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:
Jul. 19, 1983
Filed:
Apr. 26, 1982
Paul H Lewis, Groves, TX (US);
Gerald V Nelson, Nederland, TX (US);
Texaco Inc., White Plains, NY (US);
Abstract
A method for separating straight chain hydrocarbons from a hydrocarbon fraction having straight chain hydrocarbons, nonstraight chain hydrocarbons, and a sulfur compound, includes the steps of contacting the hydrocarbon fraction with a 5A zeolite having crystals of an average size larger than about 700 angstroms which selectively absorbs the straight chain hydrocarbons to the substantial exclusion of the nonstraight chain hydrocarbons and sulfur compound. Large zeolite crystals are found to have a much longer useful life in this separation method than zeolite crystals having an average size of less than about 700 angstroms as measured along one edge of the zeolite crystal. The hydrocarbon fraction has more than about 800 wppm total sulfur including more than about 15 wppm mercaptan.