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. 10, 2001
Filed:
Sep. 30, 1999
Steven A. Owen, Bartlesville, OK (US);
Marvin M. Johnson, Bartlesville, OK (US);
Tin-Tack Peter Cheung, Bartlesville, OK (US);
Mark E. Lashier, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
A hydrocarbon feedstock containing C,olefins, C,diolefins, CPD, DCPD, and aromatics is processed by the steps of heating a hydrocarbon feedstock containing CPD, DCPD, C,diolefins, benzene, toluene, and xylene in a heating zone, to dimerize CPD to DCPD, thereby forming a first effluent; separating the first effluent into a C,+ stream and a C,diolefin stream; separating the C,+ stream into a C,-C,stream and a C,+ stream; separating the C,+ stream into a fuel oil stream and a DCPD stream; and hydrotreating the C,-C,stream to thereby form a BTX stream. In an alternate embodiment, the hydrocarbon feedstock is processed by the steps of heating the hydrocarbon feedstock in a heating zone, to dimerize CPD to DCPD, thereby forming a first effluent; separating the first effluent into a C,-C,stream and a C,+ stream; separating the C,+ stream into a fuel oil stream and a DCPD stream; contacting the C,-C,stream with a selective hydrogenation catalyst, in a first reaction zone and in the presence of hydrogen, to hydrogenate at least a portion of the diolefins, alkynes, and styrene contained in the C,-C,stream, thereby forming a second effluent; separating the second effluent into a C,-C,stream and a C,olefin stream; and contacting the C,-C,stream with a hydrodesulfurization catalyst, in a second reaction zone and in the presence of hydrogen, to desulfurize at least a portion of the sulfur-containing compounds contained in the C,-C,stream thereby forming a BTX stream.