RO Chemicals-33

Initial dosage for an untreated system is 9 litres of RXSOL CIDC / 1000 litres of untreated distilled water. This will bring the treatment up to the minimum level of 1000 ppm nitrite. For best result and prolonged engine life add RXSOL CIDC every 500 -6500 km. or 250 to 300 hours of running time or every 2 month interval.

Dirt attached on air-side fins of air coolers are a mix of carbonaceous particles such as soot and oil mist of unburned fuel components. 
Carbonaceous particles can be removed by Alkaline Cleaners Part No. RXSOL-16-1040-025 ( www.rxmarine.com/alkaline-air-cooler-cleaner ) and oil mist can be removed by oil based cleaners. However, it is very difficult to remove the mix of these substances. If you use an alkaline cleaner, oil will repel the water based alkaline cleaner; if you use oil based cleaner, carbonaceous particles will get in the way and stop oil from being removed.

This cleaners designed to remove both carbonaceous and oil simultaneously. An effective cleaning method is to immerse one side to remove the loose stains first, and then immerse the other side. This method can efficiently remove dirt and prevent swollen dirt peeled from fins from blocking the spaces between fins.

Dirt in tubes of seawater side

White scales attached on the seawater side of air coolers of many vessels. We found that in most cases, the main component of the scales is calcium carbonate and there is also a small amount of calcium sulfate. Therefore in most cases, if you dissolve the calcium carbonate the scales will be removed.

However, if the amount of scales is large enough to block the tube, the cylindrical scale will usually have calcium carbonate on the outside (the side that is in contact with tube) and calcium sulfate in the center (part that seawater passes through). Calcium sulfate is easier to be formed when the temperature goes higher.

When the amount of scales increases, the contact area of scale and cleaner is very small and a longer time of dissolution is required. Calcium sulfate cannot be dissolved by an acid cleaner.

In textile industry as a bleaching, desulfurizing and dechlorinating agent and in the leather trade for the sulfitization of tanning extracts. 

It is used in chemical manufacturing as a sulfonation and sulfomethylation agent. 

It is used in the production of sodium thiosulfate. It is used in other applications, including froth flotation of ores, oil recovery, food preservatives, and making dyes.

TYPICAL APPLICATIONS  ::: 25 to 38 Grams per Ltr of Water, Solution can be heated to increase cleaning effect.

During the operation of a membrane separation system, dissolved solids in the incoming water can concentrate up to a level where they begin to precipitate on the membrane surface. Scaling from hardness and metal salts found in most unsoftened water supplies impedes the flow of water through the membrane. This can result in unacceptably low production, high operating pressure, or an excessive pressure drop in the system, which may lead to irreversible membrane damage. Additionally, the accumulation of scale next to the membrane surface can increase the amount of dissolved material passing through the membrane, resulting in product water of unacceptable quality. Before the scale accumulates to a level where product water declines, or membrane damage can occur, it should be removed through clean-in-place (CIP), off-line cleaning. Indications of
the need for cleaning include a significant decrease in normalized permeate flow, a significant increase in pressure drop across the system (or individual stage), or an increase in the normalized salt passage, so that product quality is unacceptable. Your RX MARINE representative can assist you with monitoring your system and determining when cleaning is advised.

ORG Clean MC 103 (Membrane Cleaner)  contains a blend of solubilizing and complexing agents designed to specifically remove calcium carbonate and metal hydroxide-based scales from the surfaces of a membrane. Used in tandem with an alkaline cleaner for organics and particulate removal, regular cleanings with ORG Clean MC 103 (Membrane Cleaner) helps to preserve the life of your membranes. Depending on the nature of the fouling, a soak period may be necessary for optimum results. Consult your RX MARINE  for details.

FEED REQUIREMENTS

Feed System - This product should be used in conjunction with membrane cleaning equipment supplied by the manufacturer of the membrane system. If such a system is not present, contact your RX MARINE representative for information on fabricating or obtaining a cleaning system.

Dilution - The product must be diluted prior to introduction into the membrane system. The recommended dilution for this product is one pound (0.45 kg) of ORG Clean MC 103 (Membrane Cleaner) per 5 gallons (19 L) of water (approximately one gallon [3.8 L] of ORG Clean MC 103 (Membrane Cleaner) for each 50 gallons [189 L] of water).

Materials Compatibility - Corrosion-resistant equipment, such as PVC, should be used for the storage and preparation of this product. Pumping materials coming in contact with concentrated or diluted products should also be corrosion resistant.

PACKAGING INFORMATION
ORG Clean MC 103 (Membrane Cleaner) is a liquid material, available in a wide variety of customized containers and delivery methods.Contact your BetzDearborn representative for details.

GENERAL CLEANING INSTRUCTIONS
The following general cleaning procedure can be followed. For the optimum cleaning procedure for your system, contact your BetzDearborn representative.

1. Inspect cleaning tank, hoses, and cartridge filters.Clean tank and flush hoses if necessary. Install new cartridge filters.
2. Fill cleaning tank with RO permeate or DI water. Turn on agitator or tank recirculation pump.
3. Slowly add ORG Clean MC 103 (Membrane Cleaner)  to cleaning tank (1 gal [3.8 L] of product for every 50 gal [189 L] of water) and allow to mix thoroughly.
4. Check solution temperature. If solution temperature is lower than recommended level, adjust heating control to provide optimum temperature. If manufacturer’s recommendation is not available, contact your RX MARINE representative.
5. Check solution pH. The solution pH should be 2.5-3.5 or as recommended by the membrane manufacturer. If pH is too low, adjust pH upwards with NaOH, or other chemical as recommended by the membrane manufacturer. If pH is too high, adjust with hydrochloric acid.
6. Circulate solution through one stage at a time in the direction of feed flow for 30 minutes. Circulate at the flow rate recommended by the
   membrane or system manufacturer. If manufacturer’s recommendation is not available, contact your BetzDearborn representative. Pressure
   should be low enough so that no permeate is produced during cleaning, but always less than 60 psig (4.2 kg/cm2). In cases of heavy fouling, the first return flow (up to 15% of the cleaning tank volume) should be diverted to drain to prevent redeposition of removed solids. For optimum results, each stage must be cleaned separately in a multistage system.
7. If the first stage cleaning solution becomes turbid or discolored, dump the tank and prepare a fresh cleaning solution before proceeding. If solution pH or temperature moves out of the recommended range, a new solution should be prepared. In any event, a new cleaning solution should be prepared for each stage.
8. Rinse with RO permeate at 20°C (68°F) minimum before returning system to service.
9. When returning unit to service, divert product water to drain until any residual cleaning solution has been rinsed from system.

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