skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Upgrading petroleum and petroleum fractions

Patent ·
OSTI ID:6719694

A method is described for neutralizing the organic naphthenic acids acidity present in petroleum and petroleum fractions to produce a neutralization number less than 1.0 whereby they are rendered suitable as lube oil feed stocks which consists essentially of treating the petroleum and petroleum fractions with a neutralizing amount of monoethanolamine to form an amine salt with the organic acids and then heating the thus-neutralized petroleum and petroleum fractions at a temperature at least about 25/sup 0/F greater than the boiling point of water and for a time sufficient to convert the amine salts to amides.

Assignee:
Nalco Chemical Co., Naperville, IL
Patent Number(s):
US 4752381
OSTI ID:
6719694
Resource Relation:
Patent File Date: Filed date 18 May 1987
Country of Publication:
United States
Language:
English