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:
Jan. 09, 1979
Filed:
Jun. 05, 1978
Donald K Wunderlich, Richardson, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
A method for processing shale oil to remove both nitrogen and impurities such as arsenic and/or selenium while minimizing such removal costs which comprises fractionating the shale oil feet to form a first naphtha cut which essentially boils at or below 350.degree. F and a gas oil cut which essentially boils above 350.degree. F, hydrotreating the first naphtha cut, separately removing a substantial amount of said impurity from the gas oil cut and then hydrotreating the gas oil cut. Thereafter the hydrotreated gas oil cut is fractionated to form a second naphtha cut which essentially boils above 380.degree. F and at or below 450.degree. F and has a high nitrogen content, and hydrotreating the second naphtha cut to reduce the nitrogen content.