US Patent 7399403 Decalcification of refinery hydrocarbon feedstocks

Patent 7399403 was granted and assigned to Nalco (company) on July, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Nalco (company)

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7399403

Date of Patent

July 15, 2008

Patent Application Number

10837806

Date Filed

May 3, 2004

Patent Primary Examiner

‌

Tam M Nguyen

Patent abstract

A process for removing metal contaminants, particularly calcium, from hydrocarbon feedstocks is disclosed. The process comprises mixing the feedstocks with an effective metal removing amount of an aqueous solution of one or more water-soluble poly(acrylic acid) derivatives to form an aqueous phase containing the metal ions and a hydrocarbon phase and separating the hydrocarbon phase from the aqueous phase.