Phillips Petroleum Company

Chevron Phillips Chemical Company LP

Steven A Owen

Marvin M Johnson

Tin-Tack Peter Cheung

Mark E Lashier

A process for recovering DCPD from a hydrocarbon feedstock comprising introducing the hydrocarbon feedstock to a first column, recovering an overhead stream from the first column comprising C &minus; hydrocarbons, recovering a bottom stream from the first column comprising C &plus; hydrocarbons, feeding the bottom stream from the first column to a second column, recovering an overhead stream from the second column comprising DCPD, and recovering a bottom stream from the second column comprising fuel oil, wherein the two columns are sized and operated at defined conditions such as pressures, temperatures, reflux rates, and reboil rates.

Hydrocarbon upgrading process

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,&plus; stream and a C,diolefin stream; separating the C,&plus; stream into a C,-C,stream and a C,&plus; stream; separating the C,&plus; 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,&plus; stream; separating the C,&plus; 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.

Growing community of inventors

Bartlesville, OK, United States of America

Steven A Owen