The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2015
Filed:
Apr. 27, 2012
Monica Michele Barney, San Francisco, CA (US);
Toni Zhang Miao, Orinda, CA (US);
Michael Tung-hai Cheng, Berkeley, CA (US);
Grzegorz Jan Kusinski, Moraga, CA (US);
Monica Michele Barney, San Francisco, CA (US);
Toni Zhang Miao, Orinda, CA (US);
Michael Tung-hai Cheng, Berkeley, CA (US);
Grzegorz Jan Kusinski, Moraga, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
A method for determining corrosiveness of naphthenic acid in a crude oil feedstock is provided. The method includes the steps of providing a crude oil feedstock containing naphthenic acid; contacting the crude oil feedstock with iron for a period of time at a sufficient temperature for the iron to react with the naphthenic acid, forming iron salts. Under sufficiently high temperatures, at least a portion of the iron salts decompose to form ketone, which can be quantified. Measurements of the ketone can be used to correlate with the amount of iron lost from corrosion given a certain level of naphthenic acid present, giving a measure of the corrosivity of crude oil feedstock.