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:
Dec. 09, 2014
Filed:
Jan. 15, 2013
Saudi Arabian Oil Company, Dhahran, SA;
Boreskov Institute of Catalysis, Novosibirsk, RU;
Abdennour Bourane, Ras Tanura, SA;
Omer Refa Koseoglu, Dhahran, SA;
Zinfer Ismagilov, Novosibirsk, RU;
Svetlana Yashnik, Novosibirsk, RU;
Mikhail Kerzhentsev, Novosibirsk, RU;
Valentin Parmon, Novosibirsk, RU;
Suadi Arabian Oil Company, Dhahran, SA;
Boreskov Institute of Catalysis, Nuvosibirsk, RU;
Abstract
Desulfurization of hydrocarbon feeds is achieved by first contacting the entire feed with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone operating under mild conditions; a flashing column downstream of the hydrodesulfurization reaction zone fractionates the effluent to obtain a first fraction which contains refractory organosulfur compounds and a second fraction that is substantially free of organosulfur compounds, since the organosulfur compounds boiling in the range of this fraction were the labile organosulfur compounds which were initially removed by mild hydrodesulfurization. The first fraction is contacted with a gaseous oxidizing agent over an oxidation catalyst having a formula CuZnAlOin a gas phase catalytic oxidation reaction zone to convert the refractory organosulfur compounds to SOand low sulfur hydrocarbons. The by-product SOis subsequently removed, producing a stream containing a reduced level of organosulfur compounds.