Process for C2 recovery
US6278035A · kind A · utility
Inventors
Key dates
| Filing date | Mar 17, 2000 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Mar 17, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved process for separating a hydrocarbon bearing feed gas containing methane and lighter, C.sub.2 (ethylene and/or ethane), and heavier components into a fraction containing predominantly methane and lighter components and a fraction containing predominantly C.sub.2 and heavier hydrocarbon components including the steps of cooling and partially condensing and delivering the feed stream to a separator to provide a first residue vapor and a first liquid containing C.sub.2, directing a first part of the first liquid containing C.sub.2 into a heavy-ends fractionation column wherein the liquid is separated into a second hydrocarbon bearing vapor residue and a second liquid product containing C.sub.2 ; further cooling the second part of the first liquid containing C.sub.2 and partially condensing the second hydrocarbon bearing vapor residue; combining the cooled second part of the first liquid and partially condensed second hydrocarbon-bearing vapor residue and directing them to a second separator effecting a third residue and a third liquid; cooling and directing a first part of the third liquid into the lights-ends fractionation column, to thereby condense C.sub.2 's and heavie…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.