Drag reduction of a heat-distributing water-based liquid...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 3/00 (2006.01) B01F 17/00 (2006.01) C09K 5/10 (2006.01) C09K 5/20 (2006.01) C10M 173/02 (2006.01) F15D 1/00 (2006.01) F17D 1/17 (2006.01)

Patent

CA 2433537

The present invention relates to the use of a zwitterionic surfactant in combination with an anionic surfactant, selected from the group consisting of a sulphonate, a sulphate, an ether sulphate, an ether carboxylate, or a mixture thereof, as a drag-reducing agent in a water-based liquid suitable for heat distribution. Besides the drag-reducing agent the water-based liquid contains 5-35% by weight of the ethylene glycol compound of the formula HO(C2H4O)nH, where n is a number from 1 to 4 and 0-4% by weight of an electrolyte.

L'invention porte sur des tensio-actifs zwittérioniques combinés à des tensio-actifs anioniques sélectionnés parmi: un sulphonate, un sulfate, un éther sulfate, un éther carboxylate, ou leur mélange, et qui servent d'agent réducteur de traînée pour liquides caloporteurs aqueux. En plus de l'agent réducteur de traînée, lesdits liquides aqueux contiennent: de 5 à 35 % en poids d'un composé d'éthylène glycol de formule HO(C¿2?H¿4?O)¿n?H, dans laquelle: n est un nombre de 1 à 4; et 0 à 4 % en poids d'un électrolyte.

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