Coating processes – Spraying
Patent
1996-10-29
1997-12-30
Lusignan, Michael
Coating processes
Spraying
71DIG4, 106 1831, 106 1832, 106 1835, 210755, 210764, 422 7, 422 14, 422 15, 427429, B05D 102
Patent
active
057027684
ABSTRACT:
The invention encompasses methods of preventing corrosion of vessel sidewalls. In one aspect, the invention includes an anti-corrosion treatment method of reducing internal corrosion of an ammonium phosphate holding vessel comprising providing at least one quaternary-amine-comprising compound within the vessel. In another aspect, the invention includes a treatment method of reducing corrosion of a vessel sidewall surface comprising utilization of a quaternary amine to form a protective layer on the vessel sidewall surface. In another aspect, the invention includes an anti-corrosion treatment method of reducing corrosion of a vessel comprising: a) flowing a liquid into the vessel; b) adding at least one compound to the liquid, the compound being added to a concentration which exceeds the solubility of the compound in the liquid; and c) coating the compound onto an internal surface of the vessel to form a protective layer over the internal surface. In yet another aspect, the invention includes an anti-corrosion mixture, comprising: a) an ammonium polyphosphate solution; and b) a quaternary-amine-comprising compound within the ammonium polyphosphate solution.
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Pope, Daniel H., et. al., "Some Experiences with Microbiologically Influenced Corrosion of Pipelines", MP, May 1995, pp. 23-28.
Nguyen, D.T., et. al., "Corrosion of Mild Steel Exposed to Inhibited Urea-Ammonium Nitrate Solution at Ambient Temperature Under Static Conditions", Article, Aug. 25-30, 1991, Natl. Meeting of the American Chemical Society, N.Y., 7 pages.
Lonza, Inc., "Barquat MB-50" and Barquat MB-80, Material Safety Data Sheet, 6 pages.
Lonza, Inc., "Bardac 208M", Material Safety Data Sheet, 7 pages.
J. R. Simplot Co.
Lusignan Michael
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