AQUAFILM: A turn key industrial water treatment solution designed for steam boilers:
A new generation solution for steam networks.
The film-forming agents form a protective monomolecular film on the metal surfaces throughout the entire network.
The protective film acts as a continuous barrier between the water and the metal to help prevent corrosion and scaling.
The treatment gradually dislodges existing deposits to improve heat transfer.
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Military base: safety above all.
The production and distribution of steam in such a large complex, comprised of multiple buildings and more than 4 miles (6 kilometers) of piping, requires an appropriate treatment program to meet the specific conditions associated with this type of installation. Required steam flow can vary greatly depending on the season, usage, and temperature fluctuations.
The operation of a steam boiler in the wood drying industry poses several challenges. Surge demands for steam promotes water carry-over, which drastically reduces drying performance due to the loss of steam energy. In addition to this, carry-over also makes the boiler behave erratically because of water level fluctuations, iron pickup in steam and condensate lines, and difficulties controlling the treatment program.
Aquafilm's film-forming agents protect the entire steam network against corrosion by forming a protective film on the metal surfaces. This protection extends from the feedwater tank, the boilers and condensate return lines.
Neutralizing amines are not film-forming and their role is to simply neutralize carbon dioxide (CO2) to prevent acid corrosion in the condensate; this function is limited and therefore does not protect the entire network.
The protective film is of molecular size and has no negative effect on the energy transfer in a boiler. In fact, the heat transfer coefficients observed are higher for the tubes treated with film-forming agents than for those treated with conventional techniques.
If the blowdown is controlled to maintain the same level of conductivity in the boiler as with conventional treatment, the anticipated blowdown reduction typically ranges from 20% to 50% of the volume prior to the application of Aquafilm.
This is not recommended. Most scale deposits may be dislodged by treatment, but debris released may cause localized fouling that can lead to overheating and tube breakage. It is therefore recommended to clean the boiler, mainly with water tube boilers, before applying the Aquafilm treatment.
Aquafilm products must be injected with an electromagnetic diaphragm metering pump made of Teflon and EPDM with Teflon seals. This pump must be connected and controlled by a device to measure the flow of makeup water.