Scale conditioning agents and treatment method

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United States of America Patent

PATENT NO 7857911
SERIAL NO

11095671

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Abstract

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An improved scale conditioning composition and method is disclosed that results in improved dissolution and disruption of tube scale, hardened sludge and other deposits composed primarily of highly densified magnetite such as those found in heat exchange vessels, particularly steam generators. After treatment with the advanced scale conditioning composition, these magnetite rich deposits are more easily removed using known and commercially available high pressure hydro-mechanical cleaning techniques. The present invention further provides effective cleaning in a short period of time and at relatively low temperatures, while reducing the amount of waste produced and reducing the resulting corrosion of carbon and low alloy steel components within the steam generator during the cleaning process.

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Patent Owner(s)

Patent OwnerAddress
DOMINION ENGINEERING INCORPORATED11730 PLAZA AMERICA DRIVE SUITE 310 RESTON VA 20190

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kaneda, Sotaro Hokkidado, JP 5 118
Sasada, Naonobu Hokkidado, JP 3 100
Varrin, Robert D Jr Reston, US 4 22

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