Hydrocarbon upgrading process
US6258989A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Sep 30, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/68
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A hydrocarbon feedstock containing C.sub.5 olefins, C.sub.5 diolefins, CPD, DCPD, and aromatics is processed by the steps of heating a hydrocarbon feedstock containing CPD, DCPD, C.sub.5 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.sub.6 + stream and a C.sub.5 diolefin stream; separating the C.sub.6 + stream into a C.sub.6 -C.sub.9 stream and a C.sub.10 + stream; separating the C.sub.10 + stream into a fuel oil stream and a DCPD stream; and hydrotreating the C.sub.6 -C.sub.9 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.sub.5 -C.sub.9 stream and a C.sub.10 + stream; separating the C.sub.10 + stream into a fuel oil stream and a DCPD stream; contacting the C.sub.5 -C.sub.9 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 cont…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.