Composition for cleaning a gas turbine engine
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United States of America Patent
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-
May 30, 1989
Issued Date -
N/A
app pub date -
Aug 3, 1987
filing date -
Feb 13, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A composition and method for removing deposits (10) from the internal components (24) of a gas turbine engine (18) utilizing a cleaning composition (15) which comprises an aqueous solution of hydroxylamine sulfate, a chelating agent, a compound selected from the group consisting of ammonium sulfamate, ammonium sulfamide, and hydroxylamine-o-sulfonic acid, and, an alkaline pH modifying substance added in an amount sufficient to achieve a pH value of between 6.5 and 14. The method involves contacting the deposits with the cleaning composition, such as in an apply and soak type pattern, chemically dislodging the deposits from the component surfaces. The engine is rinsed to remove the dislodged deposits and residual cleaning composition.
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Cited Art Landscape
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