Abstract
The cooling water of a large refinery chemical plant was shown to be corrosive, when measured at heat transfer surfaces, to the extent of about 40 mil per year (m.p.y.). A series of corrosion inhibitors was evaluated, again on heat transfer surfaces, using a pilot test rig operating with cooling system water containing the inhibitor.
The best results indicated that the corrosion rate could be reduced to below 3 m.p.y.
Practical experience showed that several factors in the system as a whole, prevented this figure from being achieved. Measures are being taken to eliminate or separate these factors.
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