Nature of Corrosive Fluids

Since the discussion of refinery and petrochemical plant corrosion inhibition will be restricted to attack taking place in the presence of aqueous fluids, the composition of these fluids is of interest insofar as it affects corrosion and its inhibition. Only fluids on the process side of equipment need to be considered. 

Corrosion and Materials Selection A Guide for the Chemical and Petroleum Industries, First Editicn. Aliieza Bahadcvi. 2014 J An Wiley S mis, Ltd. Published 2014 by John Wiley Sc s, Ltd. 

As an example, a heat exchanger in which naphtha vapors in the shell are being condensed by cooling water in the tubes may experience corrosion on both shell and tube side. Corrosion by cooling water and the attendant scaling and fouling problems are of great importance. 

Restricting the discussion to process streams with an aqueous phase present, such streams may be considered as being composed of  

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