Process for inhibiting scale formation and modifying the crystal

Details Process for inhibiting scale formation and modifying the crystal Process for inhibiting scale formation and modifying the crystal

1986-11-10

1990-02-06

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

1662441, 252 8555, 252180, C02F 510

Patent

active

048986771

ABSTRACT:
The deposition of scale-imparting precipitates in aqueous media containing significant amounts of barium sulfate and other scale forming salts (e.g., calcium carbonate and calcium sulfate) is inhibited and controlled by adding a scale-inhibiting amount of a water-soluble acrylic acid copolymer with up to about 30% by weight of a vinyl sulfonate, with the copolymer having a weight average molecular weight of below about 90,000.

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Sara Sarig--"Crystal Habit Modification by Water Soluble Polymers"--Journal of Crystal Growth, 24/25, (1974), pp. 338-341.
I. Woerner & R. Holzer, "Evaluation of Sulfanated Polymers as Scale Control Additives", 42nd Annual Mtg.-Intl. Water Conf., Oct. 1981.

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