Methods and compositions for reducing the frictional resistance

Details Methods and compositions for reducing the frictional resistance Methods and compositions for reducing the frictional resistance

1973-09-10

1976-06-08

Guynn, Herbert B.

Fluid handling

Processes

Affecting flow by the addition of material or energy

252 855R, 302 66, F17D 108

Patent

active

039616398

ABSTRACT:
The frictional energy losses in the flow of an aqueous liquid along a surface such as the inside wall of a pipe are reduced by incorporating a polyethylene oxide alcohol surfactant into the liquid, moving the liquid on a flow path along the surface and maintaining the temperature of the liquid near to or greater than its cloud point. The frictional energy loss per unit length of the flow path is thereby reduced below the corresponding loss of energy which occurs when moving pure water at the same volumetric rate on the same path. Optionally, an electrolyte or salt is included in the aqueous mixture to depress the cloud point thereof. Preferably, the surfactant employed contains between about 12 and 18 carbon atoms in its lipophilic moiety and between about 3 and about 9 ethylene oxide units in its hydrophilic moiety.

REFERENCES:
patent: 2533878 (1950-12-01), Clark et al.
patent: 2913417 (1959-11-01), Weeks
patent: 3346047 (1967-10-01), Townsend et al.
patent: 3361213 (1968-01-01), Savins
patent: 3472769 (1969-10-01), Lummus et al.
patent: 3553130 (1971-01-01), Stratton
patent: 3679608 (1972-07-01), Aubert et al.
patent: 3736288 (1973-05-01), Stratta et al.
shick, Nonionic Surfactants, vol. 2, Pub. 1967, pp. 500-504.

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