Methods for providing refrigeration in natural gas liquids recovery plants
US11268757B2 · kind B2 · utility
1Cited by
37References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2018 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Dec 9, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2290/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and plant for natural gas liquids (NGL) recovery includes a main heat exchanger, a cold gas/liquid separator, a separation or distillation column, and an overhead gas heat exchanger. A pressurized residue gas generated from an overhead gas stream removed the top of the separation or distillation column is expanded and used as a cooling medium in the overhead gas heat exchanger and the main heat exchanger. The expanded residue gas, used as a cooling medium, is then compressed up to a pressure to be combined with the overhead stream from the separation or distillation column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.