Recovering condensables from a hydrocarbon gaseous stream
US4486209A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Jun 21, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The gaseous mixture to be split is dehydrated and condensed under a high pressure by sending the gases, separated in a first separator (4), to the first stage of an expansion turbine (16) and the condensates are sent to a fractionating column (49), the gases exiting the first stage of the turbine are mixed with the gases exiting a second separator (19), said mixture being sent to a third separator (26) the bottom liquid whereof is sent to the column (49), and the separated gas is mixed with the head gas of the column (49), whereafter it is cooled and sent to a medium-pressure fourth separator (32). The gas coming from the latter separator (32) feeds the second stage of the turbine (16) while the condensate is admixed with the gas discharged from the second stage and sent to an ultimate low-pressure separator (41) wherefrom the condensate is sent to the column (49) head and the residual gas is cooled and compressed (43, 44), the condensates being recovered from the bottom of the column (49).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.