Recovery of light hydrocarbons from refinery gas
US4115086A · kind A · utility
35Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1975 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Dec 22, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/926
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Described herein is a process for the recovery of light hydrocarbons from refinery gas by an expansion-distillation process. The refinery gas is compressed and cooled in a series of steps to liquify and remove light hydrocarbons from the refinery gas. The vapor portion remaining, comprised of methane, is expansively cooled thereby performing useful work. The expansively cooled vapor is used as a heat exchange medium for cooling the process stream. The liquified light hydrocarbons are separated by distillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.