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The foaming tendency of seawater in distillation plants is unpredictable. It is generally thought that foam is formed when organic compounds are concentrated in the brine, giving rise to surface active effects which increase the liquid film strength at phase interfaces. Antifoam Defoamer AF10 is not soluble in water. At use concentrations (0.05 - 0.1 mg/l) Antifoam Defoamer AF10 forms a micro-emulsion and during evaporation is incorporated into the surface liquid film of bubbles where it acts as a surfactant and reduces the film strength. The result is that the film readily ruptures and a stable foam does not form. In this way a uniform boiling or flashing action is achieved and carry-over is minimised.

Where to use ANTIFOAM AF10 for foam knockdown?

• Reverse Osmosis (RO) Plants
• Multi-Stage Flash (MSF) Plants
• Multi-Effect Distillation (MED) Plants
• Hybrid Desalination Facilities

• Intake Channels
• Seawater Make-up Lines
• Pumping Stations
• Equalization Basins
• Clarifiers
• Dissolved Air Flotation (DAF) Units
• Pretreatment Systems

• Power Plant Cooling Water Intakes
• Refinery Seawater Systems
• Petrochemical Facilities
• Offshore Platforms
• LNG Terminals

• Add 50% - 70% of required distillate volume into dosing tank;
• Start the dosing tank agitator/mixer;
• Add the required Antifoam Defoamer AF10 volume into the dosing tank;
• Add the remaining volume of distillate to give the required concentration of Antifoam Defoamer AF10 solution;
• Continue agitation for a further 10 - 15 minutes;
• The resulting emulsion will be stable and will not normally separate

The dose level required will depend on the quality of the seawater feed (e.g. dissolved organics, suspended solids) but is typically found to be in the range 0.05 to 0.1 mg/l and is subject to optimisation as operating experience is gained. Dose level is not dependent on operating temperature of the distillation plant. Recommended injection points are either into the seawater make-up line after any external de-aeration and decarbonation equipment, or into the recycle brine stream at a suitable point after the blowdown and typically into the discharge of the recycle brine pump.

General-purpose antifoams have a wide range of applicability, but not all of them are suitable for use in the treatment. Some foam control agents can aggravate the problem. Foam control in gas scrubbers is only one of the process parameters to be monitored. It is equally important to prevent or slow the fouling of the unit, because dismantling of the gas-scrubbing units is manually intensive. Incorrectly specified antifoams can easily lead to increased fouling and clogging, particularly in the heat exchangers. Momentive Performance Materials RXSOL antifoams are designed to provide foam control with a minimum of such problems.

Dosing for Desalination plants/aqueous systems

• Organic loading
• Algal concentration
• Turbulence level
• Intake water quality
• Seasonal variations

Key Features and Benefits

• Quick foam knockdown - particularly useful when foam suddenly builds up in the absorber and rapid control is needed.
• Excellent stability at high temperatures - because of their excellent dispersibility. Antifoam Defoamer AF10 do not show a propensity to deposit on heat exchangers as many other antifoams tend to. Instead, they remain finely dispersed in the amine or glycol solution and are eventually filtered out.
• Easy dilution and use - simple addition of water and minimum agitation is sufficient to dilute RXSOL-51-2066-220 antifoam emulsion to required concentrations. Pumping of the diluted emulsions is easy, due to their low viscosity.
• Reduced clogging or scaling in the heat exchangers - potentially resulting in less service maintenance.
• Low concentrations can provide effective foam control - RXSOL-51-2066-220 Antifoam Defoamer AF10 emulsion and often two to three times more effective than other antifoams used in treating units.

Product Safety, Handling and Storage

Customers should review the latest Material Safety Data Sheet (MSDS) and label for product safety information, safe handling instructions, personal protective equipment if necessary, and any special storage conditions required for safety. MSDS are available at www.rxmarine.com or, upon request, from any RX MARINE INTERNATIONAL representative. For product storage and handling procedures to maintain the product quality within our stated specifications, please review Certificates of Analysis, which are available in the Order Center.

Comarision to Antifoam Defoamer (RXSOL-16-2066 / Silicone based)

• Instant foam collapse through modified polyol action.
• Long-term foam suppression through polymerised poly glycol ether technology.

• Rapid distribution throughout seawater systems.
• Immediate contact with foam-generating zones.

• Reduces re-formation of foam after treatment.
• Maintains stable process conditions.

• Minimizes overflow and air entrainment.
• Reduces process interruptions.

• Effective across a wide salinity range.
• Suitable for open seawater intake systems.

• Non-silicone formulation.
• Minimal risk of membrane fouling compared with conventional silicone antifoams.

• Suitable for automated dosing systems.
• Can be continuously injected using standard metering pumps.

Antifoam Defoamer Elite M8 manufacturer, exporter and supplier in India Mumbai, Kolkata, Chennai, Vizag, Gandhidham, Surat, UAE Middle East Dubai, Sharjah, Ajman, ABudhabi, Iraq, Kuwait, Oman Muscat Barka, Canada

What causes foam in aqueous systems like desalination plants?

• Algae and plankton
• Organic decomposition products
• Hydrocarbon contamination
• Biological activity
• Turbulent mixing and aeration

Quick foam knockdown plus extended foam prevention properties in RXSOL Antifoam AF10

Company Details:

RX MARINE INTERNATIONAL
105, A wing , BSEL , TECH PARK.
VASHI ,NEW BOMBAY 400703 INDIA

STOCK Point ::: Fujairah, Mumbai, Chennai, Kandla, Kolkata, Visakhapatnam, Fujairah, Muscat, Kenya, Canada

Disposal should be in accordance with applicable regional, national and local laws and regulations.

PG* : Packing group

This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all the information required by the Controlled Products Regulations.

 The customer is responsible for determining the PPE code for this material.

Indicates information that has changed from previously issued version.

Notice to reader

While the information and recommendations in this publication are to the best of our knowledge, information and belief accurate at the date of publication, NOTHING HEREIN IS TO BE CONSTRUED AS A WARRANTY, EXPRESS OR OTHERWISE. IN ALL CASES, IT IS THE RESPONSIBILITY OF THE USER TO DETERMINE THE APPLICABILITY OF SUCH INFORMATION AND RECOMMENDATIONS AND THE SUITABILITY OF ANY PRODUCT FOR ITS OWN PARTICULAR PURPOSE. THE PRODUCT MAY PRESENT HAZARDS AND SHOULD BE USED WITH CAUTION. WHILE CERTAIN HAZARDS ARE DESCRIBED IN THIS  PUBLICATION, NO GUARANTEE IS MADE THAT THESE ARE THE ONLY HAZARDS THAT EXIST.
Hazards, toxicity and behaviour of the products may differ when used with other materials and are dependent upon the manufacturing circumstances or other processes. Such hazards, toxicity and behaviour should be determined by the user and made known to handlers, processors and end users.

DISCLAIMER OF LIABILITY :The information in this SDS was obtained from sources which we believe are reliable. However, the information is provided without any warranty, express or implied, regarding its correctness. The conditions or methods of handling, storage, use or disposal of the product are beyond our control and may be beyond our knowledge. For this and other reasons, we do not assume responsibility and expressly disclaim liability for loss, damage or expense arising out of or in any way connected with the handling, storage, use or disposal of the product. This MSDS was prepared and is to be used only for this product. If the product is used as a component in another product, this MSDS information may not be applicable.