the primary settling chamber the remaining oil/water mixture passes into the corrugated separating plate pack. Here, as stated, the flow through virtually removes all of the oil which then weeps to the top surface of the plate pack where it rises to the oil recovery dome at the top of the vessel. Similar units are available for tank washing and deballasting and also for port reception facilities and land-based installations. The largest installation to date is the 3,000 gal/min unit at the U.S. Navy Fuel Depot at Craney Island.

  • Availability:
  • Corporate Authors:

    IPC Industrial Press Limited

    Dorset House, Stamford Street
    London SE1 9LU,   England 
  • Publication Date: 1979-1

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Filing Info

  • Accession Number: 00189916
  • Record Type: Publication
  • Source Agency: IPC Industrial Press Limited
  • Files: TRIS
  • Created Date: Apr 25 1979 12:00AM