How Condensate control works?
Condensate control contains volatile amine which helps to neutralising the acidic contaminants pH of the system and keep the whole boiler and condenser system workable in good running condition for future use.
The condensate system contains high level of carbon dioxide in presence of vaporized steam the rapid formation of carbonic acid takes place which corrodes the metalic content rapidly.
Condensate control cuts down such formation and facilitates in maintaining favourable environment for metalic parts. The dosage of condensate control depends on the aggregate carbonic acid content and should be added till the point the pH range is 8.3 to 9.
Corrosion in the overhead system of the crude distillation unit is caused by hydrogen chloride produced by hydrolysis of chloride salts found in crude oil. The desalter unit in the refineriestypically removes salts and the escaped salts are hydrolyzed to produce the corrosive HCl gas. To mitigate the corrosion caused by HCl gas, neutralizing amines and film forming amines are dosed at overhead section of the crude unit. RXSOL has developed the filming amine formulations (Corrosion Inhibitor FILMMAX).
The mechanism includes formation of a film which can act as a hydrophobic barrier against corrosive species, such as, HCl. Film forming amine formulations typically contain two components, namely,
(i) neutralizing amines to control the pH and
(ii) Long chain alkyl amine to form a protective film.
The major desirable characteristics of any film forming amine formulations includes high temperature pH control, corrosion mitigation and strong fill formation. Accordingly, the in-house developed formulations were evaluated for pH neutralization, solubility, rotating cage corrosion rate and QCM film strength. The best identified formulation have been scaled up to 9 MT for field trials. During the trials, the Corrosion Inhibitor FILMMAX met the required specifications less than 0.3 ppm of iron content in the stream.
