Thank you Editor for ...

Thank you Editor for invitation,

The formation of calcium sulphate and calcium carbonate scale poses major problems in heat exchangers and water cooling systems, thereby affecting the performance of these types of equipment. In order to inhibit these scale formations, new types of biodegradable water soluble single polymer and dual poly (aspartic acid-citric acid) polymers are used.Silica Scale Removal is a powder based additive for descaling solutions for silica or silicates scales removal from heat exchangers,. The citric acid  is inhibited with corrosion inhibitors but special care must be taken towards handling and storage.

Citric acid  is an environment-friendly monomer since it derived from natural resources. Citrate has used as  scale inhibitor  for calcium carbonate (CaCO3). In order to  inhibit  these  scale  formations, new types of biodegradable water soluble single polymer and dual poly (aspartic acid- citric acid )  

Citric acid is an efficient descaling agent that helps to remove scale, rust and grime deposits from various metal parts and still is safe for humans and in food grade applications. Citric Acid is also used as a cleaning agent or as a Descalant for cleaning of Heatexcahngers etc.

In Plate type Heat exchanger the circulation of citric acid with pump collecting tank and piping system, time to time (interval) iron analysis to be done for corrosion)

Care must be taken

Citric Acid is a weak organic acid, but is still corrosive to metal parts when used for cleaning or descaling purpose. Hence it should be used along with Citric Acid Inhibitor. The inhibitor functions as a corrosion preventive agent that does not allow the acid to corrode the metallurgy while descaling of the heat exchanger or metal. 

AVOID LOW pH for corrosion control

The polymerization has confirmed to perform well and there are suspended carboxylic groups on the polymer molecules. Inhibition performance of new obtained poly (citric acid) for CaSO4 scale has evaluated by static scale inhibition method. When the dosage of polymer scale inhibitor is 2.5 mg/L in initial simulated scaling aqueous solution in which the ion concentrations of Ca2 + and SO42 − are both 2040 mg/L, the scale inhibition rate exceeds to 90%. When the dosage of polymer scale inhibitor is 25 mg/L, the scale inhibition rate is up to 98.8%.

Regards,

Prem Baboo