Method for removing oil-based materials from water surface

Details Method for removing oil-based materials from water surface Method for removing oil-based materials from water surface

1980-03-10

1981-10-06

Therkorn, Ernest G.

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 40, 210708, 210749, 210925, B01D 1702, B08B 900

Patent

active

042933480

ABSTRACT:
A method for removing oil-based materials floating on the surface of ballast water contained in the ballast tank of a cargo carrier having vertical steel surfaces is provided comprising adding to said surface a spreading agent having a spreading force greater than said oil-based material in an amount sufficient to force substantially all of said material against said surfaces; and discharging said ballast water from said tank at a point below the surface of said water, said oil-based material being forced to deposit on said steel surfaces vacated by said discharged water.

REFERENCES:
patent: 2442100 (1948-05-01), Showalter
patent: 3436263 (1969-04-01), Strenkert
patent: 3535160 (1970-10-01), Argen
patent: 3681264 (1972-08-01), Prial
patent: 3745125 (1973-07-01), Marranci
patent: 3746023 (1973-07-01), Smith
patent: 3959134 (1976-03-01), Canevari
patent: 4197197 (1980-04-01), Abaeva
Zisman, The Spreading of Oils on Water, The Journal of Chemical Physics, vol. 9, No. 10, Oct. 1941, pp. 729-740.
Timmons, The Relation of Initial Spreading Pressure of Polar Compounds on Water to Interfacial Tension, Work of Adhesion, Journal of Colloid and Interface Science, vol. 28, No. 1, Sep. 1968, 106-117.
Surface Collecting Agents, Shell Oil Company, Mar. 1978.
Broad, "Studies in Cleaning Techniques", Symposium on Cleaning of Chemical Plant and Equipment by Liverpool Section of SCI., Jan. 21, 1971.
Watts, "How to Clean a Tank", Petroleum and Chemical Transportation, Nov. 1958, 7-11.

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