Method for controlling accretion of scale
AssigneeEarth Science Laboratories
InventorsDavid Nicholas, Reid Henry Bowman, John A. Hatten, Jr., Freddie L. Singleton, Douglas Brian McKenzie, Murray Raymond Jones
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Abstract
The present disclosure provides an improved scale inhibiting formulation that is effective, environmentally friendly, and does not add any organic compounds or traditional polymeric compounds to treated water. The scale inhibiting composition includes molecular clusters of polyammonium bisulfate (PABS), which can interact physically, chemically, or physio-chemically with one or more ions in the water or water-containing system being treated. That interaction inhibits scale accretion and/or removes previously formed scale.
Claims19
A method for inhibiting scale accretion in water-containing systems, comprising:
- adding water, sulfuric acid, and molecular clusters of polyammonium bisulfate (“PABS clusters”) to a water-based liquid in a water-containing system to form a treated water-containing system,
- wherein a concentration of the PABS clusters in the treated water-containing system is from about 0.01 ppm to about 10,000 ppm, and
- wherein the PABS clusters comprise ammonium bisulfate, sulfuric acid, and water according to Formula I
- ((RaNH4−a)2SO4)x·(H2SO4)y·(H2O)z·((RaNH4−a)HSO4)n (I)
- wherein each R independently is alkyl or aryl;
- a is 1, 2, or 3;
- x is at least 1, y is 0 to 5;
- and z is 0 to 5;
- and n is 1 to 20.
Dependencies are inferred from the claim text.