Oxygen Scavenger

CHARACTERISTIC

Controls oxygen corrosion

Passivates preboiler and boiler surfaces

Improves boiler reliability

Acceptable for high-purity nuclear and oncethrough

applications

DESCRIPTION AND USE

XY56 is an oxygen scavenger designedto control corrosion caused by dissolved oxygen in preboiler and boiler systems. The scavenger in XY56 does not contribute inorganic solids to the treated water. The treated water may be used for steam attemperation and to lay up nondrainable superheaters. XY56 is formulated to meet or exceed the most demanding product purity requirements. It is the product of choice for nuclear applications and in allvolatile systems where even minor product impurities are a concern.

The scavenger in XY56 is of low toxicity. This product may not be used in drinking water systems or where steam is used for humidification.

TYPICAL APPLICATIONS

Even with good deaerating heater operation, sufficient dissolved oxygen can remain in the feedwater to damage the boiler system. Oxygen in water produces pitting, which is severe because of its localized nature. Economizers and feedwater preheaters are highly susceptible to oxygen attack. The reaction products of XY56 with oxygenare water, nitrogen and carbon dioxide. Oxygen scavenging with this product contributes no dissolved solids to the treated water.

TREATMENT AND FEEDING REQUIREMENTS

Feed Point - Feed XY56 to the condensate hot well, the deaerator storage section or the

feedwater line.

Feedrate -Feed XY56 continuously based on the feedwater dissolved oxygen concentration and the presence of a suitable residual.

Dilution – XY56 should be fed neat to a point in the system where good distribution and mixing will occur.

Equipment - Because of the low toxicity (see MSDS) of XY 56 compared to hydrazine, it does not require a system designed to minimize operator exposure.

GENERAL PROPERTIES

Physical properties of XY56 are shown on the Material Safety Data Sheet, a copy of which is available on request.

PACKAGING INFORMATION

XY56 is a liquid product available in a wide variety of customized containers and delivery methods.

SAFETY PRECAUTIONS

A Material Safety Data Sheet containing detailed information about this product is available upon request.