Water Technologies & Solutions fact sheet
- Controls preboiler oxygen corrosion
- Controls deposition of hardness salts and metal oxides
- Maintains clean heat transfer surfaces
- Easy to handle liquid formulation
description and use
OptiGuard MCP5070 is an alkaline blend of sulphite, phosphate and polymeric dispersant.
In some systems, a supplemental feed of neutralising amines or filming amines is recommended to provide complete condensate corrosion protection.
All the ingredients in OptiGuard MCP5070 are listed in FDA 21CFR173.310 – boiler water additives for use in the preparation of steam that will contact with food.
typical applications
Oxygen corrosion “pitting” is commonly encountered in the hot well, feedwater lines, economisers and condensate system. Oxygen pitting can lead to equipment failure and leakage in a relatively short period of time.
Deposit formation on boiler heat transfer surfaces is the principal cause of tube failure due to overheating. Hardness leakage from the external pretreatment systems and iron and copper corrosion products returning with the condensate are the major deposit causing contaminants. It is critical that their presence in feedwater be controlled to inhibit accumulation on boiler tube surfaces and thus minimise the potential for boiler tube failure. The phosphate component in OptiGuard MCP5070 reacts with the calcium hardness to form calcium phosphate, a relatively non-adherent material.
The synthetic polymer included in OptiGuard MCP5070 has proved to be highly effective in dispersing hardness precipitates as well as metallic contamination such as iron. Synthetic polymers will absorb onto the precipitates and metal ions, alter their surface charge, and inhibit their deposition on heat transfer surfaces. The solids are maintained in a fluid form and are easily removed by from the boiler water blowdown.
treatment and feeding requirements
Feed point – OptiGuard MCP5070 can be fed to the hot well, deaerator storage section or suction side of the boiler feedwater pump if there is no spray attemperation water take off point after the boiler feedwater pump.
Feed rate – The initial feed rate calculations for OptiGuard MCP5070 are based on the levels of dissolved oxygen and calcium hardness in the boiler feedwater. Feed rate control is achieved by measuring both the boiler water sulphite and ortho-phosphate reserves.
Dilution – OptiGuard MCP5070 product can be fed neat or diluted to any convenient strength with softened make-up water or condensate.
general properties
The physical properties of OptiGuard MCP5070 are shown on the Safety Data Sheet, a copy of which is available on request.
Find a contact near you by visiting www.veoliawatertechnologies.com and clicking on “Contact Us.” *Trademark of VEOLIA; may be registered in one or more countries.
©2017 VEOLIA. All rights reserved.
packaging information
OptiGuard MCP5070 is a liquid blend and is available in a wide variety of customised containers and delivery methods. For more information please contact your VEOLIA representative.
safety precautions
A Safety Data Sheet containing detailed information about this product is available on request.
