Naphthenic acid corrosion inhibitor
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United States of America Patent
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Oct 12, 1993
Grant Date -
N/A
app pub date -
Dec 30, 1992
filing date -
Dec 30, 1992
priority date (Note) -
Expired
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Abstract
Sulfonated alkylphenol is added to crude oil at 5 to 200 ppm to inhibit naphthenic acid corrosion of ferrous metal process piping and equipment in contact with the crude oil at naphthenic acid corrosion conditions. There are disclosed corrosion-inhibited hydrocarbon fluids, an improvement in hot hydrocarbon processing with sulfonated alkylphenol, a method for inhibiting naphthenic acid corrosion therewith, and a method for catalytically processing hydrocarbons with sulfonated alkylphenol to avoid catalyst poisoning by iron compounds.
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