US 7,575,689 B1
	Naphthenic acid removal process
Devadas Panjala, Bartlesville, Okla. (US); Joseph B. Cross, Bartlesville, Okla. (US); Larry E. Reed, Bartlesville, Okla. (US); and Charles J. Lord, III, Bartlesville, Okla. (US)
Assigned to ConocoPhillips Company, Houston, Tex. (US)
Filed on Sep. 25, 2008, as Appl. No. 12/237,430.
Int. Cl. C02F 1/00 (2006.01)

U.S. Cl. 210—694  [210/909; 210/912]

24 Claims

1. A process comprising contacting a feed stream comprising water, high molecular weight naphthenic acids and at least one selenium compound with a composition comprising a calcium-modified, activated carbon for removal of at least a portion of said high molecular weight naphthenic acids from said feed stream thereby forming a treated stream comprising less high molecular weight naphthenic acids than said feed stream.