Process to produce a dilute ethylene stream and a dilute propylene stream
US6790342B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Mar 8, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes are provided to produce a dilute ethylene stream and a dilute propylene stream from a cracked gas stream. One process comprises separating the cracked gas stream to produce a C3− stream and a C3+ stream; hydrogenating the C2− stream in a hydrogenation zone to remove a portion of the acetylene to produce the dilute ethylene stream and routing the C3+ stream to storage or other process unit. Another process comprises separating a cracked gas stream in a depropanizer zone to form a C3− stream and a C4+ stream; separating the C3− stream in a deethanizer zone to form a C2− and a C3 stream; hydrogenating a portion of the acetylene in the C2− stream in a hydrogenation zone to produce a dilute ethylene stream; and routing the C3 stream to storage or other process unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.